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What are fertilizers? What fertilizers are there? Direct and indirect effects of fertilizers. Organic, mineral and micronutrient fertilizers. Bacterial fertilizers


Fertilizers are organic and inorganic substances used to improve plant nutrition. The correct application of fertilizers to the soil increases the yield of all crops and improves product quality.

 

What factors affect the effectiveness of fertilizers?

The effectiveness of fertilizers is primarily determined by the biological characteristics of plants and their need for nutrients, the content of assimilable substances in the soil and the properties of fertilizers. The greatest increase in yield from the use of fertilizers can be obtained against the background of high technology of crop cultivation and in conditions of ensuring optimal soil moisture.

 

What are the direct and indirect effects of fertilizers?

The direct effect of fertilizers is due to their direct effect on the nutritional regime of plants due to the presence of the necessary nutrients - nitrogen, phosphorus, potassium, trace elements. Indirect action improves soil properties and mobilization of nutrients, i.e. converting them into forms accessible to plants. They are possessed by lime fertilizers and gypsum.

 

How are fertilizers classified according to their composition and production method?

Depending on the composition of fertilizers, there are organic, mineral, organomineral and bacterial. There are local fertilizers obtained directly on the farm - these are composts, manure, ash, etc .; they also emit industrial, or factory ones, these include most of the mineral fertilizers, as well as industrial waste - metallurgical slags, etc.

 

What are organic fertilizers?

organic fertilizers What are fertilizers? What fertilizers are there? Direct and indirect effects of fertilizers. Organic, mineral and micronutrient fertilizers. Bacterial fertilizers

Organic fertilizers are manure, slurry, composts, peat, poultry droppings, feces, green fertilizer, sewage sludge, waste from the leather, food industry, etc. Organic fertilizers are widely and universally used for all agricultural crops. Most organic fertilizers contain all the nutrients that plants need.

 

What fertilizers are mineral fertilizers?

mineral fertilizers What are fertilizers? What fertilizers are there? Direct and indirect effects of fertilizers. Organic, mineral and micronutrient fertilizers. Bacterial fertilizers

Mineral fertilizers are divided into solid (powdery and granular) and liquid. Solid ones include: nitrogen (ammonium nitrate, ammonium sulfate, urea, ammonium chloride, etc.); phosphoric (single and double superphosphate, precipitate, phosphate rock); potassium (potassium chloride, potassium salts, sylvinite and kainite, potassium sulfate, etc.); complex (ammophos, diammophos, potassium nitrate, magnesium-ammonium phosphate, nitrophoska, etc.) and micronutrient fertilizers (boric, molybdenum, copper, manganese, etc.).

Recently, the industry has been producing complex and mixed mineral fertilizers with the introduction of microelements into them. The most effective combinations of macro- and microelements include: superphosphates (simple and double), nitrophosphate and ammonitrophosphate with additives of boron, manganese, zinc; phosphorus-potassium fertilizers containing molybdenum and molybdenum with boron; various fertilizer mixtures with the addition of boron, copper, zinc and other trace elements.

 

What are organomineral or humic fertilizers?

Organomineral, or humic, fertilizers contain both organic and mineral compounds. These fertilizers include: gumofos, gumofoska, TMAU, TAU.

 

What is the importance of micronutrient fertilizers?

micronutrien fretilizers What are fertilizers? What fertilizers are there? Direct and indirect effects of fertilizers. Organic, mineral and micronutrient fertilizers. Bacterial fertilizers

Microfertilizers are fertilizers that contain trace elements necessary for plants. These include boric, copper, cobalt, zinc, manganese, molybdenum, magnesium fertilizers, etc. The need for plants in micronutrient fertilizers is manifested when they are provided with the main elements of mineral nutrition - nitrogen, phosphorus and potassium. With a lack of assimilable forms of microelements in the soil, agricultural crops, including vegetables and fruits, retard growth and development and give a low yield of low quality. Lack of micronutrient supply often leads to diseases and even death of plants. Diseases such as hollowness of beets, cork spotting of apples, rosette fruit disease, chlorosis and some others are the result of an acute lack of trace elements in the soil,

 

What are bacterial fertilizers?

bacterial fertilizers What are fertilizers? What fertilizers are there? Direct and indirect effects of fertilizers. Organic, mineral and micronutrient fertilizers. Bacterial fertilizers

Bacterial fertilizers are preparations made from bacterial cultures. They increase the content of nutrients in the soil or mineralize its organic matter, thereby improving plant nutrition. Nitragin, azotobacterin, phosphorobacterin, etc. are used as bacterial fertilizers.



 

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