The Influence Of Npk Fertilization Rates On Susceptibility To Powdery Mildew Of Field-Grown Winegrapes

M. Reuveni; A. Naor; R. Reuveni; M. Shimoni; B. Bravdo

doi:10.1300/J065v02n01_05

The Influence Of Npk Fertilization Rates On Susceptibility To Powdery Mildew Of Field-Grown Winegrapes

M. Reuveni, A. Naor, R. Reuveni, M. Shimoni, B. Bravdo

Department of Geography and Environmental Studies

Research output: Contribution to journal › Article › peer-review

Abstract

Field-grown ‘Sauvignon Blanc’ winegrapes fertigated with various concentrations of N:P:K (7:3:7) for four consecutive years (1988-1991) were evaluated for susceptibility to powdery mildew (Uncinuta necator). Vines fertilized with low NPK concentrations were significantly more susceptible to disease than plants fertilized with high levels. The number of powdery mildew-infected clusters and the severity of the infection were much greater on plants fertilized with a low level of NPK (about 50%), as compared to those of the high fertilization levels (9.5%). In addition, total proteins content and ß-1,3-glucanase activity in berries from low NPK-fertil- ized plants was greater than that of the high fertilization level in plants.

Original language	English
Pages (from-to)	31-41
Number of pages	11
Journal	Journal of Small Fruit and Viticulture
Volume	2
Issue number	1
DOIs	https://doi.org/10.1300/J065v02n01_05
State	Published - 12 Jan 1994

Keywords

Disease susceptibility
Powdery mildew
Uncinuta necator
Winegrapes

ASJC Scopus subject areas

Agronomy and Crop Science
General Environmental Science
Horticulture
General Earth and Planetary Sciences

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title = "The Influence Of Npk Fertilization Rates On Susceptibility To Powdery Mildew Of Field-Grown Winegrapes",

abstract = "Field-grown {\textquoteleft}Sauvignon Blanc{\textquoteright} winegrapes fertigated with various concentrations of N:P:K (7:3:7) for four consecutive years (1988-1991) were evaluated for susceptibility to powdery mildew (Uncinuta necator). Vines fertilized with low NPK concentrations were significantly more susceptible to disease than plants fertilized with high levels. The number of powdery mildew-infected clusters and the severity of the infection were much greater on plants fertilized with a low level of NPK (about 50%), as compared to those of the high fertilization levels (9.5%). In addition, total proteins content and {\ss}-1,3-glucanase activity in berries from low NPK-fertil- ized plants was greater than that of the high fertilization level in plants.",

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author = "M. Reuveni and A. Naor and R. Reuveni and M. Shimoni and B. Bravdo",

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AU - Naor, A.

AU - Reuveni, R.

AU - Shimoni, M.

AU - Bravdo, B.

PY - 1994/1/12

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AB - Field-grown ‘Sauvignon Blanc’ winegrapes fertigated with various concentrations of N:P:K (7:3:7) for four consecutive years (1988-1991) were evaluated for susceptibility to powdery mildew (Uncinuta necator). Vines fertilized with low NPK concentrations were significantly more susceptible to disease than plants fertilized with high levels. The number of powdery mildew-infected clusters and the severity of the infection were much greater on plants fertilized with a low level of NPK (about 50%), as compared to those of the high fertilization levels (9.5%). In addition, total proteins content and ß-1,3-glucanase activity in berries from low NPK-fertil- ized plants was greater than that of the high fertilization level in plants.

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The Influence Of Npk Fertilization Rates On Susceptibility To Powdery Mildew Of Field-Grown Winegrapes

Abstract

Keywords

ASJC Scopus subject areas

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