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Farmscaping to Enhance Biological Control

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Farmscaping to Enhance Biological Control FARMSCAPING TO ENHANCE BIOLOGICAL CONTROL PEST MANAGEMENT SYSTEMS GUIDE www.attra.org ATTRA is the national sustainable agriculture information center funded by the USDA’s Rural Business—Cooperative Service. for your valuable feedback! valuable your for by Rex Dufour Abstract: This publication NCAT Agriculture Specialist contains information about Thank YouThank You YouThank Thank Thank You Thank Thank YouThank You YouThank Thank December 2000 increasing and managing biodiversity on a farm to favor beneficial organisms, with emphasis on beneficial insects. The types of information farmscapers need to consider is outlined and emphasized. Appendices have information about various types and examples of successful “farmscaping” (manipulations of the agricultural ecosystem), plants that attract beneficials, pests and their predators, seed blends to attract beneficial insects, examples of farmscaping, hedgerow establishment and maintenance budgets, and a sample flowering Hedgerow of insectary plants at Fong Farms Ltd. period table. in Woodland, CA. CONTENTS Introduction.............................................. 2 Useful Contacts ...................................... 14 Rex Dufour Farmscape Planning ................................. 2 Additional Reading ................................. 16 NCAT/ATTRA Other Considerations .............................. 4 Appendix A: Plants that Attract Beneficials PO Box 3657 Weather ..................................................... 4 Appendix B: Pests and Associated Beneficial Fayetteville, AR 72702 Perennial vs. Annual ................................. 4 Insects Healthy Soil Ecology ................................ 5 Appendix C: Seed Blends, Plants and Sprays to Insectary Plant Characteristics ............ 5 Attract Beneficial Insects Mulches & Trap Crops............................ 7 Appendix D: Examples of Farmscaping Farmscaping for Birds and Bats ............. 7 Appendix E: Hedgerow Installation and Bat Housing .............................................. 8 Maintenance Cost Estimates A Recap: Steps to Farmscaping .............. 9 Appendix F: Sample Flowering Period Chart Federal Cost Share Programs ................ 9 Appendix G: Farmscaping Practices Defined References ............................................... 13 ATTRA is a project of the National Center for Appropriate Technology ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ Introduction ○○○○○ “Farmscaping” is a whole-farm, ecological knowledge and management skill on the part approach to pest management. It can be of the grower than conventional pest Feedback defined as the use of hedgerows, insectary management. The investment in knowledge plants, cover crops, and water reservoirs to and management may yield such benefits as: attract and support populations of beneficial organisms such as insects, bats, and birds of ♦ A reduction in pesticide use prey. ♦ Savings in pesticide costs 1. What information do you think is missing from this publication? ♦ Reduced risk of chemical residues on farm In some respects, beneficial organisms should products be considered—and managed as—mini- ♦ A safer farm environment and more on- livestock. The larger varieties oflivestock farm wildlife. are healthier and reproduce more readily when provided an adequate and nutritious diet. Likewise, “mini-livestock” Beneficial insects should be viewed as mini- require adequate supplies of livestock. They will be healthier, reproduce more nectar, pollen, and readily, and be more effective biocontrols when 2. Do you know someone implementing farmscaping techniques on their herbivorous insects and mites provided habitat with an adequate and easily farm? Can you pass on their address and phone number? as food to sustain and available diet of nectar, pollen, and herbivorous increase their populations. insects and mites. The best source of these foods is flowering plants. However, farmscaping is not a magical cure for Flowering plants are particularly important to pest problems. It is simply an ecological adults of the wasp and fly families, which approach to pest management that can be an require nectar and pollen sources in order to integral component of a biointensive integrated reproduce the immature larval stages that pest management (IPM) program. parasitize or prey on insect pests. 3. Do you know of farmscaping-related research that would improve this The use of farmscaping to increase beneficial publication? However, using a random selection of organism habitat must be understood and ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ flowering plants to increase the biodiversity of practiced within the context of overall farm a farm may favor pest populations over management goals. For example, when beneficial organisms. It is important to identify considering planting a perennial hedgerow the those plants, planting situations, and producer should evaluate the various costs and management practices that best support benefits likely to be associated with a populations of beneficial organisms. hedgerow. Growers with farmscaping experience will likely be the best source for this Farmscaping, like other components of kind of information. sustainable agriculture, requires more 4. Do you know of a good farmscaping-related website not listed in this publication? Farmscape Planning ○○○○○ There are probably as many approaches to ♦ The farmer can modify the system after farmscaping as there are farmers. Some observing the results. growers, after observing a cover crop harboring beneficial insects, plant strips of it in Problems arise when the beneficial insect or around their crop fields. The advantages of habitat, unbeknownst to the grower, also this kind of approach are: harbors pest species. (For a more detailed ♦ It is simple to implement discussion of this topic, visit: http:// ♦ It is often very effective www.lib.uconn.edu/CANR/ces/ipm/ ATTRA// Farmscaping to Enhance Biological Control Page 2 general/htms/cvercrop.htm). In other ! What are the primary food sources, instances the beneficials may not exist in habitat, and other ecological numbers sufficient to control pest populations requirements of both pests and during the time when pest populations beneficials? (Where does the pest infest generally increase. Predator/prey population the field from, how is it attracted to the balances are influenced by the timing of crop, and how does it develop in the availability of nectar, pollen and alternate crop? Where do the beneficials come The electronic version of Farmscaping to Enhance prey/hosts for the beneficials. Therefore, there from, how are they attracted to the Biological Control is located at: is a strong argument to be made for having crop, and how do they develop in the HTML year-round beneficial organism habitat and crop?) http://www.attra.ncat.org/attra-pub/farmscape.html food sources. The “beneficial habitat season” PDF may be extended by adding plants that bloom 2. Timing http://www.attra.ncat.org/attra-pub/PDF/farmscaping.pdf sequentially throughout the growing season or the whole year. ! When do pest populations generally first appear and when do these populations become economically When Do They Bloom? damaging? The ATTRA Phenology Resource List ! When do the most important predators provides additional resources about and parasites of the pest appear? time-of-bloom at: ! When do food sources (nectar, pollen, http://www.attra.org/attra-pub/phenology.html alternate hosts, and prey) for beneficials first appear? How long do they last? A sample blooming chart for California plants can be found in Appendix F. ! What native annuals and perennials can provide habitat? When contemplating farmscaping, 3. Identification of Strategies consideration should be given to the cost of developing beneficial habitat and maintenance ! Reduction of pest habitat (i.e., reduce/ of the habitat as well as the cost of any land alter overwintering pest sites, or that might be taken out of production. In any reduce/alter locations from which pest case, a more systematic, research-oriented invades.) approach to farmscaping can often help the grower avoid mistakes and develop desirable ! Augmentation of beneficial habitat by Rex Dufour habitats that match the needs of the beneficial (insectary establishment; consider both NCAT Agriculture Specialist organisms as well as the pest management perennial options—permanent December 2000 needs of the farm. plantings such as hedgerows—and annual options.) The following are key considerations in crafting a farmscaping plan: ! Trap Crops—planted specifically to be The ATTRA Project is operated by the National Center for Appropriate Technology under a more attractive to the pest than is the grant from the Rural Busines—Cooperative Service, U.S. Department of Agriculture. These 1. Ecology of Pests and Beneficials crop to be harvested. This is due to the organizations do not recommend or endorse products, companies, or individuals. ATTRA is timing of the appearance of the trap located in the Ozark Mountains at the University of Arkansas in Fayetteville at P.O. Box 3657, ! What are the most important crop or the fact that it is physiologically Fayetteville, AR 72702. ATTRA staff members prefer to receive requests for information about (economic) pests that require more attractive to the insect. (Please see sustainable agriculture via the toll-free number 800-346-9140. management? appendices D and G for descriptions of planting systems that can be used in ! What are the most important predators farmscaping.) and parasites of the pest?
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