Effect of irrigation scheduling and integrated nutrient management on yield of rice-wheat system and properties of a reclaimed sodic soil
2009
Singh, R. | Singh, Y.P. | Yaduvanshi, N.P.S. | Sharma, D.K.
A field experiment was conducted at the Central Soil Salinity Research Institute Regional Research Station, Lucknow during 1999-2002. Effect of injgation scheduling and integrated use of organic manure and inorganic fertilizers for maximizing yields of rice-wheat cropping system in the gYPsull,l~aI1)ended sodic soils was studied. Grain yield of rice was significantly higher under continuous submergence over the irrigation at 4 days after disappearance of pounded water (DADPW). However, the grain yield with 2 - DADPW was at par with continuous submergence. The growth and yield of rice were significantly higher under 100% NPK + green manure dhaincha (Sesbaniaaculeata) followed by 100% NPK + 10 t sulphitation pressmud cake (SPMC) ha-I in comparison to other treatments under continuous submergence and 2-DADPW. Irrigation amounting to 57.5 em at 2 -DADPW saved 24% of water over the continuous submergence without reducing the grain yield. Growth and yield of wheat were significantly higher with the application of 100% NPK with residua effect of green manure (T~) followed by SPMC in comparison to other treatments. Wheat yield was higher with 4 irrigations applied at critical root initiation (CRI), tillering (T), jointing (J) and milking (M) stages as compared to 3 irrigations at CRI, T and M stages. Integrated use of inorganic fertilizers and organic manures reduced soil pH from initial 10.2 to 9.0 in 0 -15 cm soil layer. Organic carbon content (2.6 g kg-I) and infiltration rate of (1.5 mm h-I ) were higher incase of 100% NPK + green manuring.
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Эту запись предоставил Indian Council of Agricultural Research