Abdou, S. M. M.; H. M. Abd El - Wareth and A. I. Aly( 2018). Influence of Sowing Dates and Irrigation Scheduling on Some Water Relations, Snap Bean (Phaseolus Vulgaris L.) Productivity and Aphid (Acyrthosiphon Pisum Harris ) PopulationsEgypt. J. of Appl. Sci., 33 (9) 2018 256-277
Abstract: Snap bean (Phaseolus vulgaris L.) is one of the most important exporting vegetable crops in Egypt. Concerning to that, two field experiments were conducted at El-Mokrani village, Youssef Al - Siddiq District, El-Fayoum Governorate, Egypt during 2014 and 2015 Nili seasons in split plot design. This study aims to investigate the effect of three sowing dates (1st, 16th of August and 1st of September); irrigation scheduling regime by using Cumulative Pan Evaporation C.P.E. from Class A Pan evaporation (1.0, 0.8 and 0.6 C.P.E.) on some water relations, growth parameters, fresh pods yield of snap bean (Phaseolus vulgaris L.) and its components, the population fluctuations of pisum aphid, Acyrthosiphon pisum Harris and farm net income. Results showed that the combination of third sowing date and irrigation at 0.8 C.P.E. (approximately 18-21 days irrigation interval) gave the highest averages of water use efficiency (WUE) and fresh pods yield (10.2 and 10.5 Mg ha-1 in 2014 and 2015 seasons, respectively), a low density of A. pisum comparing with other combinations as well as it achieved the greatest net farm income (28653 L.E. ha-1).
Keywords: (snap bean, sowing date , irrigation scheduling, water use efficiency , Acyrthosiphon pisum .)
