From good to first, your beautiful pine or cypress begins to dry, or your arizonic hedge turns brown. Probably, you increase the irrigation thinking that only this way will improve, but this is not the solution, since the origin of the problem is precisely the excess of water. Read on to find out how to address coniferous browning .
Coniferous browning is the name obtained by the symptoms of desiccation, whether partial or total, of this type of plant. It usually occurs in cypresses, arizonic hedges, juníperos, firs, pines, false cypresses and various conifers.
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Beware of the waterlogging
The desiccation is caused by the pooling of the substrate , whether it is a low porous soil, very clayey, poorly drained, or due to excessive irrigation. The water is responsible for filling the pores of the substrate that should be filled by air and, therefore, the roots quickly run out of oxygen.
By increasing the carbon dioxide in the root environment, various chemical reactions begin to appear that generate a great loss of permeability in the root membranes, so the plant not only has problems absorbing water, but also nutrients. Therefore, the foliage begins to yellow.
Biological agents and fungi are present
Due to the lack of oxygen in the roots, there are opportunistic biological agents willing to attack the secondary roots, which are responsible for absorbing nutrients and water, generating rot.
Later, these invade the primary roots and end up affecting the base of the trunk. This infection is growing and spreads to neighboring plants. There are also some fungi capable of taking advantage of the weaknesses of the conifers, affecting the branches and the trunk.
The fungus Phytophora is one of the most common fungi in conifers, hedges and grass , although it can attack other species as well. The main cause is excessive irrigation, a very high temperature with high humidity, or weakening of plants. It usually starts at the bottom of the plants and subsequently affects the upper parts, drying out the branches and leaves.
To know if the fungus Phytophtora is present you should visualize the conifers in search of drying of the leaves, yellowing, weakening of the plant in general or appearance of rubber in the trunk. Do preventive treatments with fungicides to combat Phytophtora. The recommended products are Aliette WG , Alexin, etc.
How to prevent the browning of conifers?
- It controls the irrigation, both the quantity and the frequency to avoid the flooding; Also, do not forget that conifers that are more sensitive to excess irrigation will not require much water and should only be watered when necessary.
- Take care of the good drainage at the time of planting the conifersand if the soil is very heavy, or, too much water accumulates in it naturally, it is best not to plant the conifers there.
- Keep in mind the size that the plants will have in their adult phase to avoid asphyxiation of the roots.
- Make entrecavas to air the ground.
- It uses fertilizers with a high content of amino acids and nitrogen.
- Apply a fungicide suitable to treat and cure fungi.
Coniferous browning treatment
As I have told you before, there are some problems that are fundamental in the browning of conifers such as excessive irrigation, lack of magnesium and the phytophtora fungus. Therefore, then I share with you a video created by AKI DIY so you know how to deal with this problem: