Vegetables

Why do pumpkin ovaries turn yellow and fall off in a garden bed in the open field

Anonim

Pumpkin is a frequent visitor to household plots, it is used for cooking and as pet food. Why do pumpkin ovaries turn yellow and fall off? This question often arises before summer residents with the onset of the growing season. Pumpkin ovaries rot for various reasons. It could be bad weather, a rainy summer, or a lack of nutrients in the soil. Even during the cultivation of the best varieties, this problem is not uncommon. It will be possible to cope with it if you follow the rules of agricultural technology for growing melons and gourds. The laying of the future crop occurs at the stage of planting seeds and growing seedlings. It is this stage that needs special attention.

Difficulties in seed germination

Pumpkins drop fruits due to “drowsiness” and rotting of planting material. By planting seeds in unheated soil in early spring, there is a problem with germination.

Planting in early spring causes seeds to sprout poorly. This is due to capricious weather, a sudden cold snap and rains. Pumpkin seedlings are planted in open ground after the soil is well warmed up in the sun. You can plant seedlings in the sun. The optimum temperature is above +15 degrees. Before planting, they dig small grooves and lay a dense fabric on the bottom.

Then the seeds are planted, covered with earth and watered abundantly. Such a measure to prevent freezing of planting material in the spring at night, when there are occasional frosts.

Weak sprouts

Another reason why the inflorescences are poorly tied, and the flowers turn yellow and fall off are weak sprouts. In this case, fertilizing with mineral and organic fertilizers is necessary for plants for good growth. Use a solution of bird droppings in a ratio of 1:15.

Planting and growing seedlings is a crucial moment during which the foundation of the future pumpkin crop is laid. If from year to year the sprouts sprout frail and turn yellow, then it will be possible to save the situation if small mounds of rotted manure and potato tops are built at the seed planting site.

Root rot after transshipment of seedlings

Often, after applying nitrogenous fertilizers, after transshipment of seedlings, the ovaries of pumpkins in open ground fall off. This is due to the fact that when fertilizer is applied to unheated soil, it reduces the overall frost resistance of the soil and the seedling root system begins to rot.

Experienced summer residents apply nitrogen-containing top dressing after the soil warms up by at least +12 degrees. To protect seeds from frost, they are placed in a solution of potassium permanganate before planting.

Another reason for the rotting of the root system of seedlings in the seedling method of growing is that after thinning out weak sprouts, the roots of the neighbors are damaged. To prevent yellowing of pumpkin seedlings, weak sprouts are cut with a sharp knife to the very root.

The ovaries rot and there are few of them

Pumpkin does not bear fruit and forms a small amount of ovaries if the weather is cold and rainy for the first time after planting and sprouts appear. Pollination of inflorescences, therefore, rarely occurs due to the absence of insects on the street. Most often this happens in the northern regions, where the weather is not always warm in summer.

Save the situation will help artificial pollination. In warm weather, the male inflorescences are cut off and the petals are carefully removed from them with tweezers. It is possible to distinguish male inflorescences from female in appearance, they differ in long pedicels and form several stamens. Then you need to press with your finger 2-3 anthers at the stamens to the protruding pollen of the pistil at the female flower.

An effective way to attract bees is to spray the plants with honey. Dissolve 50 g of honey in 1 liter of warm water. Thoroughly mix and treat each inflorescence with a honey solution. The smell of honey after a while will attract insects that will pollinate the inflorescences.

If there are few ovaries in the greenhouse, then the reason here is either the lack of pollination or the lack of nutrients in the soil.

The soil in the greenhouse is different from the soil in the open field. It needs to be constantly updated and fertilized every season. Superphosphate is used as top dressing. Tablespoon in a bucket of warm water. Fertilizers are thoroughly mixed and watered with soil. In autumn, after harvesting, manure or bird droppings are introduced into the soil. They dig it up with fertilizer and leave it for the next year.

The second reason why there are few ovaries in the greenhouse is the lack of pollination. When growing crops in greenhouse shelters, this problem is not uncommon.

It will be possible to solve it if, with the onset of the flowering period, pumpkins are placed in greenhouse shelters with bees. After a while they will have to be removed. For a small greenhouse, one beehive will suffice.

No ovaries

The lack of ovaries can put an end to growing a good crop. The problem of the lack of ovaries in pumpkins is associated with planting planting material in poor infertile soil. Under such conditions, the pumpkin stuns in growth, and does not form ovaries. You need to sow the seeds in fertile soil rich in humus.

But you should not apply too much fertilizer to the soil. In the Dig Soil, plants form long lashes and a large amount of foliage, not ovaries and inflorescences.

Only in the soil in which there are enough nutrients, fertilization and the formation of ovaries occur.The male flower produces enough stamens to pollinate the female inflorescences. Therefore, for planting pumpkins, you need to choose areas where fertilizers were applied 1-2 years ago. During this time, other plants will not have time to take away all the nutrients, but there will also be no overfed soil.

Abundance of irregularly shaped ovaries

The reason why pumpkin fruits turn yellow and fall off may be the formation of irregularly shaped inflorescences. Such an inflorescence draws out most of the nutrients, while preventing other well-shaped inflorescences from developing normally.

If several such lashes are formed on each bush, then this significantly affects the yield of pumpkin as a whole.

To prevent the formation of irregularly shaped ovaries during flowering, the lashes are formed independently. When pollination is completed, then 3 lashes are formed on large-fruited varieties. Each lash should not have more than one ovary. At least two.

In June, pinch the tops after the fruit over the 5-6th leaf. In small-fruited and medium-fruited varieties, all empty flowers are removed. Pinch them in early August. After the last fruit, 3-4 leaves are left.

Oves of irregular shape are also formed due to lack of nutrients. To prevent the formation of "ugly" ovaries, top dressing is carried out on the leaves. They use organic fertilizers or phosphorus- and nitrogen-containing complexes.

Slow fruit development

When grown, pumpkin grows poorly and forms few ovaries due to the strong foliage of plants. Leaves prevent sunlight from reaching the ovaries, and from this they lag behind in growth. Pumpkin fruits from this wither and turn yellow. Under a dense crown of foliage, bees do not always pollinate all inflorescences. And if its female flowers are pollinated, then there is no need to wait for a good harvest.

To make the pumpkin grow well, remove excess leaves that darken the entire bush. The leaves are cut off with a sharp pruner. It is important to ensure that the cut is even. Another reason for the slow development of fruits in pumpkins is the poor absorption of nutrients by the plant. To do this, the base of the stem is sprinkled with earth and lightly tamped.

Fruit breaking off and rotting

If the pumpkin rots in the garden and the fruits rot, then most likely the ripening fruits lie on the ground. Especially if the weather is rainy for a long time and the soil does not have time to dry out, the pumpkin begins to rot and break off.

To solve this problem, just put a wooden board under the fruit. Hanging fruits can be placed in the net and tied to a support so that the net does not come into contact with the soil.

How to prevent yellowing of ovaries

Pumpkin belongs to unpretentious crops, but it also needs minimal care at the stage of ovary development and fruit formation.

Tips for preventing crop damage:

  • If it should rain, and the ovaries began to rot, then you need to make an outflow of water from the garden.
  • The soil needs to be loosened regularly.
  • If the warm weather at night has not yet settled, then the pumpkin is covered with material. It is desirable that it pass oxygen. If this was not at hand, then several small holes are made in the film. This is necessary for air circulation.
  • To improve pumpkin fruiting, every 2 weeks the bushes are watered with a fruit formation stimulator, for example, Gibbersib-U.
  • If yellow leaves began to appear on the garden, then the pumpkin is fed with potassium sulfate. Mullein diluted in warm water is suitable for top dressing.
  • Pumpkin bushes are watered only with warm, settled water.
  • Pumpkin is one of the crops that prefer to grow in open sunny areas. Bushes planted in the shade begin to turn yellow and form few ovaries.
  • Excess, as well as lack of nutrients, negatively affects the formation of inflorescences and fruit formation. With an excess of nitrogen, pumpkin lashes become large, and the foliage is very dense.
  • The ovaries fall off with a lack of phosphorus and potassium. With its excess in the soil, the same thing happens.
  • When the temperature outside becomes high (above +30 degrees), the inflorescences become sterile. And even if the bees pollinate them, then the ovaries do not form in the future. At low temperatures up to +16 degrees, plants begin to eat poorly. In this regard, it slows down the growth and formation of ovaries in pumpkins, if inflorescences appear, they quickly crumble.
  • With an excess of moisture in the soil, the inflorescences and fruits begin to rot, and then fall off.
  • Pests are often the cause of poor ovary formation. Bushes are regularly checked for the presence of meadow moth. By eliminating the weeds, it will be possible to prevent the appearance of insects on the site.

Observing the peculiarities of pumpkin cultivation, it will be possible to immediately prevent problems with the formation of ovaries on the bush and the fall of inflorescences.