An experimental study of soil temperature regimes associated with solar disinfestation techniques under greenhouse conditions in Greece.
This paper deals with an experimental study of various techniques that have been applied for soil disinfestation purposes under greenhouse conditions. Various meteorological parameters and soil temperatures were measured for four different experimental soil segments (three associated with different disinfestation techniques and one as a reference) at depths varying between 0-1 m and with a time interval of 5 min in a greenhouse located in the Agricultural University of Athens Campus, Greece. Results showed that plastic polyethylene films such as covers, metallic conductors or a combination of both were able to enhance heat transfer and temperature increase in greenhouse soil. For typical disinfestation conditions, the depth-averaged temperature values for plastic covers, metallic conductors, and the combination of both were found to be higher than those for the reference of about 5 degrees C, 12 degrees C and 15 micro C, respectively. Moreover, the remained population percentages 50 days after the initiation of the experiment were found to be 19.3%, 25.3%, 37.3% Kcat 94% of the initial population, for the combination of metallic conductors and plastic covers, metallic conductors, plastic cover, and for the reference, respectively.
Garofalakis
I
I
Division of Geological Sciences and Atmospheric Environment, Agricultural University of Athens, Greece. garjohn@aua.gr
Tsiros
I
I
Frangoudakis
A
A
Chronopoulos
K
K
Flouri
F
F
D000383:Agriculture; D004203:Disinfection / Q000379:methods*; D004780:Environment, Controlled; D006358:Hot Temperature; D012988:Soil Microbiology / Q000592:standards*; D013472:Sunlight