Location: Horticultural Crops Research2011 Annual Report
1a. Objectives (from AD-416)
Evaluate various fungicides, insecticides, and herbicides for phytotoxicity and/or efficacy on floral and nursery crop plants in support of label expansion through the IR-4 regional project.
1b. Approach (from AD-416)
Selected floral and nursery crop species will be grown in the greenhouse, ground beds, or field plantings and treated according to specific protocols (timing, concentrations) with selected fungicides, insecticides, or herbicides. In some cases, chemicals will be tested for efficacy, but mostly they will be tested on plants for phytotoxicity. Data will be submitted for inclusion in the IR-4 Minor Use Testing Program. Replacing 0500-00007-043-00D (10/99). Replacing 0500-00007-056-00D (10/04) and 0500-00007-071-00D (11/2005). Replacing 0500-00007-087-00D (09/2010).
3. Progress Report
Projects were conducted to test for phytotoxic effects of various chemicals on nursery crops in Corvallis, Oregon. Tests were run on various ornamental plants using the IR-4 protocols wherein chemicals are applied up to 4X rates in four types of planting regimes: greenhouse beds, greenhouse pots, field beds, and field pots. In addition, we conducted efficacy trials to test efficacy of different fungicides for control of Pythium species accusing damping off of Douglas fir seedlings. The results of these tests were reported to the IR-4 project at Rutgers University and are forwarded to the product manufacturer to be used in their request to expand the label to include the tested ornamental plants, eventually, with label expansion, growers be should able to legally use these chemicals on ornamental nursery crops.