Ammonium Reduction of Calcium and Magnesium Content of Tomato and Sweet Corn Leaf Tissue and Influence on Incidence of Blossom End Rot of Tomato Fruit1
Open Access
- 1 January 1973
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 98 (1) , 86-89
- https://doi.org/10.21273/jashs.98.1.86
Abstract
Fertilization of tomato and sweetcorn seedlings with NH4-N generally resulted in growth reduction as well as reduced contents of Ca and Mg in the tissues to deficient or nearly deficient levels. The effects were more pronounced on tomatoes than on corn. Fertilization of plants, with a combination of NO3 + NH4-N resulted in Ca and Mg levels in the tissue intermediate between that of plants receiving NH4-N or NO3-N. Ammonium N applied during fruiting of tomato plants resulted in rapid development of blossom-end rot of the fruit, probably due to the influence of NH4-N on Ca uptake.Keywords
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