Effects of Starter Fertilizer Sources on Cotton Seedling Diseases and In-Furrow Fungicide Applications

G. L. Sciumbato and M. W. Ebelhar Plant


 
ABSTRACT

When plots were inoculated with Rhizoctonia solani and Pythium Spp. to simulate severe disease conditions, the use of starter fertilizer significantly reduced seedling stands by 27% 15 days and 29% 30 days after planting. Two nitrogen starter fertilizers were evaluated, ammonium poly phosphate and urea applied infurrow at planting (15 lb/A actual nitrogen). Plots treated with either of the starter fertilizers had similar stands with no significant differences. The use of the in-furrow fungicides Terraclor Super X (12.5 G, 10.0 lb/A), Ridomil PC (11.0 G, 10 lb/A), and Terraclor Super X (12.5 G, 10.0 lb/A) + Temik (15 G, 5 lb/A) significantly improved stands in plots with and without starter fertilizer. However, stands were significantly lower in plots receiving a starter fertilizer and infurrow fungicide over plots receiving an in-furrow fungicide alone. There were no significant differences in seed cotton yield between any of the treatments.



Reprinted from 1992 Proceedings Beltwide Cotton Conferences pg. 199
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998