In order to produce high-quality agricultural products to meet the needs of consumers, micronutrient fertilizer indispensable during the cultivation process. If we do the comparison, Thanh Ha lychee is more delicious than Luc Ngan lychee. Phuc Trach pomelo, Dien pomelo, Xoan orange, Canh orange are more delicious if grown in accordance with its location. So are pomelos, lychees, and oranges more delicious due to the soil?
Not only fruit trees but also rice, Hai Hau rice, Dien Bien rice branded because of its deliciousness, aroma and flexibility can only be explained by the soil here and the specific trace elements of this land. There is a saying in our folklore: “The potato is strange, the soil is familiar” This sentence can only be explained by the soil. It is also determined by the micro-quantity.
What is micronutrients?
Is a mixture of chemicals to provide all kinds of trace elements for plants. Sometimes they also add super trace elements, rare earths, growth stimulants.
The effect of micronutrient fertilizers
Trace fertilizers include a lot of metal elements such as: Copper, zinc, iron, manganese, … and non-metallic elements such as boron, selenium, etc. For plants, micronutrients participate as structural components. produce beneficial enzymes for plants. Enzymes are special biological catalysts of living things.
There are about 3000 different enzymes in the human body and less in plants, but thanks to enzymes, plants can flower and bear fruit in a stable manner. Enzymes or substances that make up them are micronutrients that help plants grow stronger, better resistant to pests and diseases. The lack of micronutrients in the soil will result in a marked decrease in yield and quality every year.
There are micronutrients in the soil, why do you still need to fertilize?
Although the soil contains many easily digestible trace elements and can provide enough (sometimes excess) for the needs of the plant, micronutrient fertilization is still effective because:
When the plant sprouts, the roots have not yet developed, mainly relying on the nutrients in the seed to nourish the sprout. Soaking seeds with a solution of micronutrients has an additional effect if there are not enough trace elements in the seeds. At certain periods, plants have a high demand for an element or an element with special physiological effects, called a super-crisis element. For example, the plant is needed for flowering and fruiting when the tree is about to flower, and it is needed for the early period because it affects the growth of the tree.
What types of fertilizers provide secondary nutrients (medium fertilizers)?
Actually does not produce intermediate fertilizer. Elements such as calcium, magnesium, and sulfur are often provided as by-products of macronutrients and soil amendments. Calcium is provided through fertilizers and fertilizers such as: phosphate fertilizer, superphosphate. Sulfur is supplied with superphosphate or ammonium sulfate.
Magnesium is abundant in fused phosphate fertilizers and potassium-magnesium fertilizers. In order to meet the plant’s needs for secondary elements, it must be based on the tree and the combination of fertilizers. Example: Need sulfur, magnesium. Add 1/2 superphosphate, 1/2 fused phosphate will give good results.
In what cases is it common to lack trace elements and trace elements?
Indented soil lacks copper, too acidic soil lacks molybdenum, soil is too alkaline or slightly acidic soil lacks zinc, boron, manganese, and iron. Too much manganese also causes iron deficiency. Red basalt soils lack sulfur. Soils fertilized with phosphorus are deficient in zinc. Soil rich in potassium lacks magnesium and sodium.
Which cases have been found to have serious micronutrient deficiencies affecting crop yield?
Lack of copper on indented soil causes white and fibrous rice leaves. Magnesium deficiency in pineapple growing areas due to high potassium fertilization causes pandan leaf boiling disease. Aluminum deficiency on tea plants in non-acidic soils. Lack of sulfur on coffee trees in the Central Highlands causes serious yield reductions.
Are there any cases where micronutrients kill plants or reduce yields?
The most common is spraying too high a concentration to cause leaf burn. Micro-spray should be according to the prescribed concentration. Should be sprayed in the cool afternoon.
On which crops have micro-spray been tested to be effective?
Tried spraying molybdenum for beans, fertilizing radishes. carrot, cabbage, zinc spray for peanut corn, magnesium spray for strawberry and coffee.
Is there a micronutrient common to all crops?
Each type of soil lacks a different substance, each plant requires a different trace element. Therefore, the use of micronutrients needs to be careful, based on the advice of experts.
How to fertilize micronutrients?
There are 3 commonly used methods: fertilizing directly into the soil (less used) or mixed with fertilizer, soaking seeds, turning and spraying on leaves.
Should micro-fertilizers be regularly sprayed?
Trace elements, in some cases have an effect on yield and quality. Therefore, after micro-fertilizing or micro-spraying fruit trees for 2 consecutive years, it should be stopped for 1-2 years before using again. With annual crops such as rice, corn, and peas, it can be sprayed continuously for many years until there is no effect. It should be noted that there are many cases of applying too much micronutrients, causing leaves to wilt, plants to die, especially young plants.
How to detect a plant lacking trace elements?
Appearance: The plant is slow growing, branched, little branched, leaves are small or deformed (leaves are not flat, veined or twisted, curled …) , big stem, too gritty and blowing buds…
Dressing. Based on the physical diagnosis, the tree and soil keys will determine which element is lacking. Use the method of spraying the leaves with the solution containing those elements and then observe the phenomena after 7-10 days.
Above is some information about micro-fertilizers, I hope you understand better