=VLOOKUP(Lookup_value, Table_array, Col_index_num, Range_lookup)) Lookup_value â The value you want to find in the lookup value column. Lookup_value â The table range containing columns for both the lookup and return values. Col_index_num â The index number for the column containing the return values.
--Ammonium salts have a hypothetical risk of ammonia toxicity. In addition to calcium levels, ammonia and phosphate levels should be monitored. --Potassium salts have a hypothetical risk of hyperkalemia which can cause cardiac arrhythmia.
Ammonium nitrogen absorbed by the root is converted in the roots to amino acids. This occurs because ammonium is actually toxic to the plant, and in order to prevent the ammonium causing problems, it has to be converted to some non-toxic form immediately. In this case it is converted to very simple amino acids.