What causes pumpkin leaves to turn yellow?

Friends who often grow pumpkins should know that even a tiny disease can threaten the whole plant, so what is going on when pumpkin leaves turn yellow? Let's take a look together!

1. What is going on when pumpkin leaves turn yellow

Pumpkin leaves turning yellow may be caused by lack of light, overwatering, or infection by pests and diseases. If it is due to lack of light, then light should be increased and the plant should be given more sun. If it is due to overwatering, then the amount of water should be reduced, and ventilation and loosening of the soil should be increased. If it is due to infection by pests and diseases, then pesticide should be sprayed promptly for treatment, and the specific types and amounts of pesticide used should follow the instructions.

2. Pumpkin cultivation techniques

1. Site selection and land preparation

Pumpkins have relatively strong drought resistance, but their water requirements are relatively strict, and there should not be too much water, so when selecting a site, attention should be paid to choosing land with relatively high terrain and good drainage and irrigation, and they should not be planted in soil that easily accumulates water and does not drain easily.

2. Sowing techniques

High-yield pumpkin techniques generally use the method of joining multiple plants, that is, when the pumpkin seedlings grow to about 50 to 60 cm, use a knife to cut off the tips of the main seedlings of two adjacent plants, then tie the two seedlings whose tips have been cut off tightly together, and usually after two or three days the joint will grow new shoots

3. Field management

When the pumpkin seedlings grow to about two meters, we should promptly remove the tops of the vines, so that they will grow more vines, which is helpful for increasing yield. At the same time, some frames can be built at this point to guide the seedlings onto the frames and let them grow along the frames. This can also avoid damage to the vines from rain and reduce pests and diseases, increasing the probability of setting fruit.

4. Disease prevention

Pumpkins usually have relatively few diseases, and the most common one is powdery mildew, but its harm is very great. It will directly affect the growth of pumpkins and lead to poor quality pumpkins, so timely treatment is needed. We generally use spraying with 2000 times dilution of triadimefon emulsifiable concentrate, 200 times dilution of % agricultural antibiotic 120 aqueous solution, or spraying with 1500 times dilution of tebuconazole.