Fertilizers to increase sunflower yields and herbicides to control weeds



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When growing several sunflowers on your own plot, there is usually no need to specifically use sunflower herbicides and other chemicals. It is enough to provide the plants with minimal care, watering and weeding in order to enjoy fresh homemade seeds by the end of summer.

Weed control with herbicides

In agricultural farms specializing in the cultivation of sunflower on an industrial scale, the use of chemicals and regular fertilization becomes necessary, otherwise the yield of sunflowers will be low and the activities of the farms will be unprofitable.

To achieve a good harvest, farmers have to not only diligently observe crop rotation and properly sow, but also timely feed the sunflower with various mineral and organic fertilizers, and also fight weeds, preventing their spread.

To achieve a good harvest, farmers have to feed sunflower seeds in a timely manner.

The peculiarity of the sunflower is that at the initial stage of development it grows very slowly, and the weeds manage to fill all the free space, causing great harm to the crops. The bulk of the water, minerals and sun rays goes to weeds, which is why young sunflower seedlings stretch out and become thinner. In addition, weeds contribute to the spread of most sunflower diseases and pests.

Sunflower fertilizer video

The greatest attention should be paid to weed control in the first month after sowing sunflower seeds. When sunflowers develop a rudimentary basket (in the phase of three to five true leaves), it is especially important for the plants to get enough nutrients and water from the soil. Weeds cause great damage to sunflower planting also in the phase of flowering and seed filling. Sunflowers become competitive to weeds after the formation of the fifth leaf.

Mechanical processing of fields can lead to soil compaction, loss of moisture, a decrease in crop density and stimulation of weeds to regrow. The introduction of soil herbicides before and during sowing, under harrowing and after germination is much more effective. Or a combination of mechanical treatment of row spacings with belt spraying of sunflower rows with herbicides.

The greatest attention should be paid to weed control in the first month after sowing sunflower seeds.

To prevent the emergence of annual weeds, you can use Syngenta's soil herbicides: Gardo Gold, Fuzilad Forte, Gezagard, Zellek-Super, Trophy 90... The drug helps well against perennial weeds. Hurricane Forte.

Fertilizers for sunflower: timing and application rules

Depending on the phase of development, the sunflower needs feeding to varying degrees. Knowing what fertilizers for sunflower, in what quantity and when to apply, you can achieve a significant increase in yield.

    Video about growing sunflower using no-till technology

  • In the initial phase of growth, sunflower seedlings need nitrogen, due to which large leaves are formed in plants, more flowers are laid, a reserve of protein is accumulated, which is necessary in the future for seeds. An excess of nitrogen in sunflower reduces the resistance to lodging, and the maturation of seeds is delayed. It is preferable to apply nitrogen fertilizers in the form of calcium-ammonium nitrate, due to the fact that urea decomposes more slowly.
  • Sunflower needs no less potassium, with a lack of which the leaves of the sunflower begin to bend upward, chlorosis forms at the edges of the leaves.
  • IN phosphorus sunflower has a relatively low demand, but its introduction is necessary throughout the entire growing period. Thanks to phosphorus fertilizers, the root system and reproductive organs of the sunflower develop better, and the resistance to drought increases. Phosphorus is absorbed from the soil by sunflower and after flowering, gradually accumulating in the seeds - ripe seeds contain about 75% of the total absorbed phosphorus.
  • Of particular importance in the formation of sunflower flowers is boron: with its lack, the flowers may not tie at all, or the baskets will deform, and only sterile flowers will be obtained. Boron deficiency can be judged by the appearance of blistering curvatures at the edges of the leaves of sunflowers and by the formation of cracks in the stem.

Sunflower has a relatively low need for phosphorus, but it must be added throughout the entire growing period.

It is most effective to apply mineral and organic fertilizers in the fall during the plowing of the fall. The local belt method of fertilizing in spring together with sowing seeds gives less result, since organic fertilizers take too long to decompose, and mineral fertilizers can get into the top layer of the soil, from where plants will assimilate them worse. Under pre-sowing cultivation, it makes sense to apply nitrogen fertilizers for sunflower.


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Fungicides - preparations for the prevention and treatment of plant diseases

Plant growth stimulants - substances promoting the development of the root system and accelerating plant growth.

Disinfectants - chemical preparations intended for the treatment of seed and planting material in order to protect them from damage by soil pests and from being affected by various diseases.

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When can the husk be used as a fertilizer?

Ash obtained from burning sunflower husks is useful for almost all vegetables. Before plowing the field, three kilograms of ash are applied per ten square meters. For tomatoes, peppers and eggplants, a kilogram will be enough. Before planting legumes, beets, radishes, 250 grams of ash are added per square meter, and for cabbage and garlic - 500 grams per square meter.

After that, the beds are dug up. When planting tomato seedlings, a handful of sunflower husk ash is added to each hole. Natural fertilizer is also useful for grapes. It is added to the pits when planting berries, used as a top dressing during the growing season at 250 grams per square meter.

For potatoes, ash is used not only during planting a vegetable, but also when hilling a vegetable, pouring two tablespoons under a bush.

If you need to get rid of caterpillars on cabbage, aphids on bushes, then a glass of ash is poured with ten liters of water, insisted for ten hours and the plants are sprayed in the early morning. And the larvae of the Colorado potato beetle will disappear if they are sprinkled with dry ash. Slugs don't like this remedy either. Sunflower ash is one of the sources of potassium. It is actively used as a fertilizer.


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ClearField technology (open field)

Only sunflower hybrids that are resistant to the Eurolighting preparation, giving a high yield, are suitable for growing, these are varieties: Arakar, Limit, NK Tristan, Fragment and others, bred by traditional breeding methods. The herbicide has a systemic effect on ragweed, thistle, cablewort, broomrape and other one- and perennial dicotyledonous and cereal weeds. By the way, when sowing a crop earlier than usual, without waiting for the soil to warm up to 10-12 degrees C, you can accumulate up to 30 mm of moisture in the soil by the time the sunflower begins to grow, in 7-10 days.

The advantages of using ClearField technology with Eurolighting herbicide are:

  1. Independence from precipitation (the agent acts through weed leaves and for a long time through the soil).
  2. A wide range of destroyed plants, including broomrape, which is dangerous for sunflowers.
  3. It allows you to work the soil to a minimum or not at all.
  4. One application is enough for the entire growing season.
  5. Has a high speed of application and requires a minimum of costs.

The simultaneous use of the preparations Eurolighting, Kaptor and others provokes strong phytotoxicity of sunflower. The problem of weed planting in this case disappears, but the development of plants, according to agronomists, is greatly dulled. The drug Eurolighting Plus has a milder effect on them, the active ingredients of which are Imazamox (16.5 g / l) and Imazapir (7.5 g / l).

Sunflower, like any crop, needs herbicides if you are serious about it. It is important to choose the right preparations for obtaining a good harvest, taking into account the fact that the plant requires processing at different periods of its life cycle. The right combination of herbicides will give you good results. Good luck!

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Watch the video: #163 Making a little Money With U-Pick Sunflowers


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