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Effect of Irrigation and Mechanical Weeding on Rice Under Sri (Paperback)
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Effect of Irrigation and Mechanical Weeding on Rice Under Sri (Paperback)
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The present experiment conducted during kharif season of 2008 and
2010 at AICRP on Water Management field, R.A.U, Pusa, Samastipur,
(Bihar) with the rice variety Proagro (Arize) 6444 (hybrid) to find
out the effect of irrigation and mechanical weeding on growth,
yield and quality of rice under system of rice intensification.
Irrigating with submergence to 2.5 cm 3 days after disappearance of
ponded water and rotary weeding at 20, 30 and 40 DAT were found to
be most congenial for the rice crop grown under system of rice
intensification. 1.Water use efficiency and water productivity were
optimum with irrigation level of submergence to 2.5 cm 3 days after
disappearance of ponded water and rotary weeding at 20, 30 and 40
DAT. 2.Weed population and weed dry weight were increased with
decrease in number of irrigation and mechanical weeding and were
found minimum with irrigation level of continuous submergence and
four rotary weeding at 10, 20, 30 and 40 DAT. 3.N, P and K uptake
were increased with increase in number of irrigation and mechanical
weeding which were found to be maximum with irrigation level
continuous submergence to 2.5 cm and rotary weeding at 10, 20, 30
and 40 DAT.
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