Abstract
The experiment was carried out at the Horticulture Research Centre of the Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, during April to September 2013to investigate the effects of boron, zinc, and NPK on the yield and quality of okra seed subjected to improve the micronutrient management practices on quality seed production. There were four levels of boron and zinc (0 kg B + 0 kg Zn/ha, 1.5 kg B + 2.0 kg Zn/ha, 2.0 kg B + 4.0 kg Zn/h and 2.5 kg B + 6.0 kg Zn/ha) and three levels of NPK fertilizers (50% less than the recommended dose of NPK, recommended dose of NPK and 50% more than the recommended dose of NPK). Different selected levels of boron and zinc application separately and in combination with NPK fertilizers influenced the yield and quality of okra seed. Application of 2 kg B/ha and 4 kg Zn/ha in combination with the recommended dose of NPK fertilizers demonstrated the highest seed yield (2.69 t/ha), seed germination (97.00%), seedling vigour index (2845.01) and seed protein content (19.89%) whereas the lowest seed yield (1.93 t/ha.), seed germination (78.50%), seedling vigour index (1953.86) and seed protein content (16.30%) were found from 0 kg B/ha and 0 kg Zn/ha with 50% less than the recommended dose of NPK application. Maximum yield and good quality of okra seed can be obtained from the application of 2 kg B and 4 kg Zn/ha, in combination with the recommended dose of NPK fertilizers.
Highlights
Okra (Abelmoschusesculentus L.) is a popular nutritious vegetable in Bangladesh which belongs to the Malvaceae family and locally known as “Dherosh” or “Bhindi. It is grown in the summer season when vegetables are scanty in the market [1]
The experiment was carried with 12 treatment combinations comprising four levels of boron and zinc (0 kg B + 0 kg Zn/ha, 1.5 kg B + 2.0 kg Zn/ha, 2.0 kg B + 4.0 kg Zn/h and 2.5 kg B + 6.0 kg Zn/ha) and three levels of NPK fertilizer (50% less than the recommended dose, Recommended dose and 50% more than the recommended dose of NPK)
The height of plant varied with soil application of boron and zinc levels
Summary
Okra (Abelmoschusesculentus L.) is a popular nutritious vegetable in Bangladesh which belongs to the Malvaceae family and locally known as “Dherosh” or “Bhindi. It is grown in the summer season when vegetables are scanty in the market [1]. Okra (Abelmoschusesculentus L.) is a popular nutritious vegetable in Bangladesh which belongs to the Malvaceae family and locally known as “Dherosh” or “Bhindi. The green tender fruits of okra contain 1.76g protein, 8.73g carbohydrate, 1.1g fibre, 88 IU Vitamin A, 9.8 mg Vitamin C and 116 mg Ca in every 100g of okra [2]. The seed of okra is a good source of protein [3]. Successful crop production depends on quality seed. Most of the farmer uses their own seeds which are in most cases of inferior quality and use of poor quality seeds is responsible for low yield in Bangladesh [4]. Production can be increased up to 25-50% [5, 6]. Good quality okra seed is very necessary for the farmers of Bangladesh. There are several major factors viz., maintenance of genetic purity, prevailing agro-ecological
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