EFFECT OF INTEGRATED USE OF ORGANIC MANURES AND INORGANIC FERTILIZERS ON GRAIN YIELD OF WHEAT.

A study was conducted at Agronomic Research Institute, AARI, Faisalabad Pakistan during 2006-07 and 2007-08 to investigate the effect of integrated use of organic manures [farm yard manure (FYM) and sesbania (Sesbania rostrata) as green manure] and inorganic fertilizer on wheat yield. The treatments were; FYM @ 25 tons, green manure @ 4 tons, fertilizer @ 150-100-50 kg NPK, FYM @ 25 tons + 150-100-50 kg NPK, green manure @ 4 tons + 150-100-50 kg NPK, 75- 50-25 kg NPK, FYM @ 25 tons + 75-50-25 kg NPK, green manure @ 4 tons + 75- 50-25 kg NPK per hectare and control (no fertilizer). FYM and green manure were applied two months before sowing of wheat. Two years data revealed that treatment of green manure @ 4 tons + 150-100-50 kg NPK per hectare produced maximum spike bearing tillers dUring 2006-07 (474) and 2007-08 (478) followed by FYM @ 25 tons + 150-100-50 kg NPK (473 and 475). The same treatment also performed better during both years for grains per spike (53 and 56), 1000 grain weight (32.67 and 35.50 g) and grain yield (4561 and 5803 kg/ha). The lowest wheat grain yield was obtained where no fertilizer was applied. [ABSTRACT FROM AUTHOR]