Foliar nutrition with Haifa Cal significantly increased Calcium (Ca) content of apple fruits
|
Crop/cultivar |
Apple/Jonathan x Gala |
|---|---|
| Country / location | Israel / Golan Height (Northern part) ; summer 2005 |
| Objectives | Improve yield and fruit quality (storability and combating ‘Bitter Pit’) |
| Haifa product tested | Haifa Cal GG 15.5-0-0 +26.5 |
| Application method | Foliar nutrition |
| Tested treatment | 6 x Foliar feeding @ 0.8% Multi-Cal + 0.025% Triton X-100, at 7 days intervals, starting in mid-June. |
| Control treatment results | Ca content (ppm in DM) in fruit rind - 647 Ca content (ppm in DM) in fruit flesh - 447 |
| Best treatment results | Ca content (ppm in DM) in fruit rind - 847 Ca content (ppm in DM) in fruit flesh - 538 |
| Conclusions | Haifa Cal significantly increased N and Ca contents of the apple fruits as compared with the unsprayed control. Fruit hardness and Bitter pit occurrence were not significantly affected by the treatment. |
| Reference | Yoni Gal, Ministry of Agriculture; E. Yonnay- “Golan Fruits“ |
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