EFFECT OF SEED TREATMENT WITH BOTANICALS ON SEED QUALITY AND STORABILITY OF GREEN GRAM

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Date
2024-05-16
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ACHARYA N G RANGA AGRICULTURAL UNIVERSITY
Abstract
The present experiment was carried out to understand the effect of dry-dressing with botanicals, recommended fungicide and storage containers on storability of seed of two green gram varieties, IPM 2-14 and LGG 460. The seed was treated with neem leaf powder @ 10 g kg-1 (T1), turmeric rhizome powder @ 10 g kg-1 (T2), moringa leaf powder @ 5 g kg-1 (T3), fenugreek seed powder @ 4 g kg-1 (T4) and Carbendazim @ 2 g kg-1 (T5 – Treated control). The treated seed, along with untreated control (T6) seed, stored in cloth bag (C1), gunny bag (C2), polythene (700 gauge) bag (C3) for a period of six months during 2021-22 under ambient conditions of Bapatla, Andhra Pradesh were evaluated for seed quality parameters and biochemical composition of seed at monthly and bi-monthly intervals, respectively. The data were analyzed statistically by adopting Factorial Completely Randomised Design (FCRD) with four replications. The results of analysis of variance indicated that the influence of seed treatments, storage containers and their interaction on storability and seed quality was significantly different at different periods of storage. Significant impact of seed treatments was noticed on moisture content and electrical conductivity of seed leachates from first month in both the genotypes, germination and seedling vigour index-I from first month in LGG 460 and from second month in IPM 2-14, protein content and phenol content from second month, seedling length from third month and total soluble sugars from fourth month of storage in both the genotypes. Storage containers had significant influence on moisture content and electrical conductivity of seed leachates from first month, phenol content from second month, germination and total soluble sugars from fourth month and seedling vigour index-I from fifth month of storage in both the genotypes. The significant effect of interaction of seed treatments and storage containers was observed on electrical conductivity of seed leachates from first month, moisture content from third month in both the genotypes, germination from fourth month in IPM 2-14 and fifth month in LGG 460 and seedling vigour index-I from fourth month in IPM 2-14 and sixth month in LGG 460. The results revealed that with the advancement of storage period, there was a progressive decline in germination, seedling length, seedling vigour index-I and protein xv content along with an increase in moisture content, electrical conductivity of seed leachates, total soluble sugars and phenol content in both the genotypes irrespective of seed treatments, storage containers and their interaction. Among the seed treatments, neem leaf powder treated seed performed better by recording higher mean germination, seedling length, seedling vigour index-I and low moisture content, electrical conductivity of seed leachates, total soluble sugars and phenol content in both the genotypes throughout the storage, while seed treated with moringa leaf powder recorded high protein content in both the genotypes at the end of storage. Polythene (700 gauge) bag was found to be the best packaging material for storing green gram seed as evidenced by recording more mean germination, seedling length, seedling vigour index-I and protein content along with minimum fluctuations in mean moisture content, electrical conductivity of seed leachates, total soluble sugars and phenol content compared to cloth bag and gunny bag during the entire period of storage in both the genotypes. Among the genotypes, IPM 2-14 performed better by recording high germination, protein content and low moisture content, electrical conductivity of seed leachates, total soluble sugars and phenol content after six months of storage, while higher seedling length and seedling vigour index-I was recorded in LGG 460 at the end of storage. After six months of storage, neem leaf powder treated seed stored in 700 gauge polythene bag maintained better seed quality with higher germination, seedling length, seedling vigour index-I and low moisture content, electrical conductivity of seed leachates, total soluble sugars and phenol content in both the green gram genotypes, while, higher protein content in IPM 2-14 and LGG 460 was recorded with neem leaf powder treated seed stored in cloth bag and polythene (700 gauge) bag, respectively among all the interaction effects. These storability studies using green gram varieties, IPM 2-14 and LGG 460, clearly revealed that it is preferable to treat the seed of these green gram genotypes with neem leaf powder and store in moisture or vapour proof packaging material i.e., polythene (700 gauge) bag to enhance the quality and storability of green gram seed.
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