ASHS Press Releases

American Society for Horticultural Science

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Ten-year study finds three standouts for weed suppression, increased crop yields

A study of seven native plants used as cover crops in strawberry production found that rotation with cover crops and continuous cultivation before planting strawberry generally reduced weed populations and increased strawberry plant density and yield compared with plots of continuous strawberry planting. Sorghum Sudangrass, switchgrass, and big bluestem were recommended as superior cover crops for use in rotation with strawberry as a sustainable production method.

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Study suggests reevaluating timing of nitrogen applications

Researchers studied nitrogen (N) uptake potential, use, and plant metabolic response in a climate-controlled environment by evaluating responses of cool-season turfgrass species to variable N rates and temperature regimens. Study results indicated that N uptake capacity is greatly reduced as average daily temperatures approach 0 °C. The study recommends that nitrogen application rates should be adjusted downward to maximize uptake efficiency in cold temperatures.

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Enhanced seasonal production methods on the horizon for popular fruit

Researchers investigated the flowering characteristics and canopy composition of yellow pitaya in subtropical Taiwan. The study reported on the relative position where the floral buds emerged on shoots at different ages within the canopy, and compared fruit size and quality during different seasons. The researchers suggested ways to increase winter fruit production by enhancing growth of the current year's new shoots through canopy management, and increasing the size of summer fruit through recommended practices.

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Gravity model helps researchers recommend marketing strategies

A study of the U.S. nursery trade used augmented gravity models to investigate the primary factors affecting large and small nurseries. Data showed that the impact of distance on trade value was different between large nurseries and small nurseries, and indicated that the impact of distance has decreased over time. The authors recommended that small nurseries should target wholesale market channels, while large nurseries should target retail channels to increase trade value.

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