STUDIES ONSEED PELLETING WITH RHIZOBIUM AND NUTRITION MANAGEMENT ON YIELD AND QUALITY OF COWPEA (Vigna unguiculata L.)
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Date
2016
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Abstract
ABSTRACT The present investigation entitled “Studies on Seed Pelleting with Rhizobium and Nutrition Management on Yield and Quality of Cowpea (Vigna unguiculata L.)” were carried out in two experiments at the laboratory and experimental farm of Department of Seed Science & Technology, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.) during 2014-2015. The first experiment was laid out in laboratory of department. During the storage of cowpea seeds in laboratory conditions, Rhizobium culture pelleting in cowpea seeds gave better results w.r.t. germination % (93.55 %), seedling length (29.76 cm), seedling dry weight (74.59 mg), Seed vigour index-I (2786.66) and seed vigour index-II (6981.37) in fresh pelleted seeds (0 month). The second experiment was laid out in a Randomized Block Design (Factorial) with different pelleting material i.e. Rhizobium liquid, Rhizobium powder and Rhizobium liquid with jaggary and 5 levels of nitrogen i.e. F1 (0% N of RDF), F2 (40% N of RDF), F3 (60% N of RDF), F4 (80% N of RDF) and F5 (100% N of RDF), altogether 20 treatment combinations of seed pelleting and nitrogen replicated thrice. Among different types of pelleting, T2 (Rhizobium liquid pelleting) gave better results w.r.t. emergence (93.00 %), plant height (90.18 cm), number of branches per plant (4.44), number of seeds per pod (12.90), number of pods per plant (14.05), number of seeds per plant (181.24), number of seeds per plot (6747.02), seed yield per plant (22.49 g), seed yield per plot (837.33 g), 1000 seed weight (124.09 g), seed yield per ha (24.79 q), germination (95.90 %), speed of germination(58.66), seedling dry weight (76.61 mg), seed vigour index-I (2774.08) and seed vigour index-II (7346.90). As regards the effect of application of nitrogen, application of 80 % N of RDF gave better results w.r.t. emergence (92.50 %), plant height (88.11 cm), no of branches per plant (4.41), number of seeds per pod (12.87), number of pods per plant (13.72), number of seeds per plant (176.58), number of seeds per plot (6538.65), seed yield per plant (21.86 g), seed yield per plot (809.47 g), seed yield per ha (23.96 q), germination percentage (94.75 %), speed of germination(58.97), seedling length (29.92 cm), seedling dry weight (71.98 mg), seed vigour index-I (2835.38) and seed vigour index-II (6823.56) which was at par with 100% N of RDF. However, it can be concluded that seeds pelleted with Rhizobium liquid formulation (1 × 108 cfu/g of pellet) + clay + adhesive (45% Gum arabica) combined with 80% N of RDF gave better plant growth, seed yield and quality of cowpea seeds in field condition and better storage of seeds in laboratory.
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sowing, seed treatment, rhizobium, planting, yields, cowpeas, germinability, nitrogen, developmental stages, biological phenomena, Cowpea (Vigna unguiculata L.,Seed Pelleting with Rhizobium