February 2014

Aspire® Cotton Boron Study


Evaluate the yield response of cotton to preplant applications of different potassium (K) and boron (B) sources. [1] MOP (0-0-60), [2] MOP + B blend, [3] Aspire® (0-0-58-0.5B).

Compare the yield response of cotton with different preplant K and B sources plus an additional foliar B application at early bloom. [1] MOP + B blend with foliar compared to [2] Aspire® with foliar B.


  • Boron deficiency in cotton may cause a distorted, stunted terminal, abnormal uppermost leaves and aborted flowers (Figure A).

  • Soil applications of B are traditionally made with potassium prior to planting and/or as a foliar application at early bloom.

  • Aspire® with Boron nourishes plants at the root level so nutrients are available when and where plants need them.


Locations and Crop Management:

Crop: Cotton (Gossypium hirsutum L.)

Year: 2013

Locations: 6 trials across cotton growing regions of the U.S. (AL, GA,LA, MS, SC, TX) 

Data Source: Field studies conducted by third-party, independent researchers.

Experimental Design: Small-plot RCBD with 4 replications.

Cropping Conditions: All trials conformed to local cropping practices.

K Rate: 120 lbs K₂O/ac

B Rate:

Preplant: MOP + B blend (1 lb B/ac)

Preplant: Aspire® (1 lb B/ac)

Preplant + Foliar: MOP + B blend (1 lb B/ac) + early bloom: (0.5 lb B/ac)

Preplant + Foliar: Aspire® (1 lb B/ac) + early bloom: (0.5 lb B/ac)


Cotton Yield by Treatment


  • Aspire® yielded higher in both preplant and preplant + foliar applications. Yields were higher with 1.5 lbs B/ac compared to 1 lb B/ac.

  • A preplant application of Aspire® (1 lb B/ac) outyielded an MOP + B blend (1 lb B/ac) by 22 lbs lint/ac and MOP by 64 lbs lint/ac.

  • The preplant Aspire® application (1 lb B/ac) with foliar application (0.5 lb B/ac) provided an additional 26 lbs lint/ac over the comparable MOP + B blend (1 lb B/ac) with foliar application (0.5 lb B/ac).

  • The higher yields with Aspire® compared to other treatments demonstrate the advantages of uniform nutrient distribution from Nutriform® technology.

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Individual results may vary, and performance may vary from location to location and from year to year. This result may not be an indicator of results you may obtain as local growing, soil and weather conditions may vary. Growers should evaluate data from multiple locations and years whenever possible.

WARNING: Contains boron. Use of boron may result in crop injury. DO NOT place this product in direct contact with the seed.