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Effect of deep ripping, the previous crop, and applied nitrogen on the growth and yield of a wheat crop

Effect of deep ripping, the previous crop, and applied nitrogen on the growth and yield of a... <jats:p>The response, to ripping and nitrogen application, of a wheat crop which has grown after a 1 -year crop of wheat, lupins and pasture was measured in terms of tops growth, nitrogen uptake, rooting depth and grain yield. Although there were limitations to the data set used, a graphical method demonstrating separation of the effects of treatment on soil nitrogen status and nitrogen use efficiency was compared using the classical analysis of variance. Ripping increased the rate of root extension and this caused the more efficient use of fertiliser nitrogen early in the season. Compensatory nitrogen uptake took place late in the season on the unripped plots. However, grain and tops yields were significantly greater on the ripped plots. The major effect of a previous crop of lupins was to increase the nitrogen status of the plots, although early in the season the efficiency of nitrogen use was also improved. A dry finish to the season turned a statistically non-significant ripping x nitrogen x species interaction for tops growth into a significant negative interaction for grain yield.</jats:p> http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australian Journal of Experimental Agriculture CrossRef

Effect of deep ripping, the previous crop, and applied nitrogen on the growth and yield of a wheat crop

Australian Journal of Experimental Agriculture , Volume 26 (4): 469 – Jan 1, 1986

Effect of deep ripping, the previous crop, and applied nitrogen on the growth and yield of a wheat crop


Abstract

<jats:p>The response, to ripping and nitrogen application, of a wheat crop which has grown after a 1 -year crop of wheat, lupins and pasture was measured in terms of tops growth, nitrogen uptake, rooting depth and grain yield. Although there were limitations to the data set used, a graphical method demonstrating separation of the effects of treatment on soil nitrogen status and nitrogen use efficiency was compared using the classical analysis of variance. Ripping increased the rate of root extension and this caused the more efficient use of fertiliser nitrogen early in the season. Compensatory nitrogen uptake took place late in the season on the unripped plots. However, grain and tops yields were significantly greater on the ripped plots. The major effect of a previous crop of lupins was to increase the nitrogen status of the plots, although early in the season the efficiency of nitrogen use was also improved. A dry finish to the season turned a statistically non-significant ripping x nitrogen x species interaction for tops growth into a significant negative interaction for grain yield.</jats:p>

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Publisher
CrossRef
ISSN
0816-1089
DOI
10.1071/ea9860469
Publisher site
See Article on Publisher Site

Abstract

<jats:p>The response, to ripping and nitrogen application, of a wheat crop which has grown after a 1 -year crop of wheat, lupins and pasture was measured in terms of tops growth, nitrogen uptake, rooting depth and grain yield. Although there were limitations to the data set used, a graphical method demonstrating separation of the effects of treatment on soil nitrogen status and nitrogen use efficiency was compared using the classical analysis of variance. Ripping increased the rate of root extension and this caused the more efficient use of fertiliser nitrogen early in the season. Compensatory nitrogen uptake took place late in the season on the unripped plots. However, grain and tops yields were significantly greater on the ripped plots. The major effect of a previous crop of lupins was to increase the nitrogen status of the plots, although early in the season the efficiency of nitrogen use was also improved. A dry finish to the season turned a statistically non-significant ripping x nitrogen x species interaction for tops growth into a significant negative interaction for grain yield.</jats:p>

Journal

Australian Journal of Experimental AgricultureCrossRef

Published: Jan 1, 1986

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