Why do gourds planted in balcony pots turn their leaves yellow?

The appearance of yellow leaves, depending on the characteristics of its occurrence, has the following situations:

One is water yellow. Caused by over-frequent watering, it is characterized by no obvious change in old leaves and yellowing of young leaves; This should be done with immediate water control;

The second is dry yellow. Caused by lack of water and drought, it is characterized by the first yellow leaves from the bottom up, if the lack of water for a long time, the whole plant will be yellow, and even die, should be watered in time;

The third is fat yellow. Caused by excessive fertilization or high concentration; It is characterized by thick, shiny, and uneven young leaves; Fertilizer, cultivation and watering should be controlled;

Fourth, hungry yellow. It is caused by insufficient fertilizer, low fertilizer concentration, and long fertilization interval; It is characterized by the first yellow of young leaves and young stems, and if you do not fertilize in time after seeing this phenomenon, it will also cause the whole plant yellow leaves or even die; For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at one time, so as not to cause root burning;

Fifth, iron deficiency yellow leaves. Due to the great change of soil fertility conditions, the phenomenon of yellow leaves often occurs in greenhouses, which is characterized by obvious young leaves, light old leaves, yellow mesophyll, green leaf veins, and the formation of a typical network. It can be solved by applying ferrous sulfate aqueous solution, and the method is: 7 parts of cake fertilizer, 5 parts of ferrous sulfate, and 200 parts of water are prepared into multiple liquid water.

The gourd appears yellow leaves, and there are to.

The following scenarios:

One is water, caused by excessive watering, which is characterized by no obvious change in the old leaves and yellowing of the young leaves, which should be controlled immediately;

The second is drought, caused by lack of water and drought, which is characterized by the first yellow leaves from the bottom up, if the lack of water for a little longer, the whole plant will be yellow leaves, and even die, should be watered in time;

the third is fertilizer, caused by excessive fertilization or high concentration; It is characterized by thick young leaves, shiny, and uneven, which should be controlled, cultivated, and watered;

Fourth, it is caused by hunger, due to insufficient fertilizer, low fertilization concentration, and long fertilization interval, which is characterized by young leaves and young stems that are yellow first, if this phenomenon is not fertilized in time, it will also cause the whole plant yellow leaves and even die; For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at one time, so as not to cause root burning;

Fifth, iron deficiency, woody flowers in the greenhouse, etc., due to the large change in soil fertility conditions, there is often a yellow leaf phenomenon, characterized by obvious young leaves, light old leaves, yellow mesophyll, green leaf veins, and the formation of a typical network, can be solved by applying ferrous sulfate aqueous solution, the method is: 7 parts of cake fertilizer, 5 parts of ferrous sulfate, 200 parts of water are prepared into a double liquid watering.

This may be the disease in the root or soil surface, this is the symptom of gourd wilt, is a bacterial disease, but also a common disease of cucurbitaceae plants, the initial disease is not obvious, only at noon when the light is strong or the temperature is high, the leaves wilt slightly, and then the whole plant wilts particularly obviously, and finally dies.

In terms of prevention and control, it is mainly watered with agricultural streptomycin and Runkeella (thiazobacter copper) for prevention and control, and the effect is good.

In addition, watering should be controlled, do not water too often, and only water when the soil surface is dry.

It is not a lack of fertilizer, if there is a lack of fertilizer, it will only cause the small gourd to shrivel and yellow, and the leaves and stems will be disease-free.

Before planting, the soil can also be prevented by exposing the soil to the sun or disinfecting it with potassium permanganate, formalin, etc.

The gourd flowers are monoecious, and they are manually pollinated to ensure fruiting.

Thin fertilizer is applied frequently. Each tree only expands and develops a small gourd, which may be caused by lack of fertilizer, insufficient light and poor ventilation, it is recommended to apply some nitrogen, phosphorus and potassium mixed fertilizers, and try to give sufficient light to maintain a certain ventilation.

It's not a matter of how much water there is, but the gourd should be planted on the ground, and the few I planted in the pot were not spared, and I later heard that the gourd can't survive in the pot.

You can't have too much water, plant it in a pot, the place is too small and not enough fat!

What to do if the leaves of the gourd turn yellow.

1. Adjust the moisture.

The yellowing of the leaves of the gourd may be caused by improper moisture, and the long-term lack of water will lead to dry yellow leaves, generally from the old leaves below the first yellow, and then the young leaves are yellow, and the water should be watered in time. Applying too much water will lead to root rot, resulting in waterlogging, in this case, the young leaves turn yellow first, need to stop watering, loosen the soil in time to promote excess water can flow out, and put it in a well-ventilated place to promote water evaporation.

2. Adjust fertilizers.

Improper application of fertilizer is also one of the reasons, the growth needs a certain amount of fertilizer supplement, once the lack of fertilizer, young leaves, young stems will turn yellow first, need to be applied in time according to the growth of Bika water-soluble fertilizer, to ensure the balance of fertilizer species, the elements should be reasonably proportioned. If you apply too much fertilizer will also cause the leaves to turn yellow, you can dilute the concentration of fertilizer with watering to encourage excess fertilizer to flow out of the bottom of the pot.

3. Lack of iron.

In the process of breeding, the fertility conditions of the soil change greatly, and the leaves will also turn yellow, mainly on the young leaves, resulting in the yellowing of the mesophyll. In this case, it is necessary to apply a solution containing more iron elements, which can be mixed with cake fertilizer, ferrous sulfate, and water to water the roots, which can alleviate the yellow leaves.

In this case, of course, the lack of fertilizer is the result of a lack of a substance. That's why his leaves turn yellow because he still lacks some sunlight.