Even if enough Fe is in the soil, deficiency can occur under the following conditions: poorly drained soil, high Ca, high Mn, high pH, high P, high heavy metals, oxygen deficiency. Deficiency symptoms General: Yellow or white areas on youngest leaves. Older leaves remain green.
Bt corn is a variant of maize that has been genetically altered to express one or more proteins from the bacteria Bacillus thuringiensis. The protein is poisonous to certain insect pests and is widely used in organic gardening. The European corn borer causes about a billion dollars in damage to corn crops each year.
sweet corn will drop and markets will become saturated. Production risks are mostly the same for sweet corn as field corn. However, sweet corn has a more limited root system than field corn. Moisture may need to be carefully monitored. Standard sweet corn has a shelf life of one 1 to 2 days without refrigeration. The genetically modified varieties have a longer life of up to two weeks. There is a high risk of spoilage involved with sweet corn