CALIFORNIA LETTUCE RESEARCH BOARD Summary of Research Priorities  (1999 - 2000) ICEBERG LETTUCE PRIORITIES BY RESEARCH AREA DISTRICT "A" (BLYTHE-COACHELLA-IMPERIAL) The following summaries are provided to indicate those issues which were considered to be the highest priorities (> 3 on the basis of 1-5 where 5 is high) for this district. Breeding/Variety Improvement Whiteflies was rated as the highest priority followed by bottom rot, lettuce drop, lettuce infectious yellows/chlorosis, big vein and multiple disease resistance. Disease Management Downy mildew, bottom rot and lettuce drop were rated as the highest priorities followed by big vein,and lettuce infectious yellows/chlorosis. Insect/Nematode Management Whiteflies, beet armyworm, thrips, and the lettuce aphid were rated as the highest priorities followed by the green peach aphid, loopers, and leafminers. Food Safety Manure use was rated as the highest priority followed by processing, and compost use. Weed Management Annual broadteaves were rated as the highest priority followed by annual grasses, perennial grasses, and perennial broadleaves. Environmental/Other Disorders Tipbum was rated as the highest priority followed by rib discoloration, russet spotting, salt injury, and bolting. ICEBERG LETTUCE PRIORITIES BY RESEARCH AREA DISTRICT "B" (OXNARD-SANTA MARIA) The following summaries are provided to indicate those issues which were considered to be the highest priorities (> 3 on the basis of 1-5 where 5 is high) for this district. Breeding/Variety Improvement Downy mildew lettuce drop and multiple disease resistance were rated as the highest priorities followed by corky root , lettuce drop, bottom rot, lettuce mosaic, and leafminers. Disease Management Downy mildew and lettuce drop were rated as the highest priorities followed by corky root, bottom rot, and bacterial leafspot. Insect/Nematode Management The lettuce aphid, green peach aphid, and leafminers were rated as the highest priorities followed by the beet armyworm, and loopers. Food Safety Harvesting and processing were rated as the highest priorities. Weed Management Annual broadleaves were rated as the highest priority. Environmental/Other Disorders Tipbum was rated as the highest priority followed by rib discoloration, russet spotting, and bolting. CALIFORNIA LETTUCE RESEARCH BOARD ICEBERG LETTUCE PRIORITIES BY RESEARCH AREA DISTRICT "C" (SALINAS-WATSONVILLE-SAN JOAQUIN) The following summaries are provided to indicate those issues which were considered to be the highest priorities (> 3 on the basis of 1-5 where 5 is high) for this district. Breeding/Variety Improvement Downy mildew, leafminers, and multiple disease resistance were rated as the highest priorities followed by corky root, anthracnose, bottom rot, and lettuce drop. Disease Management Downy mildew and lettuce drop were rated as the highest priorities followed by corky root, anthracnose, and lettuce mosaic. Insect/Nematode Management The lettuce aphid, leafminers and the green peach aphid were rated as the highest priorities followed by, loopers, the beet armyworm, lygus bug, and thrips. Food Safety Compost use and manure use were rated as the highest priorities followed by harvesting, and processing. Weed Management Annual broadleaves was rated as the highest priority followed by perennial broadleaves. Environmental/Other Disorders Tipburn was rated as the highest priority followed by rib discoloration. CALIFORNIA LETTUCE RESEARCH BOARD LEAF LETTUCE PRIORITIES BY RESEARCH AREA DISTRICT "A" (BLYTHE-COACHELLA-IMPERIAL) The following summaries are provided to indicate those issues which were considered to be the highest priorities (> 3 on the basis of 1-5 where 5 is high) for this district. Breeding/Variety Improvement Whiteflies and multiple disease resistance were rated as the highest priorities followed by downy mildew, lettuce drop, leafminers, lettuce infectious yellows/chlorosis, and bottom rot. Disease Management Downy mildew was rated as the highest priority followed by lettuce drop and big vein. Insect/Nematode Management Thrips, whiteflies, and the lettuce aphid  were rated as the highest priorities followed by the green peach aphid, beet armyworm, loopers, leafminers, and the corn earworm. Food Safety Manure use was rated as the highest priority followed by harvesting, compost use, and processing. Weed Management Annual broadleaves were rated as the highest priority followed by annual grasses, perennial grasses, and perennial broadleaves. Environmental/Other Disorders Tipburn was rated as the highest priority followed by salt injury, bolting, fertilizer injury, and russet spotting. CALIFORNIA LETTUCE RESEARCH BOARD LEAF LETTUCE PRIORITIES BY RESEARCH AREA DISTRICT "B" (OXNARD-SANTA MARIA) The following summaries are provided to indicate those issues which were considered to be the highest priorities (> 3 on the basis of 1-5 where 5 is high) for this district. Breeding/Variety Improvement Downy mildew and corky root were rated as the highest priorities followed by lettuce drop, multiple disease resistance, big vein, leafminers, lettuce mosaic, bottom rot, and root aphid. Disease Management Downy mildew was rated as the highest priority followed by big vein, corky root, lettuce drop, and bottom rot. Insecl/Nematode Management The lettuce aphid, loopers and the green peach aphid were rated as the highest priorities followed by the beet armyworm, leafminers, lygus bug, root aphid, thrips, and the corn earworm. Food Safety Manure use and compost use were rated as the highest priorities. Weed Management Annual broadteaves was rated as the highest priority followed by annual grasses and perennial broadleaves. Environmental/Other Disorders Tipburn was rated as the highest priority followed by bolting, russet spotting, and rib discoloration. CALIFORNIA LETTUCE RESEARCH BOARD LEAF LETTUCE PRIORITIES BY RESEARCH AREA DISTRICT "C" (SALINAS-WATSONVILLE-SAN JOAQUIN) The following summaries are provided to indicate those issues which were considered .to be the highest priorities (> 3 on the basis of 1-5 where 5 is high) for this district. Breeding/Variety Improvement Downy mildew, multiple disease resistance, corky root, and leafminers were rated as the highest priorities followed by lettuce drop, anthracnose, lettuce mosaic, bottom rot, and bacterial leafspot. Disease Management Downy mildew was rated as the highest priority followed by corky root, lettuce drop, anthracnose, bottom rot, and botrytis. Insect/Nematode Management The lettuce aphid, leafminers, and the green peach aphid were rated as the highest priorities followed by, thrips, the beet armyworm, lygus bug, and loopers. Food Safety Manure use was rated as the highest priority followed by compost use, processing, and harvesting. Weed Management Annual broadleaves were rated as the highest priority. Environmental/Other Disorders Tipburn was rated as the highest priority followed by rib discoloration and bolting.