The Nutrition of The Plants Need
Plants require 17 elements for normal growth. The nutrients that are most likely to limit plant growth are nitrogen, phosphorus, and potassium. Carbon, hydrogen, and oxygen are found in air and water. Nitrogen, potassium, magnesium, calcium, phosphorous, and sulfur are absorbed from the soil which this six elements are used in large amounts called macronutrients. There are eight include iron, zinc, molybdenum, manganese, boron, copper, cobalt, and chlorine elements that are used in much smaller amounts called micronutrients or trace elements.
Plants Food
Plants use water, carbon dioxide, elements from fertilizer, and energy from the sun to produce their own food. Synthetic (manufactured) and natural (also called organic) fertilizers provide nutrients for plant growth. Fertilizer is not plant food. And correct amount of fertilizer can promote healthy flower production and foliage growth
Corrective Measures
If a plant is not doing well they should fertilize to correct the situation. Fertilization may be helpful but only after the problem causing poor growth has been corrected. Do not assume that an application of fertilizer will quickly remedy any problem which is encountered, in many cases it can make existing problems worse. You should attempt to determine the specific cause in each situation and apply corrective measures. These problem of poor growth may be caused by inadequate soil aeration, moisture, or nutrients; adverse climatic conditions; incorrect pH; or disease.
Excessive Fertilizer
A moderate rate of growth and good, green color is desired for most woody plants. Excessive fertilizer application can decrease plant health and can lead to decline and death. Over application or incorrect application of fertilizer can contribute to polluting our rivers, streams, lakes, and estuaries. Excess fertilizer can increase the likelihood of some plant diseases. Fertilizing plants that have already outgrown their allotted space can only lead to more pruning.
Soil Test
A soil test provides the best indicator of elements that may need to be added to the soil to prevent nutrient problems. Ideally, a soil sample should be taken before trees are planted. Additional samples can be taken every 3 to 5 years thereafter to determine whether any nutrients are lacking.
Combination Use Fertilize
Both organic (naturally occurring) and inorganic (synthetic) fertilizers can be used to supply trees nutrients. Inorganic fertilizer is usually highly soluble and is more rapidly available to trees than organic fertilizer. Organic fertilizer takes time to break down and release nutrients more slowly. Organic fertilizer and inorganic fertilizer may be combined so that nutrients are available to trees rapidly and for an extended period of time. Some inorganic fertilizers are coated with various products to slow down the release of nutrients. These are called slow release fertilizers and are used to extend the length of time nutrients are available to trees.
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