Diseases and Pests of Lettuce in New Zealand and Their Control |
Common terms and phrases
10-14 days intervals aphids areas attack Auckland bacterium big-vein Bordeaux mixture Botrytis brown Captan cause chloropicrin Common Name Trade CONTROL MEASURES copper oxychloride cucumber mosaic virus damage damping-off destroy develop Diseases and Pests disinfected Downy mildew dust established and repeat FACTORS FAVOURING INFECTION ferbam formalin fungi fungus germination green Grey mould hydrated lime infected lettuce infected plants INFECTION AND SPREAD Infection on lettuce insect pests Lactuca large numbers leaf lettuce crops Lettuce mosaic Lettuce mosaic virus lettuce plants Marginal leaf-spot METHOD OF SPREAD moisture Name Trade Names Nicotine sulphate occurs Pests of Lettuce Photo S. A. Rumsey Plant Diseases Division plant therapeutants plants are established pre-emergence Ring spot S. A. Rumsey Fig sclerotia Sclerotinia rot season seed beds seedlings soft rot soft-rot bacteria soil carried soon after plants spores spotted wilt spray susceptible SYMPTOMS TEPP Thiram thrips tomato treatment vectors virus diseases weeds wide host range Zealand Zineb