Influence of Top Dressing of Phosporus Through Complex Fertlizers on Nutrient Uptake and Economics of Rice.
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Date
2013-10
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Abstract
A field experiment was conducted to study the effect of top dressing of phosphorus through complex
fertilizers on rice during kharif 2009 on clayey soil at Agricultural college farm Bapatla. Phosphorus uptake was
significantly influenced due to sources of P at different times of application. Significantly higher P uptake in grain
and straw was recorded with application of P as basal and at maximum tillering stages either through DAP or by
20:20:0 which was on a par with three splits of DAP and 20:20:0 and basal application of DAP, SSP and 20:20:0.
The available P in soil was found significant among the treatments at 30 DAT, whereas, at 60 and 90 DAT and at
maturity, it was non significant. The available nitrogen and potassium in soil after the harvest of rice crop was found
non significant. Gross and net returns and benefit cost ratio were higher with application of P through DAP in two
equal splits at basal and maximum tillering stages followed by 20:20:0; whereas, BCR was the highest with DAP in
three splits.
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Keywords
Top dressing, Phosphorus, Nutrient uptake, Economics
Citation
Srujana M, Mosha K, Rao V Prasada. Influence of Top Dressing of Phosporus Through Complex Fertlizers on Nutrient Uptake and Economics of Rice. International Journal of Applied Biology and Pharmaceutical Technology. 2013 Oct-Dec; 4(4): 281-285.