When chemical fertilizers into the soil. It has lost more than half. For nitrogen And potassium The Phosphorus Plants attract utilized only up to 10 per cent of the amount put into the ground. The total phosphorus Reacts with the soil A water-soluble compounds difficult. Plants are not attracted to So the fertilizer into the soil. So that the plant can be most attracted to and loss. Minimal waste Therefore it is important that the same formula, the same type of fertilizer into the soil, using different plants to utilize nitrogen fertilizer is not the same as putting a sow will give different results from fertilizer. Sprinkle put a line or a spot near the plant where chemical fertilizers to be effective, there should be guidelines. The fertilizer should adhere as follows: (1) the type of fertilizer used properly, (2) use of fertilizer in the right amount (3) fertilizer plants, while the plants need (4) fertilizer plant occupies. The plant can be tempting to use an easy and fast (1) the type of fertilizer used properly use fertilizers to correct it mean formula and ratio of nutrients in the fertilizer. Chemical fertilizers have these three. Vary widely fertilizer formula. Or sometimes called the "fertilizer grade" refers to the write nutrients. Available in chemical fertilizers By telling is the percentage of By weight of total nitrogen (N) of phosphorus (P2 O5) and water-soluble potassium (K2O) fertilizer formulas are written on the package of fertilizer. Clearly 20-10-5 as the first number is the amount of nitrogen that is 20 kg heavier volume number two said. Phosphorus contained 10 kilograms number, a third the amount of potassium, soluble, is 5 kg, nutrients, all 35 kilos of fertilizer weighs 100 kg and is known as the international number is the first nitrogen intermediates is. The final phosphorus, potassium is not the same switch. So no need to write letters marked on soil nutrient types of NP and K nutrients in fertilizer input. It has to be an element NP and K, but if soil nutrient N and P, the K in the soil naturally enough already nutrients in the manure, it should be, but N and P only such soils in the region which lack N. and P is the most used fertilizer in rice paddies but we are only N and P fertilizer such as 18-46-0, 28-28-0, 20-20-0 and 16-20-0, etc., for "ratio" of. Fertilizer is a comparison between the ratio of nitrogen, phosphorus and potassium in the fertilizer formula fertilizer ratio tells a little irrational numbers. The nitrogen, phosphorus (P2 O5) and potassium (K2 O) of formula fertilizer such as 16-16-8 as the ratio of 2: 2: 1 by dividing all the eight 20-10-5 ratio of 4: 2: 1. the division throughout the five that fertilizer formulas. The same ratio will vary the amount of nutrients as well. Available in fertilizer such as 10-10-10 formula contains nutrients including NPK fertilizers, heavy weight 30 kg, 100 kg of 20-20-20 fertilizer nutrients in manure include heavy 60 kg heavier than 100 kilograms of fertilizer tripled first. Fertilizers with the same ratio Will tell you that The same type of fertilizer Can be used interchangeably as if fertilizers are 10-10-10 at the rate of 50 kg / ha of 20-20-20 fertilizer can be used as fertilizer, but this has more nutrients included would have to reduce rates. The less is only 25 kg / ha of nutrients that otherwise would be equal to the ratio between the chemical fertilizer N: P: K varies depending on the type of plants to be used. And the land with the NP and K nutrient difference. In other words, it is Before using fertilizer correctly. It must be known soil And cultivated plants known before. This is because each soil type and each will have a different nutrient fertilizers in the soil. The different types of crops grown. Or even different plant life. NPK nutrients it needs to grow in volume and proportion. And create different compositions is very much the same level of nutrients in the soil that benefit is how much the plant. You can check this by sending a soil sample that is representative of the field itself. The analysis of chemical fertilizers with a high ratio of N, P and K when compared with the often used as fertilizer, speeding up the leaves for leaf vegetable. Or accelerate the growth of the tree. And urged the plants grow faster in the early stages of growth. In severe cases, the land of N, P and K in the soil medium. Or relatively high The ratio of N fertilizer use is high, it will adjust the benefit of NPK nutrients in the soil suitable for planting crops better. Or in the case of soil in the Northeast. And southern Thailand The benefit of K in the soil is relatively low. Compared to soil, fertilizer, so the region was recommended in the Northeast. South and K should be included, but was lower than the N and P, as ratio 2: 2: 1 as the formula 16-16- 8 or 2: 2: 1 instead of 16, for example 18-12-6 formula. 20-0 20-20-0 as fertilizer or farm in the region. As follows:
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