String beans are harvested as snap (bush) or green (pole or climbers) beans. Bush beans are non-climbing plants while pole beans are staked, trained, and or with trellis.
Root rot organisms and
bacterial diseases often build-up in soil when snap beans are planted repeatedly in the same field. Crop rotation is necessary to limit disease. Corn and other small grains are good rotation crops (Larson; Mossler; Nesheim, 1997).
Fields should be well-aerated and well-drained. Populations of pathogens and pests build-up quickly, in poorly drained soil. Practice shallow tillage prior to flowering to prevent damage to roots and plant collars. Damaged ground plant parts encourage soil borne diseases (Pernezny, 1997).
To control white mold, the planting distance of snap beans should be closer in between rows and wider spacing in between hills (Hochmuth; Cordasco, 1997).
Plant seeds that are found to be resistant to soil borne pathogens. Healthy plants are less likely to be affected by diseases and attacked by pests. Excess N levels make the plants susceptible to bacterial disease and lack of soil nutrients make the plants susceptible to Alternaria leaf spot.
When diseases are observed in the field, workers should not move within fields when plants are wet. Disease organisms spread relatively fast when there is moisture on the leaves (Pernezny, 1997).
OISAT Field Guides
Field Guide to Non- chemical Pest Management in String bean Production download (762 kb)
- CABI. (2000): Crop protection compendium. Global module, 2nd edition. CABI Publishing, Wallingford, UK.
- Hochmuth, G.; Cordasco, K. (1997): A Summary of N, P, and K Research with Snapbean in Florida. Institute of Food and Agricultural Sciences. University of Florida
- Hodges, L. (1997): Basic cultural practices for commercial production of green (Snap) beans. Extension Vegetable Specialist, Cooperative Extension. University of Nebraska.
- Larson, B.; Mossler, M.; & Nesheim, ON. (1997): Florida Crop/Pest Management Profiles: Snap Beans. Institute of Food and Agricultural Sciences. University of Florida http://edis.ifas.ufl.edu/pdffiles/PI/PI03200.pdf
- Pernezny, K. (1997): Disease Control for Florida Snap Beans. Institute of Food and Agricultural Sciences. University of Florida