*Global CA-CoP* *CONSERVATION AGRICULTURE COMMUNITY OF* *for sustainable agriculture, land use and ecosystem management* Dear Subscribers, Please see below the December 2022 Conservation Agriculture Scoopit Research Newsletter from Cornell University. Thank you Professor Hobbs for sharing. *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 Dec 2022 at 20:14 Subject: December 2022 CA Scoopit Research newsletter To: Amir Kassam <[log in to unmask]> Dear Amir: Here is our December 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 link takes you to the CA web site. Many thanks for helping to distribute this. Peter [image: Conservation Agriculture Research Updates - December 2022] <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag> Conservation Agriculture Research Updates - December 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> Impact of Long-Term Conservation Agriculture Practices on Phosphorus Dynamics under Maize-Based Cropping Systems in a Sub-Tropical Soil. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320920/2022/11/26/impact-of-long-term-conservation-agriculture-practices-on-phosphorus-dynamics-under-maize-based-cropping-systems-in-a-sub-tropical-soil> From www.mdpi.com <https://www.mdpi.com/2073-445X/11/9/1488> - Today, 5:02 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320920/2022/11/26/impact-of-long-term-conservation-agriculture-practices-on-phosphorus-dynamics-under-maize-based-cropping-systems-in-a-sub-tropical-soil> Anil, A.S., Sharma, V.K., Jimenez-Ballesta, R., Parihar, C.M., Datta, S.P., Barman, M., Chobhe, K.A., Kumawat, C., Patra, A. & Jatav, S.S. 2022. Land. 11 (9). Article number 1488 <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320920/2022/11/26/impact-of-long-term-conservation-agriculture-practices-on-phosphorus-dynamics-under-maize-based-cropping-systems-in-a-sub-tropical-soil> https://doi.org/10.3390/land11091488 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This study was designed to look at the impact of long-term CA on soil organic and inorganic P fractions under maize-based cropping systems with different tillage and cropping systems. The 3 tillage systems were NT, Permanent beds and CT. There were 4 cropping systems with maize, wheat and various legumes. P was fractionated from 2 soil depths, 0-5cm and 5-15 cm. Results showed that a higher amount of soluble and loosely bound P (SL-P) was detected in ZT among the inorganic P fractions, whereas iron-bound P (Fe-P), aluminum-bound P (Al-P), reductant soluble P (RES-P) and calcium-bound P (Ca-P) were found higher in CT in both soil depths. Significant synergistic effects of winter legume (chickpea) with summer legumes (sesbania and mungbean) in crop rotation were observed on SL-P, Labile Po, Humic acid-Po, Alkaline phosphatase and MBP at 0-5 and 5-15 cm soil depths. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320920/2022/11/26/impact-of-long-term-conservation-agriculture-practices-on-phosphorus-dynamics-under-maize-based-cropping-systems-in-a-sub-tropical-soil> <https://www.scoop.it/share/post/twitter/4138320920?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138320920?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138320920?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138320920> Do fallow in the off-season and crop succession promote differences in soil aggregation in no-tillage systems? <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320599/2022/11/26/do-fallow-in-the-off-season-and-crop-succession-promote-differences-in-soil-aggregation-in-no-tillage-systems> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0016706122000325> - Today, 3:26 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320599/2022/11/26/do-fallow-in-the-off-season-and-crop-succession-promote-differences-in-soil-aggregation-in-no-tillage-systems> Fernandes, M.M.H., Coelho, A.P., Silva, M.F. & Fernandes, C. 2022. Geoderma. 412. Article number 115725. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320599/2022/11/26/do-fallow-in-the-off-season-and-crop-succession-promote-differences-in-soil-aggregation-in-no-tillage-systems> https://doi.org/10.1016/j.geoderma.2022.115725 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: The aim of this paper is to look at the effects of fallow in the off season and grass/grass and grass/legume crop successions on soil aggregation in NT systems. The study was done on fields with different land uses for more than10 years in SE Brazil. Three NT maize land uses yielded 3 groups: NT- with fallow in the off season; NT with legumes in off season; and NT with maize in the off season. Forest land (F) was used as a check for soil aggregation and CT a a low conservation system. They found that the absence of soil surface cover throughout the year in an NT system was as harmful to soil aggregation as a CT system. The NT-grass system resulted in higher organic C and aggregate stability than the NT-legume system. They also found that that fallow in the off-season promotes a NT system with low soil conservation. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320599/2022/11/26/do-fallow-in-the-off-season-and-crop-succession-promote-differences-in-soil-aggregation-in-no-tillage-systems> <https://www.scoop.it/share/post/twitter/4138320599?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138320599?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138320599?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138320599> Conservation Agriculture: Analysis and prioritization of socio-ecological factors operating at farm levels in Ohio, USA <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319838/2022/11/26/conservation-agriculture-analysis-and-prioritization-of-socio-ecological-factors-operating-at-farm-levels-in-ohio-usa> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S1462901122002933> - Today, 3:01 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319838/2022/11/26/conservation-agriculture-analysis-and-prioritization-of-socio-ecological-factors-operating-at-farm-levels-in-ohio-usa> Chatterjee, R., Islam, R., Acharya, S.K. & Biswas, A. 2022. Environmental Science & Policy. 138. 1-10. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319838/2022/11/26/conservation-agriculture-analysis-and-prioritization-of-socio-ecological-factors-operating-at-farm-levels-in-ohio-usa> https://doi.org/10.1016/j.envsci.2022.09.015 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This study was done in 40 counties in Ohio, USA to assess socio-ecological factors operating on CA farms. Results show that owner farmers of the 230 selected farms had no hesitation in adopting CA as the future of farming and to address food security and mitigate climate change. 60% of the respondents do not till their field, 80% leave crop residues on the soil surface, and 97% follow crop rotations. Finally, the CA farmers have achieved 10 to > 40% fuel savings. Grazing animals were also integrated into CA systems, adding animal manure to their farms. They conclude that more farmers should be encouraged to to adopt CA practices in the future. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319838/2022/11/26/conservation-agriculture-analysis-and-prioritization-of-socio-ecological-factors-operating-at-farm-levels-in-ohio-usa> <https://www.scoop.it/share/post/twitter/4138319838?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138319838?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138319838?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138319838> Novel resource conservation technologies for increasing the production and productivity of rice-wheat cropping system in Indo-Gangetic plains of India <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320396/2022/11/26/novel-resource-conservation-technologies-for-increasing-the-production-and-productivity-of-rice-wheat-cropping-system-in-indo-gangetic-plains-of-india> From www.indianjournals.com <https://www.indianjournals.com/ijor.aspx?target=ijor:jefa&volume=17&issue=2&article=007> - Today, 2:18 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320396/2022/11/26/novel-resource-conservation-technologies-for-increasing-the-production-and-productivity-of-rice-wheat-cropping-system-in-indo-gangetic-plains-of-india> Sharma, J., Sharma, B.C., Bharti, V., Sharma, A. & Shubham, J. 2022. Journal of Eco-friendly Agriculture. 17 (2) 235-242. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320396/2022/11/26/novel-resource-conservation-technologies-for-increasing-the-production-and-productivity-of-rice-wheat-cropping-system-in-indo-gangetic-plains-of-india> https://doi.org/10.5958/2582-2683.2022.00047.8 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper looks at the rice-wheat system of South Asia (13.5 mha) but within the IGP where there are 10.3 mha. This intensive cropping system that is vital for food security in India has several environmental issues including depleted SOC, declining water tables, decreased soil fertility and reduced factor productivity. The paper describes various resource conserving technologies (RCT's) such as direct seeded rice (DSR), system of rice intensification (SRI), aerobic rice, brown manuring, crop residue incorporation, furrow irrigated raised bed system (FIRBS), zero tillage (ZT) and leaf colour chart (LCC) that not only improved the production and productivity but also maintained soil health. New emerging technologies like system of wheat intensification (SWI), LCC application for nitrogen management, bed transplanting in rice followed by laser levelling in wheat with zero tillage wheat, incorporation of rice residues over conventional transplanting also showed promising results. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320396/2022/11/26/novel-resource-conservation-technologies-for-increasing-the-production-and-productivity-of-rice-wheat-cropping-system-in-indo-gangetic-plains-of-india> <https://www.scoop.it/share/post/twitter/4138320396?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138320396?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138320396?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138320396> Targeted timing of hairy vetch cover crop termination with roller crimper can eliminate glyphosate requirements in no-till sunflower <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138318714/2022/11/26/targeted-timing-of-hairy-vetch-cover-crop-termination-with-roller-crimper-can-eliminate-glyphosate-requirements-in-no-till-sunflower> From link.springer.com <https://link.springer.com/article/10.1007/s13593-022-00815-2> - Today, 1:53 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138318714/2022/11/26/targeted-timing-of-hairy-vetch-cover-crop-termination-with-roller-crimper-can-eliminate-glyphosate-requirements-in-no-till-sunflower> Antichi, D., Carlesi, S., Mazzoncini, M. & Barberi, P. 2022. Agronomy for Sustainable Development. 42. Article 87. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138318714/2022/11/26/targeted-timing-of-hairy-vetch-cover-crop-termination-with-roller-crimper-can-eliminate-glyphosate-requirements-in-no-till-sunflower> https://doi.org/10.1007/s13593-022-00815-2 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper looks at the impact of no-till and cover crops on soil health with sunflower following durum wheat in an on-farm trial in Italy. Direct sowing of sunflower following the dead mulch of a roller-crimped hairy vetch was compared with the use of glyphosate to terminate the vetch and control weeds. In this 3-year experiment, they compared three vetch termination stages (early: pre-flowering; Intermediate: beginning of flowering; late: 70% flowering) and three glyphosate rates (Nil, half and full). Vetch biomass increased from early to late termination and the extra biomass resulted in lower weed biomass. Treatments had inconsistent effects on weed diversity and composition, largely determined by the interactions between treatments and seasonal (different years) or local factors. They conclude that targeted timing of roller-crimped hairy vetch in no-till sunflower can result in equal agronomic and economic performances as addition of glyphosate. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138318714/2022/11/26/targeted-timing-of-hairy-vetch-cover-crop-termination-with-roller-crimper-can-eliminate-glyphosate-requirements-in-no-till-sunflower> <https://www.scoop.it/share/post/twitter/4138318714?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138318714?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138318714?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138318714> Effects of Conservation Tillage on Soil Properties and Maize Yield in Karst Regions, Southwest China <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319455/2022/11/26/effects-of-conservation-tillage-on-soil-properties-and-maize-yield-in-karst-regions-southwest-china> From www.mdpi.com <https://www.mdpi.com/2077-0472/12/9/1449> - Today, 1:24 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319455/2022/11/26/effects-of-conservation-tillage-on-soil-properties-and-maize-yield-in-karst-regions-southwest-china> Bai, L., Kong, X., Li, H., Zhu, H., Wang, C. & Ma, S. 2022. Agriculture. 12 (9). Article number 1449. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319455/2022/11/26/effects-of-conservation-tillage-on-soil-properties-and-maize-yield-in-karst-regions-southwest-china> https://doi.org/10.3390/agriculture12091449 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This article looks at the impact of conservation tillage in maize in the Karst rocky region of SW China where desertification is a serious environmental problem. This 2-year study compared no-till + straw cover against traditional tillage (TT) in maize on soil properties and yield. The NT treatment increased soil moisture by 3% while reducing bulk density by 7% and total N by 5% in the top 30cm compared to TT. Nt treatments also increased maize yield by11% compared to TT. They conclude that NT + residue retention is better for long-term environmental sustainability in the arid region. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319455/2022/11/26/effects-of-conservation-tillage-on-soil-properties-and-maize-yield-in-karst-regions-southwest-china> <https://www.scoop.it/share/post/twitter/4138319455?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138319455?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138319455?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138319455> Ch 9. An Approach to Understand Conservation Agriculture <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138318381/2022/11/26/ch-9-an-approach-to-understand-conservation-agriculture> From doi.org <https://doi.org/10.1002/9781119808565.ch9> - Today, 12:26 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138318381/2022/11/26/ch-9-an-approach-to-understand-conservation-agriculture> Dey, A., Patel, S. & Singh, H.P. 2022. Pages 204-218. In. Kumar, P., Pandey, S.K., Singh, S.K., Singh, S.S. & Singh, V.K. (Eds.) Sustainable Agriculture Systems and Technologies. John Wiley & Sons. Chichester, UK. 376 pages. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138318381/2022/11/26/ch-9-an-approach-to-understand-conservation-agriculture> https://doi.org/10.1002/9781119808565.ch9 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This is chapter 9 of a new book looking at different sustainable sustainable agricultural systems. This chapter looks at CA as a possible way to increase productivity while protecting the environment in India and the Rice-Wheat areas of the IndoGangetic Plains. The chapter explains that CA has multiple agronomic, economic, and environmental benefits. However, in this region adoption of CA has many constraints and challenges including availability of skilled labor, burning of crop residue, alternate use of crop residue for feed and fuel, time taking process, and less information about conservation practices. The authors suggest the various stakeholders work together to promote CA in South Asia. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138318381/2022/11/26/ch-9-an-approach-to-understand-conservation-agriculture> <https://www.scoop.it/share/post/twitter/4138318381?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138318381?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138318381?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138318381> Conservation Agriculture in Maize-based Cropping System of Nepal: A Review <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319028/2022/11/26/conservation-agriculture-in-maize-based-cropping-system-of-nepal-a-review> From www.nepjol.info <https://www.nepjol.info/index.php/AJN/article/view/47953> - Today, 11:48 AM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319028/2022/11/26/conservation-agriculture-in-maize-based-cropping-system-of-nepal-a-review> Kaduwal, S., Karki, T.B., Neupane, R., Bhattarai, R.K., Chaulagain, B., Ghimire, P., Gyawaly, P. & Das, S.K. 2022. Agronomy Journal of Nepal. 6 (1) 119-131. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319028/2022/11/26/conservation-agriculture-in-maize-based-cropping-system-of-nepal-a-review> https://doi.org/10.3126/ajn.v6i1.47953 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This review looks at CA, its constraints and what is needed in a maize-based system in Nepal, where little has been reported in Nepal despite the results being promising. Some of the constraints found include machinery, competition for residues between CA and livestock, skilled manpower, and overcoming the mindset of using tillage. But CA was found to reduce costs of production, improve resource efficiency including water and nutrients and increase yield. This management system should be promoted in the hills and Terai areas of Nepal. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319028/2022/11/26/conservation-agriculture-in-maize-based-cropping-system-of-nepal-a-review> <https://www.scoop.it/share/post/twitter/4138319028?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138319028?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138319028?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138319028> Greenhouse gas emissions from the wheat-maize cropping system under different tillage and crop residue management practices in the North China Plain <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138322054/2022/11/26/greenhouse-gas-emissions-from-the-wheat-maize-cropping-system-under-different-tillage-and-crop-residue-management-practices-in-the-north-china-plain> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0048969722001796> - Today, 3:36 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138322054/2022/11/26/greenhouse-gas-emissions-from-the-wheat-maize-cropping-system-under-different-tillage-and-crop-residue-management-practices-in-the-north-china-plain> Pu, C., Chen, J-S., Wang, H-D., Virk, A.L., Zhao, X. & Zhang, H-L. 2022. Science of the Total Environment. 819. Article number 153089. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138322054/2022/11/26/greenhouse-gas-emissions-from-the-wheat-maize-cropping-system-under-different-tillage-and-crop-residue-management-practices-in-the-north-china-plain> https://doi.org/10.1016/j.scitotenv.2022.153089 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This 4-year study assessed the effects of tillage and crop residue management on GHG emissions. They found that no-till (NT) decreased N2O emissions by 22.6% compared with conventional tillage (CT) in winter wheat but there was no difference between tillage practices in summer maize. Crop residue retention (+R) increased N2O emissions by 28.1% and 26.7% compared with residue removal (−R) in winter wheat and summer maize seasons, respectively. NT soils took up more CH4 compared with the CT soils in summer maize seasons. Crop residue retention improved the maize yield compared with the residue removal treatments. They conclude that no-till practice could be an option to mitigate non-CO2 GHG emissions in the wheat – maize cropping systems. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138322054/2022/11/26/greenhouse-gas-emissions-from-the-wheat-maize-cropping-system-under-different-tillage-and-crop-residue-management-practices-in-the-north-china-plain> <https://www.scoop.it/share/post/twitter/4138322054?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138322054?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138322054?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138322054> Conservation agriculture affects soil organic matter distribution, microbial metabolic capacity and nitrogen turnover under Danish field conditions. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319862/2022/11/26/conservation-agriculture-affects-soil-organic-matter-distribution-microbial-metabolic-capacity-and-nitrogen-turnover-under-danish-field-conditions> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0167198722001945> - Today, 3:12 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319862/2022/11/26/conservation-agriculture-affects-soil-organic-matter-distribution-microbial-metabolic-capacity-and-nitrogen-turnover-under-danish-field-conditions> Wacker, T.S., Jensen, L.S. & Thorup-Kristensen, K. 2022. Soil and Tillage Research. 224. Article number 105508. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319862/2022/11/26/conservation-agriculture-affects-soil-organic-matter-distribution-microbial-metabolic-capacity-and-nitrogen-turnover-under-danish-field-conditions> https://doi.org/10.1016/j.still.2022.105508 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: The aim of this danish study was to investigate how CA induced SOM stratification affects carbon and nitrogen turnover. Two Danish farms were selected with conventional ploughing (CP) and CA. They looked at SOM stratification to 50cm depth from the two treatments. They also looked at C and N mineralization patterns in lab incubation studies. Average stratification ratio, the ratio between soil C and N content in the upper 5 cm and at 20–30 cm, the depth of the plough layer in the ploughed system, was 1.86 and 1.61 under CA and 1.04 and 1.06 under P. Carbon respiration from intact soil core incubation was affected by soil total carbon content, and showed stronger stratification in CA than in P. They conclude that carbon and nitrogen mineralization, as well as microbial metabolic capacity were strongly affected by an increased stratification ratio of organic matter in CA. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319862/2022/11/26/conservation-agriculture-affects-soil-organic-matter-distribution-microbial-metabolic-capacity-and-nitrogen-turnover-under-danish-field-conditions> <https://www.scoop.it/share/post/twitter/4138319862?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138319862?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138319862?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138319862> Long-term conservation agriculture increases nitrogen use efficiency by crops, land equivalent ratio and soil carbon stock in a subtropical rice-based cropping system <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319728/2022/11/26/long-term-conservation-agriculture-increases-nitrogen-use-efficiency-by-crops-land-equivalent-ratio-and-soil-carbon-stock-in-a-subtropical-rice-based-cropping-system> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0378429022002076> - Today, 2:32 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319728/2022/11/26/long-term-conservation-agriculture-increases-nitrogen-use-efficiency-by-crops-land-equivalent-ratio-and-soil-carbon-stock-in-a-subtropical-rice-based-cropping-system> Kader, M.A., Jahangir, M.M.R., Islam, M.R., Begum, R., Nasreen, S.S., Islam, Md.R., Mahmud, A.Al., Haque, M.E., Bell, R.W., & Jahiruddin, M. 2022. Field Crops Research. 287. Article number 108636. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319728/2022/11/26/long-term-conservation-agriculture-increases-nitrogen-use-efficiency-by-crops-land-equivalent-ratio-and-soil-carbon-stock-in-a-subtropical-rice-based-cropping-system> https://doi.org/10.1016/j.fcr.2022.108636 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper from Bangladesh looked at intensively grown (3 crops per year) rice-based cropping systems and various management options. This 9-year study examined various 2 soil disturbance - strip tillage (ST) and conventional tillage (CT); two residue retention levels –15% residue by height (low residue, LR) and 30% residue (high residue, HR) and five N rates (60%, 80%, 100%, 120%, and 140% of the recommended N for a rice-wheat-mungbean system. Rice yields were comparable between the two tillage systems for up to year-6, wheat for up to year-3 but mungbean yield markedly increased in ST from year-1. Introduction of ST increased land equivalent ratio by 26% relative to CT, N use efficiency and partial factor productivity. They conclude that by practicing CA with increased residue retention under strip tillage, the crops had higher N use efficiency, grain yield, land equivalent ratio and annual gross margin in the rice-wheat-mungbean cropping system. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319728/2022/11/26/long-term-conservation-agriculture-increases-nitrogen-use-efficiency-by-crops-land-equivalent-ratio-and-soil-carbon-stock-in-a-subtropical-rice-based-cropping-system> <https://www.scoop.it/share/post/twitter/4138319728?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138319728?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138319728?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138319728> Review of Research Progress on Soil Organic Cover Machinery in China <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320335/2022/11/26/review-of-research-progress-on-soil-organic-cover-machinery-in-china> From www.mdpi.com <https://www.mdpi.com/2077-0472/12/9/1311> - Today, 2:05 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320335/2022/11/26/review-of-research-progress-on-soil-organic-cover-machinery-in-china> Lin, H., He, J., Li, H., Li, H., Wang, Q., Lu., C., Li, Y. & Jiang, S. 2022. Agriculture. 12 (9) Article number 1311. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320335/2022/11/26/review-of-research-progress-on-soil-organic-cover-machinery-in-china> https://doi.org/10.3390/agriculture12091311 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper looks at ways to solve the issue of managing soil organic cover in CA in China. It looks at the effects of this organic mulch and what equipment/machinery works best. The aim of this review was to improve the soil organic cover quality and reduce energy consumption by reviewing the common and commercial equipment available in China. The current problems and technical difficulties of the machines were expounded. Simultaneously, the method of design and optimization of the device (chopper, spreader, rotary tiller, and plow) and its key parts (blades, discs, and plows) were reviewed and compared. Their conclusions look at future directions for soil organic cover technology and machinery development including clarifying the soil organic cover effect, selecting the suitable soil organic cover patterns, and developing soil organic cover machinery. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320335/2022/11/26/review-of-research-progress-on-soil-organic-cover-machinery-in-china> <https://www.scoop.it/share/post/twitter/4138320335?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138320335?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138320335?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138320335> Factors influencing the adoption of conservation agriculture by smallholder farmers in KwaZulu-Natal, South Africa <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319501/2022/11/26/factors-influencing-the-adoption-of-conservation-agriculture-by-smallholder-farmers-in-kwazulu-natal-south-africa> From www.degruyter.com <https://www.degruyter.com/document/doi/10.1515/opag-2022-0098/html> - Today, 1:36 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319501/2022/11/26/factors-influencing-the-adoption-of-conservation-agriculture-by-smallholder-farmers-in-kwazulu-natal-south-africa> Nkonki-Mandleni, B., Manenzhe, N.G. & Omotayo, A.O. 2022. Open Agriculture. 7 (1) 596-604. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319501/2022/11/26/factors-influencing-the-adoption-of-conservation-agriculture-by-smallholder-farmers-in-kwazulu-natal-south-africa> https://doi.org/10.1515/opag-2022-0098 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This study looks at the factors that affect the adoption of CA in Southern Africa using a structured questionnaire from 273 smallholder farmers. The results showed that the respondents’ age, access to credit, visits by extension agents, and training showed a significant influence on the adoption of CA practices by farmers. They concluded that extension agents need to guide and train farmers including illiterate farmers on CA through all inclusive services. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138319501/2022/11/26/factors-influencing-the-adoption-of-conservation-agriculture-by-smallholder-farmers-in-kwazulu-natal-south-africa> <https://www.scoop.it/share/post/twitter/4138319501?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138319501?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138319501?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138319501> Land Use, Productivity, and Profitability of Traditional Rice–Wheat System Could be Improved by Conservation Agriculture. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320002/2022/11/26/land-use-productivity-and-profitability-of-traditional-rice-wheat-system-could-be-improved-by-conservation-agriculture> From ojs.nassg.org <https://ojs.nassg.org/index.php/rwae/article/view/516> - Today, 12:46 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320002/2022/11/26/land-use-productivity-and-profitability-of-traditional-rice-wheat-system-could-be-improved-by-conservation-agriculture> Hossain, M.M., Begum, M. & Bell, R.W. 2022. Research on World Agricultural Economy. 3 (2). Article number 516. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320002/2022/11/26/land-use-productivity-and-profitability-of-traditional-rice-wheat-system-could-be-improved-by-conservation-agriculture> http://dx.doi.org/10.36956/rwae.v3i2.516 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This is an interesting paper from Bangladesh on their rice-wheat systems and the benefits that could be obtained by adopting CA based on recent research on-farm over two year on this topic. The conventional system (CS) was plowing followed by three manual weedings without residue from the previous crop. This was compared with CA where Pre-plant herbicide + single tillage + pre-emergence herbicide + post-emergence herbicide; under rice–wheat and rice–wheat–mungbean systems. The CA was the more cost effective establishment system compared to CS one. Productivity increased in all three crops and by 43% when mungbean was included in the system. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138320002/2022/11/26/land-use-productivity-and-profitability-of-traditional-rice-wheat-system-could-be-improved-by-conservation-agriculture> <https://www.scoop.it/share/post/twitter/4138320002?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138320002?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138320002?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138320002> Effects of Straw Mulching and Reduced Tillage on Crop Production and Environment: A Review <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138317785/2022/11/26/effects-of-straw-mulching-and-reduced-tillage-on-crop-production-and-environment-a-review> From www.mdpi.com <https://www.mdpi.com/2073-4441/14/16/2471> - Today, 12:01 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138317785/2022/11/26/effects-of-straw-mulching-and-reduced-tillage-on-crop-production-and-environment-a-review> Du, C., Li, L. & Effah, Z. 2022. Water. 14 (16) Article number 2471. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138317785/2022/11/26/effects-of-straw-mulching-and-reduced-tillage-on-crop-production-and-environment-a-review> https://doi.org/10.3390/w14162471 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper looks at various impacts on water of various sustainable agricultural measures. Straw retention and reduced tillage were mentioned as the most successful measures in arid and semi-arid regions. As such this review looks at these two factors in respect of SOM, soil moisture, soil temperature, soil microorganisms, soil enzyme activity, soil fertility, soil carbon emissions, pests, weeds, soil erosion, water use efficiency and yield under different tillage systems. Straw mulching increased SOM, soil moisture and reduced drought, but can increase pest and diseases and change the microbial community. But straw mulch does enhance WUE and yield. Reducing tillage maintained soil integrity, which is conducive to soil and water conservation. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4138317785/2022/11/26/effects-of-straw-mulching-and-reduced-tillage-on-crop-production-and-environment-a-review> <https://www.scoop.it/share/post/twitter/4138317785?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4138317785?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4138317785?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4138317785> ######################################################################## To unsubscribe from the CA-Cop-L list, click the following link: &*TICKET_URL(CA-Cop-L,SIGNOFF);