ASHS Press Releases

American Society for Horticultural Science

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Researchers examine strawberry's wild relative for ways to minimize invasive fungal disease

Scientists studied a group of wild strawberry accessions for resistance to powdery mildew under open-field and high tunnel environments in Florida. Wild accessions, commercial standard cultivars, and susceptible controls were planted in the study. Although results revealed a significant year-three genotype effect, some taxa showed high levels of resistance that were consistent across years. The data showed a high correlation for ratings of powdery mildew between high tunnel and open field for all genotypes.

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Weed mat determined to be more cost effective than hand weeding

Researchers evaluated three weed management practices using two trailing blackberry cultivars in western Oregon. Weed mat was determined to be the treatment best suited to organic production of blackberries. The initial cost of the weed mat was considerably less than the cost of hand weeding during the first 3 years after planting. The yield benefit of weed mat provided enough profit to warrant its use after only one season of fruit production.

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Mixture of blue and red lights recommended to enhance lettuce quality, yield

Scientists determined the effects of blue and red LED ratios on leaf shape, plant growth, and the accumulation of antioxidant phenolic compounds of a red leaf lettuce and a green leaf lettuce cultivar. They determined that red LED light promoted growth and that blue LED light was good for phenolics accumulation rather than growth, thus concluding that a combination of red and blue light is essential for cultivation of leafy vegetables like lettuce.

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Study results may help predict plant responses to light, temperature

Researchers monitored environmental data inside shadehouses with full covering of red, blue, pearl, and black nets in central Florida over 12 months. The report documents the different environmental modifications inside the structures, which will help predict or interpret specific plant responses, including photosynthetically active radiation and air temperatures.

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