AI Article Synopsis
- Cover crops can enhance agroecosystems by reducing soil erosion and improving water infiltration, but their use is limited among raspberry growers in the Pacific Northwest due to concerns about competition for resources and plant-parasitic nematode populations.
- A two-year study on 'Meeker' raspberry fields evaluated the effects of different cover crops and traditional bare soil on nematode populations, raspberry yield, and fruit quality.
- Results showed that alleyway cover crops did not increase nematode densities and did not negatively affect raspberry yield or fruit quality compared to bare soil, suggesting that the benefits of using cover crops may outweigh the risks.
Article Abstract
Cover crops can provide many benefits to agroecosystems, such as lessening soil erosion and increasing water infiltration. However, cover crop use is not common in established red raspberry () fields in the Pacific Northwest. Raspberry growers are concerned about resource competition between the cover crop and raspberry crop, as well as increasing population densities of the plant-parasitic nematode , which has a wide host range and has been shown to reduce raspberry plant vigor and yield. A 2-yr study was conducted in an established 'Meeker' raspberry field in northwest Washington to evaluate the effects of nine alleyway cover crops, mowed weed cover, and the industry standard of bare cultivated soil on population dynamics, raspberry yield, and fruit quality. The host status for of cover crops included in the field experiment, as well as 'Pacific Gold' and 'Ida Gold', was also evaluated in greenhouse experiments. In the field experiment, population densities did not increase in alleyway cover crop roots over time or in alleyway soil surrounding cover crop roots (means range from 0 to 116 /100 g of soil) compared with the bare cultivated control (means range from 2 to 55 /100 g of soil). populations did not increase over time in raspberry grown adjacent to alleyways with cover crops (means range from 1,081 to 6,120 /g of root) compared with those grown adjacent to bare cultivated soil alleyways (means range from 2,391 to 5,536 /g of root). Raspberry grown adjacent to bare cultivated soil did not have significantly higher yield or fruit quality than raspberry grown adjacent to cover crops in either year of the experiment. In the greenhouse assays, 'Norwest 553' wheat and a perennial ryegrass mix were poor hosts for , whereas 'Nora' and 'TAM 606' oat and 'Pacific Gold' and 'Ida Gold' mustard were good hosts. These results support the idea that the potential benefits of alleyway cover crops outweigh the potential risk of increasing population densities and do not compromise raspberry yield or fruit quality.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5770293 | PMC |
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