*Global CA-CoP* *CONSERVATION AGRICULTURE COMMUNITY OF* *for sustainable agriculture, land use and ecosystem management* Dear Subscribers, Please see below the September 2022 Cornell Conservation Agriculture Scoopit Research Update from Professor Peter Hobbs. Thank you Professor Hobbs for sharing. Apologies for any cross-posting. *Amir Kassam * *Moderator* *Global CA-CoP* e-mail: [log in to unmask] URL: http://www.fao.org/conservation-agriculture *Regional CA websites:* URL: http://www.act-africa.org/ URL: https://ecaf.org/ URL: http://www.caa-ap.org/ URL: http://caapas.org/ ---------- Forwarded message --------- From: Peter Hobbs <[log in to unmask]> Date: Thu, 1 Sept 2022 at 14:44 Subject: September 2022 Cornell CA Research Update To: Amir Kassam <[log in to unmask]> Dear Amir: Here is our September 2022 Cornell Conservation Agriculture Scoopit Research Update. You can also view online at https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?curate=true&null Can you send this out to people who get your listserv material? The hard copy is below. An easier link to see all the research papers on CA is as follows: https://www.zotero.org/groups/348525/cornell_conservation_agriculture/collections/KGBFX8BX Also, visit our main website at http://soilhealth.org for news and other CA information. Please use this link since we had to move our web site to a new server and this links takes you to the CA web site. Many thanks for helping to distribute this. Peter [image: Conservation Agriculture Research Updates - September 2022] <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag> Conservation Agriculture Research Updates - September 2022 <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag> by Cornell Conservation Agriculture Group (soilhealth.org) <https://www.scoop.it/u/conservation-ag> Powered by [image: Scoop.it] <https://www.scoop.it> Cover crops and no-tillage reduce crop production costs and soil loss, compensating for lack of short-term soil quality improvement in a maize and soybean production system. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135086045/2022/08/26/cover-crops-and-no-tillage-reduce-crop-production-costs-and-soil-loss-compensating-for-lack-of-short-term-soil-quality-improvement-in-a-maize-and-soybean-production-system> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0167198721003834> - Today, 11:19 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135086045/2022/08/26/cover-crops-and-no-tillage-reduce-crop-production-costs-and-soil-loss-compensating-for-lack-of-short-term-soil-quality-improvement-in-a-maize-and-soybean-production-system> Jacobs, A.A., Evans, R.S., Allison, J.K., Garner, E.R., Kingery, W.L. & McCulley, R.L. 2022. Soil and Tillage Research. 218. Article number 105310. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135086045/2022/08/26/cover-crops-and-no-tillage-reduce-crop-production-costs-and-soil-loss-compensating-for-lack-of-short-term-soil-quality-improvement-in-a-maize-and-soybean-production-system> https://doi.org/10.1016/j.still.2021.105310 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: One issue this paper raises is that benefits from cover crops and no-tillage may take years to improve soil health, but costs for cover crop establishment and no-till equipment occur before benefits accrue. This study measured soil properties, cash crop yield, and annual production costs in a three-year maize /soybean study comparing a conservation system to a conventional production system in Mississippi. The CS was compared with five different levels of conservation systems, including a conservation system with no-tillage and cover crops (no-till + cover). They found a lack of consistent improvement of soil properties in the 3 years of the experiment. Essentially more time is needed. The economic benefits of substituting no-tillage and cover crops for expensive conventional inputs were much greater than the modest soil property improvements. The greatest resource benefit from the conservation system was a reduction in estimated soil loss, as mean soil loss in no-till and cover crop decreased by 86% compared to the conventional system and makes the farming operations and agroecosystems more resilient. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135086045/2022/08/26/cover-crops-and-no-tillage-reduce-crop-production-costs-and-soil-loss-compensating-for-lack-of-short-term-soil-quality-improvement-in-a-maize-and-soybean-production-system> <https://www.scoop.it/share/post/twitter/4135086045?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135086045?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135086045?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135086045> The influence of smartphone use on conservation agricultural practice: Evidence from the extension of rice-green manure rotation system in China. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135056567/2022/08/25/the-influence-of-smartphone-use-on-conservation-agricultural-practice-evidence-from-the-extension-of-rice-green-manure-rotation-system-in-china> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0048969721076336> - August 25, 7:56 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135056567/2022/08/25/the-influence-of-smartphone-use-on-conservation-agricultural-practice-evidence-from-the-extension-of-rice-green-manure-rotation-system-in-china> Li, F., Yang, P., Zhang, K., Yin, Y., Zhang, Y. & Yin, C. 2022. Science of the Total Environment. 813. Article number 152555 <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135056567/2022/08/25/the-influence-of-smartphone-use-on-conservation-agricultural-practice-evidence-from-the-extension-of-rice-green-manure-rotation-system-in-china> https://doi.org/10.1016/j.scitotenv.2021.152555 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This is an interesting article from China on the use of smartphones to promote CA. They developed an integrated model to explain the scientific question of how smartphone use influences farmers' adoption of CA — a rice-green manure rotation system (RGRS). The sampled 934 respondents. They showed that smartphones directly contribute to farmer adoption of CA practices. They conclude that knowledge related to environmental degradation and environmental services of RGRS can be imported into smartphone Apps commonly used by farmers to increase information exposure, raise environmental awareness and regulate farmer behavior. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135056567/2022/08/25/the-influence-of-smartphone-use-on-conservation-agricultural-practice-evidence-from-the-extension-of-rice-green-manure-rotation-system-in-china> <https://www.scoop.it/share/post/twitter/4135056567?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135056567?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135056567?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135056567> Changes in soil aggregate-associated organic carbon, enzymatic activity, and biological pools under conservation agriculture based practices in rice–wheat system. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054676/2022/08/25/changes-in-soil-aggregate-associated-organic-carbon-enzymatic-activity-and-biological-pools-under-conservation-agriculture-based-practices-in-rice-wheat-system> From link.springer.com <https://link.springer.com/article/10.1007/s13399-021-02144-y> - August 25, 2:04 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054676/2022/08/25/changes-in-soil-aggregate-associated-organic-carbon-enzymatic-activity-and-biological-pools-under-conservation-agriculture-based-practices-in-rice-wheat-system> Sharma, S., Vashisht, B.B., Singh, P. & Singh, Y. 2022. Biomass Conversion and Biorefinery. On-line publication. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054676/2022/08/25/changes-in-soil-aggregate-associated-organic-carbon-enzymatic-activity-and-biological-pools-under-conservation-agriculture-based-practices-in-rice-wheat-system> https://doi.org/10.1007/s13399-021-02144-y *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This study looks at tillage intensity, crop residue management and green manure (GM Sesbania) on SOC within micro- and macro-aggregates after 6 years of growing rice-wheat in India. The plot treatments included ZT and CT with and without different % of residues and with and without GM. The ZT with 100% rice residue (ZTWR100) significantly increased soil moisture retention compared to CT w/o residue (CTWR0) and also increased the dehydrogenase (DHA), cellulase, and β-glucosidase activities and the easily extractable glomalin (EEG)- and total glomalin (TG)-related soil protein compared with the CTWR0 treatment. Crop residue retention plus GM significantly improved the proportion of total water-stable aggregates (WSA), mean weight diameter (MWD), and aggregate ratio (AR), compared with the treatments involving residue removal and no GM. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054676/2022/08/25/changes-in-soil-aggregate-associated-organic-carbon-enzymatic-activity-and-biological-pools-under-conservation-agriculture-based-practices-in-rice-wheat-system> <https://www.scoop.it/share/post/twitter/4135054676?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135054676?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135054676?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135054676> Impacts of the components of conservation agriculture on soil organic carbon and total nitrogen storage: A global meta-analysis. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054567/2022/08/25/impacts-of-the-components-of-conservation-agriculture-on-soil-organic-carbon-and-total-nitrogen-storage-a-global-meta-analysis> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0048969722039195> - August 25, 1:36 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054567/2022/08/25/impacts-of-the-components-of-conservation-agriculture-on-soil-organic-carbon-and-total-nitrogen-storage-a-global-meta-analysis> Bohoussou, Y.N., Kou, Y.H., Yu, W.B., Lin, B.J., Virk, A.L., Zhao, X., Dang, Y.P. & Zhang, H.L. 2022. Science of the Total Environment. 842. Article number 156822. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054567/2022/08/25/impacts-of-the-components-of-conservation-agriculture-on-soil-organic-carbon-and-total-nitrogen-storage-a-global-meta-analysis> https://doi.org/10.1016/j.scitotenv.2022.156822 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This meta-analysis using 757 comparisons from 97 research articles looked at the impacts on nitrogen and CA practices on SOC and N content. They found significant increases of SOC [21.39 % (CI = 15.16 to 28.64)] and TN [54.34 % (CI = 26.19 to 96.69)] stock with CA practices compared to conventional practices in the 0–15 cm soil depth. The impact of CA on SOC and TN is reduced in 0–60 cm depths compared to surface soil depths due to the limited input of crop residue deeper in the soil profile. Manure and manure mixed with mineral-N led to greater SOC sequestration than mineral-N alone. Where legume residue was used there was a decrease in C/N ratio. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054567/2022/08/25/impacts-of-the-components-of-conservation-agriculture-on-soil-organic-carbon-and-total-nitrogen-storage-a-global-meta-analysis> <https://www.scoop.it/share/post/twitter/4135054567?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135054567?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135054567?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135054567> Response of soil carbon fractions in a Haplic Cambisol to crop rotation systems and residue management practices under no tillage in the Eastern Cape, South Africa. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054045/2022/08/25/response-of-soil-carbon-fractions-in-a-haplic-cambisol-to-crop-rotation-systems-and-residue-management-practices-under-no-tillage-in-the-eastern-cape-south-africa> From www.tandfonline.com <https://www.tandfonline.com/doi/abs/10.1080/02571862.2021.1938261> - August 25, 11:20 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054045/2022/08/25/response-of-soil-carbon-fractions-in-a-haplic-cambisol-to-crop-rotation-systems-and-residue-management-practices-under-no-tillage-in-the-eastern-cape-south-africa> Gura, I., Mnkeni, P.N.S., du Preez, C.C. & Barnard, J.H. 2021. South African Journal of Plant and Soil. 38 (5) 372-380. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054045/2022/08/25/response-of-soil-carbon-fractions-in-a-haplic-cambisol-to-crop-rotation-systems-and-residue-management-practices-under-no-tillage-in-the-eastern-cape-south-africa> https://doi.org/10.1080/02571862.2021.1938261 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: SOC is a major indicator of soil health but has a slow short-term response to management, so this study investigated the short-term effects of crop rotation and residue management under NT. There were 4 rotations involving maize, soybean, wheat, and fallow. There was residue retention and removal with crops sown using NT. Measures were SOC, microbial biomass carbon (MBC), mineralisable carbon (Cmin) and particulate organic matter carbon fractions (POM-C). Crop rotation systems significantly influenced Cmin and POM-C fractions whereas residue management practices significantly affected all the carbon fractions. Crop residue retention as opposed to its removal enhanced all the carbon pools. The POM-C and Cmin fractions were more sensitive to short-term CA management interventions than SOC and MBC, and can be used for monitoring SOM changes and microbial activities. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054045/2022/08/25/response-of-soil-carbon-fractions-in-a-haplic-cambisol-to-crop-rotation-systems-and-residue-management-practices-under-no-tillage-in-the-eastern-cape-south-africa> <https://www.scoop.it/share/post/twitter/4135054045?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135054045?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135054045?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135054045> Conservation Tillage, Residue Management, and Crop Rotation Effects on Soil Major and Micro-nutrients in Semi-arid Vertisols of India <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134987329/2022/08/23/conservation-tillage-residue-management-and-crop-rotation-effects-on-soil-major-and-micro-nutrients-in-semi-arid-vertisols-of-india> From link.springer.com <https://link.springer.com/article/10.1007/s42729-020-00380-1> - August 23, 11:59 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134987329/2022/08/23/conservation-tillage-residue-management-and-crop-rotation-effects-on-soil-major-and-micro-nutrients-in-semi-arid-vertisols-of-india> Jayaraman, S., Sinha, N.K., Mohanty, M., Hati, K.M., Chaudhary, R.S., Shukla, A.K., Shirale, A.O., Neenu, S., Naorem, A.K., Rashmi, I., Biswas, A.K., Patra, A.K., Srinivasa, R,C. & Dalal, R.C. 2021. Journal of Soil Science and Plant Nutrition. 21 (1). 523-535. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134987329/2022/08/23/conservation-tillage-residue-management-and-crop-rotation-effects-on-soil-major-and-micro-nutrients-in-semi-arid-vertisols-of-india> https://doi.org/10.1007/s42729-020-00380-1 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This paper provides information on the combined impact of tillage, residue, and cropping system on the major and micro-nutrient availability in the rainfed farming systems in a vertisol in central India. There were two tillage treatments, reduced tillage (RT) and CT; and 6 cropping systems as sub-plots. After 4 cropping cycles soil samples were taken for macro- and micro-nutrient status. The major and micro-nutrient concentrations were higher in the surface layer (0-5cm) than subsurface layers, regardless of tillage and cropping systems. Tillage and cropping systems had a significant effect on major available nutrients (N, P, and K) at 0–5-cm depth. The DTPA extractable Fe, Mn, Cu, and Zn concentrations exhibited decreasing trends with increasing depth. The paper concludes that RT practices, coupled with crop residue retention, positively affected major and micro-nutrient distribution and availability in this soil. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134987329/2022/08/23/conservation-tillage-residue-management-and-crop-rotation-effects-on-soil-major-and-micro-nutrients-in-semi-arid-vertisols-of-india> <https://www.scoop.it/share/post/twitter/4134987329?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4134987329?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4134987329?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4134987329> Soil Organic Carbon and Labile Carbon Pools Attributed by Tillage, Crop Residue and Crop Rotation Management in Sweet Sorghum Cropping System <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134986185/2022/08/23/soil-organic-carbon-and-labile-carbon-pools-attributed-by-tillage-crop-residue-and-crop-rotation-management-in-sweet-sorghum-cropping-system> From www.mdpi.com <https://www.mdpi.com/2071-1050/12/22/9782> - August 23, 11:26 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134986185/2022/08/23/soil-organic-carbon-and-labile-carbon-pools-attributed-by-tillage-crop-residue-and-crop-rotation-management-in-sweet-sorghum-cropping-system> Malobane, M.E., Nciizah, A.D., Mudau, F.N. & Wakindiki, I.I.C. 2020. Sustainability (Switzerland). 12 (22). 1-10. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134986185/2022/08/23/soil-organic-carbon-and-labile-carbon-pools-attributed-by-tillage-crop-residue-and-crop-rotation-management-in-sweet-sorghum-cropping-system> https://doi.org/10.3390/su12229782 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This study looks at the impact of CA on SOC dynamics in sweet sorghum systems in South Africa. They compared NT vs CT; two rotations, sweet-sorghum/winter grazing vetch/sweet sorghum and sweet-sorghum/winter fallow/sweet sorghum; three crop residue retention levels: 30%, 15% and 0%. Tillage was the main factor that influenced SOC with NT increasing SOC more than CT. Increased residue retention resulted in higher microbial biomass. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134986185/2022/08/23/soil-organic-carbon-and-labile-carbon-pools-attributed-by-tillage-crop-residue-and-crop-rotation-management-in-sweet-sorghum-cropping-system> <https://www.scoop.it/share/post/twitter/4134986185?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4134986185?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4134986185?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4134986185> Evaluation of two-wheel tractor attached seeders used in conservation agriculture systems of Ethiopia <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134985135/2022/08/23/evaluation-of-two-wheel-tractor-attached-seeders-used-in-conservation-agriculture-systems-of-ethiopia> From doi.org <https://doi.org/10.13031/aim.202000334> - August 23, 11:03 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134985135/2022/08/23/evaluation-of-two-wheel-tractor-attached-seeders-used-in-conservation-agriculture-systems-of-ethiopia> Awoke, B.G., Baudron, F., Antille, D.L., Kebede, L., Anawte, D.A., Tikuneh, D.B. & Aikins, K.A. 2020. ASABE 2020 Annual International Meeting. Omaha, Nebraska. Paper number 2000334. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134985135/2022/08/23/evaluation-of-two-wheel-tractor-attached-seeders-used-in-conservation-agriculture-systems-of-ethiopia> https://doi.org/10.13031/aim.202000334 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This is an interesting study on the utility of various two-wheel tractor seeders for wheat and maize in Ethiopia. Seeders tested came from Brazil, Bangladesh, China, India, and USA. Field operating capacity, fuel consumption, and crop yield were evaluated over two years in two locations. Fuel consumption was between 9.4 L ha-1 and 12.6 L ha-1 depending on seeding depth. A ten-fold reduction in operating time was possible relative to the non-mechanized conventional practice. Improved uniformity and timing of planting resulted in yield increments of 29% and 22% for wheat and maize, respectively. The Bangladeshi and Chinese equipment was best for wheat. For maize, the John Morrison and VMP seeders outperformed all other units. The paper recommends the possibility of manufacture of this equipment locally to reduce costs and increase adoption. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134985135/2022/08/23/evaluation-of-two-wheel-tractor-attached-seeders-used-in-conservation-agriculture-systems-of-ethiopia> <https://www.scoop.it/share/post/twitter/4134985135?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4134985135?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4134985135?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4134985135> The impact of reduced tillage and distance to field margin on predator functional diversity <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135081975/2022/08/26/the-impact-of-reduced-tillage-and-distance-to-field-margin-on-predator-functional-diversity> From link.springer.com <https://link.springer.com/article/10.1007/s10841-022-00370-x> - Today, 10:58 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135081975/2022/08/26/the-impact-of-reduced-tillage-and-distance-to-field-margin-on-predator-functional-diversity> Jacobsen, S.K., Sigsgaard, L., Johansen, A.B., Thorup-Kristensen, K. & Jensen, Per M. 2022. Journal of Insect Conservation. 26 (3) 491-501. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135081975/2022/08/26/the-impact-of-reduced-tillage-and-distance-to-field-margin-on-predator-functional-diversity> https://doi.org/10.1007/s10841-022-00370-x *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This paper looks at the impact of agricultural intensification on arthropods, especially ground-dwelling predators that are negatively affected by tillage. They hypothesize that reducing soil disturbances conserves arthropod populations in the field and reduces the for chemical pest controls. They used pitfall traps in cereal fields with CT, Reduced tillage (RT) and NT under CA management. Overall, the activity-density of ground-dwelling predators was higher in fields with minimum soil disturbance and generally declined with increased distance to semi-natural habitats. Body size of beetles was also larger with less disturbance. The results obtained in the present study show that soil disturbances significantly influence arthropod abundance and diversity. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135081975/2022/08/26/the-impact-of-reduced-tillage-and-distance-to-field-margin-on-predator-functional-diversity> <https://www.scoop.it/share/post/twitter/4135081975?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135081975?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135081975?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135081975> Zero Tillage, Residue Retention and System-Intensification with Legumes for Enhanced Pearl Millet Productivity and Mineral Biofortification. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135051838/2022/08/25/zero-tillage-residue-retention-and-system-intensification-with-legumes-for-enhanced-pearl-millet-productivity-and-mineral-biofortification> From www.mdpi.com <https://www.mdpi.com/2071-1050/14/1/543> - August 25, 2:20 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135051838/2022/08/25/zero-tillage-residue-retention-and-system-intensification-with-legumes-for-enhanced-pearl-millet-productivity-and-mineral-biofortification> Faiz, M.A., Bana, R.S., Choudhary, A.K. Laing, A.M., Bansal, R., Bhatia, A., Singh, Y.V., Kumar, V., Bamboriya, S.D., Padaria, R.N., Khaswan, S.L. & Dabas, J.P.K. 2022. Sustainability (Switzerland) 14 (1). Article number 543. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135051838/2022/08/25/zero-tillage-residue-retention-and-system-intensification-with-legumes-for-enhanced-pearl-millet-productivity-and-mineral-biofortification> https://doi.org/10.3390/su14010543 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This is a Pearl Millet (PM) based paper for low-irrigation, semi-arid areas of North Indian Plains. The study looked at ZT with and without residue, ZT and ZTR compared with CT using 3 PM cropping patterns that included, chickpea, mungbean and PM fodder over 2 years. Comparisons were made for yield, mineral biofortification and GHG emissions. Results showed a significant increase in pearl millet yield attributes, grain and stover productivity, nutrient uptake, and micronutrient biofortification in the PM–CP–MB cropping system under ZTR relative to other treatment combinations. On-farm trials confirmed the same result. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135051838/2022/08/25/zero-tillage-residue-retention-and-system-intensification-with-legumes-for-enhanced-pearl-millet-productivity-and-mineral-biofortification> <https://www.scoop.it/share/post/twitter/4135051838?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135051838?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135051838?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135051838> Impact of levels of residue retention on soil properties under conservation agriculture in Vertisols of central India. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135051702/2022/08/25/impact-of-levels-of-residue-retention-on-soil-properties-under-conservation-agriculture-in-vertisols-of-central-india> From www.tandfonline.com <https://www.tandfonline.com/doi/full/10.1080/03650340.2020.1836345> - August 25, 1:47 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135051702/2022/08/25/impact-of-levels-of-residue-retention-on-soil-properties-under-conservation-agriculture-in-vertisols-of-central-india> Kumawat, A., Vishwakarma, A.K., Wanjari, R.H., Sharma, N.K., Yadav, D., Kumar, D. & Biswas, A.K. 2022. Archives of Agronomy and Soil Science. 68 (3) 368-382. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135051702/2022/08/25/impact-of-levels-of-residue-retention-on-soil-properties-under-conservation-agriculture-in-vertisols-of-central-india> https://doi.org/10.1080/03650340.2020.1836345 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This paper looks at residue management that is difficult to manage in modern agriculture without burning and can lead to late planting. This paper looks at zero-till residue management on soil health parameters in a maize-chickpea pattern in the black vertisols of India. After 4 years the soil bulk density was reduced by 3.0–10.2% and volumetric moisture content was improved by 10.2–19.3% at 0–10 cm soil depth in ZT with residue over conventional tillage (CT). Organic carbon and labile carbon, P and K, total fungal and actinomycetes were also increased compared to CT at 0-10 cm soil depths. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135051702/2022/08/25/impact-of-levels-of-residue-retention-on-soil-properties-under-conservation-agriculture-in-vertisols-of-central-india> <https://www.scoop.it/share/post/twitter/4135051702?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135051702?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135051702?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135051702> Tillage, crop rotation, residue management and biochar influence on soil chemical and biological properties. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054099/2022/08/25/tillage-crop-rotation-residue-management-and-biochar-influence-on-soil-chemical-and-biological-properties> From www.tandfonline.com <https://www.tandfonline.com/doi/abs/10.1080/02571862.2021.1962421> - August 25, 11:31 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054099/2022/08/25/tillage-crop-rotation-residue-management-and-biochar-influence-on-soil-chemical-and-biological-properties> Nyambo, P., Thengeni, B., Chiduza, C. & Araya, T. 2021. South African Journal of Plant and Soil. 38 (5) 390-397. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054099/2022/08/25/tillage-crop-rotation-residue-management-and-biochar-influence-on-soil-chemical-and-biological-properties> https://doi.org/10.1080/02571862.2021.1962421 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This study looked at ways to replenish declining soil fertility. It evaluated pH, EC, Exchangeable cations, microbial biomass carbon, total N and C in a CA system. This study had three crop rotations, and 3 residue treatments; residue retention, removal, and biochar amendment. Soil pH and EC were not affected by these practices after 3 years. Magnesium and potassium were significantly affected by tillage at 0–5 cm depth. At the end of three years, CA resulted in net increases of total N, and C, and MBC compared to conventional practices. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4135054099/2022/08/25/tillage-crop-rotation-residue-management-and-biochar-influence-on-soil-chemical-and-biological-properties> <https://www.scoop.it/share/post/twitter/4135054099?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4135054099?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4135054099?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4135054099> Soil organic carbon and labile and recalcitrant carbon fractions attributed by contrasting tillage and cropping systems in old and recent alluvial soils of subtropical eastern India <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134986454/2022/08/23/soil-organic-carbon-and-labile-and-recalcitrant-carbon-fractions-attributed-by-contrasting-tillage-and-cropping-systems-in-old-and-recent-alluvial-soils-of-subtropical-eastern-india> From journals.plos.org <https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0259645> - August 23, 12:24 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134986454/2022/08/23/soil-organic-carbon-and-labile-and-recalcitrant-carbon-fractions-attributed-by-contrasting-tillage-and-cropping-systems-in-old-and-recent-alluvial-soils-of-subtropical-eastern-india> Rakesh, S., Sarkar, D., Sinha, A.K., Danish, S., Bhattacharya, P.M., Mukhopadhyay, P., Salmen, S.H., Ansari, M.J. & Data, R. 2021. Plos One. 16 (12). Article number e0259645 <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134986454/2022/08/23/soil-organic-carbon-and-labile-and-recalcitrant-carbon-fractions-attributed-by-contrasting-tillage-and-cropping-systems-in-old-and-recent-alluvial-soils-of-subtropical-eastern-india> https://doi.org/10.1371/journal.pone.0259645 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This farmer field trial in West Bengal, India looked at short-term impact of contrasting tillage (ZT and CT) and cropping systems (rice–wheat and rice–maize) on total organic carbon (TOC) and its fractions, after 4-years of conservation agriculture (CA) in old and recent alluvial soils. Soils samples were taken from 3 soil depths. Results showed that TOC and fractions under rice–maize (RM) cropping system were significantly greater (15–35%) than for rice–wheat (RW) as a result of higher residue biomass addition. Zero-tillage (ZT) improved the C fractions by 10–20% over conventional tillage (CT) in all aspects. TOC and its fractions were observed to be greater under the ZT system in the topmost soil depths (0–5 and 5–10 cm), but the same system failed to improve these at 10–20 cm. They conclude that ZT under the RM system increases the turnover rates of C in both soil types but the amount of clay influences the stabilization/storage of C. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134986454/2022/08/23/soil-organic-carbon-and-labile-and-recalcitrant-carbon-fractions-attributed-by-contrasting-tillage-and-cropping-systems-in-old-and-recent-alluvial-soils-of-subtropical-eastern-india> <https://www.scoop.it/share/post/twitter/4134986454?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4134986454?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4134986454?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4134986454> Management of Crop Residues for Improving Input Use Efficiency and Agricultural Sustainability <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134987209/2022/08/23/management-of-crop-residues-for-improving-input-use-efficiency-and-agricultural-sustainability> From www.mdpi.com <https://www.mdpi.com/2071-1050/12/23/9808> - August 23, 11:37 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134987209/2022/08/23/management-of-crop-residues-for-improving-input-use-efficiency-and-agricultural-sustainability> Sarkar, S., Skalicky, M., Hossain, A., Brestic, M., Saha, S., Garai, S., Ray, K. & Brahmachari, K. 2020. Sustainability (Switzerland). 12 (23) 1-24. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134987209/2022/08/23/management-of-crop-residues-for-improving-input-use-efficiency-and-agricultural-sustainability> https://doi.org/10.3390/su12239808 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This paper reviews recent findings to understand and summarize the different aspects of crop residue management, including the impact of the residues on crop and soil health, natural resource recycling, and strategies related to residue retention in farming systems. This is important since modern agriculture results in higher yields of biomass that then need to be managed for beneficial effects rather than improper systems like burning. The authors suggest that suitable residue management techniques will fit well under existing farming system practices without compromising the systems’ productivity and environmental sustainability. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134987209/2022/08/23/management-of-crop-residues-for-improving-input-use-efficiency-and-agricultural-sustainability> <https://www.scoop.it/share/post/twitter/4134987209?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4134987209?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4134987209?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4134987209> Effects of Different Management Methods for Sunn-Hemp Cover Crop on Corn Production in A No-Till System in Cambodia <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134985213/2022/08/23/effects-of-different-management-methods-for-sunn-hemp-cover-crop-on-corn-production-in-a-no-till-system-in-cambodia> From doi.org <https://doi.org/10.13031/aim.202000579> - August 23, 11:16 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134985213/2022/08/23/effects-of-different-management-methods-for-sunn-hemp-cover-crop-on-corn-production-in-a-no-till-system-in-cambodia> Hin, L., Buntong, B., Reyes, M.R., Hok, L., Lor, L., Tivet, F., Leng, V., Suos, V., Clemmons, H. & Kornecki, T.S. 2020. ASABE 2020 Annual International Meeting. Omaha, Nebraska. Paper number 2000579. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134985213/2022/08/23/effects-of-different-management-methods-for-sunn-hemp-cover-crop-on-corn-production-in-a-no-till-system-in-cambodia> https://doi.org/10.13031/aim.202000579 *Cornell Conservation Agriculture Group (soilhealth.org)*'s insight: This is a second paper from the ASABE conference in Nebraska. It reports progress with CA in Cambodia. Adoption is slow at the moment because of low engagement of local services for machinery. This also compared different no-till seeders for maize. Sunn hemp was grown as a cover crop before planting maize. Three main treatments were implemented with (i) sunn hemp used as green manure crop and buried through tillage, (ii) sunn hemp crimped by Cambodia made crimper, and (iii) sunn hemp crimped by USDA crimper. Two different no-till seeders, the one-row Morrison seeder mounted on a 19-hp Oggun tractor and a four-row Brazilian seeder mounted on 75-hp John Deere tractor. The Brazilian seeder saved 50% seed and 80% of the time. Corn yield was also higher. Crimped plots had higher yields than disked plots. The conclude no-till seeders lead to higher corn yields. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4134985213/2022/08/23/effects-of-different-management-methods-for-sunn-hemp-cover-crop-on-corn-production-in-a-no-till-system-in-cambodia> <https://www.scoop.it/share/post/twitter/4134985213?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4134985213?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4134985213?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4134985213> <https://drive.google.com/u/0/settings/storage?hl=en&utm_medium=web&utm_source=gmail&utm_campaign=storage_meter&utm_content=storage_normal> <https://www.google.com/intl/en/policies/terms/> <https://www.google.com/intl/en/policies/privacy/> <https://www.google.com/gmail/about/policy/> ######################################################################## To unsubscribe from the CA-Cop-L list, click the following link: &*TICKET_URL(CA-Cop-L,SIGNOFF);