Effect of media fortified with plant growth promoting bacteria on germination and seedling growth of papaya (Carica papaya L.) cv. Red Lady
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Date
2019
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CCSHAU
Abstract
The present investigation entitled “Studies on effect of media fortified with plant growth promoting bacteria on germination and seedling growth of Papaya (Carica papaya L.) cultivar Red Lady was carried out during 2018-19 at Centre for Quality Planting Material, CCS Haryana Agricultural University, Hisar, to find the effect of media fortification with plant growth promoting bacteria and growing condition on germination and growth of papaya seedling. The papaya seeds were grown in sixteen different fortified media and placed under open field and polyhouse conditions. The data were recorded on days taken to seed germination, germination percentage, seed vigour index, seedling height and diameter at 15 days interval after germination, fresh weight and dry weight of seedling, shoot fresh weight and dry weight, leaf water content, saleable seedling percentage, length and diameter of tap root, root volume, root fresh and dry weight. The recorded data were subjected to statistical analysis using completely randomized design.
The fortified media of Cocopeat : Vermiculite : Perlite (3:1:1) + Mac 27 + PSB- P 36 under polyhouse conditions exhibited minimum days for germination, maximum germination percentage and maximum leaf water content irrespective of growing conditions. The fortified media of Soil: Sand: Vermicompost (1:1:1) + Mac 27 + PSB-P 36 resulted in maximum seed vigour index, seedling height, seedling diameter, fresh weight of seedling, shoot fresh weight, shoot dry weight, saleable seedling percentage, length of tap root, diameter of tap root, root volume, fresh weight of root and dry weight of root. The shoot dry weight of seedlings grown in fortified media of Soil: Sand: Vermicompost (1:1:1) and Soil : Sand : FYM (1:1:1) + Mac 27 + PSB- P 36 under polyhouse conditions was statistically at par with each other. On the basis of present investigation it is concluded that the combination of fortified media [Soil: Sand: Vermicompost (1:1:1) + Mac 27 + PSB-P 36] and polyhouse conditions are the best for obtaining maximum growth in seedling along with maximum saleable seedling %, hence the use of the same is suggested for papaya nursery to obtain maximum saleable seedlings.
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