Calcium and Boric Acid Spray in Apple Orchard: A Quick Guide
Maintaining healthy apple orchards is necessary for the desired fruit production. To achieve this, apple growers must keep various factors in check, including insect pests, diseases, and proper nutrient uptake. Two commonly used sprays in apple orchards for nutrient management are calcium and boric acid. This article provides a brief overview of these two sprays, their benefits, and precautions to take while using them.
Calcium Spray
Calcium is a vital nutrient for apple tree growth. It is required in large amounts and helps strengthen the cell walls and reduce the incidence of common plant disorders. The use of calcium spray in orchards is essential as it helps keep the tree healthy and reduces the need for chemicals in the future.
The application of calcium spray during the growth phase is necessary, as it is essential for the formation of healthy plants. Applying too early or too late can lead to the calcium’s reduced effectiveness, and leaves or fruits cannot absorb it. The recommended time to spray is when fruits are approximately 1/4 – 1/2 inch size, about two weeks after bloom. The typical dosage for calcium spray is 1-2 pounds of calcium nitrate or calcium chloride powder mixed with water per 100 gallons. Note that it is best to distribute its dosage uniformly throughout the growing season.
Boric Acid Spray
Boric acid is a naturally occurring compound that is widely used as an insecticide. Apart from being an insecticide, boric acid is also useful in fruit production. It helps thicken the cell wall, enhances fruit quality and prolongs shelf life. The application of boric acid spray is used to supplement boron in the soil, which is necessary for the fruit to grow healthily.
Boron is a micronutrient and an essential trace element required in small amounts. Its deficiency can lead to various plant growth symptoms. The best time to apply boric acid spray is before the tree blossoms. Boric acid is most effective when applied at a rate of 1-2 ounces per tree, annually. This amount is enough to supplement boron uptake and aid in fruit production.
Precautions to take while using Calcium and Boric Acid Spray
Calcium and boric acid sprays are an essential part of orchard management. However, care must be taken not to apply them excessively or too late/ early in the season, as this could cause fruit damage. It is also critical to ensure that the mixing procedure for the sprays is followed, so the desired impact is achieved. Further, irrigating the trees after the spray helps the tree to absorb the spray better.
Summary
Calcium and boric acid sprays are useful in maintaining healthy apple orchards. Their applications strengthen the cell walls, boost nutrient uptake and prolong shelf-life. When using these sprays, it is necessary to follow the instructions, apply them in the correct dosage, and at the right time. This helps achieve the desired results, and healthy apple plants are maintained.