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Scientific methods for using the grape ripening agent ethephon
1. Pay attention to watering for varieties prone to fruit cracking, keeping the soil from drying out before the fruit expands and grows, so that the skin will not age; then when the rainy season comes and the soil has too much moisture, fruit cracking will be reduced; 2. When conditions permit, it is recommended to bag the grapes; bagged grapes have fresh, tender skin with strong elasticity, and even if rain accelerates expansion, they are less likely to crack...
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Grape disease and pest prevention: using these three sprayings well is the key
1. Peeling. In early spring, first lay a layer of plastic film under the grapevines, then peel the bark off the canes and let it fall onto the film; at the same time cut off diseased and pest-infested branches, gather them together with the bark scraps on the film and burn them outside the vineyard. 2. Deep plowing. Along with applying the grape bud-break fertilizer, carry out one deep plowing of the whole vineyard, with a depth of 2...
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What are the precautions for using pear fruit swelling agent?
Pear fruit swelling agent is a plant growth regulator developed and utilized in recent years. Its effect is to promote fruit cell enlargement, especially when used on early and mid-season pears, where the swelling effect is obvious. However, improper use of pear fruit swelling agent will not only fail to achieve the ideal effect, but also cause side effects. Therefore, for pear trees using swelling agent, water and fertilizer must be kept up, especially full-element chemical fertilizers, to ensure sufficient nutrients to meet the needs of fruit growth and development, so as to achieve the ideal effect. In addition, harvest at the right time
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Using Guobaosu on peaches can promote coloring and ripening
Guobaosu is a new type of plant growth regulator, produced and supplied by Shanghai Solvent Factory. In 1991 and 1992, according to trials reported by Li Guangchen and others from the Department of Horticulture at Beijing Agricultural University on peach varieties such as "Zaofeng" and "Okubo", spraying Guobaosu on the leaves 4-3 weeks before the normal harvest period allowed the fruit to color 5-10 days earlier, extremely significantly increased the percentage of colored fruit, and also significantly increased the fruit coloring index. The fruit was very brightly colored, and the fruit ripening period was advanced by 3-10 days. Early harvest did not reduce fruit firmness or soluble solids content
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