Comparative efficacy of organic manures and urea fertilizer on growth and yield of okra (<I>Abelmoschus esculentus (L) Moench</I>)
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Abstract
Two year field study was conducted to evaluate effects of organic manures and urea on growth and yield of okra at University of Calabar Teaching and Research Farm, Calabar, in 2009 and 2010, using randomized complete block design (RCBD) having eight treatments; 10 t ha-1 of poultry manure (PM), 10 t ha-1 cow dung (CD), 200 kg ha-1 urea fertilizer (UF), 5 t ha-1 PM + 5 t ha-1 CD + 100 kg ha-1 UF, 5 t ha-1 PM + 5 t ha-1 CD, 5 t ha-1 PM + 100 kg/ha UF and 5 t ha-1 CD + 100 kg ha-1 UF with three replications. Data collected for growth and yield was subjected to analysis of variance at 5%. Means were compared using Duncan Multiple range Test at 0.05 probability. Results showed that application of 5 t ha-1 PM + 5 t ha-1 CD + 100 kg ha-1 UF significantly increased plant height, number of leaves at 6 and 8 weeks after planting (WAP), stem girth at 8 WAP and leaf area index at all sampling periods. Highest okra pod yield was recorded at application of 5 t ha-1 PM + 5 t ha-1 CD + 100 kg ha-1 UF.
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