| modeling the effect of temperature and wetness on guignardia pseudothecium maturation and ascospore release in citrus orchards. | ascospores are the most important inoculum source of citrus black spot (cbs), caused by guignardia citricarpa, but pseudothecium maturation and ascospore release are inadequately studied. guignardia ascospore trapping and concomitant weather data were obtained for three localities over three seasons (july to march 2006 to 2009) in the limpopo province of south africa. degree-days accumulated until first seasonal ascospore discharge (>10°c with 1 july as biofix) (ddtemp), and ddtemp accumulated o ... | 2013 | 23234366 |