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Joseph R. Heckman, Steve Johnston, and Win Cowgill

1 Extension Specialist in Soil Fertility, to whom reprint requests should be addressed; e-mail: . 2 Disease Management in Vegetable Crops. 3 County Agricultural Agent. This research was supported by the New Jersey

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J. Scott Cameron and Peter R. Bristow

108 ORAL SESSION 33 (Abstr. 244–250) Fruit and Nut Crops: Pests and Diseases

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Marianela Ramirez, Marek J. Krasowski, and Judy A. Loo

American beech ( Fagus grandifolia ) trees in the northeastern parts of its range have been devastated by beech bark disease (BBD), an introduced insect–fungus disease complex incited by an initial infestation by the scale insect, Cryptococcus

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Amaya Atucha and Greg Litus

( Patrick, 1955 ; Zhang et al., 2007 ). Biochar additions to soil has shown to affect the severity of soilborne diseases in multiple crops ( Elmer and Pignatello, 2011 ; Graber et al., 2014 ; Jaiswal et al., 2014a ; Jaiswal et al., 2014b ; Matsubara et

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Kendra Baumgartner, Phillip Fujiyoshi, Greg T. Browne, Chuck Leslie, and Daniel A. Kluepfel

Armillaria root disease affects orchards in all Juglans regia (Persian walnut)-growing regions of California ( Gardner and Raabe, 1963 ). The causal agent is Armillaria mellea (Basidiomycota, Physalacriaceae), which attacks walnut and other

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Neel Kamal, Ashish Saxena, Robert L. Steiner, and Christopher S. Cramer

make New Mexico an ideal environment for onion bulb production. However, sporadic periods of rain at the time of maturity aggravate bulb decay because of various diseases ( Corgan, 2002 ). Black mold, caused by Aspergillus niger , is a frequent onion

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M.H. Maletta, W.P. Cowgill Jr., W. Tietjen, S.A. Johnston, and P. Nitzsche

107 POSTER SESSION (Abstr. 646–653) Crop Protection–Diseases

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M.D. Boyette, D.F. Ritchie, S.J. Carballo, S.M. Blankenship, and D.C. Sanders

A significant portion of harvested produce never reaches the consumer due to, postharvest diseases. Various chemicals have been used to reduce the incidence of postharvest diseases. Many of these materials have been removed from the market in recent years due to economic, environmental, or health concerns. Although somewhat limited in the range of diseases controlled, chlorination is effective when combined with proper postharvest handling practices. Additionally, it is a relatively inexpensive postharvest disease control method that poses little threat to health or the environment. The proper use of chlorination in the management of postharvest diseases in fresh fruits and vegetables is discussed.

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Irvin E. Widders

31 ORAL SESSION 4 (Abstr. 024–033) Crop Production–Diseases and Insects

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Shawn A. Mehlenbacher

55 COLLOQUIUM 2 (Abstr. 995-999) Classical and Molecular Approaches to Breeding Horticultural Plants for Disease Resistance