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American Society for Horticultural Science

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‘CaroTex-312', New Habanero-type Pepper Introduced

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Virus-resistant hybrid features high yields, disease-resistant attributes

Researchers have introduced 'CaroTex-312', a new high-yielding, orange-fruited, Habanero-type, F1 hybrid pepper. The yield attributes of 'CaroTex-312', particularly its potential for producing high early yields, should be especially appealing to growers trying to widen their marketing window. The report also suggested that the new cultivar has several potentially useful disease-resistance attributes.

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New Research Informs California Strawberry Production Practices

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Study of crop and soil nitrogen dynamics results in valuable recommendations for growers

Scientists monitored fertilization and irrigation management practices in 26 fall-planted annual strawberry fields in California. Controlled-release fertilizer rate trials indicated that routine use of high CRF rates was not an efficient practice; the researchers suggested that reducing CRF rates, particularly in heavier textured soils that are less easily leached, could substantially improve nitrogen use efficiency. The report includes several other recommendations for improving nitrogen management in annual strawberry production systems.

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Vetch Cover Crop, Fertilizer Practices Recommended for Organic Zucchini

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Conservation tillage using roller-crimper and green manure improves zucchini yield, quality

Researchers tested the effects of vetch residue management strategies incorporating green manure using a roller-crimper and different organic fertilizers on organic zucchini yield and quality. When averaged over 2 years of the experiment, marketable zucchini yield increased by 15.2% and 38% with the roller-crimper, mulch, and green manure plow-down, respectively. The findings suggest that effective vetch cover crop management and the application of organic fertilizers can improve yield and quality of organically managed zucchini.

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New Native Shrubs Show Promise for Landscape, Nursery Industries

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Propagation study shows novel native species have potential as wholesale nursery additions

Scientists studied softwood stem cutting propagation of four underused shrub species native to the northeastern United States (Ceanothus americanus, Corylus cornuta, Lonicera canadensis, and Viburnum acerifolium). The results indicated that Corylus cornuta and Viburnum acerifolium could be propagated for consideration as commercial crops for wholesale nurseries looking for new native shrubs, and that all four of the species have the potential to be viable commercial crops for nurseries that specialize in native plants.

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Researchers Test Effects of LEDs on Leaf Lettuce

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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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Sensors Allow for Efficient Irrigation, Give Growers More Control Over Plant Growth

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Study of Hibiscus acetosella recommends sensor-controlled irrigation systems for commercial growers

A study reported on the growth of Hibiscus acetosella 'Panama Red' in response to various volumetric water content thresholds. Experiments were performed in a greenhouse and on outdoor nursery pads. In all studies, increased irrigation volume led to increased growth; plant height also increased with increasing water content threshold in all studies. Results of the experiments indicated that sensor-controlled irrigation is feasible, and that water content thresholds can be adjusted to control plant growth.

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