Why do chive leaves develop dry tips? Causes and control methods
Chives are a fairly popular vegetable in our daily lives, and they are grown over a very wide area, but during cultivation the phenomenon of dry chive tips often occurs. This situation seriously affects the quality of chives, reduces economic returns, and brings certain economic losses to farmers. So what causes dry chive tips? And how should they be controlled? Let's take a look together with Qinong Net.
1. High soil acidity
Chives prefer soil that is on the neutral side. During planting and growth, if the soil acidity is too high, or if acidic fertilizers such as diluted manure, cake fertilizer, or ammonium sulfate are applied to the soil over the long term during fertilization, the soil acidity will also increase and cause acidification. When chives grow in acidified soil, acid damage occurs, leaf growth is slow, and the leaf tips turn yellow and dry up.
Control method: Test the soil pH before planting. Pay attention during fertilization; acidic fertilizers should not be applied over the long term. If soil acidification occurs, lime powder can be scattered into the soil to adjust the pH, but it is not suitable for use in greenhouses.
2. Harmful gases
The phenomenon of harmful gases causing dry tips on chive leaves mainly occurs in greenhouses, because greenhouse ventilation differs somewhat from open-field cultivation and is unfavorable for the release of harmful gases. Applying large amounts of acidic fertilizer before covering the greenhouse will cause it to produce large amounts of ammonia during decomposition, and combined with greenhouse cultivation, this causes the ammonia content in the air to become higher and higher, thus causing chive leaves to turn yellow and dry up.
Control method: Use manure and chemical fertilizers reasonably. Do not apply too much at one time; follow the principle of applying small amounts more frequently. Water promptly after fertilizing. Severely limit the application of highly acidic fertilizers and apply fully decomposed organic fertilizer as much as possible.
3. High temperature and poor ventilation
Chives are a heat-loving vegetable and grow suitably in an environment of 5-35°C, but if the temperature stays above 30°C for a long time during cultivation without timely ventilation, or if it suddenly clears up after a heavy rain, leaf withering will occur.
Control method: Master the correct ventilation method. When the temperature inside the greenhouse is 20-30°C, ventilation can be reduced appropriately. As the temperature continues to rise, ventilation should also be correspondingly strengthened. Ventilation should be done slowly, and cold air should not be allowed to enter suddenly. Properly adjust the day-night temperature difference through ventilation to narrow the temperature gap.
4. Nutrient imbalance
During the growth of chives, in addition to common elements, various trace elements are also needed. If these trace elements are deficient, causing nutrient imbalance, it can also lead to dry tips in chives. For example, when calcium is deficient, the leaves turn yellow and the dry tips die; when boron is deficient, the heart leaves turn yellow and growth is slow; and if boron is excessive, the heart leaves will also wither and die.
Control method: Apply some organic fertilizer appropriately during fertilization to ensure what chives need for growth. If yellowing and dry tips occur due to nutrient imbalance, promptly supplement the corresponding trace elements.
The above are the causes of dry tips on chive leaves and the control methods brought to you by Qinong Net. We hope this can help you. To learn more about chive cultivation techniques, please stay tuned to Qinong Net.