Search Results

You are looking at 91 - 100 of 4,868 items for :

  • Refine by Access: All x
Clear All
Free access

J. D. Norton

The watermelon has been cultivated in China for more than 1000 years. During most of this period, indigenous cultivars and traditional cultivation practices were used. In the last decade, many improved cultivars have been developed and the use of plastic mulch and other improved cultural practices have been utilized. China has become the largest producer of watermelons with the production area increasing to 1 million hectares and 15 million tons in 1988.

Watermelons are grown in almost all production areas of China. The production areas are: the Northwest inland dry region, the North China plain region, and the Changjiang (Yantzi river) valley rainy region. Severe injury and crop losses occur from Fusarium wilt, (Fusarium oxysporium v. niveum) anthracnose (Colletotrichum laginarium), and gummy stem blight (Didymella bryonaea). Cooperative breeding and developmental work was initiated between the Dept. of Horticulture, Auburn University and the Hubei Academy of Aggricultural Science and the Hubei Agricultural College, Jing Zhou to evaluate cultivar and germplasm and to develop multiple disease resistant melons that produce high yields of excellent quality fruit.

Full access

Cheryl R. Boyer, Janet C. Cole, and Mark E. Payton

anthracnose symptoms. Mahoney and Tattar (1980a , b) first identified anthracnose incited by C. gloeosporioides on field- and container-grown wintercreeper euonymus from several New England nurseries in 1978. Typical disease symptoms included leaf and

Free access

Christopher B. Watkins

inoculation of the product with the pathogen and results are not always consistent even within a product. In strawberry, for example, disease incidence was lower at low 1-MCP concentrations and increased at higher 1-MCP concentrations ( Jiang et al., 2001

Free access

Bruce I. Reisch, R. Stephen Luce, and Anna Katharine Mansfield

‘Arandell’ is a disease-resistant red wine grape cultivar that ripens midseason. Only minimal efforts are needed to control powdery mildew ( Erysiphe necator Schw.), downy mildew ( Plasmopara viticola Berl. & de Toni), and Botrytis bunch rot

Free access

Vincent V. Michel, Nicole Debrunner, and Xavier Simonnet

) ( Debrunner et al., 2000 ), an important fungal disease of st. john’s wort ( Crompton et al., 1988 ). Reports on the occurrence of the disease in several European countries ( Bomme, 1997 ; Debrunner et al., 2000 ; Schwarczinger and Vajna, 1998 ) can be

Free access

Ute Albrecht, David G. Hall, and Kim D. Bowman

known as citrus greening or yellow shoot disease, is considered the most destructive disease of citrus at present and threatens citrus production in all affected areas. Fruit on HLB affected trees remain small, often become misshapen, may develop an

Open access

Liming Chen, Matthew Wallhead, Michael Reding, Leona Horst, and Heping Zhu

In commercial fruit production in the midwestern United States, producers usually employ integrated pest management (IPM) to control a variety of insect and disease pests ( Beckerman, 2018 ). IPM tactics include removing leaf litter and pruning out

Open access

Derald Harp, Gaye Hammond, David C. Zlesak, Greg Church, Mark Chamblee, and Steve George

of more than 3.5 million acre-feet per year ( Texas Water Development Board, 2017 ). The use of pesticides is decreasing as customers seek insect and disease control methods with minimal environmental impact ( Zlesak, 2006 ). To address these

Free access

Cecilia E. McGregor, Douglas W. Miano, Don R. LaBonte, Mary Hoy, Chris A. Clark, and Guilherme J.M. Rosa

%) takes place in developing countries where it is mainly grown by small/subsistence farmers. Stem cuttings provide a convenient way to propagate sweetpotato, but also contribute to the spread of diseases ( Clark et al., 1997 ; Salazar and Fuentes, 2000

Free access

Gregory M. Peck, Candace N. DeLong, Leon D. Combs, and Keith S. Yoder

immense insect, disease, and weed pressure experienced in this region ( Cromwell et al., 2011 ; Peck et al., 2010 ; Williams et al., 2016 ). Additionally, crop load management options are limited in organic production because the USDA-NOP prohibits the