Foliar Boron Application

Apply boron to cotton according to soil test recommendations. However, petiole analysis recommendations will sometimes call for foliar applications of boron either alone or in combination with foliar nitrogen. When petiole tests detect excessive levels of nitrate-nitrogen, application of 0.2 lb. of boron per acre is recommended. Foliar application of boron accelerates translocation of nitrogen compounds, increases protein synthesis and stimulates fruiting. Likewise, when boron is applied in combination with urea nitrogen it hastens the translocation of nitrogen and sugars, improves fruiting, and may make plants less attractive to insects. Note: No more than three successive applications of boron at 0.2 lb./A should be made.

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Prepared by:	C. Owen Plank, Extension Agronomist, - Soil Testing & Plant Analysis; Steve Hodges, Extension Agronomist, - Soils and Fertilizer; Johnny L. Crawford, Extension Agronomist, - Cotton.
University of Georgia Extension Service

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