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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Grain yield and carbon sequestration potential of post monsoon sorghum cultivation in Vertisols in the semi arid tropics of central India
Geoderma, Volume 175-176, Year 2012
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Description
Soil fertility management and water conservation strongly impact soil quality and agronomic production of Vertisols. Thus the data from a 22-year of soil fertility management experiment conducted in semi arid tropical region of central India was used to evaluate the impact of input of crop residue carbon (C) through sorghum (Sorghum bicolor L.) cultivation in post monsoon season in Vertisols. In addition, the use of chemical fertilizers and manuring on crop yield sustainability and soil organic carbon (SOC) sequestration was assessed to 1-m depth. Retention of crop residues of sorghum, and application of farmyard manure (FYM) equivalent to 25kgNha -1 along with 25kgNha -1 supplied through chemical fertilizers increased and maintained the SOC stock. Green leaf manuring with Leucaena clippings along with chemical fertilizers did not increase the SOC stock. However, a conjunctive use of crop residues and Leucaena clippings increased the profile SOC stock (68.5Mgha -1), an overall SOC build up (39.8%) and a high amount of SOC sequestration (14.4MgCha -1). These parameters were positively correlated with cumulative C input and also reflected in the sustainable yield index (SYI). Higher grain yield (1.19Mgha -1) through the application of 25kgN (CR)+25kgN (Leucaena) was obtained. For every Mg increase in SOC stock in the root zone there was 0.09Mgha -1 increase in grain yield of sorghum. Stabilization of the SOC stock (zero change under cropping) requires a minimum input of 1.1MgCha -1year -1. Application of 50kgNha -1 through chemical fertilizer also maintained the SOC stock at the antecedent SOC level. Therefore, a combined use of organic manure (crop residues and FYM) or green leaf manure along with chemical fertilizer is essential to enhancing SOC sequestration in sorghum cultivation in Vertisols during the post monsoon season in central India. © 2012 Elsevier B.V.
Authors & Co-Authors
Venkateswarlu, Bandi B.
India, Hyderabad
Central Research Institute for Dryland Agriculture India
Lal, Rattan A.
United States, Columbus
The Ohio State University
Singh, Anil Kumar
India, New Delhi
Indian Council of Agricultural Research
Kundu, Sumanta
India, Hyderabad
Central Research Institute for Dryland Agriculture India
Mishra, Pankaj Kumar
India, Hyderabad
Central Research Institute for Dryland Agriculture India
Prasad, Jasti Venkata Naga Satya
India, Hyderabad
Central Research Institute for Dryland Agriculture India
Mandal, Uttam Kumar
India, Hyderabad
Central Research Institute for Dryland Agriculture India
Statistics
Citations: 49
Authors: 7
Affiliations: 4
Identifiers
Doi:
10.1016/j.geoderma.2012.01.023
ISSN:
00167061
Research Areas
Environmental
Sexual And Reproductive Health
Study Approach
Quantitative