Solar Injury of Raspberry Fruit
| Autor: | A. R. Renquist, H. G. Hughes, M. K. Rogoyski |
|---|---|
| Rok vydání: | 1987 |
| Předmět: | |
| Zdroj: | HortScience. 22:396-397 |
| ISSN: | 2327-9834 0018-5345 |
| DOI: | 10.21273/hortsci.22.3.396 |
| Popis: | Red raspberry (Rubus idaeus L.) is prone to a “white drupelet” disorder on the sun-exposed side of the fruit, largely during those harvest periods when daytime temperatures exceed about 33°C. In mid-August, more than 40% of the fruit were affected. Three types of shade covers (30% and 60% black shade fabric and 25% shade white polyester), placed over raspberry plots for 1 to 3 weeks prior to fruit harvest, reduced the amount of solar-injured fruit from 41% in unshaded plots to between 8% and 16%. Fruit surface temperature was reduced about 4° by both black shade fabrics, but only 1° by the polyester cover. Fans cooled fruit by about 2°, but the reduction in solar injury was less than with shade covers. |
| Databáze: | OpenAIRE |
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