Yield and phosphorus transformations in a rice-wheat system with crop residue and phosphorus management

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dc.creatorGupta, R.K.
dc.creatorYadvinder-Singh
dc.creatorLadha, J.K.
dc.creatorBijay-Singh
dc.creatorSingh, Jagmohan
dc.creatorSingh, Gurpreet
dc.creatorPathak, H.
dc.date2007-09
dc.date2024-12-19T12:56:14Z
dc.date2024-12-19T12:56:14Z
dc.date.accessioned2026-06-27T04:08:52Z
dc.descriptionPhosphorous deficiency limits productivity of rice (Oryza sativa L.)–wheat (Triticum aestivum L.) systems in the Indo‐Gangetic Plains. Deterioration of soil and air quality due to straw burning is also a concern. Field experiments were conducted to determine the effects of straw and P management strategies on yield, P balance, and P transformations in soil in a rice–wheat system. Four treatments composed of different combinations of rice and wheat straw removal, burning, and incorporation were the main plots. Subplot treatments were P fertilization to wheat or to both rice and wheat and a no‐P control. Wheat yield was similar where straw was burned in situ or removed. Incorporation of straw increased the wheat yield in Year 4. Significant straw × P management interactions, observed after 4 yr, suggested that residues can enhance yield under limited P supply situations. Application of 26 kg P ha−1 to wheat increased grain yield by 6 to 15% compared with no P. Rice yield did not respond to incorporation of residues or P fertilization. The P balance was negative with removal or burning of rice straw, but when both wheat and rice straw were incorporated, the balance was positive at the recommended P level (26 kg P ha−1 to wheat only). Changes in total soil P suggested that the two crops remove significant P from below 15 cm. Incorporation of residues increased soil Olsen, inorganic, and organic P; reduced P sorption; and increased P release. Data show that continuous incorporation of residues substituted for 13 kg inorganic P ha−1 yr−1 and improved system yield.
dc.identifierhttps://hdl.handle.net/10568/166421
dc.identifier.urihttp://hdl.handle.net/123456789/23080
dc.languageen
dc.publisherWiley
dc.sourceGupta, R.K.; Yadvinder-Singh; Ladha, J.K.; Bijay-Singh; Singh, Jagmohan; Singh, Gurpreet and Pathak, H. 2007. Yield and phosphorus transformations in a rice-wheat system with crop residue and phosphorus management. Soil Science Soc of Amer J, Volume 71 no. 5 p. 1500-1507
dc.subjectcrop residues
dc.subjectnutrient balance
dc.subjectnutrient deficiencies
dc.subjectorganic amendments
dc.subjectphosphorus
dc.subjectphosphorus fertilizers
dc.subjectrice straw
dc.subjectrice wheat systems
dc.subjectsoil fertility
dc.subjectyields
dc.subjectpunjab (india) india
dc.titleYield and phosphorus transformations in a rice-wheat system with crop residue and phosphorus management
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)