Deep Placement of K and N Fertilizers to Prevent Late-Season K Deficiencies

Potassium (K) deficiencies are a major problem in cotton production. The adoption of no-till agriculture and the development of higher yielding and faster maturing cultivars of cotton have increased the frequency of these late season K deficiencies. Previous studies often failed to take in to account the placement of K often failed to take into account the fact that cotton shows no preferential root growth towards K. The objective of this research is to investigate K placement, K rate, and N placement on cotton growth and yield.