Message from a citrus grower:
The citrus ring is too heavy, has long been wrapped in electrical tape, and the leaves have turned green.
On July 22, a fertilizer was sprinkled once (1.5 kg of organic inorganic compound fertilizer per plant), it rained on the 23rd, followed by two rains, and after 6 to 7 days, it was found that the fruit trees with excessive circumcision began to return to yellow (there was no yellowing phenomenon if the circumcision was not heavy), and 1/4 of the 20 acres returned to yellow.
Since July 28, fruit trees have slowly faded and then dried up and died, and I suspect that fertilizer inhibited the growth and recovery of fruit trees and eventually led to death.
The owner of the agricultural materials store came to see that the roots had rotted, saying that it was foot rot, and foot rot could not appear in a large area at once, he explained that he had foot rot, rained, put fat, and intensified its development.
Personal views of Citrus Friend Xiao Lu:
If you suspect the quality of the fertilizer, you can find the relevant departments to check whether the fertilizer is qualified.
If the quality of the fertilizer is not a problem, it is typical not to fertilize according to the condition of the fruit tree. Fruit trees with problematic roots cannot be fertilized according to normal fruit trees.
Analyze the reasons and focus first: circumcising overweight fruit trees, yellowing and drying after fertilization. Normal fruit trees, which do not appear after fertilization.
Why is that?
Answer: After the citrus circumcision (peeling), the nutrients produced by leaf photosynthesis are temporarily not transported to the roots, the root growth and absorption are affected, and the nutrients, water and growth hormone produced by the roots are reduced.
Circumcision (peeling) of overly heavy fruit trees, the circumcision has not been completely healed, root growth and absorption have been affected, can not normally absorb fertilizer and water, the root system will be relatively weak, summer encounter continuous rainfall, it is easy to appear root whiskers rot.
Fruit trees with weak roots and rotten roots are particularly prone to burning roots, and the amount of fertilizer they bear is very limited, and the amount of fertilization and the choice of fertilizer cannot be followed by normal fruit trees. There is a problem with the root system, the amount of application of normal trees is easy to burn the roots, and after burning the roots, the fruit tree will soon dry up.
Weak fertilization regimen for citrus root systems
1. Drizzle with curd bran water/ potassium fulvic acid/ humic acid / amino acid + balance / high nitrogen compound fertilizer (1/3 of the normal tree dosage), leaching 1 to 2 times.
2, the root system and tree potential has not completely returned to normal, the application of fruit expansion fertilizer, organic fertilizer / farm manure / peanut bran + compound fertilizer + trace elements, or organic and inorganic compound fertilizer, the amount of normal fruit trees is 1/3 ~ 1/2.
Root rot (not severe) fertilization regimen
1, drizzle humus ripe bran water / potassium fulvic acid / humic acid / amino acid + rooting agent (powder), can also be added to the fungicide together. Foliar fertilizers of amino acid/balanced/high nitrogen type can be sprayed on the foliar surface, and foliar nutrition is supplemented to promote root growth (leaf root, root leaf).
2, about 15 days apart, drizzle with fermented bran water / potassium fulvic acid / humic acid / amino acid + balance / high nitrogen compound fertilizer (1/3 of the normal tree dosage).
3, the root system and tree potential is about to return to normal, only to apply fruit expansion fertilizer, organic fertilizer / farm manure / peanut bran + compound fertilizer + trace elements, or organic and inorganic compound fertilizer, the dosage is 1/2 of the normal fruit tree, eat less and more meals, safe and not easy to roll over.
Precautions: Citrus root system is weak or rotten (not serious), dripping / spreading / burying fertilizer needs special attention, fertilization should be under the drip line or a little outside, evenly applied a circle.
Citrus Friend Xiao Lu:
Without fertilization, spraying, and pruning according to the condition of the fruit trees, problems often occur.
Some growers and merchants need to improve their management skills, growers have no technology, and when they encounter guidance from unskilled businesses, bad things can easily happen.
If the citrus management is wrong, a series of problems will appear, always have to be remedied, the cost is low, and the management is very headache. Teacher Fu fertilization is very simple, 2 to 3 times a year, to prevent various problems, there is not so much remedy, management is easy. 【Disclaimer】The content of this article, personal views, for reference only!