Hello. Here in the formula, after the reaction of carbamide and water, there are two OH atomes. But at the same time, carbamide acidifies the soil. Why? After all, the bases should alkalize the medium? Thank you.

Edited March 26, 20241 yr by MiZubov

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carbamide acidifies the soil

Who says that

1 hour ago, chenbeier said:

Who says that

https://en.everaoh.com/carbamide-fertilizer/

Important: carbamide acidifies the soil, therefore, in order to neutralize the acid, limestone is recommended: 800 g of ground limestone per 1000 g of urea.

 

Beside your link I cannot find any other scientific link, where this is mentioned. Its more opposit, lime evaporate the nitrogen as ammonia, it is lost for the plants.

 

 

 

 

 

4 minutes ago, chenbeier said:

Its more opposit, lime evaporate the nitrogen as ammonia, it is lost for the plants.

 

 

 

 

 

Where can I read more about this? How is the reaction going? And just more information…thank you.

https://www.quora.com/Is-urea-acidic-or-basic

 

If the ammonia gets oxidised to nitric acid, then it will acidify the soil

On 3/27/2024 at 2:47 PM, John Cuthber said:

If the ammonia gets oxidised to nitric acid, then it will acidify the soil

How do I know if the oxidation process will occur? Does it depend on the amount of urea applied? I mean, if I put a little bit, will oxidize to acid not occur? That is, better do small doses?