Premium
Direct and Residual Effect of Slow Release Urea Fertilizers in Rice‐Wheat Cropping System
Author(s) -
Kolhe S. S.,
Mittra B. N.
Publication year - 1987
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1987.tb00262.x
Subject(s) - urea , agronomy , sowing , coated urea , crop , field experiment , cropping system , nitrogen , chemistry , fertilizer , mathematics , residual , biology , biochemistry , organic chemistry , algorithm
Field experiments were conducted for three consecutive years during 1979—80 to 1981—82 to find out the relative efficiency of different forms of urea fertilizer for rice and their residual effect on the succeeding crop of wheat. In rice crop, root zone placement of nitrogen as urea super granule 1.0 g size (USG) under puddled field condition was proved to be superior to other sources. The relative efficiency of USG, urea in splits and sulphur coated urea (SCU) was 116.92%, 107.71% and 101.41% respectively as compared to ordinary urea at planting. Significant residual effect on succeeding crop of wheat was recorded in case of SCU which was followed by USG, urea in splits and urea at planting.