Ontogeny of maize in relation to sequential cropping
1988
Wright, D.L. | Teare, I.D. | Kidd, B.T. (Florida Univ., Quincy (USA). Florida Agricultural Experiment Station. Institute of Food and Agricultural Science)
A method to allow the prediction of the date of maize maturity early in the development of the plant was developed in order to evaluate the feasibility of planting a second crop in a sequential cropping system. Maize was planted on 15 planting dates in 1981 and 1982. 3 maize phenological events, emergence, tasseling and harvest maturity, were recorded in terms of "days to event'. When days to event was regressed on planting date, the slopes were significantly different (P 0.0001) from one another; orthogonal comparisons showed that the slopes for tasseling and harvest were not significantly different (P = 0.2739), but both differed significantly (P 0.0001) from that of emergence. Hence the maize harvest maturity could be predicted and used in a decision-making process for the sequential cropping of soybean and sorghum by the addition of 58 days to time of 50 % tasseling in northern Florida
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