PJB-2011-109
PHYSIOCHEMICAL TRAITS, PRODUCTIVITY AND NET RETURN OF WHEAT AS AFFECTED BY PHOSPHORUS AND ZINC REQUIREMENTS UNDER ARID CLIMATES
NAZIM HUSSAIN1*, MUHAMMAD BISMILLAH KHAN1, RIAZ AHMAD2, MUHAMMAD ARIF ALI1, NIAZ AHMED1 AND SHAFQAT SAEED3
Abstract
The present study was aimed to optimize phosphorous and zinc doses to maximize wheat productivity under arid climate. Varying levels of phosphorus (P1= 60, P2 = 90 and P3 = 120 kg ha-1) and zinc (Zn1 = 10, Zn2 = 15 and Zn3 = 20 (kg ha-1) were applied in a silty loam to which wheat was grown till maturity. From the results of the present study, it was found that application of P had a positive influence on growth and grain yield of wheat. However, maximum growth and yield of wheat was recorded at 120 kg ha-1 P2O5 application. In contrast, Zn application did not change in growth or yield of wheat. However, combined application of P and Zn caused an increase in growth of wheat particularly in terms of Leaf Area Index (LAI). The highest grain-P content was recorded with application of 120 kg ha-1 P2O5 and 15 kg ha-1 Zn while highest straw-P was accumulated with comparatively lower rates of both (90 kg ha-1 P2O5 and 15 kg ha-1 Zn). The highest grain and straw-Zn contents were recorded for 15 kg Zn ha-1 with 60 and 90 kg ha-1 P2O5, respectively. Combined application of 120 kg P2O5 and 20 kg ha-1 Zn depicted the highest NFB and BCR during both cropping seasons.
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