Farmers’ perceptions of climate change and its implication on livestock production in mixed-farming system areas of Bale highlands, Southeast Ethiopia; Challenges and extents of Soil and Water Conservation measures in Guba-Lafto Woreda of North Wollo, Ethiopia; Evaluation of milk production performance of lactating Fogera cows fed with urea and effective micro-organisms treated rice straw as basal diet.

E3 Journal of Agricultural Research and Development

E3 Journal of Agricultural Research and Development Vol. 3 (4) pp. 064-070, June 2013; © E3 Journals; ISSN 2276-9897


Studies on the nutritional requirements of candidate rice genotype Bas-15-1

Parvez Khan 1 , Muhammad Imtiaz 1
1 Soil Science Division, Nuclear Institute for Food and Agriculture Tarnab, Peshawar, Khyber Pakhtunkhwa

Accepted 25 June 2013

Abstract

A field study was conducted at experimental farm of Nuclear Institute of Agriculture (NIA),Tando Jam to evaluate the nutritional requirements of candidate rice genotype Bas-15-1 evolved at Nuclear Institute of Agriculture (NIA), Tando Jam. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications during kharif 2010. Four levels of N (0, 60, 90 and 120 kg ha-1), eight levels of P2O5 (0, 15, 23, 30, 40, 45, 60 and 90 kg ha-1) along with 25 kg K2O ha-1 in ten combinations were employed in (4:1, 4:2 and 4:3 N: P ratios). Yield and yield components i.e., grains per panicle, 100-grain weight, productive tillers per plant, value cost ratio (VCR). The results indicated that N and P recoveries significantly enhanced with successive increment of N and P up to 90 kg and 60 kg ha-1 respectively. Maximum paddy yield (3.99 tons ha-1) was obtained at 90 kg and 60 kg ha-1, further increasing of N & P could not benefit the paddy yield. Application of 90 kg N and 60 kg P2O5 ha-1 also produced higher number of grains per panicle (165) along with maximum 100-grain weight (2.38 g), productive tillers per plant (20.1), value cost ratio (5.34) and N recovery (102.2%), while the plant height (128 cm) and N and P uptake (107.3, 14.10 kg ha-1) were maximum at 120 kg N + 90 kg P2O5 ha-1 Therefore, recommending higher rate (120 kg N + 90 kg P2O5 ha-1) is neither judicious nor economical while the application of N in a concentrations of90 kg ha-1 and P in a concentration of 60 kg P2O5 ha-1 are the most economical amounts under the same indigenous conditions.

Keywords: Oryza sativa L, agronomic characters, nitrogen, phosphorous fertilizers, uptake, recovery.

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