Pests and diseases
Dorling Kindersley, Mar 1, 2000 - Gardening - 218 pages
Guidance from the experts in the Identification, treatment, and prevention of plant pests, diseases, and disorders. Whether you need to identify a pest, want to know how to prevent plant problems, or are looking for alternatives to pesticides, you will find the answers in AHS Pests & Diseases. How do you know if an insect is beneficial or destructive? AHS Pests & Diseases identifies valuable insects and pest predators as well as the troublemakers. Can you identify a problem if you don't know the name of a plant? The illustrated catalog of plant problems is grouped according to whether leaves, stems, flowers, roots, or fruits are attacked. Simply compare the photographs with the affected part of your plant to find out what is wrong. Is a particular plant susceptible to disease? The A-Z, plant-by-plant listing tells you which particular ailments individual plants are most likely to suffer from. Are pesticides always necessary? Many common problems can be controlled by good gardening practice and simple preventive measures. AHS Pests and Diseases provides authoritative advice on pesticide-free solutions wherever appropriate. AHS Pests & Diseases is the practical handbook gardeners have been waiting for.
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GARDEN HEALTH AND PROBLEMS
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adult affected leaves aphids appear apple areas attack autumn bark become beetles borer branches bulbs canker caterpillars CAUSE The fungus chemicals corms cultivars damage debris develop dieback discoloration disease distorted early summer eggs feed ﬁrst ﬂies ﬂowers ﬂy foliage fruit fungal fungal growth fungi fungicide gall wasp galls garden grass green greenhouse growing grubs holes honeydew horticultural oil host plants infected infected plants insecticidal soap killed labeled insecticide larvae late spring late summer lawn leafhoppers leafminer maggots mealybugs midspring midsummer mites moth nematodes numbers nymphs occur overwintering pale parasites patches pathogens PEAR pesticides pests pheromone potato powdery problems Prune Puwrs Remove rhododendron roots scale insects season seedlings seeds Seep shoot tips shrubs soil sooty mold species spores spots sprays spread stems stunted susceptible Svmvrous symptoms thrips tissue tomato traps trees trunk tubers tunnels turn brown twigs underside usually wasps wilt yellow