EFFECT OF SULFUR AND DAP FERTILIZER ON GRAIN YIELD AND ITS COMPONENTS OF SORGHUM

Abstract

Abstract: A field experiment was conducted in the research field of Crop Science Dept. in the Agriculture College in the Univ. of Baghdad, during the spring season of 2007.The objective of this study was to study the response of sorghum to application of different rates of agriculture sulfur and DAP fertilizer.The experiment included four levels of agriculture sulfur ( 0 , 1000 , 2000 and 3000 kg S .h-1) and four levels of Diammonium phosphate ( 0 , 22 , 44 and 66 kg P. h-1 ) . Treatments (4×4) was distributed in Completely Randomized Block Design (RCBD) with three replicates, the following traits have been studied; number of seed per head, 1000 seed weight, grain yield and protein percent, and the results as follow: The agriculture sulfur had significant affects on all the studied traits, the treatment(3000 kg.h-1)sulfur gave the highest values for all traits in this study.( 2344 grains, 26.6 gm, 8.32 ton.h-1 and 11.57% ) respectively. DAP fertilizer had significant affects on all the studied traits, the treatment (66 kg P.h-1) gave the highest value for all traits (2259 grains, 26.6 gm and 8.07 ton.h-1) respectively. The treatment( 22 kg P.h-1 )has the highest value for protein percent (10.57%) which has no significant difference with the treatment(44 kg P . h-1) . S×P level interactions had significant effect,whereas 3000 kg S.h-1 × 66 kg P. h-1 gave highest grain no. of 2433 grains.2000 kg S.h-1 × 66 kg P. h-1 had highest 1000 grain weight and grain yield 0f 27.5 gm and 8.71 ton.h-1, respectively . Protein percent was highest of 11.69 % under 3000 kg S. h-1 × 22 kg P.h-1 interaction .