Tomato Research

Is it Hungry? Or Sick Tomatoes?

How to tell a nutrient deficiency from a disease Is it Fusarium on your tomato plants or is it a nutrient deficiency? Sometimes it is hard to tell. In tomatoes, growers can mistake the yellowing of older leaves as a Fusarium problem when it could be caused by a nitrogen deficiency. Nutrient deficiencies, explains Stephen Reiners, an associate professor in the Department of Horticulture at Cornell University, are often related to soil moisture, the alkaline and acid levels in the soil, temperature of the soil, and other issues. To determine exactly what is going on in the field, however,...

Prevent Blossom End Rot (BER) in Tomatoes, Peppers and Other Vegetables

Provide sufficient water and maximize calcium uptake to reduce blossom end rot in tomatoes, peppers and other vegetables Blossom end rot (BER) causes unsightly and irreparable damage to millions of vegetables each year, resulting in costly post-harvest losses. At first glance, it is easy to conclude that this disorder is some type of fungi or bacteria, but the real culprit is lack of calcium. Calcium is a building nutrient for vegetables and other plants; it links pectins and other structural compounds together for cell wall formation. Root damage, improper irrigation practices, extreme temperature variations, and highly acidic or alkaline...
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