TY - BOOK AU - PRAKASH Chand TI - Growth analysis and productivity of cotton (Gossypium hirsutum L.) varieties as affected by sowing dates and nitrogen rates U1 - T 633.51 P74G PY - 1988/// CY - Ludhiana PB - PAU KW - COTTON -- VARIETIES -- GROWTH KW - AGRONOMY KW - COTTON -- FERTILIZERS AND MANURES KW - SOILS -- NITROGEN CONTENT N2 - Studies were conducted to see the effect of source and sink removal (control, 50%, 62.5% and 75% foliage/flower removal) in 3 cotton varieties (LH-372, LH-900 and F-414). Stu1ies also included the effect of sowing dates and N levels on above 3 cotton vari ER -