25 research outputs found
EFFECT OF FERTILIZERS ON THE YIELD, PROTEIN CONTENT AND AMINO ACID COMPOSITION OF WINTER CEREALS
The effect of different fertilizers (nitrogen, phosphorus, potassium) and their combinations
on the yield, raw protein content and amino acid composition were studied in field
experiments. The levels of treatment were 200 kg/ha for nitrogen, 500-1000 kg/ha for
phosphorus and potassium. Winter rye, triticale and wheat cultivar were grown in two
subsequent years.
Nitrogen fertilization in all cases increased the yield of grains and the raw protein
content. The increase reached about 50% in average comparing with control samples grown
without adding nitrogen fertilizers. Although there are significant differences between the
different cereals studied, it can be generally stated that the increase in protein content is
connected with a decrease in the essential to non-essential amino acid ratio. The decrease
is higher if only nitrogen fertilizer is used and moderate if a combined treatment with
nitrogen, phosphorus and potassium fertilizer is applied
EFFECT OF CONCENTRATIONS AND TYPE OF SALT SOLUTIONS ON THE EXTRACTION OF NITROGENOUS COMPOUNDS FROM PHASEOLUS VULGARIS SEEDS
Effect of different salts, with varying concentrations on the extractability of nitrogenous compounds from three cultivars of Phaseolus vulgaris showed that maximum nitrogen extractability attained by the salts can be arranged on a decreasing order as follows: sodium carbonate, disodium phosphate, sodium citrate, magnesium chloride and sodium sulphate.
The amount of nitrogen extracted can be arranged on decreasing order for each
variety as follows: Swissblan, Contender and Giza and this agrees with the amount of
total nitroten resp. protein in each variety and found to be 25.1%, 23.8% and 21.45%,
respectively (NX 6.25 basis)