Biology and Life Sciences
Received: 23 Jul 2018 , Published: 23 July 2018
Views: 114 , Download: 66
|1||Dr. S. Sutharsan|
An appropriate combination of inorganic and organic nitrogen sources and plant spacing is vital to increase the yield of tomato with minimum environmental hazards. We therefore carried out this experiment at the Crop Farm, Faculty of Agriculture, Eastern University, Sri Lanka to investigate the effects of different levels of organic nitrogen (ON) and inorganic nitrogen (IN) sources and plant spacing on growth and yield of tomato (Lycopersicon esculentum Mill.). Plants were grown at three different spacing (S1- 80 cm × 35 cm, S2- 80 cm × 50 cm and S3- 80 cm × 80 cm) and at three different levels of nitrogen sources (N1- 75% of IN + 25% of ON, N2- 50% of IN +50% of ON and N3- 25% of IN +75% of ON). The results showed significant variations on plant height, leaf area and plant biomass at harvesting time and fruit yield of tomato among treatments. Treatment N1S3 produced highest leaf area (1450.78 cm2 /plant). However, N1S1 produced highest plant biomass (2648.70 kg.ha-1) and fruit yield (27.93 Mt.ha-1). This study therefore suggests that combination of 75% of IN and 25% of ON and plant spacing of 80 cm × 35 cm is most favoured option to increase the productivity of tomato in Batticaloa region.
Keywords: Biomass, Nitrogen sources, Plant spacing, Sandy regosol, Tomato yield
Abdel-Mawgoud, N.H.M, El-Greadly, Helmy, Y.I. and Singer, S.M. 2007. Responses of tomato plants to different rates of humic-based fertilizer and NPK fertilization. Journal of Applied Science Research 3(2): 169-74.
Abrha, H., Kebede, A., Amare, B. and Desta, M. 2015. Effect of Inter and Intra-Row Spacing on Yield and Yield Components of Tomato (Solanum lycopersicum Linn.) in South Tigray, Ethiopia. Journal of Natural Sciences Research 5(5):1-5.
Adekiya, A.O., Ojeniyi, S.O. and Agbede, M.T. 2012. Poultry manure effects on soil properties, leaf nutrient status, growth and yield of cocoyam in a tropical Alfisol. Nigerian Journal of Soil Science 22(2): 30-9.
Alsadon, A.A. and Khalil, S.O. 1993. Effect of Nitrogen Level on Two Tomato Cultivars under Plastic House Conditions. Journal of King Saud University, Agricultural Science 5(1).69-77.
Ara, N., Bashar, M.K., Begum, S. and Kakon, S.S. 2007. Effect of spacing and stem pruning on the growth and yield of tomato. International Journal of Sustainable Crop Production 2(3): 35-39.
Bodunde, J.G., Erinle, I.D. and Eruotor, P.G. 1996. Selecting tomato genotypes for heat tolerance using Fasoulas’ line method. Proceeding of 14th HORTON conference, Ago-Iwoye, 1-4 April, 1996, pp 24-34.
Cezer, P.M. 2004. Organic fertilizer in rice: Myths and facts. A Public Education Series of the Asia Rice Foundation 1 (1):1-3.
Chukwu, L.I., Ano, A.O. and Asawalam, D.O. 2012. Effects of Poultry Manure and NPK fertilizer on soil properties and Nutrient uptake of maize (Zea mays L.) plants growth in an ultisol. Proceedings of the 36th Annual Conference of the Soil Science Society of Nigeria (SSSN) on 7th-11th March, 2012 University of Nigeria Nsukka.
Clark, M.S., Horwath, W.R., Shennan, C., Scow, K. M., Lantni, W.T. and Ferris, H. 1999. Nitrogen, weeds and water as yield-limiting factors in conventional, low-input, and organic tomato systems. Agriculture, Ecosystems and Environment 73(3):257-70.
Dahmardeh, M., Ramroodi, M. and Valizadeh, J. 2010. Effect of plant density and cultivars on growth, yield and yield components of faba bean (Vicia faba L.). African Journal of Biotechnology 9(50): 8643-47.
Gaskell, M. and Smith, R. 2007. Nitrogen sources for organic vegetable crops. HortTechnology 17(4):431–41.
Gupta, A. and Shukla, V. 1977. Response of tomato to plant spacing, nitrogen, phosphorus and potassium fertilizer. Indian Journal of Horticulture 34 (3): 270-6.
Gweyi-Onyango, J.P, Neumann, G. and Römheld, V. 2009. Effect of different forms of nitrogen on relative growth rate and growth components of tomato (Lycopersicon esculentum L.). African Journal of Horticultural Sciences.2:43-55.
Hooda, R.S., Singh, J., Mallk, Y.S. and Batra, V.K. 2001. Effect of planting geometry on fruiting behaviour of direct seeded tomato. Haryana Journal of Horticultural Sciences 31 (1-2). 111-3.
Kimani, N.G. 2007. Environmental Pollution and Impacts on Public Health: Implications of the Dandora Dumping Site Municipal in Nairobi, Kenya, United Nations Environment Programme, pp 1-31.
Kirimi, J.K., Itulya, F.M. and Mwaja, V.N. 2011. Effects of Nitrogen and Spacing on Fruit Yield of Tomato. African Journal of Horticultural Sciences 5:50-60.
Law-Ogbomo, K.E. and Egharevba, R.K.A. 2009. Effects of planting density and NPK fertilizer application on yield and yield components of tomato (Lycopersicum esculentum Mill) in forest Location. World Journal of Agricultural Sciences 5(2): 152-58.
Locascio, S.J., Hochmuth, G.J., Rhoads, F.M., Olsen, S.M., Smajstrla, A. G. and Hanlon, E.A. 1997. Nitrogen and potassium application scheduling effects on drip-irrigated tomato yield and leaf tissue analysis. HortScience 32 (2):230–35.
Mbinga, E.W. 1983. Pruning and Spacing Effect on Tomato var. Seeda Nam Khem. ARCTraining Report. pp 1-4.
Mehla, C.P, Srivastava, V.K, Singh, J. and Ram, M. 2000. Response of tomato (Lycopersicon esculetitum Mill.) varieties to N and P fertilization and spacing. Indian Journal of Agricultural Research 34(3):182-4.
Miko, S. and Manga, A.A. 2008. Effect of intra- spacing and nitrogen rates on growth and yield of sorghum (Sorghum bicolor L.) Var. ICSV 400. Journal of Process Analytical Technology (PAT) 4 (2): 66-73.
Okigbo, I. 2000. Application of organic and inorganic fertilizers and the response of maize crop. Nigerian Journal of Soil Science 18 (2). 22.
Sharma, K.C, Singh, A.K. and Sharma, S.K. 1999. Studies on Nitrogen and Phosphorus requirement of tomato hybrids. Annals of Agricultural Research 20(4): 339-402.
Usman, M., Madu, V.U and Alkali, G. 2015. The Combined Use of Organic and Inorganic Fertilizers for Improving Maize Crop Productivity in Nigeria. International Journal of Scientific and Research Publications 5(10):1-7.
Warner, J., Hao, X. and Zhang, T.Q. 2002. Effects of row arrangement and plant density on yield and quality of early, small-vined processing tomatoes. Canadian Journal of plant Science 2(4):765-70.