Dissipation and Residues of Thiram in Potato and Soil

Table 4

Dissipation in potato leave and soil.

Sample	Time	Sites	Regression equation	The square of correlation coefficient	Half-life (day)
Potato plant	1st year	Beijing			3.2
		Hunan			4.4
		Jiangsu			4.1
	2nd year	Beijing			3.9
		Hunan			5.4
		Jiangsu			2.8
Soil	1st year	Beijing			2.6
		Hunan			6.9
		Jiangsu			9.9
	2nd year	Beijing			4.7
		Hunan			8.7
		Jiangsu			3.2

: the residue concentration of the pesticide at time “”; : the time after pesticide application.