Nutrient analysis and sensory qualities of black, red, and white rice (Oryza sativa L.) cultivars grown under different nutrient management in strongly alkaline soil

Appropriate nutrient management could influence the eating and grain qualities, and physicochemical properties of rice cultivars. The study aims to determine the grain yield and yield components, and nutrient content of black, red, and white rice cultivars as influenced by nutrient management under strongly alkaline soil. Evaluating the sensory qualities of different rice cultivars as influenced by nutrient management under strongly alkaline soil, and determines the suitable rice cultivar for optimum grain productivity. The study was laid out in a split-plot arranged in a Randomized Complete Block Design (RCBD) with rice cultivars as the main plot and nutrient management as the subplot. Statistical analysis revealed that black rice gave relatively higher crude fat and ash content with the same amount of nitrogen to red rice, however much lower to nitrogen, sugar, and starch content than white rice under strongly alkaline conditions. Application of pure poultry litter, inorganic fertilizer, or a combination of both does not enhance crude fat and starch content of all rice cultivar except the unfertilized plants (T1). Application of pure inorganic (T2) and combined application (T4) increased N and sugar than unfertilized control (T1). Texture and general acceptability were significantly affected by rice cultivars tested where red and black rice are comparably perceived as "like very much" than white rice, which is perceived to be "like slightly." No significant differences in other physical attributes such as color, aroma, and taste. All physical characteristics of sensory analysis were not influenced by nutrient management applied.