EFFECT OF NPK, MICRONUTRIENTS AND N-PLACEMENT ON THE GROWTH AND YIELD OF SUNFLOWER

摘要: A series of experiments was carried out at Students Farm, Sindh Agriculture University, Tandojam to evaluate the effect NPK, micronutrients and N-pl acement on growth yield sunflower during 2005-2006. The cv. HO-1 studied under 7 differen t NPK levels placement methods (0-0-0 kg ha -1 , 6030-30 (N as broadcast), 60-30-30 fertigation), 90-45-45 120-60-60 fertigation) varying zinc boron do ses (0-0, 10.0-1.5, 10.0-2.0, 15.0-1.5, 15.0-2.0, 2 0.0-1.5 20.0-2.0 Zn-B respectively). Both macronutrient micronutrien combinations showed significant differences enhanced plant parameters. valu es all crop parameters increased dose fertilizers increased. tallest height, maximum stem g irth, largest head diameter, most seeds heaviest seed weight index best (1738.0 ) were recorded application with 15-1.5 applied fertigation). Beyond these level m acro- responses not significant. traditional fertility app lication, broadcast N no more effective in achieving higher values than comparable N-fertigated plots . reason for N- fertigated may be that received equal amounts who le plot irrigation compared method. This study proved incorporation optimum fertilizer rowth yield. could