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
DOI:
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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