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How to prevent flower and pod drop in soybean cultivation
1. Topdressing according to local conditions and seedling condition. For fields where the plants cannot close the rows in time during the flowering period due to lack of fertilizer, topdress once more at the early flowering stage. Generally, apply 5 kg of urea or 10 kg of ammonium sulfate per mu, which can reduce flower and pod drop. 2. Foliar spraying. During the flowering and podding stage, generally use per mu
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How to prevent premature senescence in cotton? Cotton farmers learn these three methods
Entering July to August is the peak period of massive flowering and boll setting in cotton, the key period for cotton yield formation, and also the peak period of cotton fertilizer demand. If fertilizer cannot keep up during this period, cotton will suffer premature senescence due to fertilizer deficiency, causing massive shedding of squares and bolls, resulting in substantial yield reduction and serious losses.
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How to Grow Cotton to Prevent Square and Boll Shedding
(1) General patterns of square and boll shedding. ① Ratio of square and boll shedding: In square and boll shedding, the overall trend in the ratio of square shedding to boll shedding is that the boll shedding rate is higher than the square shedding rate, with a ratio of about 3:2. ② Age of squares and bolls at shedding: After squaring, shedding is greatest at 11-20 days, while shedding of large squares over 20 days old is less. Young bolls 3-8 days after flowering are most prone to shedding, with 3-5 days being the most common, while young bolls over 10 days old rarely shed.
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How to prevent and control papaya mosaic virus disease when growing papaya?
Papaya mosaic virus disease is a devastating disease commonly occurring in papaya-growing areas in recent years. The plant becomes diseased soon after being planted, mottled yellow flower spots appear on the leaves, the new leaves are densely bunched and tightly clustered, rapidly lose their green color and become hard and brittle, breaking easily; afterward no new roots form and no new leaves grow
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How to prevent and control bacterial leaf spot in cantaloupe cultivation
Bacterial leaf spot is an important disease of cantaloupe, and it can occur in both protected and open-field cultivation. In severely affected fields or greenhouses, the diseased plant rate can reach over 80%, and severely diseased plants die from the disease, significantly affecting production. Symptoms mainly affect the leaves, and in severe cases also infect the stems, vines, and fruits. Leaves
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How to prevent and control powdery mildew in cantaloupe cultivation?
Powdery mildew is a major disease of cantaloupe, widely distributed and commonly occurring, occurring both in protected cultivation and in open fields, severely affecting cantaloupe yield and quality. Symptoms can occur throughout the entire growth period, and it can infect leaves, petioles and stems. Initially, white
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How to prevent and control insects boring inside plum fruits?
Speaking of plums, I think everyone is familiar with them. I remember that when I was a child, there were several plum trees right at our doorstep, but back then our family did not need to manage the plum trees much, and they still bore plenty of fruit every year. But if you want to grow plums that are both tasty and good-looking,
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How to prevent frost damage in plum trees? Key technical points for frost prevention when growing plum trees
Frost injury and freeze damage refer to the phenomenon in which the soil and plant surface temperatures drop to 0°C or below 0°C for a short time at night during the growing season, or when frost occurs, causing damage to the young and tender parts of fruit trees. In China, the average annual area affected by frost damage reaches 340,000 km2, and in the worst year it reached 7
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How to prevent and control peach bacterial shot hole? A detailed guide to peach tree disease prevention and control methods
Peach bacterial shot hole is a widely distributed disease with a high incidence rate. Bacterial shot hole occurs in all peach-producing areas nationwide, especially in coastal and lakeside areas, in orchards with poor drainage, and in rainy years, where it often breaks out severely. If not controlled in time, it easily causes
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How to prevent and control peach latent mosaic viroid? Key points for disease prevention in peach tree cultivation
Peach latent mosaic viroid is also known as peach mosaic disease, peach yellow mosaic disease, peach variegation disease, etc. It occurs in many countries such as the United States and Japan, and similar diseased plants have also been found in China. The only host of this disease is peach. (1) Symptoms Peach latent mosaic viroid is a latent disease, and the leaves generally do not
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