Results showed that organic matter, crude protein, mutual-detergent fiber and cellulose contents and in vitro dry matter and organic matter digestibilities were influenced by rice varieties. Increasing levels of nitrogen fertilization tended to increase the crude protein content of rice straw. Neutral-detergent fiber contents were lower and in vitro digestibilities higher in wet-season rice straws. No significant effects on lignin and silica were observed. Among the four rice varieties, IR 36 was better in nutrient quality than any of the 3 other varieties

Three pea (Pisum sativum) varieties were used in this investigation: Petit Provancal, Kelvedon Wonder and Novosadski kasni 915. Seeds were let to germinate 6 days in sand, in a thermoregulator, at 25 deg C. During the following 16 days the plants were grown in water culture in full nutrient solution. The first samples for the analysis were taken the day when they were transferred into nutrient solution and then every four days, up to 22 days. Varieties were found to differ notably by the root system development rate. The root system of Novosadski kasni 915 was the least developed at the end of the investigation. No notable dependence between the degree of root system development and concentrations of investigated elements in the above-ground parts and root was found. During the first 10 days of the investigation variety Kelvedon Wonder adopted N, P, K and Mg the most intensively per unit of root length, followed by variety Novosadski kasni 915, i.e. those were the varieties having the shortest root systems in these periods. It was concluded that pea varieties in particular growth and developmental periods substituted shorter roots with higher adoption intensity per unit of root length in order to satisfy their needs of mineral matters.

Twenty varieties of winged bean (Psophocarpus tetragonolobus L.) were analysed for crude fat, nitrogenous constituents, ash and moisture. The dehulled beans had high amounts of crude protein (38.06-44.44%) and fat (16.00-19.79%) and varietal differences in the major nutrient contents were observed. Among the varieties tested, the Bangladesh varieties Sylhet (44.44%) and SMH-021 (44.0%) contained the highest amount of protein and high amount of fat (18.40-19.20%). The fatty acid composition of the oil of Sylhet variety was analysed. Oleic (36.53%) and linoleic (31.03%) acids were the major unsaturated fatty acids and behenic (11.32%), palmitic (7.89%)and stearic (5.54%) were the major saturated fatty acids. In view of high yield potential and nutritive value, the increased production and consumption of varieties Sylhet, SMH-031, Indonesia and Thailand have been stressed.

The nutritive value of high yielding varieties (HYV) of rice were compared to ordinary yielding varieties (OYV) through nutrient analysis, amino acid content analysis and a metabolic experiment with rats. The protein content per 100g rice was 8.03g and 6.70g for HYV and OYV respectively. Lysine and total amino acid contents of HYV were higher than those of OYV. The body weight gain of rats fed with HYV was 24 % higher than that of OYV. The protein efficiency ratio and liver weight of rats fed with HYV were higher than those of OYV