Phosphate Fertilizer - Varieties and Effect

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Phosphates form the basis for various fertilizers

If you are looking for a fertilizer for your plants in a garden center or in a hardware store, you will always come across phosphate fertilizers. At the latest then ask yourself the questions: What is phosphate fertilizer, what does it consist of and what is actually behind this term? Where can and should he be used and when should he be better left out?
Phosphate fertilizer - what does it consist of?
As the name Phosphate suggests, the phosphate fertilizer contains salts of phosphoric acid. Both humans, animals and plants need phosphorus to maintain cell metabolism. Therefore, phosphorus occurs in nature. Phosphorus is not very soluble in water. In order to be used as a plant fertilizer, it must first be processed. The basic substance is the raw phosphate. It can be obtained from deposits of disintegrated marine animals and it is a by-product of iron extraction. In both cases, the recovered crude phosphate is a natural product, which is digested by fine grinding or by the use of sulfuric acid. The result is a phosphate fertilizer that can be used in the garden and in agriculture.
Phosphate fertilizer for the garden
It is not easy to find out from the large supply of fertilizers that are sufficient for use in the garden. Although plants need more to live than water and carbon dioxide, many of the mineral fertilizers available contain a lot of nitrate. It can not be stored by the soil and therefore penetrates quickly into the deeper soil layers. This negatively affects the global nitrogen cycle and permanently affects our groundwater. In order to feed the population of the whole world, nitrates can not be dispensed with in commercial agriculture, but organic fertilizer should be used in your own garden.
Organic phosphate fertilizer for the garden
Every gardener should be careful not to burden his garden soil with excessive use of mineral fertilizer. Although there are specialty chemicals for almost every plant species. Except for very few exceptions, this special fertilizer only helps the specialized trade. Here is a small selection of phosphate-containing fertilizers that are usually sufficient for garden use.

Phosphate fertilizer can be administered in various forms

The compost

The optimal form of nutrient recycling is the production of compost. It is not a commercial fertilizer, but a particularly good and nutritious soil additive. It improves the soil structure sustainably, because water and nutrients are optimally stored. Mature compost contains about 0.1% phosphorus, 0.3% nitrogen and 0.3% potassium. The nutrient contents vary depending on the composted material. If a lot of small animal litter composted, the potassium content increases. By composting a lot of poultry manure, the content of nitrogen and phosphate increases sharply.
Horn shavings and horn meal
Horn shavings are the grated hooves and horns of slaughter cattle. Very finely ground it is called horn meal. Both contain about 14% nitrogen and little phosphate and sulfate. Horn shavings are brought out as early as possible in autumn, because the effect of this fertilizer does not begin until after three months. Since horn meal is processed faster in the soil, application in early spring is sufficient. When using horny fertilizer hardly any nitrogen leaching takes place because of the organically bound nutrients. Over-fertilization is almost impossible due to the slow onset of fertilization. This is important to know, because soil tests prove again and again that garden soils are over-supplied with potassium and phosphate. Depending on the nutrient requirements of the plants, fertilization of 60 to 120 grams per square meter is sufficient. Tip: When planting woody plants, just put a handful of horn shavings into the planting hole. Tree, shrub and rose will thrive smoothly and magnificently.
Cow dung becomes rotten spirit
Although cow dung is not optimal for sensitive noses. But it is a very good fertilizer with a balanced nutrient content. The straw and other fibers are converted into good humus and thus improve the soil structure. The cow dung should be deposited a few months, then the dark color of the resulting Rottemist shows that this organic fertilizer can be used. Rottemist contains 0.3 to 0.4% phosphate, 0.4 to 0.6% potassium and 0.4 to 0.6% nitrogen and various trace elements. Two to four kilograms of Rottemist per square meter should not be exceeded, although an over-fertilization is almost impossible. Rottemist releases only about one third of the nitrogen in it each year. Therefore, it is sufficient to deploy it only every three years in the fall. Then the Rottemist forms a very good basic fertilizer for perennials, woody plants, vegetable garden and even for the sensitive rhododendrons.

Blue Grain Fertilizer has advantages and disadvantages that the hobby gardener should know

blue corn

The classic blue-grain fertilizer quickly provides the plants with a lot of nutrients.Unfortunately, the nitrate is rapidly soluble and therefore can not be absorbed by the plants at all. So it seeps into the earth and pollutes our groundwater. Research has tackled this problem and developed the new blue fertilizer 'Blaukorn Entec'. Now, non-leachable ammonium and special nitrification inhibitors ensure that the ammonium portion of the soil is only very slowly converted into nitrate. The phosphate content has been reduced as most soils are over-supplied with this nutrient for years to come. In the private garden area you get this fertilizer as 'blue grain Novatec'. Its use is advisable when a very acute nutrient deficiency occurs. Tip: Always dose slightly less than indicated on the instructions for use.
Liquid fertilizer for potted plants
The trade offers an incredible amount of liquid fertilizers. Slightly dosed orchid fertilizer, nitrogen-rich fertilizer for green plants and phosphate-rich fertilizer for all balcony flowers and boxes. With cheap liquid fertilizers, the nutrient contents often vary considerably from the data and in many cases the chloride content is far too high. That's why everyone is well advised to buy a branded product. Also, liquid fertilizer should always be dosed slightly lower than specified.
Worth knowing about phosphate fertilizer soon
  • Phosphates are salts of phosphoric acid. They belong to the compounds of the element phosphorus.
  • Phosphates have a good effect on the fertility of the soil.
  • In addition, the plants need phosphorus for the metabolism in the cells and that as well as animals and humans.
  • Phosphorus is therefore a vital nutrient for every species of animal.
  • Unfortunately, phosphates are poorly soluble in water, and even if they are present in the soil, plants may not be able to access them.
  • So it is often necessary to provide the plants with this important nutrient through special phosphate fertilizer.
rock phosphates
Phosphate fertilizer is made from raw phosphates. These are deposits of marine animals that need to be mined, ie a natural resource, or they are by-products of iron extraction. In this context, most people know Guano,

Liquid fertilizers are often phosphate fertilizers

from which raw phosphates are also obtained. The raw phosphates themselves are not yet usable for the fertilization of plants. For this they have to be water-soluble. In order to achieve the water solubility, they must first be unlocked. The crude phosphates are either ground to very fine parts or digested by sulfuric acid. Depending on their solubility in water, they can then be quickly or slowly absorbed by the plants as nutrients.
  • Highly water-soluble phosphate fertilizers are therefore considered to be fast-acting, while the less soluble ones are used rather than long-term fertilizers.
  • Since phosphate fertilizer is usually administered in liquid form, the plant absorbs this nutrient via the roots.
  • As a result, they can easily be washed out again and must be renewed regularly.
Phosphate deficiency?
Phosphate needs the plant as well as potassium and nitrogen. A lack of phosphate is indicated by slow growth, or rather, the plant remains much smaller than other species of its kind, which are sufficiently supplied with phosphate, and dies earlier. Since phosphate is difficult to absorb for plants, phosphate deficiency is the most common deficiency. Before fertilizing with phosphate fertilizer, however, you should first check whether this plant species can be supplied with phosphate fertilizer.

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