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פותח על ידי קלירמאש פתרונות בע"מ -
Effects of calcium, magnesium and potassium on sweet basil downy mildew (Peronospora belbahrii)
Year:
2021
Source of publication :
Agronomy (Switzerland)
Authors :
אלעד, יגאל
;
.
ירמיהו, אורי
;
.
ניסן, זיו
;
.
Volume :
Co-Authors:
Yigal Elad

Ziv Kleinman

Ziv Nisan

Dalia Rav-David

Uri Yermiyahu

 

Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

Downy mildew (Peronospora belbahrii) is a major disease of sweet basil (Ocimum basilicum). We examined the effects of potassium, calcium and magnesium, individually and in combination, on sweet basil downy mildew (SBDM) in potted plants and under commercial-greenhouse conditions over six growing seasons. An increased K concentration in the fertigation solution increased SBDM severity, whereas foliar-applied KCl and K2SO4 suppressed SBDM. The application of higher concentrations of those salts increased the K concentrations in the shoots and significantly alleviated SBDM. Increased concentrations of Ca or Mg in the fertigation solution decreased SBDM severity, as did foliar-applied CaCl2. However, the combination of Ca and Mg did not have any synergistic effect. Foliar-applied K2SO4 provided better disease suppression than some of these treatments. The 3.3 mM Mg + fungicide treatment and the 5.0 mM Mg + fungicide treatment each provided synergistic disease control in one of two experiments. SBDM severity was significantly reduced by MgCl2 and MgSO4 (both 3.3 mM Mg), as compared with the basic Mg fertigation (1.6 mM), with MgCl2 providing better control. The combined Mg salts + fungicide treatments reduced SBDM better than any of those treatments alone. These results demonstrate that macro-elements can contribute to SBDM control. 

Note:
Related Files :
calcium
Downy mildew
fertigation
irrigation
macro-elements
Magnesium
Ocimum basilicum
potassium
yield
עוד תגיות
תוכן קשור
More details
DOI :
10.3390/agronomy11040688
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
55558
Last updated date:
02/03/2022 17:27
Creation date:
12/07/2021 17:59
Scientific Publication
Effects of calcium, magnesium and potassium on sweet basil downy mildew (Peronospora belbahrii)
Yigal Elad

Ziv Kleinman

Ziv Nisan

Dalia Rav-David

Uri Yermiyahu

 

Effects of calcium, magnesium and potassium on sweet basil downy mildew (Peronospora belbahrii)

Downy mildew (Peronospora belbahrii) is a major disease of sweet basil (Ocimum basilicum). We examined the effects of potassium, calcium and magnesium, individually and in combination, on sweet basil downy mildew (SBDM) in potted plants and under commercial-greenhouse conditions over six growing seasons. An increased K concentration in the fertigation solution increased SBDM severity, whereas foliar-applied KCl and K2SO4 suppressed SBDM. The application of higher concentrations of those salts increased the K concentrations in the shoots and significantly alleviated SBDM. Increased concentrations of Ca or Mg in the fertigation solution decreased SBDM severity, as did foliar-applied CaCl2. However, the combination of Ca and Mg did not have any synergistic effect. Foliar-applied K2SO4 provided better disease suppression than some of these treatments. The 3.3 mM Mg + fungicide treatment and the 5.0 mM Mg + fungicide treatment each provided synergistic disease control in one of two experiments. SBDM severity was significantly reduced by MgCl2 and MgSO4 (both 3.3 mM Mg), as compared with the basic Mg fertigation (1.6 mM), with MgCl2 providing better control. The combined Mg salts + fungicide treatments reduced SBDM better than any of those treatments alone. These results demonstrate that macro-elements can contribute to SBDM control. 

Scientific Publication
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