Enhanced Soil Solarization against Fusarium oxysporum f. sp. lycopersici in the Uplands

Table 2

Effect of solarization with regular polyethylene (PE), double regular polyethylene (DPE), and virtually impermeable films (VIF) on population of Fusarium oxysporum f. sp. lycopersici in soil.

Treatments	2008				2009
	Solarization period (weeks)
	3		7		3		7
	20 cm	30 cm	20 cm	30 cm	20 cm	30 cm	20 cm	30 cm
CK	1233* ab	1563 ab	1242 a	1270 a	1132 a	1249 a	1176 a	1209 a
PE	923 b	1067 b	694 b	628 bc	766 ab	877 ab	458 bc	804 b
DPE	950 b	940 b	582 bc	528 bc	642 ab	603 b	161d	174 d
VIF	1150 b	1050 bc	708 b	644 bc	804 ab	1078 ab	470 cd	679 c
	LSD=534				LSD=514

*Values are means of F. oxysporum f. sp. lycopersici (CFU/g soil) of 3 soil sub-samples, each planted on five Petri dishes.