Relationships among pruning time response, symptoms attributed to grape bud mite, and temporary early season boron deficiency in grapes

Martin M. Barnes

Hilgardia, 1958, vol. 28, issue 7

Abstract: In studies over a five-year period, the development of abnormal growth formerly included under “grape bud mite injury,” was found to be correlated with the effects of pruning time upon time of leafing of spurpruned vines. Pruning times (e.g., early January) that resulted in early leafing were followed by abnormal growth in early season and resulted in a 39 per cent reduction in yield over a five-year period. The effect of time of pruning upon abnormal growth occurs in the absence of bud mites, a bud-inhabiting strain of Eriophyes vitis (Pgst.). Pruning times (e.g., late March) that resulted in late leafing were followed by virtually normal growth and normal yields. Such pruning-time responses have been observed in Mataro, Muscat of Alexandria, and Malaga grape vineyards subject to abnormal growth.

Keywords: Crop; Production/Industries (search for similar items in EconPapers)
Date: 1958
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