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CULTAN Fertilization
CULTAN Fertilization, or Controlled Uptake Long Term Ammonium Nutrition, is a type of injection fertilization where the entire amount of nitrogen needed for a plant to grow is injected at one time. During CULTAN fertilization, nitrogen is applied at the first signs of nitrogen deficiency in plants. 〔Kozlovsky, O. (“Assessment of surface and injection fertilization on various grass hybrids in grass-clover mixture” )〕 Fertilizer is more commonly spread on the surface of fields in either a liquid or powder form by spraying it.
== Injecting fertilizer ==
Although CULTAN fertilization is only done for nitrogen application, injection irrigation can also be used for other types of fertilizers. The most common way to inject fertilizer into the ground, regardless of chemical type, is through the drip method. The drip method involves an irrigation pump and a chemical injection pump. The two work simultaneously, slowly releasing nitrogen, letting it ‘drip’ from the system and then seep into the soil. 〔 Granberry, Darbie. (“Drip Chemigation: Injecting Fertilizer, Acid, and Chlorine.” ) University of Georgia College of Agricultural and Environmental Sciences. 2-8-2011.〕 If farming on a large scale, an engine (such as a tractor) is needed to move the system across the field.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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