An experienced gardener to easily determine when the tomatoes are not enough fertilizer. On plant nutrient deficiency external signal traits. Knowing them, even inexperienced cottager may conduct feeding tomatoes to remedy the lack of necessary for the development of a culture of macro- and micronutrients.
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When nitrogen deficiency
Nitrogen is needed especially tomatoes in the early stages of the growing season. Nitrogen hunger does not allow them to properly develop the root system and grow green mass. The deficit of power is expressed in stopping the growth of stems and softened. Young foliage brightens and shallow. Veins under the lamina golubeyut slightly molding red. If you do not feed the culture, it is premature to bloom, and the harvest will consist of aborted fetuses.
If a little phosphorus
Phosphorus - one of the most important macronutrient for the growing of tomatoes. With its lack bushes almost stop growing and look faded. Although for the life of the plant does not need large doses of the element, it is indispensable in the fruiting period. At deficiency of phosphorus, a good harvest will not be: the formation of the fruit behind the normal time limits for yourself grow tomatoes small.
Determine phosphorus shortage can for foliage. It is painted in a dark green color with shades of blue. The back side becomes purple. Sheet curl at the edges of the plate and dry. The defeat of the bush starts below. Its stem stiffens and becomes brittle. It signals a lack of fertilizer purple color. In tomato root system weakened.
potassium lack Symptoms
When potassium deficiency bush slow growing and poorly blooms. Deficiency fertilizer interfere with the formation of the ovaries and uniform ripening of the fruit. The leaves darken, then turn yellow and dry the edges. eventually rust spots spread to the entire plate. Soon the affected leaves fall. Weakened stems wither.
Tomatoes grow hard by dehydration. Inside they formed dense streaks of green. With a shortage of potassium plants less digestible carbohydrates, so the fruits are obtained immature and tasteless: the end of their maturation gives a yellow spot at the stem. Without potassium culture loses resistance to diseases and temperature fluctuations, less suffers lack of moisture does not accumulate and vitamin C.
When not enough calcium
Tomatoes respond to calcium shortage of seed germination deterioration, defective development of the root system. Without this element in the plant nutrient balance is disturbed. Observed extinction points and growth of root hairs, and bud abscission ovaries.
On fruits are formed rounded brown spots (rot vertex). Bud at the top of the main stem, as well as new leaves brightens. The old foliage color does not change, and the young suffer necrosis and loses its shape. Die tops of the shoots.
When lack of copper
Experiencing micronutrient deficiencies, tomato leaf curl. Their tips are whitish. Young foliage is poorly developed and is painted in dark green with shades of blue. During formation of the buds fall off the majority of inflorescences. Stems look sluggish.
Not enough magnesium
Magnesium deficiency may be determined by the formation of foliar interveinal chlorosis which causes it to dry out and fall off. Effects Magnesium starvation initially manifested in the lower part of the bush, then the disease spreads into tiers, situated above. From micronutrient deficiencies suffer the stalk. It causes premature ripening of small fruits.
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