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About fertilizers
Nitrogenous fertilizers

Nitrogen fertilizer has the largest influence on production growth through its effect on chlorophyll and plant proteins.
To establish the quantity of nitrogen fertilizer wich should be administered it must be taken into account the nitrogen necessity of the plant by humus and nitrogen content in the soil.
Plants that respond well to nitrogen fertilizer application are: sugar beet, corn, wheat, oats, potatoes, cucumbers, onions, pumpkin, carrot, aubergines, melons, radishes, tomatoes, apple, pear, peaches, vine.

The advantages of using nitrogen fertilizers:
- ensures the durability of plant roots, its growth and development;
- reduce the maturation time of plants;
- ensures the increase of harvest quality;
- prevents shaking beans and increase the yield;
- ensures grain growth.

Results of lack of nitrogen fertilizers:
- reduce the synthesis of protein and enzymes;
- obstruct the development of the plant, wich remains dwarf;
- the plant gets sometimes a reddish color;
- the inferior and lower leaves begin to turn yellow;
- plant stems are slender, short ear and grains not mature well;
- decreases productivity.
To remedy the lack of nitrogen, there must be given plentiful natural fertilizer with nitrogen chemical fertilizer in necessary quantity.

Results of abusive administration of nitrogen fertilizers:
- the plant grows too quickly, strains will be knocked down, obtaining an increased harvest of strain instead of grain;
- plant cells and tissues will be poor;
- reduce the resistance of plant to drought, cold, disease and pests;
- fruits will have a lack of quality (spongy, thick peel and without resistance).