NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT
Journal of the Faculties of Science and Agriculture, Delta State University, Abraka, Nigeria
ISSN: 1119-9008
DOI: 10.5987/UJ-NJSE
Email: njse@universityjournals.org
RESPONSE OF OKRA TO DIFFERENT LEVELS OF NPK 20:10:10 FERTILIZER IN AN EXPERIMENTAL FARM IN ASABA, DELTA STATE, NIGERIA
DOI: 10.5987/UJ-NJSE.16.024.1 | Article Number: A3B1A43 | Vol.12 (1) - May 2013
Author: Ojobor S. A.
Keywords: Soil fertility, Inorganic fertilizer, Okra
The field experiment assessed the influence of different levels of NPK 20:10:10 on the growth and yield of okra. The study was carried out on experimental site close to low rice Experimental Field (Fadama), Department of Agronomy, Delta State University, Asaba Campus in 2009 cropping sea- son. Five levels of NPK 20:10:10 were applied (0, 150, 200, 250 and 300 kg/ha), replicated four times. The okra variety used was lady finger. Both the fertilizer and okra seeds were obtained from ADP, Ibusa, Asaba. Parameters considered were: plant height, number of leaves, plant girth, total leaf area, number of pods per plant and pod yield per hectare. Pre planting soil analysis was also conducted. The growth and yield data collected were subjected to analysis of variance, differences among treatments mean were separated using DMRT at 5% level probability. The result of the soil analysis shows that the experimental site was deficient in some major nutrient elements (N, K and Mg). There were significant differences among the levels of NPK 20:10:10 application. Growth parameters increases with age of plant. The highest number of pod was observed at 300 kg/ha and it was significantly higher than the lower levels. Also, 300 kg/ha had the highest pod yield per hec- tare, though it was not significantly different from 250 kg/ha but was significantly different from the other lower levels. Therefore, 250 kg/ha is recommended to farmers in Asaba and its environs for optimum okra production.
Abdulsalam, R. A. and Ogunsola, O. A. (2007). Response of okra (Abelmoschus esculentus) to N and P fertilization under wet and dry conditions in Bauchi. Pro- ceeding of the 31th Annual Conference of the soil society of Nigeria. p312-319.
Agboola, A. A. (1982). Organic manuring in tropical Africa. Symposium paper 1. In- ternational Conference on Soil Science. New Delhi India, Pp 8-16.
Akinfosoye, J. A. and Olufaloji, A. O. (1998). Performance of pepper (Capsicum frutescen) under varying lev- els of poultry manure. Proceedings of 16th Annual Conference of Horticultural Science. p112-115.
Anderson, J. M. and Ingram, J. S. I. (1993).
Tropical Soil Biology and Fertility. A hand book of methods 2nd (ed). CAB International Information Press Ltd, Eiynsham.
Anonymous (2000). Okra, a multiple crop for the temperate and tropics. Economy Botany, 50: 279-283.
Meteorological Bulletin (2009). Asaba Mete- orogical Report, National Meteorologi- cal Agency, Lagos.
Awe, O. A., Abdulsalam, R. A. and Ogun- sola, O. A. (2007). Effects of NPK 20:10:10 fertilizer on the pod and yield root growth of okra in the Humid Trop- ics. Proceeding of the 31th Annual Con- ference of the soil society of Nigeria. p275-279.
Babatola, I. A. and Olaniyi, M. A. (1999).
Effects of NPK fertilizer levels and plant spacing on performance and shelf life of okra. In: Proceedings of the 15th Annual Conference of Horticultural Society of Nigeria (Adejoro, M. A. and Ai- yelaagbe, I. O. eds). p46-48.
Bouyoucous, G.H. (1951). A recalibration of
23
Nigerian Journal of Science and Environment, Vol. 12 (1) (2013)
the hydrometer for making mechanical analysis of soils. Agronomy Journal 43: 434-438.
Daramola, D. S., Nwangburuka, C. C. and Dada, S. O. (2004). Synergism of com- bined inorganic and organic starter nitro- gen application on cowpea growth and nodulation. Proceeding of the 29th Annu- al Conference of the soil society of Nige- ria. p193-195.
Enwezor, W. O., Udo, E. J., Ayotade, K. A., Adepetu, J. A. and Chude, V. O. (1988). Literature Review on Soil Fertil- ity Investigations in Nigeria (in five vol- umes). Federal Ministry of Agriculture and Natural Resources, Lagos, Nigeria.
Nzewi, G.I. (1979). Methods for Routine Soil Analysis in Nigeria, Federal Department of Agriculture, Abuja.
Federal Department of Agriculture (2000).
Fertilizer use and management practices for crop in Nigeria, Federal Fertilizer Department, Ministry of Agriculture and Rural Development, Abuja.
ICRSAT (International Crop Research In- stitute for Arid and Semi-Arid Trop- ics) (1991). Annual Report and Research Highlights for West Africa programs, Patancheru, p78.
International Institute of Tropical Agricul- ture (1979). Selected Methods for Soil and Plant Analysis. Manual series, Inter- national Institute of Tropical Agricul- ture, Ibadan, 1:53.
Jackson, M. L. (1941). Soil Chemical Analy- sis. Pergaman Press, New York.
Muoneke, C. O. and Aliyu, E. C. (1997). Re- sponses of Okra (Abelmoschus esculen- tus) to plant density and pattern of plant arrangement in Nigeria. Indial Journal of Agricultural Science. 61: 726-730.
Ojeniyi, S. O. (2000). Effect of Poultry Ma- nure and NPK Fertilizer on Soil Fertility and Maize Nutrient Contents and Yield at Akure, Southwestern Nigeria. Pro- ceedings of 25th Annual Conference of Soil Science Society of Nigeria. pp185- 191.
Okigbo, B.N. (1991). The development of Sustainable Agricultural Systems in Tropical Africa. International Institute of Tropical Agriculture, Ibadan.
Phillips, T. A. (1997). An Agricultural Note- Book (With Special Reference to Nige- ria) London Group Ltd, London.
SAS Institute, Inc. (1996). SAS/STAT users guide. Version 64th ed. SAS institute, Inc., Cary, NC.
Tollessa, D. (1999). Effects of organic and inorganic fertilizers on maize grain yield in western Ethiopia. Africa Crop Science Conference Proceedings. 4: 229-232.