There are a number of possible causes of grass yellow patches. These include too little water, too much fertiliser, and lack of nutrients. They can also be caused by pets and local wildlife. To determine which cause is the most common, read on. Below, we'll examine 14 of the most common causes.
Grey Leaf Spot
Grey leaf spot, or GLS, on grass yellow spots is a fungus that attacks the grass's leaves. Fungicides, such as Chlorothalonil, can prevent the disease from spreading. They should be applied on a preventative rate and according to label instructions. When applying fungicides, it is important to rotate between groups of chemicals to prevent fungicide resistance.
The symptoms of grey leaf spot usually start out as small spots on the blades and enlarge into larger oval or elongated areas, sometimes surrounded by a yellow halo and general chlorosis. In some cases, the blades become blighted from the tip downward, and the leaf tips can turn brown. Fungicides for gray leaf spot are only effective if they are applied early enough.
Chewing Insects
If you're concerned about the appearance of yellow patches in your lawn, you might want to try identifying the culprit. Chinch bugs are tiny insects, but they can do a lot of damage to your lawn if left unchecked. Luckily, there are several effective home remedies to get rid of these pests.
One type of lawn insecticide, bifenthrin, can kill the problem. This product works by attacking grubs and other insects that feed on grass. It can even kill chewing insects. Another option is to apply a fertilizer containing bifenthrin, which is safe to apply to your lawn.
Under-Watering
A lawn that has yellow spots often indicates that it's not receiving the correct amount of water. Fortunately, there are some simple solutions for this common problem. First, try to determine the root cause of the problem. In some cases, yellow spots on a lawn can be caused by compaction or weed competition. You can also try to water less frequently for a while. This will encourage the root system to grow deep into the soil.
Another cause of yellow spots on grass is an insect infestation. These insects feed on the roots of the grass and can cause a lawn to appear dead and yellow. However, it can be difficult to tell if these insects are the cause. You can check for this by digging up a section of the lawn and examining the turf and soil. Alternatively, you can cut a flap in the turf to see the roots. If the grass yellow spots are caused by insects, you can replace the turf with a new one.
Dog Urine
Dog urine contains nitrogen-containing compounds and their associated salts, which can burn and damage your grass. The solution to dog urine-induced lawn burn is to reduce the nitrogen in your lawn through watering. Alternatively, you can treat the affected patches to break up the soil. However, this solution may not be effective in all cases.
Unlike female dogs, which tend to squat more frequently, male dogs are less likely to leave urine spots on grass. This is because male dogs generally mark their territory around multiple areas and upright objects. The problem is a common one, but it can be easily prevented. First of all, take your dog outside on a leash. This will allow you to monitor where your pet urinates and not allow them to urinate in the same area over again.