Effect of potassium application and follar spraying of boron at different stages on faba bean production

Abstract

AbstractA field experiment was conducted at the Experimental Farm, Department of Field Crops, College of Agriculture, University of Baghdad/Abu-Ghraib during winter season of 2013-2014. The main objective was to find out the effect of potassium levels (0, 41.5 and 83) kg K.ha-1 and foliar application of boron (100 mg.L-1) at different flowering stages (flower buds emergence, 25%, 50% and 75% flowering) in addition to control treatment (water spray only) on faba bean Spanish cultiver. Luz de Otono on setting and pod yield, layout of the experiment was a factorial experiment in randomized complete block design with four replications.Results showed that there was significant effect of potassium levels and the application of potassium at 83 kg K.ha-1 was superior in No. of racemes.plant-1 (124.7), No. of flowers.plant-1 (357.4), fertility percentage (6.6%), No. of pods per plant (24.3 pod. Plant-1), and green pods yield of plant (117.5 gm.plant-1).Foliar application of boron at flower buds emergence, flowering 25%, 50% and 75% of plants was superior in in giving least days to 100% flowering (102 day), and highest means for No. of racemes per plant (126.8), No. of flowers per plant (357.5), fertility percentage (6.3%), No. of pods per plant (23.2 pod.plant-1) and green pods yield of plant (118.4 gm. plant-1)Key words: faba bean , potassium, boron.