If you’d like, you can also use homemade compost on your avocado trees. Citrus trees have very similar nutritional needs, so citrus tree fertilizers work great for avocado trees and are often easier to find. If you plan on getting your fertilizer from a retailer, look for fertilizers that are labeled for avocado trees or citrus trees. If you’ve tested your soil and found it lacking, or if you’re seeing signs of deficiencies, then it’s time to fertilize your tree.
#Avocado plant seedling how to
The University of California Davis’s College of Agricultural and Environmental Sciences has a comprehensive spreadsheet that details how to spot the symptoms of deficiencies, as well as pest damage and diseases and what to do about them. The avocados will be smaller and more round than would normally be expected from avocado trees. Zinc deficiencies affect the avocados themselves. Nitrogen deficiencies also dampen fruit production you can expect to see less avocados in general and trees that drop leaves earlier than expected. With a nitrogen deficiency, veins of leaves turn yellow, while zinc deficiencies cause yellowing between the veins. Nitrogen and zinc deficiencies both lead to smaller, yellowing leaves. The sooner one is caught, the sooner it can be fixed. In that case, it’s important to keep a keen eye out for signs of a deficiency. That can lead to them use all the available nutrients, especially in poor soils. This can help avoid deficiencies early on, but avocado trees have fairly shallow roots.
joloei/Shutterstock How to spot a deficiencyīefore planting your avocado tree, you should do a simple soil test to determine your natural nutrient levels. Micronutrients such as boron, calcium, iron, magnesium, manganese, and zinc are equally important, and needed in smaller amounts. They aren’t necessarily the most important, but rather the three nutrients that are needed in the largest amount. For the average plant, nitrogen, phosphorus, and potassium are crucial.
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