Eggplant Response to Topical and PrecisionDirected Applications of

OBJECTIVE • Determine the Tolerance of Eggplant to various rates and application methods of

Treatments Over-the-Top and Directed • 0. 5 ounces Sandea per Acre • 1. 0

Application Information • • Plots = 6 ft. by 15 ft. 9 to 11

TABLE 1. TREATMENT PERCENT INJURY MAY 4 TH MAY 9 TH SANDEA – 0.

Conclusions • Eggplants do not have the tolerance of tomatoes or many cucurbits and

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Eggplant Response to Topical and Precision-Directed Applications of Sandea (Halosulfuron) Tim Flanders And Stanley Culpepper The University of Georgia

OBJECTIVE • Determine the Tolerance of Eggplant to various rates and application methods of Sandea Herbicide

Treatments Over-the-Top and Directed • 0. 5 ounces Sandea per Acre • 1. 0 ounces per Acre • 4 replications per treatment * All Treatments Contained 0. 25% NIS by Volume

Application Information • • Plots = 6 ft. by 15 ft. 9 to 11 leaf stage, 5 week old plants 14. 8 GPA spray solution Directed treatments precision applied to lower 25% of plant canopy • Damaged ratings taken 7 and 12 DAT

TABLE 1. TREATMENT PERCENT INJURY MAY 4 TH MAY 9 TH SANDEA – 0. 5 OZ/AC POST OVER THE TOP 48. 8 A 51. 3 B SANDEA – 1 OZ/AC POST OVER THE TOP 53. 5 A 66. 3 A SANDEA – 0. 5 OZ/AC PRECISION-DIRECTED 16. 8 B 21. 3 C SANDEA – 1 OZ/AC PRECISION-DIRECTED 24. 3 B 28. 8 C UNTREATED 0. 0 C 0. 0 D LSD (P =. O 5) 11. 43 12. 74

Untreated Check

0. 5 Ounces Over-the-Top Seven DAT

Conclusions • Eggplants do not have the tolerance of tomatoes or many cucurbits and damage from any rate or treatment methods is unacceptable. • More research is needed to determine tolerance when Sandea is used as a soil application between the bed forming and plastic laying operation. • Plasticulture vegetable production will have to be a crop specific systems approach when controlling weeds, nematodes, and soil-borne diseases.