Prevention and control of hollow watermelon in spring
Symptoms: gaps or voids appear in the pulp of watermelon fruit. Etiology: it is easy to occur in the case of low-node fruit setting, crazy seedlings caused by excessive nitrogen nutrition, or poor fruit setting and increased leaf area. The main reason is the excessive accumulation of nutrients in the plant. The hollow fruit usually has longitudinal grooves on the fruit surface, the pericarp is thick, the fruit shape is not perfect, and the sugar content is on the high side. On the other hand, the hollow fruit formed by too large leaf area has large fruit shape and high sugar content. The triploid seedless watermelon grows vigorously and the hollow fruit is more common. Control measures: carry out reasonable and appropriate amount of fertilization and pruning, adjust the number of fruit setting and fruit setting node position.
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Prevention and Control of split Watermelon in Spring
Watermelon fruit cracking can be divided into field fruit cracking and harvest fruit cracking. The cracking of fruit in the field is caused by the sudden change of soil conditions. If in the fruit development certain stage soil moisture is little, the fruit development is blocked, suddenly meets the rain or pours the flood, the soil moisture increases sharply, causes the fruit to expand rapidly and crack the fruit.
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Causes and control measures of watermelon and stiff melon in spring
1. Excessively growing melon vines: the production of nutrient stems and leaves consume a lot of growth, which can not meet the needs of fruit expansion, but show a state of crazy growth. Strong seedlings should be cultivated to lay a good foundation for normal fruit development. Before and after fruit setting, according to the size of new leaves, the thickness of vines, the length of internodes, and from the top of the vine to already opened.
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