What fertilizers and top dressing is not enough for cucumbers - symptoms and photos
WHICH MICROELEMENTS DOESN'T LIKE FOR CUCUMBERS - HOW TO DETERMINE BY THE APPEARANCE
Juicy, fragrant, crispy cucumbers miracle how good! But they will be so, if you pay due attention to their nutrition. Plants need different trace elements at each stage of development. But the lack of at least one of them negatively affects the appearance and taste of cucumbers. They become curved, acquire an atypical color for the variety, develop very slowly and ... do not crunch. Let's consider what elements are needed for cucumbers.
Cucumbers, like other plants, very often suffer from non-infectious, or non-parasitic diseases. They arise due to physiological abnormalities in the development of the plant.
Among noncommunicable diseases, the following types are most often encountered: withering, fruit ugliness, root sprouting, growth point dying off, ovary decay, appearance of atypical coloration, destruction or deformation of individual plant organs. The reason lies in abiotic factors: increased or decreased temperature, lack or excess of moisture in the soil, poor nutrition, poor physical and chemical composition of the soil, the presence of harmful impurities in the air, etc.
Easy prey for disease is a weakened organism. The rapid growth of the plant and intensive fruiting determine the high requirements of the cucumber to the content of nutrients in the soil. If they are not enough, the plants immediately signal this with their appearance.
RџSЂRё nitrogen deficiency plants are stunted.
The leaves are smaller than usual, pale green with a yellow tint. Veins remain green for some time, then turn yellow too. The stems become thin, stiff, fibrous. Fruits are formed a little, they are small, with a pointed end, pale in color. (more on the lack of nitrogen in vegetables here)
Reference by topic: What the soil lacks in the plot is the weeds. Memo table
First sign potassium starvation - lightening the edges and ends of leaves. Over time, the leaves become burned. New leaves become smaller, internodes become shorter, less side shoots are formed. The top of the ovary grows, but the base does not, as a result, the fruits are narrowed to the stem and greatly expanded upward.
By the appearance of the sheet plates, one can judge phosphorus deficiency. Old leaves acquire a dark green color, and new ones gradually become smaller, shriveled, their edges curl upward, flowering and fruit formation are delayed.
О lack of iron cucumbers evidence of the appearance of light stripes along the veins of leaves, later the entire leaf turns yellow. With severe starvation, the lemon-yellow color of the leaves turns into a white-yellow and the leaves die off. Symptoms appear more on alkaline and highly calcareous soils.
On the left is a shortage of calcium from cucumbers, on the right is manganese.
Sign manganese deficiency - chlorosis, which develops first on young leaves between the veins, and then on the old. Veins retain a green color even with very severe starvation. Chlorotic tissue turns brown or becomes transparent, gradually necrotic. The scourges of cucumbers are short, thin, their growth is delayed. The disadvantage of this element is amplified in soils with a pH of more than 6,5 and in dry periods.
With shortage zinc young leaves are small, have an asymmetrical shape and are covered with yellow dots or uniformly chlorotic. The internodes are usually shortened. Old leaves harden between the veins.
Sign of lack magnesium - Chlorosis of the leaf blade, sometimes in the form of solid spots. The leaves become brittle, sometimes curl up. Chlorotic tissue turns brown and dies. With a severe lack of magnesium, only the veins of leaf blades remain green, and the rest of them turn yellow. Starvation is most often observed on acidic soils.
Deficit molybdenum leads to the fact that on the old leaves appears pronounced mottling, veins remain light green. Young leaves are initially green, but also become speckled as they grow. Sections of chlorotic tissue subsequently swell. Necrosis develops along the edges and at the top of the leaves. The flowers are very small.
With a lack calcium plant growth is slowed down. The tips of the roots die off, spherical swellings may form on them. The stems become thick and woody. Young leaves are small, they quickly turn yellow, covered with small white spots. Old leaves remain green, but may bend. New shoots lose turgor (elasticity). In acute starvation, the apical kidneys die.
At deficiency wrinkle root growth is greatly slowed down, internodes are shortened, leaf rosettes form at the ends of shoots. Old leaves harden, young leaves curl and dry. With prolonged starvation, the apical kidneys die. Dark-colored patches of cork tissue appear on the surface of the fruit.
If the old leaves have a dull appearance, and the young ones are small and small, the shoots fade, which means that the plants lack copper. In this case, there is almost no chlorosis, but the leaf tissue seems to be bleached, they lose turgor. With a significant shortage of copper, the ovary crumbles. Starvation is usually observed on soils rich in organic matter - peat and marsh.
The market of agrochemicals offers a large number of various organo-mineral fertilizers for vegetables. Among them there are both complex fertilizers and fertilizers containing individual nutrition elements, as well as fertilizers specially designed for a particular crop. The most popular are complex fertilizers Master Agro, Rezkoy, LF-vegetable, Quantum Aqua Sil, Agronom Profi, Agricola, Terraflex Clean sheet. They are NPK balanced, and also contain the necessary trace elements in chelated (easily digestible) form (S, Mn, Fe, Zn, B, Mo), vitamins, amino acids, polysaccharides. They can be used on soils with an acidity level of 7,6-8,6. The digestibility by plants is 97-99%. The drugs are available in liquid form and solid state (granular and powder). Organic and mineral fertilizers are used to soak seeds, root and foliar fertilizing.
Cucumber is a very capricious vegetable crop. But if you are attentive to your pets and take proper care of their nutrition, every year this wonderful vegetable will delight you with a good harvest.
HOW TO KNOW WHAT CUCUMBERS NEED?
The yield of cucumbers directly depends on how they are provided with good nutrition. The appearance of cucumber plants indicates a lack of trace elements, which is determined by the leaves and fruits.
Lack of calcium - the plant looks weak, the ovaries fall off; this often occurs in acidic soils. So the soil needs to be limed. The problem can be solved by feeding the cucumbers with a solution of calcium nitrate.
Lack of magnesium - the rapid aging of plants, the leaves turn pale and turn yellow, only the veins remain bright green. The solution to the problem is to feed with magnesium sulfate.
Too crooked - not enough moisture.
It becomes narrow in the middle - too cold water for irrigation.
Pear-shaped - lack of potash fertilizers.
The tip of the cucumber became narrow, bent and turned yellow - lack of nitrogen.
Sometimes the cucumber becomes bitter. It's all about a special substance - cucurbitacin. It appears in a vegetable after a stressful situation (lack of water, or too high a temperature - an excess of sun). Bitter cucumber will not bring any harm to the body (although it is not very pleasant to eat). On the contrary, it is believed that cucurbitacin is involved in the suppression of cancer cells.
Crispy and fragrant cucumbers to you, dear readers!
© Author: O. Domnina, village of Igumenka, Tver region.
Reference by topic: How to determine what fertilizer is not enough for vegetables
Lack of micronutrients in cucumbers - VIDEO
© Author: Valentina SERGIENKO, Candidate of Agricultural Sciences
Below other entries on the topic "Dacha and garden - with their own hands"
- Why are cucumbers bitter?
- The three most delicious varieties of cucumber - my reviews
- Cucumbers F1 Gerasim and Ecole on the windowsill - my feedback on growing
- Cucumber conveyor or the gradual cultivation of cucumbers
- Why do cucumbers turn yellow - the reason for the double-tail!
- Growing cucumbers on trellises and nets
- If the seedling of cucumbers has outgrown - my way of "salvation!" (Naberezhnye Chelny)
- Soil for seedlings of cucumbers - which is best?
- Technology of growing ground cucumbers, my feedback
- What care do cucumbers need for smooth fruit?
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Starting in June, once a week I spray tomatoes and cucumbers with coniferous broth. I cook it like this. I fill a half-liter jar of crushed pine needles with 5 liters of water. Bring to a boil and keep on low heat for 30-40 minutes. I let it cool, I filter. During the boiling time, the liquid becomes smaller, so I bring the volume up to 5 liters with clean water. I add 1-2 drops of iodine and 1-2 tbsp. green soap. I start harvesting a week (or even two) earlier than my neighbors. In addition, my plants get sick much less often.
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All ingredients of this composition are good for vegetables. Iodine and green soap help prevent the development of late blight, powdery mildew, protect against root and fruit rot. A coniferous extract stimulates the growth of plants, helps them easier to tolerate sudden changes in temperature, repels some pests. But, in my opinion, one or two drops of iodine will not be enough for the effectiveness of this solution. I recommend increasing the dose to 5 drops per 5 l of the composition. As for the coniferous broth, it is, on the contrary, prepared less concentrated (limit yourself to 1 tbsp. Needles per 5 liters of water), otherwise it can lead to burns on the leaves.
Svetlana KRIVENKOVA, agronomist
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In order to collect twice as much yield from each bush of cucumbers and tomatoes, I dissolve 10 tablets of succinic acid in a bucket of water and spray the composition of the plant, as well as the ground around them. I repeat every 10 days throughout the season. Using this method, I always get excellent results.
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Baking with apples is my family's favorite dessert, so I cook it often. I used to throw away the peel and cores, and then I read the recipe for an interesting top dressing for cucumbers. I tried it last year - and I picked the first cucumbers two weeks earlier than usual. Yes, and transplanting to the garden after the apple "cocktail" cucumbers and zucchini endured better - they immediately started to grow. I collect all apple peels, dry them on a battery or on a baking sheet in a cooling oven with an open door. I store in cloth bags or old pillowcases.
Handful dry peel pour 1 l boiling water, boil for X minutes, I insist until the broth becomes slightly warm. I filter, I add 5 ч.л. sugar and 2-3 g (quarter of a sachet) of dry yeast. I mix everything, I cover with a towel and leave it for 4 days. Once in 2-7 days immediately after watering I pour out for each plant according to 10 / 1 st. diluted with water "cocktail" (4: 1).
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It is generally accepted that the main nutrients are nitrogen, potassium and phosphorus. It is easy to see that this is not the case if you burn an armful of dry grass. When grass burns, nitrogen (there is very little of it) evaporates, and a handful of ash is potassium and phosphorus. The bulk of plants is burned carbon. Consequently, the main element of plant nutrition is carbon in a form that can be assimilated by plants.
It is also generally accepted that plants absorb carbon monoxide - carbon dioxide. But this is not the case. Leaves and stems of plants practically do not absorb carbon dioxide due to its low concentration in the air: carbon monoxide is heavier than air and sinks to the ground. Displacing air from the soil capillaries, carbon dioxide interacts with soil moisture, forming carbonic acid - it is this that is sucked in by the plant roots.
Therefore, in order to supply plants with the main nutrient - carbon - it is necessary to create an increased concentration of carbon dioxide in the surface layer of the air and maintain an increased moisture content in the upper layer of the soil.
These conditions can be met if mulch planting is applied.
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Last year, the first crop of cucumbers let us down: Zelentsy grew pot-bellied, like pears. You can’t put it in zakat or make friends with it ... I complained to a familiar experienced gardener, and he says: this is a clear sign of a lack of potassium! On his advice 3 tbsp. sifted wood ash poured 1 liter of boiling water, let it brew overnight. Stirred, diluted with water (1: 4), plentifully sprayed cucumbers with the composition, poured the remains under the root. I didn’t come across more “pussies”, cucumbers began to grow just a sight for sore eyes!