After the apple fruit has developed for 20 days following the walnut stage, it is important to treat the plant with a targeted spray to ensure the health and vitality of the fruit. At this stage of development, the apple fruit is vulnerable to a number of different pests and diseases that can cause damage to both the fruit and the plant as a whole.
One of the primary concerns at this stage of development is the presence of fungal diseases such as apple scab. This disease can cause unsightly scars on the fruit and weaken the plant, making it more susceptible to other pests and diseases. To combat this, it is important to apply a targeted fungicide spray to the plant, focusing on the leaves and fruit.
Another common issue that can arise at this stage of development is the presence of insect pests such as aphids or mites. These pests can damage the fruit and weaken the plant, leading to reduced yields and poor quality crops. To prevent this, it is important to apply an insecticide spray to the plant, focusing on the areas where the pests are most likely to congregate.
When selecting a spray to use on your apple plant, it is important to choose a product that is specifically designed for the stage of development that your fruit is in. Some products may be too harsh for young fruit, while others may not be effective against more mature fruit. Consult with a professional or do your own research to determine the best product for your specific situation.
Additionally, it is important to follow all instructions carefully when applying the spray. This includes identifying the correct dosage, application method, and timing. Failure to follow these instructions can result in ineffective treatment, damage to the plant or fruit, and potential harm to the environment.
In conclusion, the period of time 20 days after the walnut stage in apple plant development is a critical time for plant health and fruit development. By applying a targeted fungicide and insecticide spray, you can help to prevent a number of common pests and diseases that can harm both the fruit and the plant. Remember to choose the right product and follow all instructions carefully to achieve the best results.