What fertilizer is best for poplar trees?

Poplar is a tall tree that grows quickly and has lush branches and leaves. It is often used for roadside greening, riverbank protection and forest belt construction. However, to maintain rapid growth and good health of poplars, proper fertilization is crucial. So what kind of fertilizer is best for poplar trees? Let’s learn more about it below.

What fertilizer is best for poplar trees?

When fertilizing poplar trees, the following fertilizers are recommended:

1. Nitrogen fertilizer: Poplars have a large demand for nitrogen during their growth. Nitrogen fertilizer can promote the growth of poplars, especially the growth of leaves, making the leaves greener.

2. Compound fertilizer : Compound fertilizer contains a variety of nutrients, is nutritionally balanced, and has a long-lasting fertilizer effect, which can meet the poplar's needs for multiple elements during its growth process.

3. Organic fertilizer : Organic fertilizer can improve soil structure, increase soil fertility, and provide a variety of nutrients needed for poplar growth, such as decomposed farmyard manure and compost.

4. Green manure: Green manure can improve soil fertility, improve soil structure, and promote the growth of poplar trees, such as Amorpha fruticosa green manure.

How to fertilize poplar trees?

1. Base fertilizer

Base fertilizer is usually applied after the poplar leaves fall in autumn. You can apply 1,000 kg of decomposed farmyard manure or more than 2,000 kg of green manure, combined with pruning, weeding and removal of debris.

2. Topdressing

1. Topdressing time

Top dressing of poplars is generally divided into two times a year, the first time in April-May, and the second time in July, but no later than early August, otherwise the degree of lignification will be poor.

2. Types of topdressing

Top dressing is generally based on nitrogen fertilizer. 15 kg of urea and 30 kg of ammonium carbon can be applied per mu each year, with half of the annual fertilizer application amount applied each time. For poplars under 5 years old, 250-400 grams of urea should be applied each time, and for large trees over 6 years old, the application amount is 500-1000 grams.

3. Fertilization method

It is more common to apply it in holes. Dig four holes evenly around the poplar tree, apply fertilizer evenly and then cover it. The depth of fertilization should be around 15-30 cm depending on the age of the tree.

3. Foliar spraying

During the growth of poplar trees, nutrients can be supplemented by spraying them on the leaves. Foliar spraying is generally carried out in spring and summer, and foliar fertilizers containing nutrients such as nitrogen, phosphorus and potassium can be used for spraying.

In general, fertilizing poplar trees requires a lot of attention. The above is an introduction to the types and methods of fertilization. However, when applying fertilizer, appropriate adjustments should be made based on actual conditions and soil conditions to ensure that the fertilizer can fully play its role.