Here is a concise summary of the provided transcript:
**Title:** Onion Cultivation Analysis
**Summary:**
* The video showcases the cultivation of onions, highlighting key stages and practices.
* **Fertilization:** Starts 15 days after transplanting, using "Triple 16" fertilizer (16% N, 16% P, 16% K), applied 3-4 times a month.
* **Soil Preparation:** Utilizes a plow and horse to mix fertilizer into the soil, promoting healthy root growth.
* **Weed Control:** Manual removal of grass ("clac mate") to prevent regrowth.
* **Irrigation:** Performed every 15 days to prevent fungal and bacterial issues.
* **Growth Stages:** Onions are ~2 months old, with visible bulb growth. The goal is to achieve "jumbo" or "colossal" sizes.
* **Tips for Large Onions:**
+ Focus on creating strong, thick stems through potassium-rich fertilization.
+ Lower the stem to the bulb to maximize size.
* **Pest and Disease Control:** Fumigation is crucial to prevent botrytis, alternaria, bacteria, downy mildew, and thrips.
* **Conclusion:** The video concludes with a harvest preview and an invitation to subscribe for more crop-related content.
Here are the extracted key facts, numbered and in short sentences, excluding opinions:
**Onion Cultivation**
1. Fertilization of onions should start 15 days after transplanting.
2. The fertilizer "Triple 16" contains 16% nitrogen, 16% phosphorus, and 16% potassium.
3. For every 100 kilos of "Triple 16" fertilizer, around 50 kilos are applied per task.
4. Each task is equivalent to 1,000 square meters.
5. Fertilizers are applied 3-4 times a month throughout the growing season.
**Soil Preparation and Irrigation**
6. A plow and horse are used to stir fertilizer with the earth, bringing it close to the onion roots.
7. Irrigation is done every 15 days to prevent fungal and root problems.
8. Watering before 15 days can lead to fungi and root issues, while waiting after 15 days can attract thrips.
**Weed Control and Harvest**
9. Manual removal of grass (called "clac mate") is done to prevent regrowth.
10. Workers use a hoe to uproot grass, which is then collected.
11. Onions are typically ready to harvest after about 4.5 months, when the stem bends naturally.
**Crop Health and Pest Control**
12. Common diseases to prevent in onions include Alternaria, Botrytis, bacteria, and downy mildew.
13. Thrips are a common pest that can infest onions, especially in dry conditions.
14. Fumigation is essential to prevent diseases and pests, ensuring all leaves are well-covered.
**Crop Development and Yield**
15. Onions in Mexico are categorized into six sizes: small, medium, large, extra, jumbo, and colossal.
16. The plant's stem and tail are crucial for developing large onions, with ideal stem length being around 75-80 cm.
17. Applying potassium during fertilization helps develop healthy, large stems and bulbs.