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.
If its made from Corn Starch, then in the US where 90% of our corn product is Monsanto's poisonous BT Corn, then Maltodextrin is poison!!!! OK Chemist prove me wrong. My hemorrhoids increase to golf ball size (from nothing) and bleed profusely after each bowel movement until the BT Corn poison has left my system.