Premium
FERTILITY BUILDING UNDER GRASSES
Author(s) -
Sinha A. K.,
Chatterjee B. N.
Publication year - 1966
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1966.tb00465.x
Subject(s) - agronomy , soil water , aggregate (composite) , environmental science , nitrogen , soil fertility , total organic carbon , incubation , biology , soil science , chemistry , ecology , biochemistry , materials science , organic chemistry , composite material
Experiments were conducted to analyse the effect of 3‐year‐old grass plots, under a cut‐and‐carry system, on the yields of maize and groundnut crops, and at the same time to compare the relative importance of the water‐stable aggregates and the nitrogen status of the soil. The N reserves, organic carbon and water‐stable aggregate contents of soils were higher under grass plots than in the ploughed‐up‐fallow plots. Maize yields showed a close correlation with total soil N, mineralized N after incubation for 20 days, and water‐stable aggregate contents; groundnut yields showed close correlation only with water‐stable aggregates. The effects of the variations in soil N and in the water‐stable aggregate content of the soil on the yields of maize and groundnuts were examined by multiple regression analysis of data from a large number of plots.