Effect of nitrogen on growth, quality and nutrient uptake of cabbages grown in sand culture
1989
Huett, D.O. (New South Wales Agriculture and Fisheries, Alstonville (Australia). Tropical Fruit Research Station) | Dettman, E.B. (New South Wales Agriculture and Fisheries, Wollongbar (Australia). North Coast Agricultural Inst.)
In outdoor lysimeter experiments, a gamma cubic response surface model fitted actual growth and nutrient uptake data quite precisely. This model was used to derive the predicted plant growth and nutrient uptake rates. It was concluded that on low fertility soils, in order to achieve optimum nutrition and hence maximum growth rates and quality of cabbages under field conditions, the application rates of N and K fertilisers need to be flexible to meet the high nutrient demand which occurs after head formation and before final harvest.
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