Like other plants and vegetation, trees need nutrients to grow, maintain their structural integrity and flourish. If the soil, in which the tree is planted, lacks in nutrients, the tree runs the risk of losing its structural integrity and can likewise, fall prey to infection and insects. Besides impacting the health of the tree, nutrient deficient soil can also have an adverse affect on its aesthetic appeal. The substances required to nourish plants can be classified into two categories namely micronutrients and macronutrients, as per the amount essential for proper development.
Macronutrients are wanted by trees in a significantly greater measure than micronutrients. They assume a pivotal role in the growth process of the plants. Nitrogen, Phosphorus, and Magnesium are some prime examples of macronutrients. Besides enhanced growth, other benefits of macronutrients include better immunity and health. Micronutrients such as Manganese, Zinc, Iron, and Boron also play their part in plant growth and reproduction.
Trees planted in urban and suburban habitats frequently endure stressful conditions on the account of low moisture accessibility, soil compaction, pollution, construction, and a constant struggle with surrounding plants for nutrition. Manure applications may decrease, yet can’t wipe out the above mentioned natural hassles. It is, therefore, crucial to water the trees and keep them at safe distance from the nutrition sucking weeds. Tree pruning in Melbourne also assumes an integral role in tree maintenance.
The best way to find out the amount of fertilisation required is by means of a soil test. In a perfect world, a dirt specimen ought to be taken before the trees are planted. Extra samples can be taken 3 to 5 years from that point to figure out what all supplements are required. Soil evaluation kits used for this purpose are easily available in the market at reasonable prices.
Besides soil test, the shoot growth is a great way to check the nutrition level. Usually, if the shoot growth is less than 2 inches, it is advisable to fertilise the tree.
Foliage colour also serves as an index for gauging the need for fertilisation. Leaves that are pale in colour may manifest the necessity for fertilisation as these signs are typically found in those trees that lack proper nourishment. Be that as it may, it is important to note that in certain trees “off-color” leaves are normal.
As per the expert opinion, the ideal time to apply fertilisers is during spring. A vast majority of the trees undergo rapid growth through the spring season. The growth rate gradually slows down in the summers and subsequently in fall. For that reason precisely, it is prudent to provide adequate nutrients to the tree in the spring season. It is advisable not to fertilise the trees in autumn as there is a very high probability of stunning the tree into a metabolically active state just when the cold season sets in.
If a tree manifests signs of lack of nourishment such as moderate growth, then fertilisers can be used at any time in the course of the growing season. If you are fertilising the trees in the hot weather, it is vital to keep it well watered in order to prevent the salts from the fertiliser from building up and harming the tree’s roots.