On which crops does ethephon work well?
Which crops does ethephon work on? Please explain. Ethephon is an organophosphorus broad-spectrum low-toxicity plant growth regulator that promotes ripening. It can enter the plant through leaves, bark, fruit and seeds, then be transported to the site of action, where it releases ethylene. It can promote fruit ripening and coloring, promote leaf and fruit...
Which crops does ethephon work on? Please explain.
Ethephon is an organophosphorus broad-spectrum low-toxicity plant growth regulator that promotes ripening. It can enter the plant through leaves, bark, fruit and seeds, then be transported to the site of action, where it releases ethylene. It can promote fruit ripening and coloring, promote leaf and fruit abscission, dwarf plants, change the ratio of male to female flowers, induce male sterility in crops, and so on.
In Zhongfang County, ethephon is mainly used on: rice, corn, Jinqiu pear, grape, peach, tomato, cucumber, melon, cotton and many other crops. Only by using plant growth regulators reasonably can yields and benefits be increased.
1. Rice: at the 5-6 leaf stage of seedlings (15-20 days before transplanting), spray once with a 600-800 times dilution of the 40% aqueous solution; this can regulate growth, dwarf and strengthen seedlings, and increase yield.
2. Corn: at the small trumpet stage, use 10-15 milliliters of the 40% aqueous solution per mu, diluted in 30 kilograms of water, and spray; this regulates growth and increases yield.
3. Jinqiu pear: 20-30 days before harvest, spray the whole plant once with a 5000 times dilution of the 40% aqueous solution; this promotes fruit ripening.
4. Grape: at the beginning of berry ripening, spray once with a 1000-2000 times dilution of the 40% aqueous solution; this can promote berry coloring and advance ripening by 5-12 days, but a high concentration easily causes fruit drop.
5. Peach: at the mid-hard-pit stage of the fruit, spray the fruit with a 5000 times dilution of the 40% aqueous solution; this can advance ripening by 3-4 days and give early and uniform coloring, but the fruit is softer.
6. Tomato: for green fruit near the ripening stage, spray the fruit with an 800-1000 times dilution of the 40% aqueous solution; this promotes fruit ripening and earlier color change.
7. Cucumber and pumpkin: at the 3-4 leaf stage of young seedlings, spray once with a 2000-3000 times dilution of the 40% aqueous solution; this can increase female flowers and raise yield.
8. Melon: at the 1-3 leaf stage of seedlings, spray once with an 800 times dilution of the 40% aqueous solution; this promotes the formation of bisexual flowers and increases yield.
9. Cotton: when 70%-80% of cotton bolls are opening, spray with a 300-500 times dilution of the 40% aqueous solution; this promotes boll opening and increases yield.
Note: Ethephon is strongly acidic; it must not be mixed with alkaline substances, nor diluted with alkaline water. At low temperatures, appropriately increase the dose; at high temperatures, appropriately reduce the dose. This agent strongly irritates the skin and eyes, so pay attention to safety protection when using it.
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