Effect of bio-stimulants foliar applications on growth, yield, and product quality of two Cassava cultivars

Abstract

The results showed that American cassava cultivar recorded the highest vegetative growth characters (plant height, leaves number, main stems, lateral branches, leaf area, and chlorophyll content), tuber yield (number and weight), and tuber quality (length, diameter, dry matter, and tubers-shoots ratio) as well as chemical composition (starch, total carbohydrates, N, P, and K). The foliar application of glutamine at the rate of 200 mg/L increased vegetative growth characters and tuber yield as well as tuber quality and improved chemical contents of cassava tubers. On the contrary, the lowest values of cassava growth and its productivity as well as chemical composition were associated to Brazilian cultivar when foliar sprayed by yeast at the concentration of 2 g/L.