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Research Article Pages 338-350
Abstract: Studies on diurnal variations of greenhouse gas (GHG) fluxes in rice (Oryza sativa L.) production systems have been limited to flooded, or variations of flooded, soil conditions. This study aimed to quantify hourly CO2, CH4, and N2O fluxes over a period of 20 hours and the effects of site position (up-, mid-, and down-slope) and tillage practice [conventional tillage (CT) and no-tillage (NT)] during the vegetative lag phase in a furrow-irrigated rice field on a silt-loam soil in eastern
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Research Article Pages 331-337
Abstract: Rice cultivation in a continuous flooding system is common practice. However, due to the scarcity of continuous irrigation alternate water management strategies are being explored for rice cultivation. The objective of this study was to evaluate the effects of alternative water management strategies and nitrogen fertilizer on rice yield grown on highly organic (histosol) soils. The treatments included: Continuous flooding (CF); continuous flooding + nitrogen (CF + N)
Research Article Pages 324-330
Abstract: High soil pH limits the availability of pH sensitive nutrients even though abundant levels are present in the soils. Elemental sulfur (S) application to lower soil pH and increase the nutrient availability to the crop is a possible and economically feasible solution. The objective of this study was to evaluate the effect of sulfur application on soil pH, rice water quality, nutrient uptake, and rice yield. An experiment was conducted to test the effect of different rates of sulfur application on rice grown in Everglades Agricultural Area (EAA) soil.
Research Article Pages 317-323
Abstract: ICAR-National Rice Research Institute (NRRI), Cuttack, India had taken up two tiny villages namely Gurujanga & Guali in Odisha state for developing as model villages and dissemination of improved rice production technologies. Adoption of few land mark rice varieties developed by ICAR-NRRI, Cuttack resulted huge yield advantage over varieties grown earlier. Non-farm income and labour force participation rate were key factors together with other improved traits for adoption of varieties and technologies.
Research Article Pages 307-316
Abstract: Safe usages of untreated municipal wastewater (WW) containing both plant nutrients and contaminants can reduce cost and clean the environment. This study investigated rice (Oryza sativa L.) traits and soil health under irrigation with municipal WW in combination with five fertilizer doses in two field experiments. The fertilizer treatments comprised no application of fertilizer (F0, control) and application of 25%, 50%, 75% and 100% of recommended standard fertilizer dose
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