STRATEGIES TO IMPROVE THE EFFICIENCY OF NITROGEN FERTILIZER USE IN THE CULTIVATION OF BRASSICA VEGETABLES

A review is presented of possible strategies to improve the efficiency of nitrogen (N) fertilizer use and reduce losses of N in the cultivation of Brassica vegetables.
Subjects treated include determination of soil mineral N at planting, fertilizer placement and split application, use of aqueous ammonia, foliar application, tissue N analysis, N in crop residues and the use of catch crops.
Amongst others it was concluded that growers must be urged to correct fertilizer applications for soil available N; also placement of fertilizer and, under certain conditions, split application need investigation.
Studies of the root system and modelling of the N cycle in field vegetable production should be encouraged.

Workshop on Ecological Aspects of Vegetable Fertilization in Integrated Crop Production in the Field

A.P. Everaarts

Brassica vegetables, nitrogen fertilizer, reduction of nitrogen losses, soil mineral nitrogen, fertilizer placement, split application, crop residues, catch crops, review

https://doi.org/10.17660/ActaHortic.1993.339.14