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What effect does urea fertilizer have on plants?

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What effect does urea fertilizer have on plants?

In order for plants to grow, develop and achieve a high rate of fertilizer application, it is an extremely important and necessary step. Urea fertilizer is one of the most popular nitrogenous fertilizers on the market today. So what is urea? What is the effect of urea fertilizer? with plants. To answer the above questions, please read with Agri through the article below.

  1. What is urea?

As a fairly popular nitrogenous fertilizer, accounting for a large share of the market today, it is applied to provide the necessary amount of nitrogen for the growth and development of plants. With the chemical formula CO(NH2)2, in the form of crystals, round, white granules, containing 45-47% nitrogen (N), accounting for more than 60% of nitrogen fertilizers produced and consumed in the world. Is the fertilizer with the highest nitrogen ratio today, creating conditions for the growth and development of plants.

Urea fertilizer helps provide nitrogen for the best growth
Urea fertilizer helps provide nitrogen for the best growth

Urea fertilizer is available in the form of white crystals, easy to use, has strong hygroscopicity, dissolves quickly in water and converts into nitrate (NO3-) and ammonium (NH4+) forms for easy absorption and use by plants. loss and loss of protein.

With strong hygroscopic properties, the preservation needs to be paid more attention. Fertilizer can occur the phenomenon of forming Blurea during the production process, which is when two urea molecules accidentally clump together, which is harmful to plants when spraying urea on leaves. If the percentage of that substance is higher than the standard level (no more than 1.5% Blurea according to Vietnamese standards) the plant can be poisoned.

The physical properties to know of urea fertilizer:

  • Chemical formula: CO(NH2)2
  • Purity: ≥ 99.5%
  • Humidity: 0.5%
  • Melting temperature: 133°C
  • Water solubility: 1080g/1 liter of water at 20°C
  • Biurea: 0.99%
  1. Types of urea on the market

Urea fertilizer has 2 types in the form of pellets like fish eggs and in the form of round granules. In essence, these two types are similar to supplement nitrogen for plants and the quality is considered to be similar on the market today.

The pellets, as small as fish eggs, are chosen by many people to be used in farming and agricultural production. Because this type has an added moisture-proof component, it is easy to store during transportation or in environments with high humidity.

There are 2 main types of urea on the market
There are 2 main types of urea on the market

The type of urea is white crystalline round granules, easily soluble in water. Difficult to store in environments with high humidity due to the disadvantage of strong hygroscopicity.

  1. The technique of fertilizing urea ensures efficiency for plants

  • Urea fertilizer has high adaptability in many different climatic and environmental conditions. With different soil properties, different types of crops with urea can be effective. And especially adapted to fertilize on acidic soils.
  • Urea fertilizers are often used as a top dressing due to their high solubility and adaptability. However, to avoid ammonium on the ground, farmers should bury manure in the soil. Or to allow the fertilizer to be absorbed longer, we can dilute the fertilizer into a solution with a concentration (0.5 – 1.5%) sprayed directly on the leaves. To optimize the effectiveness of the fertilizer should be applied in cool weather.
  • Avoid applying too little or too much urea, which will affect plant health and reduce crop productivity. Excessive nitrogen fertilization will make plants weak and prone to fall, susceptible to pest attack and pollute the environment. In addition, if crops are fertilized with too much nitrogen, agricultural products will contain a lot of nitrates, which adversely affect the health of users.
  • It is not recommended to apply urea with lime, even though it can be applied to acidic soil. Because the chemical reaction will harden the soil, losing the effect of manure. To avoid waste, you can apply lime before or wait a sufficient time before applying urea.
  • In case the amount of Blurea in the manure exceeds the allowable threshold, which can cause the plant to be poisoned, to overcome it, it is necessary to mix it with powdered soil for 2-3 days and then apply it, Blurea will hydrolyze and become ammonium carbonate.
  • Should mix some other fertilizers when fertilizing to balance the nutrients for plants because urea fertilizer has a high nutrient content.
  • The early stage when the tree is thriving and the fruiting stage is the right time to fertilize the tree.

Notes on storage: Do not expose to sunlight and store in polyethylene bags. Because manure is very easy to decompose and evaporate when exposed to air and sunlight. Once the bag has been opened, it should be used up within a short period of time.

  1. Application of urea fertilizer

In animal husbandry, this fertilizer is used directly by adding to the diets of pigs and buffaloes and cows. In ruminants in the rumen, there are external symbiotic microorganisms that help break down urea and cellulose.

Note for use only in animals with fully developed digestive organs. Absolutely do not dilute for animals to drink because it can cause poisoning.

Microorganisms will grow stronger with nutrients from urea and when it reaches the stomach, the star fruit will be digested, the animal’s body will have more nutritional protein sources.

With the sharing from this article, hope to bring this information useful to readers. Help readers answer the question “what is urea?” and things to know when using urea.

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