EFFECT OF PENDIMETHALIN (STOMP) AND BENZYL ADENINE (BA) ON ASSOCIATED WEEDS, GROWTH, YIELD AND CHEMICAL COMPOSITION OF SOYBEAN PLANTS AT NOBARYA

Document Type : Original Article

Author

Botany Dept., National Research Centre, Dokki, Cairo, Egypt.

Abstract

Two field experiments were conducted to study the effect of Pendimethalin [0
,0.9 Land 1.7 Ufed.] and SA [0 , 25 and 50 ppm] on the associated weeds, growth,
yield and its components, in addition to chemical composition of soybean seeds.
All Pendimethalin treatments alone or in combination with SA significantly
depressed the growth of associated weeds. The highest reduction in fresh and dry
weights of total weeds were obtained by Pendimethalin (1.7 Ufed. SA (25 ppm)
        treatment.                                                                                 .
It was found that application of Pendimethalin as well as SA gave significant
improvements in growth parameters, yield and its component of soybean. In addition
recorded increases in total carbohydrate, crude protein, N, P, K, Fe, Mn, Cu and Zn
content in seed of soybean, whereas oil content of the seeds was decreased.
Pendimethalin (1.7 Ufed.) + SA (25 ppm) gave the highest value of growth,
yield and seed content, whereas, control treatment produced the lowest values of
growth and yield.