Preliminary studies of different composts that could impact black raspberry production and health benefits
2016
The black raspberry (Rubus occidentalis L.) is native to parts of the eastern and midwestern United States (USA) and eastern Canada, while the western North American black raspberry (R. leucodermis Douglas ex Torr. & A. Gray) is native to the western coast of the USA and Canada. Black raspberries contain many compounds that have been shown to inhibit carcinogenic induced cancer in rats. Increasing the antioxidants or oxygen radical absorbance capacity (ORAC) in black raspberry fruit could increase their anticancer capabilities. The production of fresh black raspberries in Ohio can be enhanced with the incorporation of manures and composts prior to planting which can increase plant vigor, berry size and yields. Producing healthy plants can provide some resistance to insect, disease and winter damage. In this report the black raspberry cultivar 'Jewel' was subjected to studies using different composts to amend the soil and examine nutrient uptake into the leaves and fruit. In the greenhouse composted yard waste (CYW) increased the soil cation exchange capacity (CEC), phosphorus (P) and magnesium (Mg). In the field CYW increased the soil CEC, pH and % organic matter. However, fruit elemental content varied from year to year. In a third study using biosolids and different vermicomposts, both major and minor elements in the leaves were affected.
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