What does it mean that the orange tree in front of my house suddenly turns yellow?

The orange tree in front of my house suddenly withered and yellowed, which means that autumn has arrived, and it is harvest season!

It's not a sudden yellowing, it's something that goes wrong over a long period of time, it's just that you don't feel it.

What does it mean? There are two possibilities.

A kind of implication that late autumn is coming, and the harvest season has arrived......There is also a metaphor that the harvest is over and the cold winter is coming.

Let's see how to understand it in specific sentences.

There are many reasons why orange trees die, it can be due to pests and diseases, root lesions, lack of water, or soil quality issues, among others. Before the death of the orange tree, the following signs are generally present:

1.Yellowing or wilting of leaf color: If the leaves of an orange-bearing tree begin to turn yellow or wilt, it may be due to a lack of water or nutrients.

2.Lesions on the trunk: If cracks or spots appear on the trunk of an orange tree, it may be due to pests and diseases.

3.Branches become floppy or dry: If the branches of an orange tree begin to become floppy or dry, this may be due to root lesions or lack of water.

4.Tree Trunk Worms: If there are insect borers on the trunk of an orange tree, it may be due to the age of the tree or poor environmental conditions.

If the orange tree in your home dies suddenly, it is advisable to have a professional check to find out the cause of death and avoid the same problem from happening again.

For citrus huanglongbing, there is no particularly effective drug that can completely **. The prevention and control of this can only be based on prevention, supplemented by treatment. The main prevention and control measures are:

1. Strengthen the quarantine of seedlings, prevent the invasion and export of pathogens, and prevent diseased ears, seedlings and fruits from entering new planting areas and disease-free areas.

2. Establish disease-free nurseries and cultivate disease-free strong seedlings. The nursery should be selected in a disease-free area, an area with good isolation conditions, or a plastic shed to isolate and close seedlings. The rootstock seeds should be harvested from disease-free trees, and soaked in hot water before sowing, that is, the seeds should be immersed in about 50 hot water for 5 minutes, and then soaked in about 55 hot water for 50 minutes after being removed.

It can also be soaked in 1000 times tetracycline hydrochloride or oxytetracycline hydrochloride for 2 hours. The scion should be taken from the disease-free mother tree, preferably from the disease-free area, soaked in 1000 times tetracycline hydrochloride for an hour before grafting, and then rinsed with water before grafting.

3. Timely control of insect pests and eliminate communication vectors. Do a good job of clearing the garden in winter. Killing woodlice during the overwintering period is the key to year-round control.

In spring, summer and autumn, when the shoots are neatly drawn, spray psyllids with 800 times of 40 hydroamidophos emulsifiable concentrate, 800 times of 50 dimethoate emulsifiable concentrate, 20 quick to kill butadiene emulsifiable concentrate, and 2000 and 3000 times of dimethoate. When there are aphids on the new shoots above 1 3, spray them with 50 malathion EC or 40 dimethoate EC 1000 times.

4. Dig up diseased trees as soon as possible to reduce germs**. After each shoot turns green, each tree should be carefully and thoroughly inspected. Once diseased plants are found, they should be dug up as soon as possible, leaving no stumps, and transported to a vacant field outside the orange grove to be burned to ashes.

Orange orchard C should be consistent in variety, and sporadic shoots should be removed in time to make the shoots neat and tidy, so as to reduce the spawning grounds. Cut down weakened trees that have lost their ability to bear fruit to reduce the source of pests and diseases.

5. Timely injection of drugs to reduce the degree of harm. For the fruiting trees with the initial disease, 1000 times the solution of tetracycline hydrochloride or penicillin injection into the trunk has a certain inhibition and control effect on huanglongbing.

6. Strengthen fertilizer and water management to improve the disease resistance of plants.

For young trees, in the growing season from April to August, thin water fertilizer is applied once a month, and fertilizer is applied 4 to 6 times a year. For fruiting trees, germination fertilizer, stable fruit fertilizer, strong fruit fertilizer and fruit picking fertilizer should be applied every year. At the same time, it is necessary to carry out water management scientifically and ensure that the water is timely and sufficient.

Otherwise, too much water or too much humidity will cause root rot and foot rot, and in severe cases, the tree will die; Too little water or severe water shortages can cause plants to wilt, weaken growth, and even die trees.