Institute of Agricultural Research and Training, Moore Plantation, Ibadan

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Browsing Institute of Agricultural Research and Training, Moore Plantation, Ibadan by Author "Ogunremi, E. A."

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    Effect of Age-at-Harvest on Sugarcane (Saccharum officinarum L.) Yields in Southwestern Nigeria
    (Faculty of Agriculture, University of Ife, 1981) Ogunremi, E. A.
    The experiment testing the effect of age-at-harvest on sugarcane showed that standing-over significantly reduced cane and sugar yields. Highest yields were obtained from 15 month-old crops. Standing-over reduced yields by increasing the percentage of unmillable cane stalks. The need to develop suitable and more adaptable cultivars is highlighted.
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    The effect of plant population on sunflower (Helianthus annus L.) seed yield in southwestern Nigeria
    (Faculty of Agriculture, University of Ife, 1979) Ogunremi, E. A.
    Field experiments were conducted at two locations during the early and late seasons of 1966 to 1968 to investigate effects of plant population on seed yields of sunflower, variety Russian Giant. Plant population treatments significantly influenced seed yields and yield components. Mean yields differed significantly between early and late seasons and highest yields of 2,822kg/ha and 1,238kg/ha were obtained at 18.000 plants/ha indicated as the optimum population. Significant population x location and location x season interactions were observed. High humidity in the rainforest zone resulted in severe head rot and low yields. It is suggested that sunflower varieties might differ in seed production efficiency.
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    Performance of Sesame (Sesamum indicum, L.) in Southwestern Nigeria as Influenced by Rowspacing
    (Faculty of Agriculture, University of Ife, 1982) Ogunremi, E. A.
    Experiments were conducted in two ecological zones in Nigeria during 1977 and 1978 to investigate the influence of inter-row spacing on growth, development and yield of sesame (Sesame indicum, L.). 16 treatments, consisting of two cultivars (Yandev 55 and 65A - 36) and eight rowwidths (7.5, 15.0, 22.5, 30.0, 37.5, 45.0, 52.5 and 60.0cm) were tested in a randomised complete block design with four replications. Leaf area, dry matter production and yields were significantly influenced by inter-row spacing. Dry matter accumulation increased with increase in inter-row spacing. Seed and oil yields increased with inter-row spacing up to 37.5cm Greater dry matter was diverted into the capsule of plants grown in 37.5cm rows. Cultivar 65A - 36 was significantly better with a mean yield of 428 kg/ha than Yandev 55 which gave 360 kg/ha. Seed production efficiency was higher by 8% in cultivar 65A - 36 than in Yandev 55. The growth analysis suggested that the green capsules contributed towards the accumulation of their dry matter.