How can you tell good phosphate fertilizer from bad? These methods are simple and practical
The following methods for identifying good and poor phosphate fertilizer are introduced: observe the color and form. Phosphate fertilizer should be grayish white and powdery. If the color is white or yellow, it may be because the acid treatment was incomplete and its phosphorus content is low. Smell the odor. Phosphate fertilizer should have a slight sour odor. If it has no such odor, it means that during production...
The following methods for identifying good and poor phosphate fertilizer are introduced:
Observe the color and form. Phosphate fertilizer should be grayish white and powdery. If the color is white or yellow, it may be because the acid treatment was incomplete and its phosphorus content is low. Smell the odor. Phosphate fertilizer should have a slight sour odor. If it has no such odor, it means that during production the amount of sulfuric acid used was insufficient and the reaction was incomplete, so its effective ingredient content is low; if the sour odor is too strong, it means the free acid content is too high, its fertilizer efficiency is low, and after application it will inhibit the activity of microorganisms in the soil, burn the seedling roots of crops, and cause consequences such as seeds failing to germinate.
The moisture content of phosphate fertilizer is generally 8%-14%. After touching it with an object, it feels cool, but there are no water marks. If water comes out after squeezing it by hand, it indicates that its moisture content is too high, and the quality of this kind of phosphate fertilizer is poor. If it feels like dry soil when touched by hand, it indicates that the acid treatment was not thorough and its effective ingredient content is low. Sampling and testing: determine the quality of phosphate fertilizer through sampling and testing by the relevant department.
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