GROWTH, GREEN PODS YIELD AND SEEDS YIELD OF COMMOM BEAN (Phaseolus vulgaris L.) AS AFFECTED BY ACTIVE DRY YEAST, SALICYLIC ACID AND THEIR INTERACTION.

Document Type : Original Article

Author

Vegetable Res. Dept., Hort. Res. Inst., Agric. Res Center. Egypt.

Abstract

Foliar spray of yeast at 0, 1 and 2 gIL levels and salicylic acid (SA) at 0, 50,
100 and 150 ppm were applied to common bean plants c.v Bronco. Obtained results
revealed that using 2 gIL of yeast was most effective treatment in plant height,
number of leaves, leaf area, fresh and dry weighVplant as well as total chlorophyll
content of leaves. and green pods yield and its components except the pod weight.
seed yield and its components and weight of 100 seed. However, SA as antioxidant
substance retarded the vegetative growth specially when used at the highest used
concentrations i.e. 100 and 150 ppm. Obtained results showed that, (SA) at 50 ppm
had the best effect on growth, chlorophyll content, and green pods yield and its
components except weight of pod, seed yield and its components as well as weight of
100 dry seed. Applying yeast at 2 gIL combining with SA at 50 ppm promoted plant
growth, chlorophyll content, and green pods yield and its components except green
pod weight, seed yield and its components and weight of 100 dry seed. On the other
hand, it was observed that spraying yeast at 2 gIL or salicylic acid at 50 ppm each
alone or interacting together had no effect on seed germination percentage and
germination rate of dry seeds.