Factors affecting calcium deficiency related disorders in vegetables
2000
Kleemann, M. (Estonian Agricultural Univ., Tartu (Estonia). Institute of Horticulture)
Calcium deficiency is usually related to the inability of the plant to translocate adequate calcium to the affected plant part. Sufficient root growth is essential for uptake of calcium. Maintaining good soil moisture helps promote adequate movement of calcium to the root and into the plant. An abundant supply of N increases the growing rate and high growing rates increase the risk that the tissue content of calcium might fall below the critical level and induces calcium deficiency symptoms on plants. The cations depress Ca uptake and distribution. The anions depress tipburn development on plants. Increasing the level of salinity reduced Ca uptake due to restricted water uptake by high salinity. In the situations of high humidity Ca deficiency injury on plants increased. Increased light period and/or light intensity increases the incidence of Ca deficiency symptoms on plants. Higher temperature results increased level of tipburn injury on plants. Foliar Ca sprays are used to correct deficiencies
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