Irrigation and n_fertilizer requirements for maximum yield potential of wheat

• Published in: Journal of Research, Punjab Agricultural University Vol. 37; no. 1
• Main Authors: Narang, R.S, Gill, M.S, Gosal, K.S, Mahal, S.S. (Punjab Agricultural University, Ludhiana(India). Department of Agronomy)
• Format: Journal Article
• Language: English
• Published: 01.03.2000
• Subjects: ABONOS NITROGENADOS; CROP YIELD; ENGRAIS AZOTE; IRRIGATION; NITROGEN FERTILIZERS; RENDEMENT DES CULTURES; RENDIMIENTO DE CULTIVOS; RIEGO; TRITICUM AESTIVUM; USO DEL AGUA; UTILISATION DE L'EAU; WATER USE
• ISSN: 0048-6019

A field experiment was conducted during 1992-93 through 1994-95 at Punjab Agricultural University, Ludhiana to study the response of aestivum and durum wheat for exploring maximum potential level of N-fertilizer and irrigation regimes. The experiment comprised of 3 cultivars(PBW 222,HD-2329 and PDW 215-durum), 3 3 irrigation regimes (40, 50 and 60 per cent depletion) of available soil moisture (ASM) from 0-150 cm soil depth and 4 levels of nitrogen (120, 150, 180 and 210 kg/ha) tested in a split plot design. The results revealed that for high yield realization, all cultivars require 25-50 per cent more nitrogen than the already recommended level (120 kg N/ha). The crop did respond significantly to irrigation regime of 40 per cent depletion of ASM than the 50 and 60 per cent depletion regime. The aestivum wheat gave significantly more yield than the durum wheat during all the years. The interaction effects were also found significant and the maximum yield (6.1 t/ha) was obtained with 40 per cent depletion of ASM irrigation regime alongwith 180 kg N/ha. Likewise, the highest water use was observed under 40 per cent depletion of ASM with reasonably high water use efficiency levels varied from 110.9 to 117.7 kg/ha/cm.