Influence of Foliar Application by Benzyladenine and Yeast Extract on Growth, Root Yield, Quality and Chemical Compositions of Sugar beet (Beta vulgaris L.) Plant

Abstract

Two field experiments were carried out at the Experimental Research Station, Faculty of Agriculture, Moshtohor, Benha University, Qalyoubia Governorate, Egypt, during 2016/2017 and 2017/2018 seasons, to study the effect of foliar application of benzyladenine (BA at 50 and 100ppm) and yeast extract (at 100 and 200 ml/L) in which were applied three times (50, 70 and 90 days after sowing) on growth, root yield characteristics and chemical compositions of sugar beet plant (Beta vulgaris L. cv. Ras-Poly). The obtained results indicated that, the foliar application with different applied treatments of both benzyladenine and yeast extract significantly increased all vegetative growth characteristics of roots (i.e. root length, diameter, fresh and dry weights/ plant) and leaves(i.e. leaves number, total leaves area/ plant and fresh and dry weights/ plant) at 110 days after sowing).The results also indicated that the foliar application of these treatments significantly increased root yield characteristics and quality at harvest time compared with control plants in both seasons. Data also showed that, foliar spraying of BA at 100ppm and yeast extract at 200 ml/L increased photosynthetic pigments, minerals contents, total carbohydrates and crude protein content in sugar beet leaves at 110 days after sowing. Results also gave the highest values of all studied vegetative growth and root yield characteristics as well as root quality in this study. Hence, it could be concluded that foliar application of benzyladenine (BA) at 100 ppm and yeast extract at 200 ml/L have promoting effect on growth, root yield and quality of sugar beet plants.

Sugar Beet Growth, Yield, and Quality in Relation to Nitrogen Levels and Yeast Addition Times

“…This effect of the yeast foliar spray may be attributable to yeast's role as a natural supply of cytokinin, which promotes cell division and growth as well as the synthesis of protein, nucleic acid, and chlorophyll (Mohamed, 2012), consequently cumulative plant development dry matter accretion, in addition sugar root quality and sugar-beet productivity. These results corresponded in proportion to those published by Abdou (2015), Thalooth et al (2019), Eid (2020), and Sarhan et al (2020.…”

“…According to Thalooth et al (2019), foliar yeast use has a stimulating influence on root creatures (length and diameter), fresh top, root, and total weight of top and roots, yield of top, root, and total weight of top and roots, as well as root quality metrics. According to Rania, Eid (2020), the use of yeast in foliar applications considerably improved all root vegetative development traits. When compared to control plants, foliar treatment of yeast considerably improved the characteristics and quality of the root produce.…”