ASHS Press Releases

American Society for Horticultural Science

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ASHS Press Releases
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CT Systems Promising for Central Valley Tomato Industry

Conservation Tillage Systems Contribute to California's Flourishing Tomato ProductionTwelve years of research yielded a report on advances in conservation tillage (CT) systems for tomato processing in California's Central Valley and documented the history of technological developments in the region. The report includes pertinent information on opportunities and barriers for further adoption of CT for tomatoes. The authors project that if yield performance and bottom-line profitability can be maintained, CT systems will become increasingly popular among tomato producers in the Central Valley region.

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New plant palate possible with irrigation systems

Irrigation Key to Plant Diversity, Survival on Green RoofsNineteen species and cultivars of succulents, grasses, and forbs were evaluated under seasonal irrigated and non-irrigated conditions on experimental green roofs in Alabama. Only succulents like stonecrops survived without irrigation. The experiments showed that irrigated experimental green roofs had significantly lower summer substrate temperatures, and many plants survived both winter and summer under irrigated conditions. The study recommends irrigation for extensive green roofs to increase plant options.

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Study examines relationship between youth asthma rates and tree cover, vegetation in Texas

Scientists compared vegetation rates and asthma rates in metropolitan statistical areas (MSAs) of Texas to determine if childhood asthma rates were related to tree cover and vegetation. Asthma rates for each MSA were mapped and compared to vegetation maps using geographical mapping software. Results showed no statistically significant relationships between normalized difference vegetation index, canopy cover, and asthma.

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Thinning techniques result in taster preferred wines, increased production costs

Four crop load management treatments were applied to 'Seyval Blanc' grapevines in a winery in upstate New York. Grapes from the treatments were made into wine and rated by a panel of tasters. The researchers' cost/return analysis recommended that crop load reduction techniques may only be economically justified if crop load is extremely high, and/or during poor growing seasons.

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Scientific review answers questions about use of best management practices

Scientists reviewed the national literature regarding management of urban landscape fertilization to protect water quality, focusing specifically on fertilization practices during plants' active summer growth period, the time of year when some municipalities and counties have enacted bans on fertilizer use. The reviewers found potential unintended consequences of increased nutrient losses from urban landscapes, particularly turfgrass, when recommended fertilization and irrigation practices are not followed. They recommend that further research be done to demonstrate any potential environmental benefits of fertilizer bans.

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