Molybdenum Deficiency Symptoms in Cotton
1967
Kallinis, Thomas L. | Vretta-Kouskoleka, Helen
Molybdenum deficiency symptoms were developed in first generation cotton (Gossypium hirsutum, var. Coker) growing in purified nutrient solutions. The first symptoms appeared when the plants were 7 weeks old. The young leaves became chlorotic between the veins, while the old leaves became greasy and swollen between the veins. Cupping of their margins occurred either upward or downward. Addition of Mo in the nutrient solution of the deficient plants corrected all deficiency symptoms and allowed the plants to develop normally again. The Mo content of the leaves exchibiting advanced deficiency symptoms was 1.14 ppm, of leaves exchibiting incipient deficiency symptoms was 1.88 ppm, and of healthy leaves was 2.37 ppm.
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