*Global CA-CoP* *CONSERVATION AGRICULTURE COMMUNITY OF* *for sustainable agriculture, land use and ecosystem management* Dear Subscribers, Please see herebelow the June 2022 Conservation Agriculture Research Newsletter from Cornell. 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 URL: http://www.act-africa.org/ URL: https://ecaf.org/ URL: http://www.caa-ap.org/ ---------- Forwarded message --------- From: Peter Hobbs <[log in to unmask]> Date: Wed, 1 Jun 2022 at 15:15 Subject: June 2022 CA research newsletter To: Amir Kassam <[log in to unmask]> Dear Amir: Here is our June 2022 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 - June 2022] <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag> Conservation Agriculture Research Updates - June 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> Conservation Agriculture for Soil Health and Carbon Sequestration <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726723/2022/05/28/conservation-agriculture-for-soil-health-and-carbon-sequestration> Today, 7:35 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726723/2022/05/28/conservation-agriculture-for-soil-health-and-carbon-sequestration> Maity, P.P., Jayaraman, S., Datta, A., Mondal, S., Parihar, C.M., Choudhary, M., Jha, P., Bhattacharyya, R., Bandyopadhyay, K.K. & Chakraborty, D. 2022. Journal of Agricultural Physics. 21 (Special Issue Article) 145-164. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726723/2022/05/28/conservation-agriculture-for-soil-health-and-carbon-sequestration> https://www.researchgate.net/publication/359209813_Conservation_Agriculture_for_Soil_Health_and_ Carbon_Sequestration *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This Meta data analysis showed that NT significantly improved mean weight diameter (MWD) and field capacity moisture content by 19-58% and 6-16%, respectively, and resulted in no significant change in bulk density (BD), but infiltration rate increased by 66%. CA improves SOC stocks by addition of more C inputs through greater biomass production and reduction in SOC losses due to surface soil cover and locking SOC in soil aggregates. This causes net sequestration of atmospheric C into the soil, leading to climate change mitigation. Findings of a majority of studies suggest that CA can be a potential alternative to the conventional agricultural practices for managing soil health and improving soil C stock, and thereby sustaining productivity and mitigate climate change. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726723/2022/05/28/conservation-agriculture-for-soil-health-and-carbon-sequestration> <https://www.scoop.it/share/post/twitter/4132726723?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132726723?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132726723?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132726723> Conservation Agriculture in Africa <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724741/2022/05/28/conservation-agriculture-in-africa> Today, 7:14 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724741/2022/05/28/conservation-agriculture-in-africa> Mkomwa, S. & Kassam, A. 2022. CABI, UK. 20 chapters, 536 pages <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724741/2022/05/28/conservation-agriculture-in-africa> https://www.cabi.org/bookshop/book/9781789245752/ *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This is a new book published in 2022 specifically looking at CA in Africa. A table of contents can be found by clicking the CABI.org link above. The forward for this book says "Conservation Agriculture (the use of no tillage systems) to preserve soil structure and integrity has become an increasingly important step towards sustainable farming. This book brings together conservation agriculture and climate smart decision making processes for the first time, focusing on Africa. It describes how farmers in Africa are successfully adopting Conservation Agriculture as an alternative to the unsustainable conventional farming practices and as a solution to loss of agricultural productivity, soil erosion and land degradation, climate change challenges and ever-increasing food insecurity." <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724741/2022/05/28/conservation-agriculture-in-africa> <https://www.scoop.it/share/post/twitter/4132724741?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132724741?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132724741?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132724741> Successful Experiences and Lessons from Conservation Agriculture Worldwide <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132725708/2022/05/28/successful-experiences-and-lessons-from-conservation-agriculture-worldwide> From www.mdpi.com <https://www.mdpi.com/2073-4395/12/4/769> - Today, 6:52 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132725708/2022/05/28/successful-experiences-and-lessons-from-conservation-agriculture-worldwide> Kassam, A., Friedrich, T. & Derpsch, R. 2022. Agronomy. 12 (4) Article number 769. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132725708/2022/05/28/successful-experiences-and-lessons-from-conservation-agriculture-worldwide> https://doi.org/10.3390/agronomy12040769 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper is included as it provides data on the progress and acreage of CA globally. The article says CA since 2008/09 has expanded globally at an annual rate of more than 10Mha per year. It has risen to 205.4 Mha in 2018-19 or 14.7% of global cropland area. The spread in Asia, Africa and Europe was suggested as due to better organized farmers and better networking. Expansion is also mainly farmer driven. The paper has several lessons elaborated from the global spread of CA responding to 5 key questions. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132725708/2022/05/28/successful-experiences-and-lessons-from-conservation-agriculture-worldwide> <https://www.scoop.it/share/post/twitter/4132725708?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132725708?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132725708?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132725708> Furrow-irrigated corn residue management and tillage strategies for improved soil health. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724710/2022/05/28/furrow-irrigated-corn-residue-management-and-tillage-strategies-for-improved-soil-health> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0167198721003111> - Today, 6:28 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724710/2022/05/28/furrow-irrigated-corn-residue-management-and-tillage-strategies-for-improved-soil-health> Afshar, R.K., Cabot, P., Banet, T., Li, L. & Ippolito, J.A. 2022. Soil and Tillage Research. 216. Article number 105238 <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724710/2022/05/28/furrow-irrigated-corn-residue-management-and-tillage-strategies-for-improved-soil-health> https://doi.org/10.1016/j.still.2021.105238 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This study was conducted to evaluate the effects of maize residue management and tillage (CT vs NT) on soil health using the Soil Management Assessment Framework. After three years, maize yields were 15% greater under NT than CT. They conclude that understanding the importance of crop residue utilization in conjunction with no-till practices in surface irrigated agroecosystems can influence the adoption of sustainable management practices and should directly contribute to long-term soil health improvements and agroecosystem sustainability. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724710/2022/05/28/furrow-irrigated-corn-residue-management-and-tillage-strategies-for-improved-soil-health> <https://www.scoop.it/share/post/twitter/4132724710?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132724710?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132724710?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132724710> Conservation Agriculture for Climate Change Adaptation and Mitigation in India <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726259/2022/05/28/conservation-agriculture-for-climate-change-adaptation-and-mitigation-in-india> Today, 1:42 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726259/2022/05/28/conservation-agriculture-for-climate-change-adaptation-and-mitigation-in-india> Pathak, H., Srinivasrao, C. & Jat, M.L. 2021. Journal of Agricultural Physics. 21 (Special Issue) 182-196. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726259/2022/05/28/conservation-agriculture-for-climate-change-adaptation-and-mitigation-in-india> https://www.researchgate.net/publication/358958590_Conservation_Agriculture_for_Climate_Change_ Adaptation_and_Mitigation_in_India *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper explains some of the benefits of CA adoption in India including a yield advantage, water savings, reduction in costs, increased net returns, reduction in global warming potential and other climatic benefits. They estimate that global warming potential of about 25 Mt CO2 eq. i.e., about 15% of the emission from the crop sector (agricultural soil, rice cultivation and crop residue burning) is mitigated by the adoption of various CA practices and other mitigation technologies in India. But adoption is hindered. They conclude that business models need to be developed for creating custom hiring centers, manufacturing hubs and enhanced capacity development of the stakeholders to realize the full benefits from CA. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726259/2022/05/28/conservation-agriculture-for-climate-change-adaptation-and-mitigation-in-india> <https://www.scoop.it/share/post/twitter/4132726259?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132726259?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132726259?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132726259> Next Steps for Conservation Agriculture <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132702997/2022/05/27/next-steps-for-conservation-agriculture> From www.mdpi.com <https://www.mdpi.com/2073-4395/11/12/2496> - May 27, 3:33 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132702997/2022/05/27/next-steps-for-conservation-agriculture> Landers, J.N., de Freitas, P.L., de Oliveira, M.C., da Silva Nato, S.P., Ralisch, R. & Kueneman, E.A. 2021. Agronomy. 11 (12) # 2496 <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132702997/2022/05/27/next-steps-for-conservation-agriculture> https://doi.org/10.3390/agronomy11122496 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper reports the origins, history and recent advances in CA and report that CA is now practiced on about 200 mha globally. They mention that regenerative agriculture (RA) have no scientific definition but generally adopt CA. This paper suggests that a single definition for agricultural sustainability via a multi-stakeholder world congress would standardize certification and de-confuse the market. RA describes exactly what CA does for soil health and all farmers need to unite around a new “Combined Regenerative Agriculture” (CRA) to lobby for adequate payments for environmental services. The paper also says expansion of CA is critical for world sustainability. Many gaps and constraints exist, especially for smallholders. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132702997/2022/05/27/next-steps-for-conservation-agriculture> <https://www.scoop.it/share/post/twitter/4132702997?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132702997?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132702997?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132702997> Removal of Biomass and Nutrients by Weeds and Direct-Seeded Rice under Conservation Agriculture in Light-Textured Soils of North-Western India. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132703014/2022/05/27/removal-of-biomass-and-nutrients-by-weeds-and-direct-seeded-rice-under-conservation-agriculture-in-light-textured-soils-of-north-western-india> From www.mdpi.com <https://www.mdpi.com/2223-7747/10/11/2431> - May 27, 2:53 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132703014/2022/05/27/removal-of-biomass-and-nutrients-by-weeds-and-direct-seeded-rice-under-conservation-agriculture-in-light-textured-soils-of-north-western-india> Dhaliwal, S.S., Sharma, S., Shukla, A.K., Sharma, V., Bhullar, M.S., Dhaliwal, T.K., Alorabi, M., Alotaibi, S.S., Gaber, A. & Hossain, A. 2021. Plants. 10 (11) Article number 2431. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132703014/2022/05/27/removal-of-biomass-and-nutrients-by-weeds-and-direct-seeded-rice-under-conservation-agriculture-in-light-textured-soils-of-north-western-india> https://doi.org/10.3390/plants10112431 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper looks at the transition from conventional flooded transplanted rice to direct seeded rice in NW India. The main challenge in these light textured soils is weeds. This study looked at the removal of nutrients by weeds under three different rice treatments as main plots (DSR-ZT; DSR-CT; DSR-RT) and three sub-plots under the following wheat (CTW-R; ZTW-R; ZTW+R using a happy seeder). Overall, the research study concluded that weeds on an average remove 25.65 % macronutrients (N, P, K) and 51.47% of micronutrients (Zn, Cu, Fe and Mn) in DSR under rice-wheat cropping system. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132703014/2022/05/27/removal-of-biomass-and-nutrients-by-weeds-and-direct-seeded-rice-under-conservation-agriculture-in-light-textured-soils-of-north-western-india> <https://www.scoop.it/share/post/twitter/4132703014?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132703014?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132703014?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132703014> Outburst of pest populations in rice-based cropping systems under conservation agricultural practices in the middle Indo-Gangetic Plains of South Asia. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132725739/2022/05/28/outburst-of-pest-populations-in-rice-based-cropping-systems-under-conservation-agricultural-practices-in-the-middle-indo-gangetic-plains-of-south-asia> From www.nature.com <https://www.nature.com/articles/s41598-022-07760-w> - Today, 7:26 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132725739/2022/05/28/outburst-of-pest-populations-in-rice-based-cropping-systems-under-conservation-agricultural-practices-in-the-middle-indo-gangetic-plains-of-south-asia> Kumar, R., Choudhary, J.S. Mishra, J.S., Mondal, S., Poonia, S., Monobrullah, Md., Hans, H., Verma, M., Kumar, U., Bhatt, B.P., Malik, R.K., Kumat, V. & McDonald, A. 2022. Scientific Reports. 12. Article number 3753. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132725739/2022/05/28/outburst-of-pest-populations-in-rice-based-cropping-systems-under-conservation-agricultural-practices-in-the-middle-indo-gangetic-plains-of-south-asia> https://doi.org/10.1038/s41598-022-07760-w *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This study looks at the impact of long-term CA production systems under rice-based cropping systems on pest status. In this study, direct and indirect effects of tillage (zero, reduced and conventional tillage), residue retention and cropping sequences on abundance and damage by pests were investigated. After 4–5 years of experimentation, populations of oriental armyworm in wheat, mealybug and bandicoot rat in rice were found to increase abnormally in CA-based production systems. Conventionally tilled plots had a significant negative effect while residue load in zero-tilled plots had a significant positive effect on larval population build-up of armyworm. Based on the present study, pest management strategies in CA need to be revisited with respect to tillage, residue retention on soil surface, grassy weeds in the field and cropping sequences to deliver the full benefits of CA in MIGP to achieve the sustainable development goals under the climate change scenarios. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132725739/2022/05/28/outburst-of-pest-populations-in-rice-based-cropping-systems-under-conservation-agricultural-practices-in-the-middle-indo-gangetic-plains-of-south-asia> <https://www.scoop.it/share/post/twitter/4132725739?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132725739?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132725739?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132725739> Conservation Agriculture Benefits Indian Farmers, but Technology Targeting Needed for Greater Impacts. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726699/2022/05/28/conservation-agriculture-benefits-indian-farmers-but-technology-targeting-needed-for-greater-impacts> From www.frontiersin.org <https://www.frontiersin.org/articles/10.3389/fagro.2022.772732/full> - Today, 7:04 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726699/2022/05/28/conservation-agriculture-benefits-indian-farmers-but-technology-targeting-needed-for-greater-impacts> Krishna, V.V., Keil, A., Jain, M., Zhou, W., Jose, M., Surendran-Padmaja, S., Barba-Escota, L., Singh, B., Jat, M.L. & Erenstein, O. 2022. Frontiers in Agronomy. 4. Article number 772732. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726699/2022/05/28/conservation-agriculture-benefits-indian-farmers-but-technology-targeting-needed-for-greater-impacts> https://doi.org/10.3389/fagro.2022.772732 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This study looks at CA in the rice-wheat system of the IGP of India as having the potential to curb negative environmental and health issues in this important cropping system. They also say that adoption of CA is still only modest in this geographic area. The study focuses on the constraints to adopting zero-tillage in RW. Econometric models and machine learning algorithms were used to analyze remote sensing data and farm household data collected from two contrasting locations in the west and east of the IGP. They showed that while farmer adoption was low among smallholders (owning <2 ha of land), the on-farm effects of ZT on variable cost reduction and yield and profit enhancement for smallholders were comparable to larger farms. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726699/2022/05/28/conservation-agriculture-benefits-indian-farmers-but-technology-targeting-needed-for-greater-impacts> <https://www.scoop.it/share/post/twitter/4132726699?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132726699?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132726699?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132726699> Stability of humic acid carbon under conservation agriculture practices. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726670/2022/05/28/stability-of-humic-acid-carbon-under-conservation-agriculture-practices> From linkinghub.elsevier.com <https://linkinghub.elsevier.com/retrieve/pii/S0167198721003135> - Today, 6:41 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726670/2022/05/28/stability-of-humic-acid-carbon-under-conservation-agriculture-practices> Data, A., Choudhury, M., Sharma, P.C., Priyanka, Jat, H.S., Jat, M.L. & Kar, S. 2022. Soil and Tillage Research. 216. Article number 105240. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726670/2022/05/28/stability-of-humic-acid-carbon-under-conservation-agriculture-practices> https://doi.org/10.1016/j.still.2021.105240 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This study had four scenarios Sc1. farmers practice transplanted rice (TPR) followed by conventional tilled broadcasted wheat (CT- wheat) with residue removal Sc2. TPR followed by zero tillage (ZT) wheat and mung bean with partial residue retention. Sc3. direct seeded rice (DSR) followed by ZT- wheat and mung bean with full residue retention and Sc4. ZT-maize followed by ZT-wheat and mung bean.They were used to study the humic acid (HA) content and stability of soil carbon with these scenarios. Sc4 recorded significantly higher HA content at 0–15 and 15–30 cm soil depth. They conclude that CA is efficient in enriching organic carbon but also a more stable complex of HA. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132726670/2022/05/28/stability-of-humic-acid-carbon-under-conservation-agriculture-practices> <https://www.scoop.it/share/post/twitter/4132726670?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132726670?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132726670?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132726670> Net effects of conservation agriculture principles on sustainable land use: A synthesis <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724319/2022/05/28/net-effects-of-conservation-agriculture-principles-on-sustainable-land-use-a-synthesis> From doi.org <https://doi.org/10.1111/gcb.15906> - Today, 1:56 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724319/2022/05/28/net-effects-of-conservation-agriculture-principles-on-sustainable-land-use-a-synthesis> Xiao, L., Kuhn, N.J., Zhao, R. & Cao, L. 2021. Global Change Biology. 27 (24) 6321-6330. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724319/2022/05/28/net-effects-of-conservation-agriculture-principles-on-sustainable-land-use-a-synthesis> https://doi.org/10.1111/gcb.15906 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper suggests that to till or not to till is still a confusing question for many farmers. The objective of this paper is to clearly distinguish between the different principles of CA, and determine the net effects of NT on improving and sustaining agro-ecosystems based on 49 recent meta-analyses. The study concludes that no-tillage by itself leads to yield declines, whereas residue retention is the main driver for yield increases. The same result was found for water erosion control and carbon sequestration with residue retention once again a key driver for improvement. They conclude that to till, or not to till, is not the question: residue retention seems more critical. This supports some other data that no-till by itself is not optimal but with residue retention it becomes beneficial. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724319/2022/05/28/net-effects-of-conservation-agriculture-principles-on-sustainable-land-use-a-synthesis> <https://www.scoop.it/share/post/twitter/4132724319?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132724319?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132724319?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132724319> Machine learning model accurately predict maize grain yields in conservation agriculture systems in Southern Africa. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724255/2022/05/28/machine-learning-model-accurately-predict-maize-grain-yields-in-conservation-agriculture-systems-in-southern-africa> From ieeexplore.ieee.org <https://ieeexplore.ieee.org/document/9530335/> - Today, 1:31 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724255/2022/05/28/machine-learning-model-accurately-predict-maize-grain-yields-in-conservation-agriculture-systems-in-southern-africa> Muthoni, F., Thierfelder, C., Mudereri, B., Manda, J., Bekunda, M. & Hoeschle-Zeledon, I. 2021. 9th International Conference on Agro-Geoinformatics, Agro-Geoinformatics. Shenzhen, China. Code 171647. 5 pages <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724255/2022/05/28/machine-learning-model-accurately-predict-maize-grain-yields-in-conservation-agriculture-systems-in-southern-africa> https://doi.org/10.1109/Agro-Geoinformatics50104.2021.9530335 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This study estimated the the spatial-temporal variations of maize yields from 13-year on-farm trials from 4 countries in Southern Africa. Agronomic data from long-term CA trials is used with gridded biophysical and socioeconomic variables. Comparisons were made between CA and CT practices with above and below average precipitation. The variable importance analysis showed that the altitude, precipitation, temperature, and soil physical and nutrients conditions variables explained most of the variation in maize grain yield. Maps were generated to identify the locations where CA had a yield advantage over CP during seasons with below and above-average precipitation. The paper concludes that multi-source remotely sensed data, coupled with advanced and efficient machine learning algorithms provides accurate, cost-effective, and timely platforms for predicting the optimal locations for upscaling sustainable agricultural technologies. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132724255/2022/05/28/machine-learning-model-accurately-predict-maize-grain-yields-in-conservation-agriculture-systems-in-southern-africa> <https://www.scoop.it/share/post/twitter/4132724255?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132724255?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132724255?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132724255> Continuous Practice of Conservation Agriculture for 3–5 Years in Intensive Rice-Based Cropping Patterns Reduces Soil Weed Seedbank. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132703039/2022/05/27/continuous-practice-of-conservation-agriculture-for-3-5-years-in-intensive-rice-based-cropping-patterns-reduces-soil-weed-seedbank> From www.mdpi.com <https://www.mdpi.com/2077-0472/11/9/895> - May 27, 3:08 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132703039/2022/05/27/continuous-practice-of-conservation-agriculture-for-3-5-years-in-intensive-rice-based-cropping-patterns-reduces-soil-weed-seedbank> Hossain, M.M., Begum, M., Hashem, A., Rahman, M.M., Haque, M.E. & Bell, R. 2021. Agriculture (Switzerland) 11 (9). # 895. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132703039/2022/05/27/continuous-practice-of-conservation-agriculture-for-3-5-years-in-intensive-rice-based-cropping-patterns-reduces-soil-weed-seedbank> https://doi.org/10.3390/agriculture11090895 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This is another paper looking at the shift from CT to CA and the issue of weeds and in this paper the weed seed bank. Two on-farm CA experiments were sampled at two sites in Bangladesh for the effects of strip planting (SP) and bed planting (BP), plus no-tillage (NT) in one site with increased retention of the residue of previous crops (20% vs. 50%). The conventional tillage (CT) and 20% residue was the control treatment. The weed seedbank in 0–15 cm soil was quantified by assessing the emergence of weeds from soils collected from the field after irrigation i rice and after wheat. The fewest number of weed species (especially broadleaf weeds), and the lowest weed density and biomass was in SP, followed by CT, BP, and NT, with 50% crop residue mulch. Relative to CT, the SP, BP, and NT produced relatively more perennials weeds. They conclude that continuous CA, for 3 or more years, in two rice-based crop rotations, decreased the size of the weed seedbank, but increased the relative proliferation of specific perennial weeds. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132703039/2022/05/27/continuous-practice-of-conservation-agriculture-for-3-5-years-in-intensive-rice-based-cropping-patterns-reduces-soil-weed-seedbank> <https://www.scoop.it/share/post/twitter/4132703039?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132703039?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132703039?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132703039> Biological soil quality and seasonal variation on enzyme activities under conservation agriculture-based rice-mustard system in the Indo-Gangetic Plains of India <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132701893/2022/05/27/biological-soil-quality-and-seasonal-variation-on-enzyme-activities-under-conservation-agriculture-based-rice-mustard-system-in-the-indo-gangetic-plains-of-india> From www.publish.csiro.au <https://www.publish.csiro.au/sr/SR21054> - May 27, 2:40 PM <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132701893/2022/05/27/biological-soil-quality-and-seasonal-variation-on-enzyme-activities-under-conservation-agriculture-based-rice-mustard-system-in-the-indo-gangetic-plains-of-india> Biswas, S., Das, T.K., Bhattacharyya, R., Das, S. & Dwivedi, B.S. 2021. Soil Research: 59. 15 pages. <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132701893/2022/05/27/biological-soil-quality-and-seasonal-variation-on-enzyme-activities-under-conservation-agriculture-based-rice-mustard-system-in-the-indo-gangetic-plains-of-india> https://doi.org/10.1071/SR21054 *Cornell Conservation Agriculture Group (soilhealth.org <http://soilhealth.org>)*'s insight: This paper looks at biological soil quality in the IGP of India in rice-based cropping looking at tillage and residue management. The objectives of this study were to determine the effect of seasonal variation on enzyme activity and assessing biological soil quality (BSQ) under conservation agriculture (CA)-based rice-mustard cropping. They collected soil samples in the 9th year from two soil depths and looked at biological attributes. They found that the CA-based NT systems with rice-mungbean-mustard with residues had the best biological attributes and recommend this system in India <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4132701893/2022/05/27/biological-soil-quality-and-seasonal-variation-on-enzyme-activities-under-conservation-agriculture-based-rice-mustard-system-in-the-indo-gangetic-plains-of-india> <https://www.scoop.it/share/post/twitter/4132701893?forceAnonymous=1> <https://www.scoop.it/share/post/facebook/4132701893?forceAnonymous=1> <https://www.scoop.it/share/post/linkedin/4132701893?forceAnonymous=1> <https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4132701893> <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);