|
KMID : 0903619930340010029
|
|
Journal of the Korean Society for Horticultural Science
1993 Volume.34 No. 1 p.29 ~ p.35
|
|
|
Effects of Potassium Compounds Foliar Spray on Mineral content of Leaf and Cluster Stalk , and on Fruit Quality in ´ Campbell Early ´ Grape
|
|
|
|
|
Abstract
|
|
|
This study was carried out to clarify absorption effect of foliar sprayed potassium compounds, to select suitable foliar liquid fertilizer of potassium and to determine optimal concentration and application times of K₂PO₄ in ´Campbell Early´ grape. The results obtained were as follows;
1. Even though potassium was absorbed by foliar application of KH₂PO₄, KNO₃ and K₂SO₄, phosphorus and nitrogen were absorbed with potassium in KH₂PO₄ and KN03 respectively. Thus, K₂SO₄ is considered as the promising potassium fertilizer in foliar spray.
2. Optimal concentration of K₂SO₄ in foliar spray seemed to be 0.6 %.
3. When the K₂SO₄ was sprayed four times in growing season, the absorption of potassium was observed in leaves and fruit peduncle. And this application of K₂SO₄increased soluble solids in fruit.
4. A highly significant positive correlation was found between potassium content in fruit peduncle and soluble solids in fruit juice.
5. Potassium content in fruit juice tended to be increased through increasing the number of times of K₂SO₄ spray.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|