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Plant density and nitrogen studies with irrigated hybrid maize in the Lock-yer Valley, Queensland

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Dickson, T. (1968) Plant density and nitrogen studies with irrigated hybrid maize in the Lock-yer Valley, Queensland. Queensland Journal of Agricultural and Animal Sciences, 25 (4). pp. 199-210.

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Abstract

In 3 trials using standard 36-in. row spacing and plant populations of 12, 000-24, 000/ac, higher plant populations gave the highest yields; in 2 trials with row spacings of 30-42 in. and plant populations of 12, 000-28, 000/ac, yields increased as populations increased up to 24, 000 in one trial, and up to 16, 000 in the other. In only 1 of 3 trials was there a significant response to row width; in this trial, yields from 30-in. rows were significantly higher than from greater row widths. Applications of N depressed yields, probably as a result of early lodging. Ear percentages decreased with increasing plant density and were highest for the 30-in. row width. Grain weight/ear rose with plant density but was not affected by row width or applied N. % of nubbins (poor-quality ears) increased as plant density was reduced to 16, 000, but row spacing and N had no significant effect.-F.A.S.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Subjects:Agriculture > Agriculture (General) > Fertilisers
Plant culture > Field crops > Corn. Maize
Live Archive:16 Apr 2024 00:38
Last Modified:16 Apr 2024 00:38

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