Hello friends. I am Akun, a new farmer who focuses on the sharing of modern agriculture. Lime can be applied to field preparation, soil improvement, is one of the indispensable fertilizers in cultivation. However, if used improperly, it may become a cause of soil environmental degradation. Therefore, at this moment, I will briefly explain to you the precautions in the use of lime, the role and type of lime, etc.
The use of lime for field preparation and soil improvement purposes
Various types of lime are formed by burning shell deposits or petrification, and are applied by adding water. Lime is essential in agricultural land preparation and soil improvement, but its scope is wide. First, let's take a closer look at the purpose of spraying lime.
<h1 class="pgc-h-arrow-right" data-track="5" > nutritional supplement</h1>
The calcium contained in lime is an indispensable nutrient for the growth of crops such as vegetables, and if it is insufficient, vegetable growth will continue to deteriorate. For example, the appearance of black spots on potatoes and the blackness of the center of Chinese cabbage are symptoms of calcium deficiency.
Calcium has the property of being difficult to move inside the plant, so it is impossible to replenish the calcium that is lacking inside. Therefore, lime must be mixed with the soil to replenish the calcium needed for soil crops to grow.
<h1 class="pgc-h-arrow-right" data-track="8" > adjust the pH</h1>
Soil has an index called pH, which indicates pH. This pH needs to be properly controlled in order for the crop to grow smoothly.
For example, for pods and spinach, slightly acidic to neutral soils with a pH of 6.5 to 7.0 are appropriate, while for sweet potatoes (sweet potatoes) and potatoes (potatoes), weakly acidic soils with pHs of 5.5 to 6.0 are appropriate. In terms of soil improvement, we want to maintain neutrality from a pH of 6.0 to 6.5 with weak acidity, which is said to help improve the optimal nutrient uptake of nutrients by crops.
However, due to the effects of rain and crop uptake, soils tend to become acidic and deteriorate in condition if left untreated. Therefore, in order to keep the pH of the soil that changes all the time within the appropriate range, lime containing a large amount of alkali is used.
How to use lime for land preparation and soil improvement in the field
This does not mean that you should use lime heavily. It is necessary to know the correct quantity and how to use it correctly.
<h1 class="pgc-h-arrow-right" data-track="14" >, fully cultivate the soil</h1>
Plow well before sprinkling lime on the soil. Since lime is applied before fertilization, it is planted deeper than the last layer of fertilized soil. After weeding, the planting depth is 20-30 cm or more. Then, the fertilizer-free soil is improved composted and the soil is mixed.
<h1 class="pgc-h-arrow-right" data-track="16" > check the pH of the soil and then sprinkle lime. </h1>
Lime is applied after the field is fully tilled, but before spraying, the pH of the soil is first checked.
In recent years, there have been many products for indirect measurements (products whose solutions are coated on the soil to check for color changes) and instruments that are directly inserted into the measurements, so if you need to repeat the measurements, you can buy these spares.
Soil Detector Nutrient Detector ¥58 Purchase
Another method is to measure with pH dipsticks. The measurement method is to collect soil at a depth of 5 to 10 cm from the ground, and mix the soil and water thoroughly according to the ratio of 1:2.5. Let stand for a few minutes until the supernatant is clear, soak the pH dip strip in clean water and compare it with the color sample.
The lime is then sprayed according to the pH. Sprinkle 100 g per square meter (no more than 200 g per square meter at 1 pH) as a guide to mix the soil evenly.
Since it takes several days to neutralize the soil, it is recommended that the hydrated lime application be about 3-5 days in advance, the magnesium lime application about 7 days in advance, and the organic lime application about 10 days in advance, check whether the pH has shifted to neutral.
In addition, when lime and fertilizer are used at the same time, the ammonia produced causes the crop to be hypoxic, so lime application should be carried out 1-2 weeks before sowing.
<h1 class="pgc-h-arrow-right" data-track="23" > type of lime used for soil preparation and soil improvement</h1>
Although collectively referred to as "lime", the properties can vary depending on the processing method, so it is important to understand the characteristics of each one in advance in order to correctly distinguish between uses. In order to determine the lime required for your own field (field), learn about the types and characteristics of lime described below.
<h1 class="pgc-h-arrow-right" data-track="25" > slaked lime</h1>
Limestone is a lime made of broken and fired limestone, made of water, and the main component is calcium hydroxide. Saturated aqueous solution is alkaline, pH = 12.4, so it is used for soil improvement with high acidity. In addition, the effect of soil disinfection is also expected.
<h1 class="pgc-h-arrow-right" data-track="27" > magnesium lime</h1>
Lime, which contains magnesium carbonate and calcium carbonate, has the effect of making the soil almost alkaline. In addition, it also has the effect of strengthening the root system of crops and promoting the formation of chlorophyll. If the yellow leaves are obvious, sprinkle about 100g of magnesium lime per square meter as a guide.
<h1 class="pgc-h-arrow-right" data-track="29" > organic lime</h1>
Organic lime is the product of roasting shells, etc., and calcium carbonate is the main component. Its effect is milder than that of limestone processing, so it does not have to be used regardless of the time and order of entry into the soil. Not only is the pH adjusted, but it also improves the ventilation and drainage of the soil, and it is easy for beginners to apply fertilizer.
Use of lime for land preparation and field soil improvement
Precautions
The choice of the amount and type of lime is important. The appropriate quantity and type have been said above, but I will emphasize the precautions again.
<h1 class="pgc-h-arrow-right" data-track="33" > pay attention to the amount of spray</h1>
If you continue to spray lime on the soil, your crops will not be able to absorb nutrients and moisture. In addition, there are problems of loss of soil structural balance, hardening of the soil, and obstruction of growth. As mentioned above, it is important to measure the pH of the soil and know the amount required before spraying the lime.
If overused, measures should be taken, such as planting lime-absorbing crops such as green beans and tomatoes, and increasing the buffering effect of the soil with compost.
<h1 class="pgc-h-arrow-right" data-track="36" > select the correct type</h1>
When trying to use lime neutralizing soil, the appropriate type should be selected according to the conditions of use and the timing of use.
For example, for the first time, disinfect the soil with hydrated lime. If you are a crop, choosing to have less effect on magnesium calcium and organic lime can reduce the danger. The best distinction is based on soil conditions and the growth of crops.
Controlling the "lime" of soil pH is essential in the planting process, but the key is to properly recognize, understand and use it. It is used for land preparation and soil improvement, thereby increasing the yield of crops.