*Global CA-CoP* *CONSERVATION AGRICULTURE COMMUNITY OF PRACTICE*

*for sustainable agriculture, land use and ecosystem management*

Dear Subscribers,

Please see herebelow the December 2021 Conservation Agriculture Scoopit
Research Update from Cornell.

Thank you Peter for sharing.



*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 Dec 2021 at 13:34
Subject: December CUCA Scoopit newsletter
To: Amir Kassam <[log in to unmask]>


Dear Amir: Here is our December 2021 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 - December 2021]
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag>
Conservation Agriculture Research Updates - December 2021
<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>

Adapting to Climate Change Through Conservation Agriculture: A Gendered
Analysis of Eastern Zambia.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530796/2021/11/29/adapting-to-climate-change-through-conservation-agriculture-a-gendered-analysis-of-eastern-zambia>
From www.frontiersin.org
<https://www.frontiersin.org/articles/10.3389/fsufs.2021.748300/full> - Today,
4:18 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530796/2021/11/29/adapting-to-climate-change-through-conservation-agriculture-a-gendered-analysis-of-eastern-zambia>
Umar, B.B. 2021. Frontiers in Sustainable Food Systems. 5. 748300. 18
pages. Open Access.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530796/2021/11/29/adapting-to-climate-change-through-conservation-agriculture-a-gendered-analysis-of-eastern-zambia>
https://doi.org/10.3389/fsufs.2021.748300
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This paper used 761 household interviews and 33 focus group discussions
with smallholder farmers in Zambia on how female and male farmers see CA
helping with climate change. Results show that men and women farmers had
similar experiences of climate change, namely late onset of a shortened
rainy season, intra-seasonal drought and higher temperatures. The study
concludes that there is room for CA to serve as a climate smart
agricultural system for both men and women smallholder farmers in Eastern
Zambia. However, this will require addressing important challenges of high
weed pressure, high labor demands, and low access to manure, and CA farming
implements.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530796/2021/11/29/adapting-to-climate-change-through-conservation-agriculture-a-gendered-analysis-of-eastern-zambia>
<https://www.scoop.it/share/post/twitter/4128530796?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128530796?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128530796?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128530796>
Long‐term effect of tillage and straw retention in conservation agriculture
systems on soil carbon storage.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530740/2021/11/29/long-term-effect-of-tillage-and-straw-retention-in-conservation-agriculture-systems-on-soil-carbon-storage>
From acsess.onlinelibrary.wiley.com
<https://acsess.onlinelibrary.wiley.com/doi/10.1002/saj2.20312> - Today,
3:48 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530740/2021/11/29/long-term-effect-of-tillage-and-straw-retention-in-conservation-agriculture-systems-on-soil-carbon-storage>
Gomez-Munoz, B., Jensen, L.S., Munkholm, L., Olesen, J.E., Moller, H.E. &
Bruun, S. 2021. Soil Science Society of America Journal. 85 (5) 1465-1478.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530740/2021/11/29/long-term-effect-of-tillage-and-straw-retention-in-conservation-agriculture-systems-on-soil-carbon-storage>
https://doi.org/10.1002/saj2.20312
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This is second paper highlighted from the SSSA special section on CA. This
study aimed to evaluate the effect of 17 yr of residue retention (with and
without) and tillage (plowing and no-till) on soil C storage on two Danish
sandy loam soils with different clay and SOC content under cool temperate
humid climate conditions. Straw retention reduced bulk density at both
sites. It also increased the C concentration with 0.47 mg C g–1 dry soil on
average from 2002 to 2019. Tillage altered the C distribution in the soil
profile, so that the C concentration in the upper layer (0–25 cm) was
higher in the no-till soils, but did not significantly increase total C
concentration in deeper layers (0–50 cm).
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530740/2021/11/29/long-term-effect-of-tillage-and-straw-retention-in-conservation-agriculture-systems-on-soil-carbon-storage>
<https://www.scoop.it/share/post/twitter/4128530740?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128530740?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128530740?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128530740>
Intensification of no‐till agricultural systems: An opportunity for carbon
sequestration.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527923/2021/11/29/intensification-of-no-till-agricultural-systems-an-opportunity-for-carbon-sequestration>
From acsess.onlinelibrary.wiley.com
<https://acsess.onlinelibrary.wiley.com/doi/10.1002/saj2.20260> - Today,
3:35 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527923/2021/11/29/intensification-of-no-till-agricultural-systems-an-opportunity-for-carbon-sequestration>
Nicoloso, R.S. & Rice, C.W. 2021. Soil Science Society of America Journal.
85 (5) 1395-1409.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527923/2021/11/29/intensification-of-no-till-agricultural-systems-an-opportunity-for-carbon-sequestration>
https://doi.org/10.1002/saj2.20260
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This paper presents the results of a global meta-analysis of studies
assessing SOC and total N (TN) storage and dynamics in NT and tilled soils
from the most important agricultural regions of the world. Overall, their
results show that NT soils stored 6.7 ± 1.9 Mg C ha–1 and 1.1 ± 0.4 Mg N
ha–1 more than tilled soils (0-to-100-cm depth) with an average of 16 yr of
NT, in contrast with previous findings that found little or no soil organic
C (SOC) accrual in NT soils as compared with full inversion tillage when
soils are sampled deeper than 30 cm. However, C sequestration (+4.7 ± 1.9
Mg C ha–1 in the 0-to-60-cm depth with an average of 11 yr of NT) depended
on the association of NT with increased crop frequency and the inclusion of
legumes cover crops. Briefly, their findings indicate that NT can avoid SOC
losses from tilled soils, partially offsetting CO2 emissions from
agriculture.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527923/2021/11/29/intensification-of-no-till-agricultural-systems-an-opportunity-for-carbon-sequestration>
<https://www.scoop.it/share/post/twitter/4128527923?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128527923?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128527923?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128527923>
Conservation Agriculture farming systems in rainfed annual crop production
in South Africa.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527774/2021/11/29/conservation-agriculture-farming-systems-in-rainfed-annual-crop-production-in-south-africa>
From www.tandfonline.com
<https://www.tandfonline.com/doi/abs/10.1080/02571862.2020.1797195> - Today,
2:28 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527774/2021/11/29/conservation-agriculture-farming-systems-in-rainfed-annual-crop-production-in-south-africa>
Antwerpen, R. van., Laker, M.C., Beukes, D.J., Botha, J.J. Collett, A. &
Plessis, M. du. 2021. South African Journal of Plant and Soil. 38. (3).
202-216.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527774/2021/11/29/conservation-agriculture-farming-systems-in-rainfed-annual-crop-production-in-south-africa>
https://doi.org/10.1080/02571862.2020.1797195
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This paper focuses on soil and water agricultural conservation systems for
South Africa. The objective of this paper is to summarize Conservation
Agriculture (CA) systems practiced in South Africa. These include measures
to control wind and water erosion as well as soil compaction through
implementation of rip on the row, vertical mulching, controlled traffic,
crusting control, mulching, water harvesting and crop rotation. No-tillage
is not in the scope of this paper, although aspects of reduced and minimum
tillage are covered. The paper concludes that CA specialists should be
trained to assist farmers in the selection, adoption and implementation of
appropriate CA systems.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527774/2021/11/29/conservation-agriculture-farming-systems-in-rainfed-annual-crop-production-in-south-africa>
<https://www.scoop.it/share/post/twitter/4128527774?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128527774?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128527774?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128527774>
Aligning Conservation Agriculture among various disciplines in South Africa.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527714/2021/11/29/aligning-conservation-agriculture-among-various-disciplines-in-south-africa>
From www.tandfonline.com
<https://www.tandfonline.com/doi/abs/10.1080/02571862.2021.1954249> - Today,
2:06 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527714/2021/11/29/aligning-conservation-agriculture-among-various-disciplines-in-south-africa>
Swanepoel, P.A. 2021. South African Journal of Plant and Soil. 38 (3).
185-195.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527714/2021/11/29/aligning-conservation-agriculture-among-various-disciplines-in-south-africa>
https://doi.org/10.1080/02571862.2021.1954249
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This paper is based on a workshop held in 2019 with delegates from various
institutions, Government and the private sector to share experiences and
lessons and to identify research gaps in CA in South Africa. The main
conclusions were that CA is applicable to most farming systems, but is
context specific. No specific CA practice can be recommended as a panacea
to solve issues experienced in all systems. Adaptation and application of
CA within different South African farming systems needs to be dealt with
sensibly and realistically, in ways that are based on practical rather than
purely theoretical considerations. It is important that CA is not advocated
without taking sustainable intensification into account. Dealing with CA
sensibly requires a multidisciplinary approach.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527714/2021/11/29/aligning-conservation-agriculture-among-various-disciplines-in-south-africa>
<https://www.scoop.it/share/post/twitter/4128527714?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128527714?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128527714?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128527714>
Chapter 14. No-Till Farming in the Maghreb Region | Enhancing Agricultural
Productivity and Sequestering Carbon in Soils.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528635/2021/11/29/chapter-14-no-till-farming-in-the-maghreb-region-enhancing-agricultural-productivity-and-sequestering-carbon-in-soils>
From www.taylorfrancis.com
<https://www.taylorfrancis.com/chapters/edit/10.1201/9781003102762-14/till-farming-maghreb-region-rachid-mrabet-rachid-moussadek-mina-devkota-rattan-lal>
- Today, 1:46 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528635/2021/11/29/chapter-14-no-till-farming-in-the-maghreb-region-enhancing-agricultural-productivity-and-sequestering-carbon-in-soils>
Mrabet, R., Moussadek, R., Devkota, M. & Lal, R. 2021. In. Lal, R. (Ed.)
Soil Organic Matter and Feeding the Future. Chapter 14. 26 pages. eBook
ISBN 9781003102762
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528635/2021/11/29/chapter-14-no-till-farming-in-the-maghreb-region-enhancing-agricultural-productivity-and-sequestering-carbon-in-soils>
https://doi.org/10.1201/9781003102762-14
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This is the second chapter highlighted from Rattan Lal's 2021 book on Soil
Organic Matter. This chapter collates and synthetizes the information on
research in relation to improvements in achieving sustainability and
mitigating anthropogenic climate change—through adoption of no-till (NT)
systems over existing conventional agriculture systems (e.g. crop
productivity, soil quality, erosion control, and carbon emissions and
sequestration). It concludes that conversion to NT systems for management
and control of soil erosion can also reduce losses of SOC in water- or
wind-transported sediments and contribute to reducing emissions and
sequestration of carbon.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528635/2021/11/29/chapter-14-no-till-farming-in-the-maghreb-region-enhancing-agricultural-productivity-and-sequestering-carbon-in-soils>
<https://www.scoop.it/share/post/twitter/4128528635?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128528635?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128528635?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128528635>
Soil Organic Matter and Feeding the Future
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530399/2021/11/29/soil-organic-matter-and-feeding-the-future>
From www.taylorfrancis.com
<https://www.taylorfrancis.com/books/edit/10.1201/9781003102762/soil-organic-matter-feeding-future-rattan-lal>
- Today, 1:22 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530399/2021/11/29/soil-organic-matter-and-feeding-the-future>
Lal, R. 2021. Book with 15 Chapters. 428 Pages.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530399/2021/11/29/soil-organic-matter-and-feeding-the-future>
https://doi.org/10.1201/9781003102762
https://www.taylorfrancis.com/books/edit/10.1201/9781003102762/soil-organic-matter-feeding-future-rattan-lal?refId=d6d1f81a-480d-4709-8b2b-85f7616ca344&context=ubx
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This is a new book in 2021 with links to the DOI and the Taylor and Francis
website covering soil organic matter a primary determinant of soil
functionality. This volume of Advances in Soil Sciences aims to accomplish
the following: a) Present impacts of land use and soil management on SOC
dynamics. b) Discuss effects of SOC levels on agronomic productivity and
use efficiency of inputs. c) Detail potential of soil management on the
rate and cumulative amount of carbon sequestration in relation to land use
and soil/crop management. d) Deliberate the cause-effect relationship
between SOC content and provisioning of some ecosystem services. e) Relate
soil organic carbon stock to soil properties and processes f) Establish the
relationship between soil organic carbon stock with land and climate
Identify controls of making soil organic carbon stock as a source or sink
of CO2. g) Connect soil organic carbon and carbon sequestration for climate
mitigation and adaptation. Two chapters are listed above that describe the
role of CA in SOM.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128530399/2021/11/29/soil-organic-matter-and-feeding-the-future>
<https://www.scoop.it/share/post/twitter/4128530399?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128530399?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128530399?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128530399>
Impact of nitrogen management and tillage practices on nitrous oxide
emissions from rainfed corn.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528181/2021/11/29/impact-of-nitrogen-management-and-tillage-practices-on-nitrous-oxide-emissions-from-rainfed-corn>
From acsess.onlinelibrary.wiley.com
<https://acsess.onlinelibrary.wiley.com/doi/10.1002/saj2.20285> - Today,
11:31 AM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528181/2021/11/29/impact-of-nitrogen-management-and-tillage-practices-on-nitrous-oxide-emissions-from-rainfed-corn>
Arango, M.A. & Rice, C.W. 2021. Soil Science Society of America Journal. 85
(5) 1425-1436.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528181/2021/11/29/impact-of-nitrogen-management-and-tillage-practices-on-nitrous-oxide-emissions-from-rainfed-corn>
https://doi.org/10.1002/saj2.20285
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
85% of N20 emissions are related to N fertilizer in agriculture. This paper
looks at ways to reduce N20 emissions in agriculture by limiting optimal
soil N and water for production of this GHG. The objective was to assess
N2O emissions from different N management strategies under long-term
tillage systems. Treatments included (a) source (compost and urea) and (b)
placement (broadcast and surface-banded application of urea under
conventional till and no-till systems). Overall, soil N2O emissions were
affected by the availability of inorganic N and precipitation rather than
tillage. Banded application of N increased overall N2O emissions by 30%
compared with broadcast N application without affecting yield and N uptake.
Synthetic N sources increased N20 more than organic ones but carbon content
of organics could increase emissions.  .
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528181/2021/11/29/impact-of-nitrogen-management-and-tillage-practices-on-nitrous-oxide-emissions-from-rainfed-corn>
<https://www.scoop.it/share/post/twitter/4128528181?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128528181?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128528181?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128528181>
Effects of land use, tillage management, and crop diversification on soil
physical quality in Cerrado agricultural systems.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528927/2021/11/29/effects-of-land-use-tillage-management-and-crop-diversification-on-soil-physical-quality-in-cerrado-agricultural-systems>
From acsess.onlinelibrary.wiley.com
<https://acsess.onlinelibrary.wiley.com/doi/10.1002/saj2.20306> - Today,
4:02 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528927/2021/11/29/effects-of-land-use-tillage-management-and-crop-diversification-on-soil-physical-quality-in-cerrado-agricultural-systems>
Sattolo, T.M.S., Pereira, L.M., Otto, R., Francisco, E., Duarte, A.P.,
Kappes, C., Prochnow, L.I. & Cherubin, M.R. 2021. Soil Science Society of
America Journal. 85 (5) 1799-1813.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528927/2021/11/29/effects-of-land-use-tillage-management-and-crop-diversification-on-soil-physical-quality-in-cerrado-agricultural-systems>
https://doi.org/10.1002/saj2.20306
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This is another paper from the SSSA special section on CA. This study aimed
to assess the effects of land use, tillage management, and crop
diversification on soil physical quality of two long-term experiments in
the Cerrado of Brazil through on-farm visual evaluation of soil structure
(VESS) and soil physical parameters. Soil sampling was performed in
0-to-10- and 10-to-20-cm layers of four agricultural systems: soybean
[Glycine max (L.) Merr.]–fallow under conventional tillage (SF);
soybean–fallow under no-till (SN); soybean–maize (Zea mays L.) succession
under no-till (SM); and crop rotation under no-till including soybean,
maize, grasses, and legumes (CR). Native vegetation was kept as a check
(NV). The study highlights that intensified agricultural systems need to be
coupled with strategies to reduce and/or control intensive machinery
traffic.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528927/2021/11/29/effects-of-land-use-tillage-management-and-crop-diversification-on-soil-physical-quality-in-cerrado-agricultural-systems>
<https://www.scoop.it/share/post/twitter/4128528927?forceAnonymous=1>
<https://www.scoop.it/share/post/facebook/4128528927?forceAnonymous=1>
<https://www.scoop.it/share/post/linkedin/4128528927?forceAnonymous=1>
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128528927>
The role of conservation agriculture on mitigating greenhouse gas emissions
and enhancing carbon sequestration in soils.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527932/2021/11/29/the-role-of-conservation-agriculture-on-mitigating-greenhouse-gas-emissions-and-enhancing-carbon-sequestration-in-soils>
From acsess.onlinelibrary.wiley.com
<https://acsess.onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.20323> - Today,
3:43 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527932/2021/11/29/the-role-of-conservation-agriculture-on-mitigating-greenhouse-gas-emissions-and-enhancing-carbon-sequestration-in-soils>
Drury, C.F., Johnson, J.M.F. & Rice, C.W. 2021. Soil Science Society of
America Journal. 85 (5) 1332-1333.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527932/2021/11/29/the-role-of-conservation-agriculture-on-mitigating-greenhouse-gas-emissions-and-enhancing-carbon-sequestration-in-soils>
https://doi.org/10.1002/saj2.20323
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This paper looks at mitigation practices for GHG emissions and indicate
that agriculture can be both a source of GHG emissions and a sink. They
indicate that CA is a suite of management practices that can be used to
reduce emissions and/or enhance C sequestration in soils. The Conservation
Agriculture Network is a network of the Croplands Research Group of the
Global Research Alliance on Agricultural Greenhouse Gases. The CA network
identified reduced tillage, crop rotations, cover crops, residue
management, and improved irrigation systems as some of the management
strategies that can be used to achieve these goals. Ten peer-reviewed
papers are published in this special section of the Soil Science Society of
America Journal.They include seven field studies, two modeling studies
(using field data), and one meta-analysis paper. Collectively, these
articles provide examples of CA benefits related to reducing N2O emissions
and enhancing C sequestration in soils.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527932/2021/11/29/the-role-of-conservation-agriculture-on-mitigating-greenhouse-gas-emissions-and-enhancing-carbon-sequestration-in-soils>
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Soil fertility trends and management in Conservation Agriculture.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527817/2021/11/29/soil-fertility-trends-and-management-in-conservation-agriculture>
From www.tandfonline.com
<https://www.tandfonline.com/doi/abs/10.1080/02571862.2021.1896039> - Today,
2:43 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527817/2021/11/29/soil-fertility-trends-and-management-in-conservation-agriculture>
Nortje, G.P. & Laker, M.C. 2021. South African Journal of Plant and Soil.
38 (3) 247-257.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527817/2021/11/29/soil-fertility-trends-and-management-in-conservation-agriculture>
https://doi.org/10.1080/02571862.2021.1896039
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This paper highlights some of the issues, plus and minus, with CA in South
Africa. On the plus side there are benefits in increases in SOM and
organic-N in soils. On the negative side, experiments show strong
stratification of important plant nutrients (P, K, and Ca) at shallow soil
depths due to low mobility in the soil. Results to date have also
demonstrated poor root development near the soil surface under the extreme
conditions in the marginal cropping areas that dominate most of South
Africa’s crop production areas causing lower nutrient uptake in no-till
compared to conventional tillage. Poor movement of lime also affects soil
acidity. Also maize needs more nitrogen under NT than CT.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128527817/2021/11/29/soil-fertility-trends-and-management-in-conservation-agriculture>
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<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128527817>
Conservation Agriculture in rainfed annual crop production in South Africa.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528733/2021/11/29/conservation-agriculture-in-rainfed-annual-crop-production-in-south-africa>
From www.tandfonline.com
<https://www.tandfonline.com/doi/abs/10.1080/02571862.2021.1891472> - Today,
2:21 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528733/2021/11/29/conservation-agriculture-in-rainfed-annual-crop-production-in-south-africa>
Strauss, J.A., Swanepoel, P.A., Laker, M.C. & Smith, H.J. 2021. South
African Journal of Plant and Soil. 38 (3) 217-230.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528733/2021/11/29/conservation-agriculture-in-rainfed-annual-crop-production-in-south-africa>
https://doi.org/10.1080/02571862.2021.1891472
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
In South Africa, arable land for crop production and permanent pastures
accounts for 10–12% of the total land surface. South Africa is classified
as semi-arid, with the average rainfall below the global average.This paper
describes the role CA can play in more water use efficient agriculture that
is not only for grain crops  but also other agricultural commodities. This
review highlights the results of research to date and the challenges for
practicing rainfed conservation agriculture in South Africa.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528733/2021/11/29/conservation-agriculture-in-rainfed-annual-crop-production-in-south-africa>
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<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128528733>
Introduction to the Special Issue on Conservation Agriculture in South
Africa.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528669/2021/11/29/introduction-to-the-special-issue-on-conservation-agriculture-in-south-africa>
From www.tandfonline.com
<https://www.tandfonline.com/doi/abs/10.1080/02571862.2021.2003578> - Today,
1:59 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528669/2021/11/29/introduction-to-the-special-issue-on-conservation-agriculture-in-south-africa>
Franke, A.C. 2021. South African Journal of Plant and Soil. 38 (3). 3
pages.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528669/2021/11/29/introduction-to-the-special-issue-on-conservation-agriculture-in-south-africa>
https://doi.org/10.1080/02571862.2021.2003578
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This is an introduction to the special volume in the South African Journal
of Plant and Soil. Four papers from this issue will be highlighted above
for those interested in CA in South Africa. A 5th on the History of CA in
South Africa was included in an earlier CUCA November Scoopit newsletter.CA
has gained importance in this country over the last decade with reported
adoption rates and interest by farmers. The various chapters provide an
integrated discussion of the various contributions leading to the
development of a research agenda around the key themes of CA in South
Africa and the question of how CA approaches can contribute to sustainable
intensification. Others focus on contributions in the fields of annual crop
production, orchards and vineyards, irrigated agriculture, soil fertility
management, soil surveying and weed control.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528669/2021/11/29/introduction-to-the-special-issue-on-conservation-agriculture-in-south-africa>
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<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128528669>
Chapter 4. Global Spread of Conservation Agriculture for Enhancing Soil
Organic Matter, Soil Health, Productivity, and Ecosystem services.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528602/2021/11/29/chapter-4-global-spread-of-conservation-agriculture-for-enhancing-soil-organic-matter-soil-health-productivity-and-ecosystem-services>
From www.taylorfrancis.com
<https://www.taylorfrancis.com/chapters/edit/10.1201/9781003102762-4/global-spread-conservation-agriculture-enhancing-soil-organic-matter-soil-health-productivity-ecosystem-services-amir-kassam-emilio-gonzalez-sanchez-rosa-carbonell-bojollo-theodor-friedrich-rolf-derpsch>
- Today, 1:36 PM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528602/2021/11/29/chapter-4-global-spread-of-conservation-agriculture-for-enhancing-soil-organic-matter-soil-health-productivity-and-ecosystem-services>
Kassam, A., Gonzalez-Sanchez, E., Friedrich, T. & Derpsch, R. 2021. In.
Lal, R. (Ed.). Soil Organic Matter and Feeding the Future. Chapter 4. 36
pages. ISBN eBook 9781003102762
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528602/2021/11/29/chapter-4-global-spread-of-conservation-agriculture-for-enhancing-soil-organic-matter-soil-health-productivity-and-ecosystem-services>
https://doi.org/10.1201/9781003102762-4
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This chapter looks at the role and spread of CA on SOM that is vital for
soil biological, physical, chemical and hydrological properties that also
helps soil retain and release nutrients and water for crop growth. It
contends that mechanical disturbance of soil by tillage agriculture is one
of the most serious environmental consequences that results in SOM
decomposition, mineralization and C02 emissions.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528602/2021/11/29/chapter-4-global-spread-of-conservation-agriculture-for-enhancing-soil-organic-matter-soil-health-productivity-and-ecosystem-services>
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<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag?rescoopPostId=4128528602>
Untangling soil‐weather drivers of daily N2O emissions and fertilizer
management mitigation strategies in no‐till corn.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528215/2021/11/29/untangling-soil-weather-drivers-of-daily-n2o-emissions-and-fertilizer-management-mitigation-strategies-in-no-till-corn>
From acsess.onlinelibrary.wiley.com
<https://acsess.onlinelibrary.wiley.com/doi/10.1002/saj2.20292> - Today,
11:41 AM
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528215/2021/11/29/untangling-soil-weather-drivers-of-daily-n2o-emissions-and-fertilizer-management-mitigation-strategies-in-no-till-corn>
Bastos, L.M., Rice, C.W., Tomlinson, P.J. & Mengal, D. 2021. Soil Science
Society of America. 85 (5) 1437-1447.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528215/2021/11/29/untangling-soil-weather-drivers-of-daily-n2o-emissions-and-fertilizer-management-mitigation-strategies-in-no-till-corn>
https://doi.org/10.1002/saj2.20292
*Cornell Conservation Agriculture Group (soilhealth.org)*'s insight:
This a second article on N20 emissions looking at soil-weather effects
using a conditional inference tree (CIT)  learning method able to untangle
complex interactions while providing an interpretation model. The goals of
this study were (a) to assess the effect of N fertilizer on N2O emissions,
and to use CIT to identify (b) the main soil-weather drivers of daily N2O
hot moments and (c) fertilizer management options to mitigate them in a
2-year no-till maize experiment.2013 was drier and had less N20 emissions
than 2014. Only subsurface-banded fertilizer with a nitrification inhibitor
(NI) consistently abated N2O losses. The main hot moment conditions were
within ∼80 d of fertilizer application when soil temperature >15 °C and
WFPS >57%.
<https://www.scoop.it/topic/conservation-agriculture-by-conservation-ag/p/4128528215/2021/11/29/untangling-soil-weather-drivers-of-daily-n2o-emissions-and-fertilizer-management-mitigation-strategies-in-no-till-corn>
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