Published in Scientific Papers. Series A. Agronomy, Vol. LXIII, Issue 1
Written by Radost PETROVA, Alexander MATEV
The aim of this work is to establish the influence of water deficit during different vegetative stages on the yield of green beans grown at late field production. The field experiment was conducted during 2010-2012 in Agricultural University of Plovdiv. Treatments are as follows: 1) without irrigation; 2) optimum irrigation (by 80% FC for 0-40 cm soil layer); 3) without irrigation during vegetative period; 4) during budding and flowering period; 5) during the pod development period. The number of irrigations is 2-4 with amount of irrigation rate 50 mm. The yield by optimum irrigation treatment is 1609 kg/da. It is triple and more than non-irrigated (519 kg/da). The Yield losses caused of irrigation cancelling during vegetative period are 13%. More sensitive is the period of pod development with 11-33% losses. The most sensitive is budding and flowering period with average yield losses of 36% (17-58%).
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