What should I do if the pepper is not red? ——Analysis of pepper color changing problems and solutions
Recently, the "color change problem" in pepper cultivation has become a hot topic in the agricultural field. Many farmers have reported that peppers have not turned red after growing to a certain stage, affecting yields and economic benefits. This article will combine the hot discussion data of the entire network in the past 10 days to analyze the reasons and provide scientific solutions.
1. Top 5 recent hot issues in pepper planting
| Ranking | Question type | Discuss the popularity index | Main areas of occurrence |
|---|---|---|---|
| 1 | Chili peppers won’t turn red | 9.2 | Sichuan, Hunan, Yunnan |
| 2 | Insects and diseases intensify | 8.5 | Jiangxi, Guizhou |
| 3 | Decreased fruit set rate | 7.8 | Hubei, Anhui |
| 4 | fruit cracking | 6.9 | Henan, Shandong |
| 5 | premature aging problem | 6.3 | Common nationwide |
2. Analysis of the six major reasons why peppers are not red
According to feedback from agricultural experts and growers, the failure of peppers to turn red is mainly related to the following factors:
| Reason Category | Specific performance | Proportion |
|---|---|---|
| Abnormal temperature | Continuously below 15℃ or above 35℃ | 32% |
| Insufficient light | Average daily sunshine <6 hours/continuous rain | 25% |
| nutritional imbalance | Excessive nitrogen fertilizer/deficiency of potassium and calcium | 18% |
| Hydration | Drought or waterlogging | 12% |
| Variety characteristics | Late maturing varieties/special varieties | 8% |
| pests and diseases | Viral diseases/red spider hazards | 5% |
3. Practical solutions
1. Environmental control plan
| measures | Operational points | Effective time |
|---|---|---|
| temperature management | Greenhouse cultivation maintains a temperature difference between day and night of 25-30°C | 3-5 days |
| Light enhancement | Reflective film laying/fill light use | 7-10 days |
| moisture control | Keep soil moisture at 60-70% | immediately |
2. Nutritional supplement program
The following foliar spray combination is recommended (once every 7 days):
| period | Recipe | concentration |
|---|---|---|
| Early color change | Potassium dihydrogen phosphate + chelated calcium | 0.3%+0.2% |
| Mid veraison | Amino acid + boron fertilizer | 500 times +0.1% |
| Late color transfer | Red potassium + vitamin C | 800 times +0.05% |
3. Emergency measures
For ripe green peppers, use:
• Ethephon promotes redness: 40% ethephon 1500 times liquid spray
• Root cutting treatment: circumferentially cut off part of the root system 20cm away from the main trunk
• Pick leaves to promote redness: remove old leaves at the base to increase ventilation and light transmission
4. Sharing of recent successful cases
| area | Original question | solution | Increased conversion rate |
|---|---|---|---|
| Meishan, Sichuan | Continuous rain does not turn red | Supplementary light + potassium fertilizer spraying | 85%→97% |
| Changsha, Hunan | heat barrier | Shade net + water spray in the morning and evening | 60%→89% |
| Yuxi, Yunnan | nutritional imbalance | Soil testing and formula fertilization | 72%→95% |
5. Special reminder from experts
1. Avoid excessive use of redness enhancers, which may lead to quality degradation
2. The best effect is to maintain a temperature difference between day and night of 8-10℃ during the color change period.
3. Check soil EC value regularly and control it at 1.2-1.8mS/cm
4. Pay attention to preventing anthrax and other diseases that are susceptible to the color change period
Through scientific management, the color change problem of peppers can be completely solved. It is recommended that growers choose a suitable solution based on their own circumstances and consult the local agricultural technology department when necessary. The weather has changed greatly recently, so special attention should be paid to the impact of sudden temperature changes on the color change process.
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