Effect of irrigation schedules and nutrient management on WUE and nutrient uptake of wheat on Vertisol

Ingle, A.U.; Shelke, D.K.; Aghav, V.D.; Karad, M.L.

Journal of Soils and Crops 17(1): 188-190


Accession: 013362758

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A field experiment was conducted at the Department of Agronomy, Marathwada Agricultural University, Parbhani, Maharashtra, India, during rabi season of 2004-05 to study the effect of irrigation and integrated nutrient management on water use efficiency and nutrient uptake of wheat. Nine treatment combinations with three irrigation schedules and three nutrient supply combinations were employed. Irrigation treatments comprised of application of irrigation at five growth stages. (I1 - CR1, tillering, jointing, flowering and grain development), four growth stages (I2 - CR1, tillering, flowering and grain development) and three growth stages (I3 - CRI, jointing and grain development). Nutrient supply treatments comprised of application of only organic manure ((F1) 5 t FYM (farmyard manure)/ha); only recommended dose of fertilizer (RDF) ((F2) 100:50:50 kg NPK/ha); and (F3) 50% RDF (50:25:25 kg NPK/ha) + 50% organic manure (2.5 t FYM/ha). The samples at harvest were used for chemical estimation of N, P and K content in wheat. Water supply to wheat crop increased the total consumptive use (CU) with increase in number of irrigations. The highest CU was recorded in frequently irrigated treatment, i.e., five irrigations followed by four and three irrigations. The CU was found to be higher in 100% RDF and the lowest CU was recorded in only FYM treatment. Nutrient uptake from five irrigations gave higher values of N, P and K over four and three irrigations. With respect to nutrient uptake, higher dose of fertilizer (i.e., 100% RDF) recorded the maximum. The lowest nutrient uptake was recorded by FYM at 5 t/ha.