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Studies on Sweet Corn as Potential Young Cob Corn (Zea Mays L.)
Dissertation Abstract:
Three experiments were conducted to select a potential young cob corn variety and determine the nutritional value of young cob corn, the proper stage for harvesting, and the optimum rate of fertilizer and plant population for maximum yield.
The nutritional value composition of young cob corn was similar in amount and kind with some non-legume vegetables. It was best harvested at two days after silking for canning and three days for local consumption. The Golden Cross Bantam and Super Sweet varieties were promising in terms of earliness, high yield, number of ears/plant, high enzyme nitrate reductase. Different plant populations of Super Sweet required different optimum rates of fertilizer for maximum yield. For plants grown at a population of 60,000 plants/ha, the optimum rate was 195 kg/ha; at 120,000 plants/ha. 186 kg N/ha; and 180,000 plants/ha, 192 kg N/ha.
Increased rates of nitrogen application and plant population significantly affected agronomic characteristics, nitrate reductase activity, and yield and its components, compared with the control. Increased rates tremendously increased yield/ha.
Enzyme nitrate reductase in corn leaf increased with increased nitrogen application but decreased with increased plant population.