*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>
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<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>
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<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>
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<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>
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<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>
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<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>
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<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>
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<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>
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<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>
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<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>
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<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>
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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>
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<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>
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<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>
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