Abstract
Fertilizer, particularly phosphatic is a costly input which requires appropriate management to acquire economic and sustainable crop yield. A field experiment was conducted to explore the role of different phosphorus sources and methods of application on growth and yield of wheat crop at Multan, Pakistan during winter 2007-08. The experiment was conducted using randomized complete block design with split plot arrangements with three replications. Wheat variety, Inqlab-91 was used in the experimental trial. The experiment was comprised of two fertilizer sources (DAP & NP) and four application methods: Control (M0), Broad cast (M1), Side dressing at planting (M2), broadcast at planting + at 1st irrigation (M3) and Broadcast at 1st irrigation (M4). The application of phosphorus with side dressing at planting increased fertile tillers, spikelets per spike, 1000-grain weight and recorded significantly higher wheat grain yield (5.68 t ha1 ) as compared to other methods of application. Among sources, DAP recorded significantly higher wheat grain yield than when NP was used as phosphorus source.

Hakoomat Ali, Naeem Sarwar, Shakeel Ahmad, Ahmad Waqas Tariq, Ahmad Naeem Shahzad. (2012) Response of wheat crop to phosphorus fertilizers and application methods grown under agro-climatic conditions of Southern Punjab, , Volume-49, Issue-4.
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