Effects of shading and nitrogen on growth of corn (Zea mays L.) under field conditions

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Abstract

Field studies were performed in the growing seasons of 1967 and 1968 to determine the differential response of vegetative corn growth to three levels of shading (27, 51, and 100% sunlight) and three levels of nitrogen (0, 222, and 444 kg/ha). Ammonium nitrate was used as the N fertilizer. Shades were removed when the unshaded plants started tasselling. Subsequent stover and grain production was determined. During the vegetative period, N increased dry matter yield per plant, and the rate of increase was enhanced at higher light levels. This was consistent in both years. The effect of shading during vegetative period on N use appeared to depend on season, or perhaps on planting date. In 1967, with a late planting date, the N-shading interaction was found in final stover and ear yields. In 1968, with a planting date in early spring shading-N interactions were noted at 8 1/2 weeks of growth but not at maturity. © 1972 Martinus Nijhoff.

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APA

Chan, W. T., & Mackenzie, A. F. (1972). Effects of shading and nitrogen on growth of corn (Zea mays L.) under field conditions. Plant and Soil, 36(1), 59–70. https://doi.org/10.1007/BF01373457

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