Rate of Variations Between Field Bean Cultivars Due to Sowing Dates and Foliar Spraying Treatments

Abstract

Background: Shedding phenomena of field bean plant usually took place in serious values especially for buds, flowers and immature pods leading to a great reduction in seed yield. Thus, the main objective of this study was to study the performance of some field bean cultivars under sowing dates and foliar treatments. Methods: Field experiments were carried out during 2011-2012 and 2012-2013 seasons to find out the performance of cultivars (Sakha 1, Sakha 2 and Giza 3 improved) under sowing dates (15th October, 1st November and 15th November) and foliar treatments (without, spraying with water, yeast extract, GA and mixture of yeast extract+GA). Each sowing date was performed 3 3 in a separate experiment. Every experiment was carried out in strip-plot design with four replications. The vertical plots were assigned to cultivars and the horizontal plots were occupied with foliar treatments. Results: Sowing on 1st November gave highest growth parameters, seed yield and its components and protein%. However, sowing on 15th October produced highest shedding% and lowest values of other characters. Sakha 1 cultivar significantly superior Sakha 2 and Giza 3 improved and recorded highest values of all studied characters. Sakha 2 cultivar recorded highest percentages of shedding. Foliar spraying with mixture of yeast extract and GA surpassed other foliar treatments and 3 resulted in highest values of all studied characters, excluding shedding percentage. Conclusion: Sowing Sakha 1 cultivar on 1st November and spraying with mixture of yeast extract+GA reducing shedding percentage and 3 maximizing field bean seed productivity.