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Interpretive Summaries:
1998 - On-Farm Evaluation of the Influence of ESP Potassium Sulfate on Tomato Yield and Quality
1997 - On-farm evaluation of the influence of potassium sulfate on tomato yield and quality
On-Farm Evaluation of the Influence of ESP Potassium Sulfate on Tomato Yield and Quality, 1998
Field research is evaluating tomato response to different rates (0, 80, 120 and 160 lb K2O/A) and weekly applications of ESP K-Sulfate, potassium chloride (KCl) and potassium nitrate KNO3 applied through a drip irrigation system. The objectives are to establish the potential for increased tomato yield and fruit quality using three K sources and to correlate soil tests and plant tissue analysis with tomato yield and quality.
Soil tests in the experimental plots were medium to high in K. Marketable and total large tomato yields were similar for each of the three sources. Marketable fruit yield increased from 2,247 25-lb ctn/A to 2,646 ctn/A with the application of K. Total large fruit yield tended to increase from a control yield of 2,029 ctn/A to 2,440 ctn/A with the 80 lb K2O/A rate. Yield and quality benefits from K in a balanced nutrient management program for tomatoes continues to be evaluated. FL-18F
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