History and Application of Seaweed Fertilizer

foliar fertilization, also known as root application (topdressing) fertilizer, is to supplement the nutrient elements needed by plants through foliar spraying, which plays a role in regulating plant growth, supplementing the missing elements, preventing premature senescence and increasing yield. Seaweed fertilizer isfoliar fertilizer, the author will focus on its development history and application skills.

development history

with the continuous improvement of lawn maintenance standards,outside root top dressingby virtue of the rapid supply of nutrients, to avoid nutrient adsorption fixed by the soil, improve.fertilizer utilization rate, more and more by the lawn care people like. Especially under adverse conditions, the root absorption function is hindered, foliar fertilization can often play a special effect. Therefore,foliar fertilizerhas made great progress in variety development, use technology and application scope.

, with more than 10,000 brands. The types of foliar fertilizer applied to golf course lawns include:a large number of elements, trace elements, humic acids, amino acids,Seaweedacids, other organic degradation products, etc. The entry threshold of foliar fertilizer is low, resulting in the domestic golf course foliar fertilizer market is more chaotic. In many varieties of foliar fertilizer, seaweed acidsfoliar fertilizerin recent years with its safe and efficient, organic environmental quality, quickly by the golf lawn maintenance who like.

Alginate Foliar Fertilizer was first used in 1949Great Britainproduction came out. Is a collection of nutrients, anti-biomass, plant hormones in one of the new fertilizer. After special biochemical process, it effectively extracts the essence from natural seaweed, greatly retains the natural active components, contains a large number of non-nitrogen-containing organic matter, terrestrial plants can not be compared with K, Ca, Mg, Fe, Zn, I and other mineral elements and rich vitamins, especially rich inSeaweedseaweed polysaccharide, alginic acid,Highly unsaturated fatty acidsand a variety of natural plant growth regulators. Therefore, seaweed liquid fertilizer is a new type of multifunctionalliquid fertilizer.

application skills

In order to better improve the utilization rate of seaweed fertilizer, in addition to choosing a good brand and type, you can also start from the following directions:

1. spraying concentration should be appropriate. Within a certain concentration range, the speed and quantity of nutrients entering the leaves increase with the increase of solution concentration, but if the concentration is too high, it is easy to cause fertilizer damage, especiallytrace element fertilizer, generally large and heavy elements (nitrogen, phosphorus and potassiumcalcium magnesium sulfur) use concentration in 500 times to 600 times, trace elements iron, manganese, zinc use concentration in 500 times to 1000 times.

2. The spraying time should be appropriate. When foliar fertilization, the longer the wetting time, the more nutrients the leaves absorb, the better the effect. In general, it is advisable to keep the leaves wet for 30 minutes to 60 minutes, so foliar fertilization is best carried out in the evening without wind; spraying fertilizer in the morning with dew will reduce the concentration of the solution and affect the effect of fertilization. Foliar topdressing cannot be carried out in rainy days or before rain, because nutrients are easily leached and cannot achieve the desired effect. If it rains 3 hours after spraying, spray once when it is sunny, but the concentration should be appropriately reduced.

3. Spraying should be uniform, meticulous and thoughtful. Foliar fertilization requires fine droplets and uniform spraying, especially on the back of the upper leaves and leaves that grow vigorously.

4. The number of spraying should not be too small, there should be intervals. The concentration of crop foliar dressing is generally low, and the absorption is very small each time, which is much lower than the demand of the crop. Therefore, the number of foliar fertilization should generally not be less than 2 to 3 times. At the same time, the interval should be at least more than a week, the number of spraying should not be too much, to prevent harm.

5. Foliar fertilizer should be mixed properly. Foliar dressing, two or more than two kinds of foliar fertilizer reasonable mix, can save spraying time and labor, the effect of increasing production will be more significant. However, the fertilizer must be mixed without adverse reactions or without reducing the fertilizer efficiency, otherwise it will not achieve the purpose of mixing. In addition, fertilizer mixing should pay attention to the concentration and pH of the solution, under normal circumstances, the pH value of the solution is about 7, neutral conditions conducive to leaf absorption.

6. Add in the fertilizerwetting agent. The crop leaves all have a layer of varying thicknesscuticle, the solution is more difficult to penetrate, for this reason, the amount of wetting agent can be added to the leaf fertilizer solution,surface activator, increasesurface tension, increase the contact area with the leaves and improve the effect of foliar topdressing.

must conclude by highlighting two points.

1. According to the results of a large number of field experiments, the effect of foliar fertilization is more likely to appear under the condition of plant growth factor stress (nutrition, climate, water). 2. root fertilization is a fundamental fertilization measure,outside root fertilizationis an auxiliary fertilization measure, can not put the cart before the horse