Work

Effect of Fertilizer and Manure Application on Soil Organic Carbon Sequestration, Soil Fertility and Yield Sustainability Under Maize-wheat Cropping System in Subtropical Mollisols

Year: 2020

Type: article

Abstract: A field experiment with nine treatments was initiated in 2014 on a Mollisol to study the effect of fertilizers (NPK) and farmyard manure (FYM) application with or without Azotobector or Zinc on yields, soil organic carbon (SOC) storage and sequestration and soil properties in maize-wheat rotation.After four years it was revealed that continuous application of 100% recommended dose of NPK+ FYM @ 5 t ha -1 recorded significantly higher grain yields of maize and wheat and N, P, and K removal by the system.Crops yield increased by 100% NPK alone or combined with FYM or Zn in the fourth year compared to the first year.Intercropping of cowpea with maize caused a reduction in maize yield but its residual effect enhanced wheat yield.Bulk density of surface soil reduced significantly from 1.4-4.3%over initial except in control and 50% NPK.Available N, P, K, and Zn increased under integrated use of NPK fertilizer and FYM or Zn but decreased more in control.Response to the application of 100% NPK was maximum to the tune of 1.31 t ha -1 for maize and 1.34 t ha -1 for wheat whereas least with cowpea intercropping.SOC content and storage/pool in the surface soil increased from 0.7-7.2% and 0.5-2.9%,respectively, in FYM applied plots over the initial level.Application of FYM @ 10 t ha + Azotobacter in cowpea intercropping sequestrated maximum SOC (0.14 Mg C ha -1 yr -1 ) but reduced yields of maize and wheat.Grain yield of maize rather than wheat was more closely correlated with SOC content and storage.Results suggested that continuous application of 100% NPK along with FYM @ 5 t ha -1 led to better soil fertility and yield sustainability.

Source: Journal of Experimental Biology and Agricultural Sciences

DOI: 10.18006/2020.8(4).390.401

Authors: Veer Singh, Amit Bhatnagar, Anil Kumar Pant, Ajaya Srivastava, S. P. Gangwar

Institution: Govind Ballabh Pant University of Agriculture and Technology

Language: English

Topic: Agricultural Science and Fertilization

Subfield: Soil Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Zero hunger, Life on land, Responsible consumption and production, Climate action

Open Access status: diamond

Funder: Indian Council of Agricultural Research