As an important vegetable in daily life, tomatoes are not only delicious but also delicious and nutritious. However, due to the current deficiencies in the management of the plant, various conditions occur in tomato during the growth period. To make a lot of friends growing tomatoes is a headache, here I give you a note, may wish you try:
Because of various diseases and insect pests, they are all due to the imbalance of nutrients. Once a certain disease occurs, it will reduce the disease resistance of the plants and cause pests. In the final analysis, it was due to improper fertilization. Therefore, in order to avoid the occurrence of pests and diseases, we must first balance fertilization. Balanced fertilization is based on the nutritional characteristics of tomatoes, and rational fertilization.
Tomato nutrition characteristics (for reference only):
1 The life of a tomato is divided into germination, seedling, and fruiting. The amount of nutrient absorption in the early period is very small, and the nutrient uptake during the full fruit period can account for 70% to 80% of the total amount.
2 The lack of nitrogen in tomatoes will cause the plants to be thin, with pale leaves, light green or yellow. The leaves are small and thin, the veins change from yellow to green, the main stem becomes hard and dark purple, and the ear is small. The plants are susceptible to gray mold and disease.
3 Phosphorus deficiency at the seedling stage. The back of the leaf blade was lavender, and some light purple spots initially appeared in the veins and then expanded. The main stem is slender, the stem becomes red, the leaves are narrow, and curls appear late, and the fruit is late and the fruit is small.
4 Potassium deficiency, young leaves curled, old leaves were initially gray-green, and then the leaf margins were yellow-green until dry. Sometimes the veins are chlorotic and necrotic and even extend to new leaves. Fruit drop, cracking, and late ripening. Poor fruit quality.
5 Calcium deficiency, the upper leaves turn green and yellow, the leaf margin is heavier, and gradually necrosis becomes brown. The young leaves are small, deformed and cramped, and can be easily changed to purple brown and dead. The top of the fruit was rot. A round rotting patch appeared on the top of the fruit. It was water-stained and dark brown. It was called umbilical rot.
6 Mg deficiency, chlorosis of the lower leaves, leaf veins and veins remain green near the formation of yellow-green leaves, in severe cases, some dead leaves, leaf edge curled, the macula between the leaf edges into a strip, and necrosis. The old leaves died and the whole leaves turned yellow.
7 iron deficiency, the first base of the leaves yellow, golden yellow, and to the top of the leaf development, leaves visible green leaves, petiole purple.
8 Boron deficiency, yellow leaves of young leaves, and leaf deformation. In severe cases, there are few fruit set, wrinkled fruit, lignified spots, and inconsistent ripeness.
Note: Due to the large number of factors affecting the growth of crops, sometimes due to a large amount of fertilizer, which leads to a decrease in the utilization rate of another fertilizer, there is a deficiency of the disease. It is better to measure the soil before fertilization, and then determine the reasonable amount of fertilizer according to the soil nutrient content.
Balanced fertilization technology, please visit:
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