칼슘化合物의 追加撒布가 사과後期落果防止劑인 2,4- DP의 果實軟化作用 抑制에 미치는 影響을 調査하였던 바 다음과 같은 結果를 얻었다. 1. 落果率은 處理區에 따라 4.2-9.7% 範圍였으며, 處理區間에 有意差는 없었으나, Ca(OH)₂ 追加撒布區가 낮은 傾向이 있었다. 2,4-DP 無撒布區의 落果率은 91.8%였다. 2. 可溶性 固形物 含量은 各 處理區間에 有意差가 없었으나, 適定酸度는 2,4-DP 單獨處理區가 다른 處理區보다 낮았다. 3. 硬度는 칼슘鹽과 2,4-DP 混用區가 2,4-DP 單獨區보다 成熟期間 中에 높은 傾向이 ...
칼슘化合物의 追加撒布가 사과後期落果防止劑인 2,4- DP의 果實軟化作用 抑制에 미치는 影響을 調査하였던 바 다음과 같은 結果를 얻었다. 1. 落果率은 處理區에 따라 4.2-9.7% 範圍였으며, 處理區間에 有意差는 없었으나, Ca(OH)₂ 追加撒布區가 낮은 傾向이 있었다. 2,4-DP 無撒布區의 落果率은 91.8%였다. 2. 可溶性 固形物 含量은 各 處理區間에 有意差가 없었으나, 適定酸度는 2,4-DP 單獨處理區가 다른 處理區보다 낮았다. 3. 硬度는 칼슘鹽과 2,4-DP 混用區가 2,4-DP 單獨區보다 成熟期間 中에 높은 傾向이 있었으며, 收穫 後의 調査期間 中에는 칼슘鹽處理區 中에서도 Ca(OH)₂ 追加撒布區가 有意하게 높았다. 4. 着色程度는 2,4- DP 單獨處理區가 높았으며, 다른 處理區간에는 有意차가 없었다. 5. Ethylene發生量은 Ca(OH)₂ 追加處理區에서 有意하게 減少되었다. 6. Ca含量은 果肉에서는 處理區間에 有意差가 없었으나, 果皮에서는 Ca(OH)₂와 CaCl₂ 追加處理區가, 果芯部에서는 Ca(NO₃)₂追加處理區에서 有意하게 높았다. 7. 以上의 結果에서 몇 가지 칼슘鹽 中 Ca(OH)₂1% 溶液을 1週間隔으로 3回 追加撒布 하면 2.4-DP에 의한 果實의 落果防止 效果와 果實의 品質에 惡影響을 미치지 않으면서 果實의 軟化를 效果的으로 抑制할 수 있음이 認定되었다.
칼슘化合物의 追加撒布가 사과後期落果防止劑인 2,4- DP의 果實軟化作用 抑制에 미치는 影響을 調査하였던 바 다음과 같은 結果를 얻었다. 1. 落果率은 處理區에 따라 4.2-9.7% 範圍였으며, 處理區間에 有意差는 없었으나, Ca(OH)₂ 追加撒布區가 낮은 傾向이 있었다. 2,4-DP 無撒布區의 落果率은 91.8%였다. 2. 可溶性 固形物 含量은 各 處理區間에 有意差가 없었으나, 適定酸度는 2,4-DP 單獨處理區가 다른 處理區보다 낮았다. 3. 硬度는 칼슘鹽과 2,4-DP 混用區가 2,4-DP 單獨區보다 成熟期間 中에 높은 傾向이 있었으며, 收穫 後의 調査期間 中에는 칼슘鹽處理區 中에서도 Ca(OH)₂ 追加撒布區가 有意하게 높았다. 4. 着色程度는 2,4- DP 單獨處理區가 높았으며, 다른 處理區간에는 有意차가 없었다. 5. Ethylene發生量은 Ca(OH)₂ 追加處理區에서 有意하게 減少되었다. 6. Ca含量은 果肉에서는 處理區間에 有意差가 없었으나, 果皮에서는 Ca(OH)₂와 CaCl₂ 追加處理區가, 果芯部에서는 Ca(NO₃)₂追加處理區에서 有意하게 높았다. 7. 以上의 結果에서 몇 가지 칼슘鹽 中 Ca(OH)₂1% 溶液을 1週間隔으로 3回 追加撒布 하면 2.4-DP에 의한 果實의 落果防止 效果와 果實의 品質에 惡影響을 미치지 않으면서 果實의 軟化를 效果的으로 抑制할 수 있음이 認定되었다.
This study was carried out to investigate the effects of additional application of calcium salts on fruit softening induced by dichlorprop in apples (Malus domestica Borkh). The results obtained are summarized as follows. 1. The rate of preharvest drop ranged from 4.2 to 9.7 % according to the treat...
This study was carried out to investigate the effects of additional application of calcium salts on fruit softening induced by dichlorprop in apples (Malus domestica Borkh). The results obtained are summarized as follows. 1. The rate of preharvest drop ranged from 4.2 to 9.7 % according to the treatments. The additional application of Ca(OH)₂tended to decrease the preharvest drop rate, whereas it showed no significance. 2. Sugar content of fruits showed no significant difference among treatments. but Dichorprop tended to decrease titratible acidity. 3. Fruit firmness was higher in the mixture treatment of calcium salts and Dichlorprop than single treatment of Dichlorprop during maturation. During the postharvest period, the additionalapplication of Ca(OH)₂showed the highest tendency of firmness amongst the calcium salts. 4. Surface color of the fruits was significantly different in the single spray of 2,4-DP but there was no significant difference among other treatments. 5. Production of ethylene was significantly reduced in the additional application of Ca(OH)₂. 6. Calcium concentration of the fruit flesh showed no significant difference but it was significantally different in the fruit peel and core. 7. From above results, it was proved that 3 additional application of 1% Ca(OH)₂at the interval of 1 week could effectively inhibit the softening of fruit, not harming the prevention effect on preharvest drop of 2,4-DP and fruit quality.
This study was carried out to investigate the effects of additional application of calcium salts on fruit softening induced by dichlorprop in apples (Malus domestica Borkh). The results obtained are summarized as follows. 1. The rate of preharvest drop ranged from 4.2 to 9.7 % according to the treatments. The additional application of Ca(OH)₂tended to decrease the preharvest drop rate, whereas it showed no significance. 2. Sugar content of fruits showed no significant difference among treatments. but Dichorprop tended to decrease titratible acidity. 3. Fruit firmness was higher in the mixture treatment of calcium salts and Dichlorprop than single treatment of Dichlorprop during maturation. During the postharvest period, the additionalapplication of Ca(OH)₂showed the highest tendency of firmness amongst the calcium salts. 4. Surface color of the fruits was significantly different in the single spray of 2,4-DP but there was no significant difference among other treatments. 5. Production of ethylene was significantly reduced in the additional application of Ca(OH)₂. 6. Calcium concentration of the fruit flesh showed no significant difference but it was significantally different in the fruit peel and core. 7. From above results, it was proved that 3 additional application of 1% Ca(OH)₂at the interval of 1 week could effectively inhibit the softening of fruit, not harming the prevention effect on preharvest drop of 2,4-DP and fruit quality.
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#사과나무 칼슘화합물 추가살포 과실연화작용
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