TY  - BOOK
AU  - Swarn Singh
TI  - Tillage management for cotton residues and nitrogen requirements of wheat in cotton -wheat system
U1  - T 631.51 S96T 
PY  - 1992///
CY  - Ludhiana
PB  - PAU
KW  - TILLAGE
KW  - COTTON
KW  - CROP ROTATION
KW  - NITROGEN FERTILIZERS
KW  - WHEAT - FERTILIZERS
N2  - An experiment was conducted at the Research Farm of Department of Agronomy, Punjab Agricultural University, Ludhiana (Punjab) during 1990-91 to study "Tillage management for cotton residues and nitrogen requirements of wheat in cotton-wheat system", Five
ER  -