EFFECT OF ORGANIC NUTRIENT SOLUTION ON GROWTH AND YIELD OF GREEN BEAN (Phaseolus vulgaris L.)

Abstract

Liquid Organic Fertilizer (LOF) is one of the important methods of supplying supplemental doses of minor and major nutrients, plant hormones, stimulants, and other beneficial substances for not only soil cultivation but also in Hydroponics. The two experiments were conducted to study the effect of organic nutrient solutions on growth and yield of Green Bean (Phaseolus vulgaris L.),variety Sri Lankan capri in field and hydroponic. The field experiment was laid out in a Randomized Complete Block Design (RCBD) with seven treatments and four replicates. The treatments were recommended inorganic fertilizer application (T1), 5t/ha Poultry Manure with 0.5% vermiwash (T2), 1% vermiwash (T3), 1.5% vermiwash (T4), 0.5% vegetable waste solution (T5), 1% vegetable waste solution (T6) and 1.5% vegetable waste solution (T7). Vermiwash and vegetable waste solution were applied at once in two weeks and the performance was recorded at 2nd,4th, 6th, 8th weeks after planting (WAP). The hydroponic experiment was laid out in a Completely Randomized Design (CRD) with seven treatments having twenty replicates. The treatments were recommended inorganic fertilizer application (T1),1/2 doses of Albert's solution with 0.5% vermiwash (T2), 1% vermiwash (T3), 1.5% vermiwash (T4), 0.5% vegetable waste solution (T5), 1% vegetable waste solution (T6), 1.5% vegetable waste solution (T7) was used as media. The field study showed that number of branches and leaves per plant, plant height, number of flowers per plant, dry weight of leaves, stem and roots were significantly (P<0.05) varied at 8th week after planting and it was high in T2. Further, application of LOF significantly influenced (P<0.01) yield at 1st, 2nd and 3rd picking and it was high in T2. Total Yield was achieved in T2 which was 1.37 % higher than T1. This study suggests that application of 5t/ha poultry manure with 0.5% vermiwash (T2) would be more suitable for cultivation of green bean in red podzolic soil. Further, in hydroponics plant height, number of leaves and branches per plant, leaf area, dry weight of leaves and length of pods were significantly (P<0.05) varied at 6th week after planting and it was high in T5. However, number of pods per plant, girth of pods, fresh and dry weight of pods and yield were high inT2 at 3rd picking while yield at 1st and 2nd picking were high in T5. This result suggests that 1/2 doses of Albert's solution with 0.5% vegetable waste solution (T5) and1/2 doses of Albert's solution with 0.5% vermiwash (T2) would be the potential source of plant nutrients for sustainable crop production of bean in Non-circulating Hydroponic system