WHICH MICROELEMENTS DOES NOT SUIT FOR CUCUMBERS - HOW TO DETERMINE BY THE APPEARANCE
Juicy, fragrant, crisp cucumbers are a 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.
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"
Subscribe to updates in our groups and share.
Let's be friends!