Picture of zinc sulfate heptatic acid crystal, taken by Fertilizer Xiangjun
<h1 class="pgc-h-arrow-right" > why is zinc often used in corn? </h1>
Zinc is found in plants at lower levels, which we call trace elements, which generally account for a few hundred thousandths to a few parts per millionths of the weight of dry matter. Although the zinc content in the plant is very small, it has a greater effect: such as the "rice shrinkage seedlings", "zombie seedlings" and "sitting trees" of rice, the "white bud disease" and "albino seedlings" of corn, the "leaflet disease" of citrus and other fruit trees, and the "bronze disease" of oil tung are all related to the lack of zinc.
Some time ago, some farmers gave us feedback and found that there were some whitishing on the leaves of their own corn, which is what we commonly call albino seedlings. In addition to genetic and disease reasons, zinc deficiency in corn is an important cause of albino seedlings.
Corn is sensitive to zinc, plants are dwarfed when zinc is deficient, white stripes appear on the leaves of seedlings, "albino seedlings" appear, more obvious when 3-6 leaves, and the veins of the new young leaves are green, pale yellow or yellowish white, and the base of the leaves is white, commonly known as "white seedling" disease.
Later, it can be observed that the inter-veined stripes of the elderly leaves are lost, and a wide yellow to yellow-white band of green loss areas are formed between the main vein and the leaf margin, and in severe cases, they die in the form of large tan strips, the growth is hindered, the internodes become shorter, the plants are short, the fruit is less fruity, the bald tip is missing grains, and the yield is seriously reduced.
The development of white seedling disease in maize seedlings is also a symptom of zinc deficiency. Corn seedling stage zinc deficiency, new leaves in the lower and middle yellow white form white seedlings, also known as flower white seedlings, zinc deficiency after jointing, the lower half of the leaves appear yellow and white strips, translucent, like white silk or plastic film, wind blowing easy to tear, called flower and leaf stripe disease or white strip dry blight. The leaves in the middle and upper parts of the middle and late growth of maize lose green between veins, and appear pale yellow and light green stripes or striped yellow blocks. At the same time, it is also manifested as a dwarf plant, a small ear of fruit, and a bald tip.
Corn is more sensitive to zinc, and should generally be mixed with granular zinc fertilizer (zinc phosphate granules) and compound fertilizer when lowering the bottom fertilizer. If the bottom fertilizer does not have zinc fertilizer, then in the corn seedling stage to timely supplement zinc sulfate (generally zinc sulfate heptahydrate mainly), the commonly used method is foliar spraying, spray 1 time, can prevent the occurrence of corn albinism, spray 1-2 times, can alleviate the corn leaves have been white and yellow, promote corn to return to normal growth.
Phosphorus and potassium source library - 99.7% potassium dihydrogen phosphate crystal, fertilizer Xiangjun photographed
< h1 class="pgc-h-arrow-right" > the application of potassium dihydrogen phosphate on maize</h1>
Most farmers know that potassium dihydrogen phosphate has a high nutrient content, of which 52% of phosphorus pentoxide and 34% of potassium oxide are excellent in water solubility and have some excellent effects: promote flower bud differentiation, preserve flowers and fruits, improve pollination rate, color the swell, defend against dry hot winds, full of seed filling, anti-lodging and premature aging, cold and frost resistance, etc. It is no exaggeration to say that high-quality potassium dihydrogen phosphate is the magic weapon for crop yield increase!
Potassium dihydrogen phosphate phosphorus potassium can be used throughout the growth period of maize, especially in the middle and late stages, and potassium dihydrogen phosphate is sprayed during seed filling, and the yield increase effect is very significant.
Seed soaking: Soak the seeds in 0.2% potassium dihydrogen phosphate solution for 12 hours, dry and then sow. Spraying 0.2 to 0.3% potassium dihydrogen phosphate 2 to 3 times during the jointing stage of maize can increase the yield of maize by more than 10%.
Foliar spraying: About 10 days before the ear extraction, that is, the large horn mouth stage, the posthumous application of potassium dihydrogen phosphate, 200 grams of potassium dihydrogen phosphate mixed with water about 50 kg foliar spray. During the grouting period, 150 to 200 grams of potassium dihydrogen phosphate can be sprayed with 50 kg of water.
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<h1 class="pgc-h-arrow-right" > can potassium dihydrogen phosphate and zinc sulfate be used together? </h1>
People engaged in agriculture know that the cost of buying fertilizer is low or relatively low, but the labor cost of spraying medicine is relatively high, so some farmers want to add urea, potassium dihydrogen phosphate, boron fertilizer and other fertilizers in zinc fertilizer, which can comprehensively supplement nutrients and save a lot of manpower.
Potassium dihydrogen phosphate and zinc sulfate are commonly used foliar fertilizers in the corn planting process, potassium dihydrogen phosphate phosphorus potassium nutrient content is high, the use of corn seedlings can improve the resistance of corn plants, promote rooting, zinc sulfate can prevent albino seedlings. The question is, can potassium dihydrogen phosphate and zinc fertilizer be mixed? After all, the use of the two after mixing can save a lot of labor.
The primary mixture of zinc phosphate and potassium dihydrogen phosphate is opaque and milky white
Let's take a look at the picture of potassium dihydrogen phosphate and zinc sulfate mixed, I believe that after seeing the picture, you will never mix zinc sulfate and potassium dihydrogen phosphate again.
Zinc sulfate is added to the aqueous solution of potassium dihydrogen phosphate, and after full stirring, the solution will become turbid, and there will be flocculents, and it will be seriously delaminated for a long time. In fact, after the two fertilizers are mixed, the zinc ions will combine with the phosphate ions to form a zinc phosphate that is insoluble in water, and the fertilizer effect will be greatly weakened or even ineffective. Therefore, it is recommended that potassium dihydrogen phosphate and zinc sulfate are best used separately.
If potassium dihydrogen phosphate and zinc fertilizer must be mixed, it is recommended that zinc sulfate be replaced by EDTA chelated zinc, and EDTA chelated zinc can be mixed with potassium dihydrogen phosphate in any ratio, and it will not produce precipitation, and the absorption and utilization rate is also very high.
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<h1 class= "pgc-h-arrow-right" >can zinc sulfate and instant boron (sodium octaborate tetrahydrate) be mixed? </h1>
Can zinc sulfate be mixed with borax and sodium octaborate tetrahydrate? The answer is no. Zinc sulfate and borax, instant boron (sodium octaborate tetrahydrate) can not be mixed.
Zinc sulfate can be mixed with boric acid, but boric acid is a dangerous chemical and is generally difficult to buy on the market.
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<h1 class="pgc-h-arrow-right" > summarized above</h1>
Whether it is corn, soybeans, peanuts or fruit trees such as fruits and vegetables, citrus apples, etc., it is recommended that zinc sulfate and potassium dihydrogen phosphate must be sprayed separately, unless potassium dihydrogen phosphate and EDTA chelated zinc are mixed.
Zinc sulfate and borax, instant boron can not be mixed at the same time, must be staggered use.
<h1 class="pgc-h-arrow-right" > teach you a little trick</h1>
When we spray zinc sulfate on the foliar surface of crops, in order to improve the utilization rate, a little urea can be added, which can promote the absorption and operation of zinc fertilizer, and greatly improve the symptoms of zinc deficiency in crops.
In the corn planting process, it can be used together with Kendol - higher activity brassinolide, which can better promote the growth of corn and has a strong effect of promoting growth, disease resistance and stress.
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