Evaluation of biological control agents for managing squash powdery mildew under greenhouse conditions

“An evaluation of biological and abiotic controls for grapevine powdery mildew. 2. Vineyard trials”

• I wish I could say that, because we are already familiar with the materials & the methods, we are jumping right into the results. But the authors conduct, once again, not one but 3 experiments: 1) In the first experiment (2000-2001 season), they evaluate the products that showed encouraging results in the greenhouse, at the same concentrations. 2) In the second experiment (2001-2002 season), ...

evaluation of some trichoderma isolates for biological control of potato wilt disease (fusarium oxysporum) under laboratory and greenhouse conditions

biological efficacy of trichoderma species may differ due to variations in ecosystems. this study was conducted to assess the biocontrol efficacy of some native trichoderma isolates against fusarium oxysporum, an important causal agent of potato wilt disease under laboratory and greenhouse conditions in shahrood agricultural research center, shahrood, iran during 2006-2007. fourteen isolates we...

Powdery mildew of soybeans.

Management of Powdery Mildew in Squash by Plant and Alga Extract Biopesticides

Although many fungicides are registered for use to control powdery mildew on cucurbits, management of resistance to fungicides in pathogen populations still remains a major challenge. Two biopesticides Regalia SC and HMO 736 were evaluated in the greenhouse and field for their efficacy against powdery mildew in squash. In greenhouses, Regalia SC alone significantly (P < 0.05) reduced powdery mi...

Infestation of Transgenic Powdery Mildew-Resistant Wheat by Naturally Occurring Insect Herbivores under Different Environmental Conditions

A concern associated with the growing of genetically modified (GM) crops is that they could adversely affect non-target organisms. We assessed the impact of several transgenic powdery mildew-resistant spring wheat lines on insect herbivores. The GM lines carried either the Pm3b gene from hexaploid wheat, which confers race-specific resistance to powdery mildew, or the less specific anti-fungal ...