Disease Management

A comparison of antibiotic susceptibility patterns for Staphylococcus aureus in organic and conventional dairy herds

Mastitis is considered to be the most costly disease affecting the dairy industry with annual losses in the United States exceeding $2 billion (Philpot, 1984). Losses stem from milk discard, drug costs, veterinary care, increased labor, and premature- culling. Staphylococcus aureus is one of the most important pathogens causing intramammary infections in dairy cattle (Gonzalez et al.,1988) and continues to be one of the major causes of mastitis in dairy herds worldwide (Barkema et al. 1998, Gonzalez et al. 1988, Nickerson et al. 1999, Osteras et al. 1999, Sol et al.

A grower-managed biorational program for artichoke pests (BIORAPP) on the north central California coast

A native egg parasite, Trichogramma thalense, was mass-reared in the laboratory and released a maximum of thirteen times against the eggs of the artichoke plume moth (Platyptilia carduidactyla) in three 5-acre biointensive artichoke production fields on the northern Santa Cruz/San Mateo County coast in 1998 and again in 1999-2000.

Evaluation of kaolin-based particle film coatings on insect and disease suppression in apples

The Organic Farming Research Foundation of Santa Cruz, CA generously provided a grant of $3,479 in 1999 to initiate this study at the Southwest Research Center, Mt. Vernon, MO. The 2000 growing season was completed September 28, 2000, and I am pleased to submit this final summary of our results. A proposal for the funding of the second year's research has been submitted to OFRF. The particle film technology tested in this study appears to offer tremendous potential in safely suppressing both insects and disease in Midwestern apple production.

Organic Management of Garden Symphylans (Scutigerella immaculata) in Annual Cropping Systems

The garden symphylan is an increasingly common problem on organic farms. Symphylans have a diverse diet, feeding on decaying organic matter and on the roots of a very wide range of crops and other plants, including many weeds. Heavy symphylan populations can severely stunt, and even kill, most annual

Deploying microbes as a seed treatment for protection against soil-borne plant pathogens

Plant diseases, especially those caused by soil-borne seed infecting pathogens, pose a serious threat to the production of both greenhouse and field crops. Conventional farming operations often use fumigants and chemical seed treatments, which can be harmful to human health and the environment, for controlling seed and seedling pathogens.

Managing indigenous seed-inhabiting microbes for biological control against Fusarium pathogens in corn

Managing indigenous seed-inhabiting microbes for biological control against Fusarium pathogens in corn 
 

Snap Beans with Enhanced Nitrogen-Use Efficiency for Organic Production-Year 2

Snap beans with enhanced nitrogen-use efficiency
for organic production-Year 2

Can Organic Garlic Seed Stock Be Created Disease-free from the Production of Garlic Bulbils?

Can Organic Garlic Seed Stock Be Created Disease-Free From the Production of Garlic Bulbils?

Serious diseases of garlic have been imported from foreign sources and are now widespread within the US and Canada. Stem and Bulb Nematode (Ditylenchus dipsaci) in garlic seed (vegetative reproduction) will infest the soil and is impossible to eradicate using organic approved methods. It is a threat to other crops, including onions, potatoes, alfalfa, and strawberries. Infested land is substantially reduced in value, as the nematode may be transferred on equipment.

Midwest Apple Producers Receive Season-long Mentoring Via Conference Calls

Summary

The Apple Grower Hour

Coordinator: Lisa DiPietro, The Wisconsin Eco Apple Project, University of Wisconsin Center for Integrated Agricultural Systems
Stakeholders: Eastern U.S. and in particular Upper Midwest organic apple producers

Suppression of Pythium damping off with compost and vermicompost

Summary

Investigator: Eric B. Nelson, Dept. of Plant Pathology, Cornell University, Ithaca, New York
Project location: Cornell University

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