Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India
Given the increasing scarcity of production resources such as water, energy and labour coupled with growing climatic risks, maize-based production systems could be potential alternatives to intensive rice-wheat (RW) rotation in western Indo-Gangetic Plains (IGP). Conservation agriculture (CA) in maize systems has been widely promoted for minimizing soil degradation and ensuring sustainability under emerging climate change scenario. Such practices are also believed to provide mitigation co–benefits through reduced GHG emission and increased soil carbon sequestration. However, the combined effects of diversified crop rotations and CA-based management on GHG mitigation potential and other co-benefits are generally over looked and hence warrant greater attention. A field trial was conducted for 5–years to assess the changes in soil organic carbon fractions, mineral–N, N2O emission and global warming potential (GWP) of maize-based production systems under different tillage & crop establishment methods. Four diversified cropping systems i.e. maize–wheat–mungbean (MWMb), maize–chickpea–Sesbania (MCS), maize–mustard–mungbean (MMuMb) and maize–maize–Sesbania (MMS) were factorially combined with three tillage & crop establishment methods i.e. zero tilled permanent beds (PB), zero–tillage flat (ZT) and conventional tillage (CT) in a split–plot design. After 5–years of continued experimentation, we recorded that across the soil depths, SOC content, its pools and mineral-N fractions were greatly affected by tillage & crop establishment methods and cropping systems. ZT and PB increased SOC stock (0–30 cm depth) by 7.22–7.23 Mg C ha−1 whereas CT system increased it only by 0.88 Mg C ha−1as compared to initial value. Several researchers reported that SOC & mineral–N fraction contents in the top 30 cm soil depth are correlated with N2O–N emission. In our study, global warming potential (GWP) under CT system was higher by 18.1 and 17.4%, compared to CA-based ZT and PB, respectively. Among various maize systems, GWP of MMS were higher by 11.2, 6.7 and 6.6%, compared that of MWMb (1212 kg CO2–eq. ha−1), MCS (1274 kg CO2–eq. ha−1) and MMuMb (1275 kg CO2–eq. ha−1), respectively. The results of our study suggest that CA and diversified crop rotations should be promoted in north-western IGP and other similar agro-ecologies across the globe for ensuring food security, restoration of soil health and climate change mitigation, the key sustainable development goals (SDGs).
Main Authors: | , , , , , , , , , , , |
---|---|
Format: | Journal Article biblioteca |
Language: | English |
Published: |
Elsevier
2018-11
|
Subjects: | food security, agriculture, climate change, |
Online Access: | https://hdl.handle.net/10568/100298 https://www.sciencedirect.com/science/article/pii/S004896971832062X?via%3Dihub https://doi.org/10.1016/j.scitotenv.2018.05.405 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cgspace-10568-100298 |
---|---|
record_format |
koha |
spelling |
dig-cgspace-10568-1002982023-12-08T19:36:04Z Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India Parihar, CM Parihar, MD Sapkota, Tek Bahadur Nanwal, RK Singh, A.K. Jat, Shankar Lal Nayak, HS Mahala, DM Singh, L.K. Kakraliya, S.K. Stirling, Clare M. Jat, Mangi Lal food security agriculture climate change Given the increasing scarcity of production resources such as water, energy and labour coupled with growing climatic risks, maize-based production systems could be potential alternatives to intensive rice-wheat (RW) rotation in western Indo-Gangetic Plains (IGP). Conservation agriculture (CA) in maize systems has been widely promoted for minimizing soil degradation and ensuring sustainability under emerging climate change scenario. Such practices are also believed to provide mitigation co–benefits through reduced GHG emission and increased soil carbon sequestration. However, the combined effects of diversified crop rotations and CA-based management on GHG mitigation potential and other co-benefits are generally over looked and hence warrant greater attention. A field trial was conducted for 5–years to assess the changes in soil organic carbon fractions, mineral–N, N2O emission and global warming potential (GWP) of maize-based production systems under different tillage & crop establishment methods. Four diversified cropping systems i.e. maize–wheat–mungbean (MWMb), maize–chickpea–Sesbania (MCS), maize–mustard–mungbean (MMuMb) and maize–maize–Sesbania (MMS) were factorially combined with three tillage & crop establishment methods i.e. zero tilled permanent beds (PB), zero–tillage flat (ZT) and conventional tillage (CT) in a split–plot design. After 5–years of continued experimentation, we recorded that across the soil depths, SOC content, its pools and mineral-N fractions were greatly affected by tillage & crop establishment methods and cropping systems. ZT and PB increased SOC stock (0–30 cm depth) by 7.22–7.23 Mg C ha−1 whereas CT system increased it only by 0.88 Mg C ha−1as compared to initial value. Several researchers reported that SOC & mineral–N fraction contents in the top 30 cm soil depth are correlated with N2O–N emission. In our study, global warming potential (GWP) under CT system was higher by 18.1 and 17.4%, compared to CA-based ZT and PB, respectively. Among various maize systems, GWP of MMS were higher by 11.2, 6.7 and 6.6%, compared that of MWMb (1212 kg CO2–eq. ha−1), MCS (1274 kg CO2–eq. ha−1) and MMuMb (1275 kg CO2–eq. ha−1), respectively. The results of our study suggest that CA and diversified crop rotations should be promoted in north-western IGP and other similar agro-ecologies across the globe for ensuring food security, restoration of soil health and climate change mitigation, the key sustainable development goals (SDGs). 2018-11 2019-03-13T21:12:21Z 2019-03-13T21:12:21Z Journal Article Parihar CM, Parihar MD, Sapkota TB, Nanwal RK, Singh AK, Jat SL, Nayak HS, Mahala DM, Singh LK, Kakraliya SK, Stirling CM, Jat ML. 2018. Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India. Science of the Total Environment 640-641:1382-1392. 0048-9697 https://hdl.handle.net/10568/100298 https://www.sciencedirect.com/science/article/pii/S004896971832062X?via%3Dihub https://doi.org/10.1016/j.scitotenv.2018.05.405 en Copyrighted; all rights reserved Limited Access 1382-1392 Elsevier Science of the Total Environment |
institution |
CGIAR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cgspace |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CGIAR |
language |
English |
topic |
food security agriculture climate change food security agriculture climate change |
spellingShingle |
food security agriculture climate change food security agriculture climate change Parihar, CM Parihar, MD Sapkota, Tek Bahadur Nanwal, RK Singh, A.K. Jat, Shankar Lal Nayak, HS Mahala, DM Singh, L.K. Kakraliya, S.K. Stirling, Clare M. Jat, Mangi Lal Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India |
description |
Given the increasing scarcity of production resources such as water, energy and labour coupled with growing climatic risks, maize-based production systems could be potential alternatives to intensive rice-wheat (RW) rotation in western Indo-Gangetic Plains (IGP). Conservation agriculture (CA) in maize systems has been widely promoted for minimizing soil degradation and ensuring sustainability under emerging climate change scenario. Such practices are also believed to provide mitigation co–benefits through reduced GHG emission and increased soil carbon sequestration. However, the combined effects of diversified crop rotations and CA-based management on GHG mitigation potential and other co-benefits are generally over looked and hence warrant greater attention. A field trial was conducted for 5–years to assess the changes in soil organic carbon fractions, mineral–N, N2O emission and global warming potential (GWP) of maize-based production systems under different tillage & crop establishment methods. Four diversified cropping systems i.e. maize–wheat–mungbean (MWMb), maize–chickpea–Sesbania (MCS), maize–mustard–mungbean (MMuMb) and maize–maize–Sesbania (MMS) were factorially combined with three tillage & crop establishment methods i.e. zero tilled permanent beds (PB), zero–tillage flat (ZT) and conventional tillage (CT) in a split–plot design. After 5–years of continued experimentation, we recorded that across the soil depths, SOC content, its pools and mineral-N fractions were greatly affected by tillage & crop establishment methods and cropping systems. ZT and PB increased SOC stock (0–30 cm depth) by 7.22–7.23 Mg C ha−1 whereas CT system increased it only by 0.88 Mg C ha−1as compared to initial value. Several researchers reported that SOC & mineral–N fraction contents in the top 30 cm soil depth are correlated with N2O–N emission. In our study, global warming potential (GWP) under CT system was higher by 18.1 and 17.4%, compared to CA-based ZT and PB, respectively. Among various maize systems, GWP of MMS were higher by 11.2, 6.7 and 6.6%, compared that of MWMb (1212 kg CO2–eq. ha−1), MCS (1274 kg CO2–eq. ha−1) and MMuMb (1275 kg CO2–eq. ha−1), respectively. The results of our study suggest that CA and diversified crop rotations should be promoted in north-western IGP and other similar agro-ecologies across the globe for ensuring food security, restoration of soil health and climate change mitigation, the key sustainable development goals (SDGs). |
format |
Journal Article |
topic_facet |
food security agriculture climate change |
author |
Parihar, CM Parihar, MD Sapkota, Tek Bahadur Nanwal, RK Singh, A.K. Jat, Shankar Lal Nayak, HS Mahala, DM Singh, L.K. Kakraliya, S.K. Stirling, Clare M. Jat, Mangi Lal |
author_facet |
Parihar, CM Parihar, MD Sapkota, Tek Bahadur Nanwal, RK Singh, A.K. Jat, Shankar Lal Nayak, HS Mahala, DM Singh, L.K. Kakraliya, S.K. Stirling, Clare M. Jat, Mangi Lal |
author_sort |
Parihar, CM |
title |
Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India |
title_short |
Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India |
title_full |
Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India |
title_fullStr |
Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India |
title_full_unstemmed |
Long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of India |
title_sort |
long-term impact of conservation agriculture and diversified maize rotations on carbon pools and stocks, mineral nitrogen fractions and nitrous oxide fluxes in inceptisol of india |
publisher |
Elsevier |
publishDate |
2018-11 |
url |
https://hdl.handle.net/10568/100298 https://www.sciencedirect.com/science/article/pii/S004896971832062X?via%3Dihub https://doi.org/10.1016/j.scitotenv.2018.05.405 |
work_keys_str_mv |
AT pariharcm longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT pariharmd longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT sapkotatekbahadur longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT nanwalrk longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT singhak longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT jatshankarlal longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT nayakhs longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT mahaladm longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT singhlk longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT kakraliyask longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT stirlingclarem longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia AT jatmangilal longtermimpactofconservationagricultureanddiversifiedmaizerotationsoncarbonpoolsandstocksmineralnitrogenfractionsandnitrousoxidefluxesininceptisolofindia |
_version_ |
1787230767052488704 |