Fertishell Our most traditional and long-standing sub-range, consisting of NPKs for foliar application, developed with high-quality raw materials and added value, where the best formulas of all time are maintained while introducing new balances to cover the maximum crop needs. The sources of nitrogen, phosphorus, and potassium provided are specific and optimal for the preparation of foliar application solutions, as well as for their complete absorption through the leaves. Fertishell incorporates conditioners in its formulations that ensure the solution is at an optimal application pH.