Influence of phosphorus application and sowing time on performance of wheat in calcareous soils
2008
Hussain, N. (Bahauddin Zakariya Univ., Multan (Pakistan). Univ. Coll. of Agriculture) | Khan, M.B. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy) | Ahmad, R. (University of Agriculture, Faisalabad (Pakistan). Dept. of Agronomy)
An experiment on the agronomic response of wheat (Triticum aestivum L.) sown at different dates to phosphorus application in calcareous soil for increase in yield was conducted under and climates during 2005-06 and 2006-07. The crop was sown in calcareous silty loam soil on 25th day of October, November and December, and phosphorus levels were 60, 90 and 120 kg per ha. The data on various agronomic characteristics were recorded following standard procedures. There was a consistent decrease in grain yield with delay in sowing from October 25 to December 25. There was a progressive increase in grain yield of wheat with each increment from 60 to 120 kg P per ha from the crop fertilized being maximum from 120 kg P per ha. The crop duration of the wheat sown on December 25 and fertilized at 120 kg P per ha was 42 days shorter as compared to that sown on October 25 and fertilized with 60 kg P per ha. Various crop traits such as number of fertile tillers, 1000-grain weight and number of grains per spike were significantly influenced by sowing dates and phosphorus application. Similarly, fertilization with at 120 kg P per ha maximally improved all these traits in both the years. As a result of interactive effect of early sowing time (October 25) and the highest dose of phosphorus, (120 kg per ha) gave maximum yield.
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