Effect of MACRO-SORB® foliar on Dollar Spot

P. H. Dernoeden, J. M. Krouse, and J. E. Kaminski, University of Maryland, 2001

This study was conducted on a stand of Crenshaw creeping bentgrass on a silt loam soil at College Park, MD. The turf was maintained at 0.6 inches mowing height and was fertilized with 3.0 lb. N/1000 sq. ft. in the autumn of 2000. MACRO-SORB foliar treatments were applied every 2 weeks on 5/8, 5/23, 6/4, 6/18, and 7/2/2001. Disease severity was low from May to mid-July, but became extremely severe thereafter.

 Results from this study show that MACRO-SORB foliar reduced the incidence of dollar spot on creeping bentgrass

Dollar Spot (Sclerotinia homeocarpa) infection centers in creeping bentgrass as influenced by Tx-1, fungicides, and nutrient supplements.

J. Graham Davis & Dr. P. Dernoeden, University of Maryland, 1998.

Iprodione (3 Kg ai/Ha) & Chlorothalonil (10 Kg ai/Ha) were applied on May 6 and June 29, 1998. Propiconazole (0.38 kg ai/Ha) was applied on May 6 & July 2, 1998. MACRO-SORB® foliar (6.4 L product/Ha) was applied every two weeks from May 6 to July 21, 1998. The Tx-1 was applied daily from April 18 to July 29, 1998.

MACRO-SORB foliar reduced the incidence of Dollar Spot on creeping bentgrass

Effect of Tx-1, fungicides, and nutrient supplements on Brown Patch (Rhizoctonia solani).

J. Graham Davis & Dr. P. Dernoeden, University of Maryland, 1998.

Iprodione (3 Kg ai/Ha) & Chlorothalonil (10 Kg ai/Ha) were applied on May 6 and June 29, 1998. Propiconazole (0.38 kg ai/Ha) was applied on May 6 & July 2, 1998. MACRO-SORB® foliar (6.4 L product/Ha) was applied every two weeks from May 6 to July 21, 1998. The Tx-1 was applied daily from April 18 to July 29, 1998.

MACRO-SORB foliar reduced the incidence of Brown Patch on creeping bentgrass