Effect of Seed Coating with Plant Nutrients on Germination and Seedling Growth of Jack Bean (Canavalia ensiformis)
Keywords:
seed quality, seed coating, coating substance, plant nutrientAbstract
In northeast Thailand, many provinces grow jack beans in a large number of areas. This is because farmers are able to sell jack bean seeds at a higher price compared to other bean seeds. However, there are problems that can be encountered, such as slow seed germination, interferences by diseases and pests, un-uniform seed germination, and low flowering and fruit setting rates. These problems lead to yield reduction. Coating seed with plant nutrients can offer an alternative solution to this problem. This experiment was conducted at the Seed Technology Laboratory, Agronomy Major, Faculty of Agricultural Production, Maejo University. This experiment relied on Completely Randomized Design (CRD) with 4 replications of each set of experiment which included non-coated seeds and seeds coated with: PVP-K30 + Chitosan; PVP-K30 + Chitosan, and 0.5, 1.0, 1.5, and 2.0 grams of C6H8O6; PVP-K30 + Chitosan, and 0.5, 1.0, 1.5, and 2.0 grams of MgSO4; PVP-K30 + Chitosan, and 0.5, 1.0, 1.5, and 2.0 grams of CaCl2. The results were as follows: Jack bean seeds coated with all ratios of MgSO4 and CaCl2 had better germination percentage, mean germination time, seedling fresh weight when compare to non-coated seeds. Particularly, seeds coated with 0.5 grams of MgSO4 had a higher shoot length, better total seedling length, and were heavier when dried compared to non-coated seeds when tested under a laboratory condition. It was also found that seeds coated with all ratios of C6H8O6 had better germination percentage compared to non-coated seeds. Seeds coated with 0.5 grams of C6H8O6 had a higher shoot length, were heavier when fresh, and were heavier when dried compared to other experiment methods when tested under greenhouse conditions
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