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The effect of B at different N levels on the hollow stem disorder in broccoli (Brassica oleracea var. Italica) was studied at two locations in Ontario which varied markedly in soil B. Soil and foliar applications of B significantly enhanced head B levels. Hollow stem was not related to tissue or soil B. Premium Crop broccoli grown in the absence of B in the greenhouse showed only initial signs of hollow stem which was alleviated by adding B.Key words: Nitrogen, boron, Brassica oleracea var. Italica, broccoli, hollow stem
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Shattuck et al. (1987) studied this question.
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