| چکیده انگلیسی مقاله |
In plant nutrition, each element should be enough available, because in lack of balance, with addition a nutrient, in plant growth performance increasing does not occur, but will also create disturbances in plant growth that ultimately resulted in the loss of crop. Nutrient elements in plant growth are including non-essential and essential elements that the essential elements are divided to two categories, micronutrients (iron, manganese, zinc, copper, boron, molybdenum, chlorine and …) and macronutrients (nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and …). These elements are needed plants, but if they will be used too much, not only decrease plant growth and yield, but also will be as an obstacle to the growth and development of plants and even will be changing to an inhibiting factor to plant growth. Therefore, If we use fertilizers and food additives, should be attention to amount of elements given to the plant, axactly untile the increasing in nutrients not to interfere with plant growth. |
