Grapes, the highly sought-after fruit, are full of life, leafy and large, but they are picky about their thirst for nutrients. In recent years, fruit farmers have become more and more cautious about the use of fertilizers, however, due to the existence of some fertilization misunderstandings, the ideal effect has not been achieved, but has brought root damage and frequent fertilizer damage. Here, we will summarize some misconceptions about grape fertilization and improvement measures for your reference.
Quadruple heavy and four light
Heavy chemical fertilizer, light organic fertilizer
Chemical fertilizer, as a fertilizer directly absorbed and utilized by fruit trees, has a rapid effect. In contrast, organic fertilizer needs to release inorganic nutrients through microbial decomposition, which has a long effect period. Over-application of chemical fertilizers can easily lead to short-term nutrient overabundance and long-term nutrient insufficiency. In order to solve this problem, organic fertilizer can be increased appropriately, the use of chemical fertilizer can be reduced, and combined with the application of farmhouse fertilizer or commercial organic fertilizer, so that the fertilizer application is more balanced.
Diazo fertilizer, light potassium fertilizer
Although grapes are typical potassium-loving fruit trees, many people prefer to use nitrogen fertilizers, which hinders the absorption of elements such as potassium in the grapes. It is manifested as the bud eye is not full, the leaves are thin and large, the branches are growing wildly, and the physiological diseases are increasing. In order to solve this problem, potassium fertilizer should be applied rationally, either by root or by leaf spray. Root application is generally performed about a week after fruit set, while leaf spraying is mainly carried out during fruit expansion and coloring ripening period.
Significant elements, light medium and trace elements
Each element has a unique and important role in the growth of grapes, and should not be too much or too little. The solution is to increase the application of basal fertilizer, apply it according to the grape growing period, and correct it in time once the symptoms of nutrient deficiency are found.
Heavy underground, light on the ground
Some growers prefer to fertilize underground, but lack of awareness of aboveground foliar fertilization, resulting in severe physiological diseases and reduced yields of grapes. The solution is to make full use of foliar fertilizer, take advantage of its low dosage, high fertilizer efficiency, and fast absorption, and spray it during the critical period.
Three casual
Feel free to fertilize the spots
The depth and distance of the fertilization can affect the nutrient uptake of the grape roots and may even damage the root system. The most reasonable way is to look at the distribution of the root population and expand the fertilization range year by year to promote root growth.
The amount of fertilizer applied is arbitrary
The blind pursuit of yield leads to excessive fertilizer application, decreased root absorption, and an imbalance between the supply and demand of nutrients in the tree. The amount of fertilizer should be determined according to the state of the tree, soil conditions and the type of fertilizer, and attention should be paid to the maintenance of the root system to ensure the absorption of fertilizer and water.
Fertilization time is arbitrary
Grapes go through several stages of growth throughout the year, each with different nutrient requirements. Missing the timing of top dressing can affect the results, so fertilizer should be supplied as needed to ensure a balanced application.
These improvement measures are aimed at making grape fertilization more scientific and reasonable, preventing problems caused by over-fertilization, promoting healthy grape growth, and improving yield and quality.