why do plants need fertilizer to grow

How Do Plants Absorb Fertilizers? A plant can through two ways, one is by the root system, the other is through foliage dressing. Adding a slow-release fertilizer during the initial planting is a good choice. Slow-release fertilizer allows a certain amount of fertilizer chemicals to be absorbed at one time. Fertilizer Benefits When plants growing, they need some necessary nutrients for proper growth. Adding fertilizers can ensure the plants receive the nutrients they need at planting time and during the growing period. It will not only ensure the plants receives the proper amount of nutrients, but ensures their lush growth. Fertilizers can have different benefits during plants different growing period. 1. Boosting Growth. Fertilizers can encourage the rapid growth of plants. is considered as a growth booster and a greening agent. So fertilizers which have rich nitrogen are particularly useful for plant growth. 2. Acceleration of Maturation. The Phosphorus nutrient in fertilizers is mainly responsible for plant maturity.

So planters who want to speed up their plant's maturity should apply phosphorus-rich fertilizers, as this. 3. Enhance Resistance. Potassium can strengthen the stalks and straws of plants, enabling them to hold more water and become more resistant to drought conditions. So fertilizers can improve seed and fruit quality, producing greater produce and better earnings. 4. Conditioning Soil. Proper application of fertilizers can restore the natural chemical composition of the soil. Overdependence on a single type of fertilizer can alter the natural nutrient balance, resulting in poor soil conditions. Organic fertilizers can help improve the chemical balance of the soil can be improved by using. Besides the above general effects on plant growth, some fertilizers can satisfy the specific needs of certain plants. These fertilizers which have special purpose fertilizers are typically used when soil condition is required.
The three essential elements that all plants need are nitrogen, phosphorus, and potassium or N-P-K, the proportions of which are stated as numbers on the package.

For instance, a general-purpose fertilizer labeled 20-20-20 means that each chemical element N, P, and K contributes 20 percent by weight to the total formula (the remaining 40 percent is composed of inert materials and trace elements). The element percentages are offered in varying proportions to suit different fertil izer needs. If you are looking to boost flower production, you want a mix like 15-30-15, which is high in flower-developing phosphorus. If you want to green up your lawn, choose a mix like 25-6-4, which is high in nitrogen. Many fertilizers are formulated for specific plants like roses, bulbs, or vegetables. Be sure to check the label for the N-P-K ratio, as you may be able to use a general fertilizer with close to the same nutrient percentages but at a lower price. In addition to N-P-K, most fertilizers contain traces of other elements important to plant health. Some trace elements are more important than others, but each nourishes a plant in its own way.

The main trace elements in fertilizers are calcium, magnesium, iron, copper, manganese, zinc, molybdenum, boron, and sulfur (you can usually purchase these items individually as well). If any of these elements are lacking, a plant may show characteristic deficiency symptoms. An iron deficiency, for instance, causes chlorosis (yellow leaves with green veins), which is easily corrected with a dose of chelated iron. There are quite a number of fertilizers available today, both organic (plant and animal derived) and inorganic (chemically derived). While the majority are commercially produced inorganic fertilizers, there are a few options for the organic gardener. Many rely on the old standbys animal manure and compost which, although organic and good for soil building, actually contain few nutrients. For flower and fruit development, bonemeal with a high phosphorus count is the organic of choice, while blood meal is a good source of nitrogen.

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