PREVENTION OF CHEMICAL INJURY OF AZIDE COMPOUND AND PREVENTIVE AGENT THEREFOR

PROBLEM TO BE SOLVED: To increase the productivity of the soil by spraying a specific chemical injury preventive to the soil which is treated with an azide compound to efficiently prevent the chemical injury of azide compound and to remove the azide compound remaining in the soil in a short period and enable the planting of useful crop plants in an early stage without chemical injury. SOLUTION: A chemical injury preventive containing a compound which decomposes an azide compound or hydrogen azide, for example, a nitrite such as alkali or alkaline earth metal nitrite as an active ingredient, is scattered to the soil treated with the azide compound which can liberate hydrogen azide by decomposition such as alkali or alkaline earth metal azide to prevent the chemical injury caused by azide compound. It is preferred that the chemical injury preventive containing the decomposing compound is scattered in an amount corresponding to 0.3-2 equivalents per one equivalent amount of the remaining azide compound and hydrogen azide in total.