Two-Spotted Spider Mite Control on Beans With a Soil-Applied Systemic Insecticide, 1977

Kimberly, Idaho. Temik 15% granules were applied at planting May 27, 1977, and sidedressed 20 days after planting. At planting the granules were spread with a Gandy Bander in a 7-inch (17.8 cm) band behind a cultivator sweep. The seed was planted 1 inch (2.5 cm) deep and covered with a soil and Temik mixture by means of a disc hiller. The sidedress application was applied with a driven granular applicator in a band 3 inches (7.6 cm) to the side of the plant 2-3 inches (5-7.5 cm) deep, and on the water side of the furrow. Each plot was 6 rows wide and 25 ft (7.5 m) long. Each treatment level and an untreated check were replicated 4 times in a randomized complete block design. The motile forms of the mite were counted in 225 mm2 areas of bean leaves. Four counts per plot per sampling date were taken for a total of 900 mm2 per plot per sampling date. The plants in 10 ft (3 m) of the center two plot rows were hand pulled, placed in burlap bags, and dried. The beans were threshed and debris and dirt removed by hand. Yield weights were recorded as grams of beans per 20 ft (50 cm) of row and converted to cwt/A (kg/ha).