Influence of Preplant, Split Soil Applied and Foliar Applied Potassium Fertilizer on Yield and Quality of Cotton in Virginia

A. Ozzie Abaye, K. E. Edmisten, G. L. Heuberger, J. C. Maitland, W. B. Wilkinson, J. L. Jones, J. W. Parker


Various studies have demonstrated the importance of potassium fertilization on cotton (Gossypium hirsutum) Yield and fiber quality. Three levels of pre-plant, split soil applied and foliar applied K were compared to a control receiving no K on DPL-50 at two locations in Virginia. Yield, boll counts and HVI quality parameters were measured for each treatment.

Adding K by any method tended to increase lint yield, (P < . 09), and total number of bolls per 15 feet of row (P < .06) compared with the untreated control. Split application of K linearly increased boll numbers per plant (P < .07) and a similar trend was observed for foliar application of KNO3. Fiber quality, particularly fiber length and micronaire were increased (P < .08) by single soil applied K. Although not significant a similar trend was observed for foliar KNO3 treatments. Similar results have been obtained by other researchers.

Reprinted from Proceedings of the 1994 Beltwide Cotton Conferences pg. 1601
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998