to be chafoin wrote:Okay, but there is nitrification in the spring when the soil warms up, nitrification which plants can benefit from ... if there is any. I ask myself the question of flower beds covered by hay awaiting a crop for which it is not yet the planting or sowing season. If I understand correctly, this nitrification is less or not polluting because then the rains are less abundant and there is little risk of leaching?
Here.
In fact, there is very little nitrification, because bacteria are very cautious. Man didn't invent the "fridge" for nothing!
There are so few that the plants "drag their feet", whereas with "chemical" or "composting" gardeners, things go much faster!
This is of course variable depending on the climate, but very quickly, around April / May, when it starts to nitrify, the balance, in terms of precipitation stabilizes: if it rains, it compensates for what has evaporated. The great period of percolations has passed ...
Very quickly too, and we do not know it enough, the roots of plants will fetch water and minerals at 1, even 2 meters deep (for completely banal plants) ...
So the risk of spring is, if it exists, quite minimal.
Contrary to autumn, when it is a deluge of nitrates which occurs with the return of the rains ... If there are no plants in space, all this will be washed away by winter precipitation, those that recharge the water tables!