The field experiment was conducted at the Instructional Farm, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal to study the effect of boron and zinc application on growth, seed yield and its quality of water spinach (Ipomoea reptans Poir.). The study consisted of borax @ 0 (B0), 25 kg/ha through soil (B1) and 1.5 g/litre twice through foliar sprays at 15 days interval (B2) and ZnSO4 @ 0 (Zn0), 15 kg/ha through soil (Zn1) and 1.5 g/litre twice foliar sprays at 15 days interval (Zn2) and their nine treatment combinations (viz. B0 Zn0, B1 Zn0, B2 Zn0, B0Zn1, B1 Zn1, B2 Zn1, B0Zn2, B1 Zn2 and B2 Zn2. The results revealed that application of boron and zinc at all rates alone and as combinations markedly influenced all growth, seed yield and its quality parameters as compared with the control. Soil application of borax @ 25 kg/ha and ZnSO4 @ 15 kg/ha alone and as combination recorded maximum number of flowers/hill (282.6, 275.1 & 311.5), number of capsules/hill (238.2, 220.7 & 257.8), seed yield (1.22 t/ha, 1.21 t/ha & 1.32 t/ha), shelling percentage (67.14%, 67.06% & 68.76%), 1000 seed weight (38.05 g, 38.25 g & 41.16 g), germination percentage (86.6%, 86.3% & 90.0%), seedling vigour index (6.20, 6.26 & 6.63) and seedling growth rate (0.123, 0.123 and 0.127 g/plant/day), respectively over control. Maximum vine length, number of nodes per plant, average internode length and chlorophyll content of leaf were found in twice foliar sprays of bo-rax @ 1.5 g/litre (B2) and twice foliar sprays of ZnSO4 @ 1.5 g/litre (Zn2) individually as well as their combination (B2Zn2). Considering the benefit : cost ratio (B: C ratio), combination of both soil application of borax @ 25 kg/ha and ZnSO4 @ 15 kg/ha (B1Zn1) was found most economical (2.60).
Growth, Lpomoea reptans, Boron, Zinc, Seed yield, Seed quality, Water spinach
Chatterjee, R. and Bandyopadhyay, S. (2015). Effect of
boron, molybdenum and biofertilizers on growth and yield of cowpea (Vigna unguiculata L. Walp.) in acid soil of eastern Himalayan region. Journal of the Saudi Society of Agricultural Sciences, http://dx.doi.org/10.1016/j.jssas.2015.11.001.
Edie, H. H. and Ho, B. W. C. (1969). Ipomoea aquatica as a vegetable crop in Hong Kong. Econ. Bot., 23: 32-36.
Gomez, K. A. and Gomez, A. A. (1984). Statistical
Procedures in Agricultural Research, p 680 John Wiley and sons (2nd Ed.). New York.
Halder, N. K., Hossain, M. A., Siddiky, M. A., Rafiuddin, Md. and Ullah, M. H. (2007). Performance of Mustard Varieties with Boron Fertilization in Calcareous Boron Flood plain Soil of Bangladesh. Journal of Agronomy, 6: 171-174.
Lewis, D. H. (1980). Boron lignifications and the origin of vascular plants - a united hypothesis New Phytol. 84: 209-229.
Naga, S. K., Swain, S. K., Sandeep, V. V., Raju, B. (2013). Effect of foliar application of micronutrients on growth parameters on tomato (Lycopersicon esculentum Mill). J. Agric. Food Sci., 1: 146-151.
Naren, Tung., Ogle, R. B. and Preston, T. R. (1994). Optimum protein supply and level of inclusion of water spinach (Ipomoea aquatica) in sugar cane juice based diets for growing ducks. M. Sc. Thesis in Sustainable Livestock Production, Swedish University of Agricultural Science, Uppsala. pp 8-9.
NIAH (National Institute of Animal Husbandry). (1995). Composition and nutritive value of animal feeds in Vietnam. Hanoi, Vietnam.
Oomen, H. A. P. C. and Grubben. (1978). Tropical leaf vegetables in human nutrition. Communication 69, Deptt. of Agric. Research, Royal Tropics Institute, Amsterdam, Netherlands.
Palada, M. C. and Crossman, S. M. A. (1998). Planting density affects growth and yield of bush okra (Corchorus olitorius). Proceedings of 34th Annual Meeting 1998 â€“ Caribbean Food Crop Society, pp. 52-57.
Parr, A. J. and Loughman, B. C. (1983). Boron and membrane function in plants. In: Metals and Micronutrients: Uptake and Utilization by plants, D.A. Robb and W. S. Pierpoint (Eds.), pp. 87-107. Academic Press, New York,
Santosh, K. (2012). Effect of micronutrients on quality of fruit and seed in tomato (Lycopersicon esculentum). Internat. J. Farm . Sci., 2: 43-46.
Sharangi, A. B., Pariari, A., Chatterjee, R. and Das, D. K. (2002). Response of boron and zinc on growth and seed yield of fennel. Journal of Interacademicia, 6(4): 472-475.
Sharma, S. K., Singh, H. and Kohli, U. K. (1999). Influence of boron and zinc on seed yield and quality in radish. Seed Research, 27: 154-158.
Sinta, I., Vijayakumar, A. and Srimathi, P. (2015). Effect of micronutrient application in coriander (Coriandrum sativum L.) cv. CO4. African Journal of Agricultural Research, 10(3): 84-88.
Thacker, P. A. (1990). Alfalfa meal. In: Nontraditional Feed Sources for Use in Swine Production (Editors: P. A. Thacker and R. A. Kirkwood), pp 6-9. Butterworths, London.
Wen, H. D., Xin, H. T., Zhi, Z. C. and Alan, H. (2009). Effects of Micronutrients on Seed Yield and Yield Components of Alfalfa. Journal of Plant Nutrition, 32(5): 809-820.
Yang, M., Shi, L., Xu, F. S., Lu, J. W. and Wang, Y. H. (2009). Effects of B, Mo, Zn, and their interactions on seed yield of rapeseed (Brassica napus L.). Pedosphere, 19(1): 53-59.
Zeidan, M. S., Mohamed, M. F., Hamouda, H.A. (2010). Effect of foliar fertilization of Fe, Mn and Zn on wheat yield and quality in low sandy soils fertility. World J. Agric. Sci., 6: 696-699.
This work is licensed under Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) © Author (s)