The amount of organic matter in 75 percent of our country's lands is below 2 percent. This is the result of the burning of residues that are defined as stubble and left in the field after the harvest of monoculture farming and plants that have been practiced for years.
The most important problem of the farmer about stubble is the long decay time. The most important factors affecting the decay time of the stubble stems are the moisture content and temperature of the soil and the C / N coefficient of the stubble. The higher the humidity and temperature of the soil, the lower the C / N coefficient (around 20), the faster the breakdown or decay of the stubble. However, in grain stubble, the C / N coefficient is generally more than 80. This coefficient can be reduced by nitrogen fertilization on stubble. By giving 1 kg of inorganic nitrogen for every 100 kg of stubble, the C / N coefficient can be reduced below 40.
The first reason our farmers burn stubble is that the excess stubble remaining on the soil makes it difficult to cultivate the plow while the field is preparing for the next sowing season. Instead of burning the stubble, an option is to directly stub a stubble. There are special sowing machines developed for this purpose.