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Effect of wheat residue incorporation along with n starter dose on rice yield and soil health under saline sodic soil.

2012; ELEWA BIOSCIENCES, F.a.C.T.LTD; Volume: 22; Issue: 3 Linguagem: Inglês

2309-8694

Muhammad Arshadullah, Amjad Ali, Syed Ishtiaq Hyder, Arshad Mahmood Khan,

Rice Cultivation and Yield Improvement

A field experiment was conducted to determine the effect of crop residue incorporation @ 5 tons wheat straw ha -1 along with N starter dose (0, 30kg N ha -1 , 60kg N ha -1 and 90kg N ha -1 ) on rice (supper basmati) production and soil health at Soil Salinity Research Institute( SSRI) Farm, Pindi Bhattian, district Hafizabad under saline sodic soils (ECe=5.32 dS m - -1 (140.33) , spike length (24.66 cm), number of tillers/ plant (40.33) and 1000-grain weight (23 g) were recorded at the application of 5 tons wheat straw ha -1 along with 90 kg N ha -1. Grain yield was the maximum (3.32 t ha -1 ) at the application of 5 tons wheat straw ha -1 along with 90 kg N ha -1 and 26% more than control treatment. Positive correlations (r= 0.85) and (r=0.96) between calcium and Potassium contents in grain and grain yield of rice. However, negative correlation (-0.92) between Na contents in grain and paddy yield was found. It indicated presence of significantly higher Ca and K contents in grain receiving wheat straw application combined with N starter dose. Its application helped plants to attain more Ca and K to avoid sodium uptake which has been an added advantage to alleviate salinity/sodicity. Economical analysis showed maximum value cost ratio (5.45:1) with the application of 5 tons wheat straw ha -1 along with 90 kg N ha -1 .