Microelement fertilizer(germination trays), such as iron, ketone, manganese, copper, companion and button, is not used as necessary fertilizer due to the small demand of seedlings and the general content of soil can meet the needs of seedlings. However, some soils sometimes lack trace elements, so it is sometimes necessary to use trace elements for fertilization(12 cell seed trays). Ferrous sulfate is also called soap alum. It is soluble in water and easy to oxidize.
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When sulfur, right paste and lime are filled in the soil, phosphorus is easy to be fixed and seedlings are not easy to absorb(black plastic plant pots wholesale). But spray continuously once every 3-5 weeks. Chlorine fertilizer includes ammonium sulfate (physiological acid), ammonium bicarbonate (close to neutral), acid plating (neutral), urea (neutral), ammonia water (weak alkaline), calcium ammonium nitrate (weak alkaline) and lime nitrogen (alkaline)(15cm plant pots). After 6-7 days, the leaves of the seedlings can be restored to green.
(cheap plastic cell seedling trays suppliers jamaica)It has certain effect on the prevention and treatment of deficiency of element (chlorosis)(4 inch plastic pots wholesale). For example, the annual seeding seedlings of Pinus elliottii have deficiency symptoms. The solution is 0.2%-0.5% ferrous sulfate solution, plus citric acid 0.02%-0.05%, and a small amount of neutral detergent powder (the amount of the solution can be foamed and adhered to the leaf surface) as the adhesive(18 cell seed trays), and the top dressing is applied outside the root.
There is no legume plant in the land, and there is no rhizobia in general(bulk pots). The microelements, such as thick, manganese, copper, zinc and molybdenum, are needed less in seedlings, so their water-soluble compounds, such as inverting acid, manganese sulfate, sulfuric acid crime, zinc sulfate, ammonium butyrate, etc., are generally used for extra root topdressing(36 cell seed trays). Most of iron also becomes insoluble oxide, which often leads to chlorosis.(cheap plastic cell seedling trays suppliers jamaica)
The cultivation of Robinia pseudoacacia(heavy duty seed starting trays), camphor tree, poplar and slash pine seedlings in limestone soil and Calcareous Alluvial Soil sometimes appears yellow symptoms due to iron deficiency, and the application of ferrous sulfate outside has achieved good results(16cm plant pots). In acid soil, the utilization of nutrients such as nitrogen, phosphorus, potassium, calcium and iron in the soil is reduced, and even the symptoms of lack of nutrition can occur.
This is one of the reasons why crops consume less land than seedlings(plastic planters suppliers). The application of sulfur or stone sound on alkaline soil can adjust the pH value of soil, improve the physical properties of soil, and cooperate with other methods, such as selecting acid fertilizer, applying a large amount of organic fertilizer and so on(6 cell plant trays). Phosphate fertilizer includes superphosphate (acid), calcium iron fertilizer (slightly alkaline), phosphate rock powder fertilizer (weak acid), bone powder, etc.
(cheap plastic cell seedling trays suppliers jamaica)Microbial fertilizer is a general term of all kinds of microbial fertilizer which is made by using the microorganisms beneficial to the growth of seedlings in the soil(shallow microgreen trays). Rhizobia can fix the chlorine in the air into the soil, which is used by seedlings. There are three points for attention when using compound fertilizer(8 cell plug trays): in order to improve the above conditions, applying lime on acid soil can adjust the acidity and structure of soil.