TY  - BOOK
AU  - Harjit Singh
TI  - Influence of continuous fertilzation to a maize- wheat sequence on the changes in soil properties of P. release
U1  - T 631.8 H30I 
PY  - 1992///
CY  - Ludhiana
PB  - P.A.U.
KW  - SOIL FERTILITY
KW  - CROP ROTATION
KW  - MAIZE - - FERTILIZERS AND MANURES
KW  - WHEAT - - FERTILIZER AND MANURES
N2  - Organic carbon and available nutrients and micronutrients tended to decline with cropping Phosphorus application at both the rates (40 & 80 kg P205 ha-1) alongwith N significantly increased the organic carbon (OC) content. The available N status was nearl
ER  -