Economic Analysis of Yields of Citrus as Influenced by Organo-Mineral Fertilizer Treatments in Ibadan, Southwest Nigeria
نویسنده
چکیده
A trial was conducted in a 7-year old citrus orchard of the National Horticultural Research Institute, Nigeria, to investigate the effect of different levels of organo-mineral fertilizers as it affect the economic returns of sweet orange (Citrus sinensis L. Osbeck var. Agege 1). The treatments consisted of: (1). 10 tha Poultry 1 manure (PM), (2). 15 t ha PM, (3) 20 t ha-1 PM, (4). 0.45 t ha NPK, (5) 10 t ha PM+ 0.2 t ha NPK, (6) 15 1 1 1 1 t ha PM+0.15 t ha NPK, (7) No fertilizer (control). These were applied in two split-doses for two years. 1 1 Results indicated that fertilized trees were significantly different in tree height, canopy spread, canopy volume, stem girth and fruit yield. Trees treated with 15t/ha PM gave the highest fruit yield and gross margin throughout the periods of investigation. INTRODUCTION However, the rising cost of chemical fertilizer has further
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