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Western Crop Management Strategies for Lygus Control

Developing reduced-risk management strategies for Lygus in Western cropping systems to mitigate losses in cotton, alfalfa, and vegetable crops. Collaborative effort involving multiple institutions and researchers. Potential impact on various affected crops.

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Western Crop Management Strategies for Lygus Control

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  1. RAMP Team Collaborators Corbett (Corbett Learning) Dutilleul (McGill) Hutmacher (UC) Jimenez (UC-IPM) Molinar (UC-IPM) Tronstad (UA) Naranjo, Blackmer, Hagler (USDA) Ellsworth, Fournier (UA) Godfrey, Rosenheim (UC-Davis) Parajulee (TX A&M) Goodell (UC-IPM) Bancroft (USDA) Palumbo (UA) Bundy (NMSU) Carriere (UA)

  2. USDA-CSREES, Risk Avoidance & Mitigation Program (RAMP) • $2,500,000 over 4 years • Developing and implementing field and landscape level reduced-risk management strategies for Lygus in Western cropping systems • Scope • 4 Western States, AZ (Lead), CA, NM, TX • 7 Institutions, UA, UC-Davis, UC-IPM, NMSU, TX A&M, USDA-ARS, McGill University • 13 PI’s, many collaborators • Upland & Pima cottons, seed alfalfa, vegetable & vegetable seed crops, eggplant, chiles, guayule, lesquerella, dry beans

  3. Potential Impact • Other affected crops (not in RAMP) • Clover seed, sugarbeets, celery, strawberry, peach, nectarine, pulses, plum, pear, lettuce • AZ no. 1 producers of broccoli & cauliflower seed • 1-2 sprays each year; 10% loss in seed quality • Eggplant losses 3-10% in CA & ca. 1.5 sprays • 1M A of alfalfa grown in CA/AZ • Guayule could increase to as much as 200,000 A • Cotton = $1 billion crop in RAMP states, half of all U.S. production • Old controls: dimethoate (1962), dicrotophos (1964), aldicarb (1970), methamidophos (1972), acephate (1973), oxamyl (1974), pyrethroid (1979)

  4. Lygus No. 1 in AZ CottonSince 1998 $71 / A in foliar insect control since 1998 ($26 / A to Lygus)

  5. Lygus IPM 3 2 1

  6. Yield : Density Relationships Pima & upland cotton Vegetable seed Lesquerella Dry beans Eggplant Guayule Chile

  7. Expand Reduced-Risk Technologies Discovery B. Compatibility with natural enemies

  8. Source-Sink Relationships & Movement Spatial models B. Simulations C. Flight

  9. Grower Educational Products, Processes, Engagement Print / Electronic pubs B. Field days, mtgs, demonstrations C. Interactive training D. Evaluation

  10. Thank You! Cotton Incorporated CA, TX, NM, AZ Cotton Growers & other Commodity Boards Arizona Pest Management Center / UC-IPM Program USDA-ARS / Yulex Corporation

  11. 2nd International Lygus Symposium April 15–19, 2007 Asilomar Conference Center Pacific Grove, CA http://www.cevs.ucdavis.edu/lygussymposium

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