Download e-book for kindle: Crop Pests in the UK: Collected edition of MAFF leaflets by Marion Gratwick M.Sc, D.I.C., C.Biol., M.I.Biol., F.R.E.S.

By Marion Gratwick M.Sc, D.I.C., C.Biol., M.I.Biol., F.R.E.S. (auth.), Marion Gratwick M.Sc, D.I.C., C.Biol., M.I.Biol., F.R.E.S. (eds.)

ISBN-10: 9401046549

ISBN-13: 9789401046541

ISBN-10: 9401114900

ISBN-13: 9789401114905

Following the dying of the MAFF's Perma­ a few leaflets to fill amazing gaps. The nent Leaflet sequence in 1985, it was once urged content material of 3 leaflets has been altered extra that the ultimate versions of the crop pest advisory largely. therefore, Chafer grubs (Chapter 32) leaflets could be produced in a sure quantity now contains fabric from Leaflet 449, for the advantage of destiny agricultural entomolo­ jap beetle, which has been passed over from gists and others drawn to crop pests. This this assortment as this pest has now not develop into proposal originated outdoors MAFF yet used to be enthusi­ tested in Europe. Nematodes on straw­ astically supported through entomologists in MAFF, berry (Chapter eighty one) has been enlarged through the the rural examine institutes and the uni­ addition of additional info on free-living versities. As editor of the leaflets from 1965 nematodes from the plant pathology leaflet on till 1985, I provided to adopt the duty of Soil-borne virus illnesses of fruit crops. The compilation and modifying, and this supply was once joint plant pathology/entomology leaflet on authorised. Raspberry cane blight and midge blight has to avoid the booklet from changing into speedy been integrated, however the details has been superseded, the sections on keep watch over measures often constrained to raspberry cane midge and feature been redrafted through the Advisory Entomol­ the identify replaced accordingly.

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Read e-book online Crop Pests in the UK: Collected edition of MAFF leaflets PDF

Following the loss of life of the MAFF's Perma­ a few leaflets to fill awesome gaps. The nent Leaflet sequence in 1985, it used to be urged content material of 3 leaflets has been altered extra that the ultimate variants of the crop pest advisory commonly. therefore, Chafer grubs (Chapter 32) leaflets could be produced in a certain quantity now comprises fabric from Leaflet 449, for the advantage of destiny agricultural entomolo­ eastern beetle, which has been passed over from gists and others drawn to crop pests.

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Adults appear between late May and mid-June and live for about four to six weeks; active life ends with the laying of eggs during late June and July. The original host plants of the apple capsid were various species of willow and bog myrtle, on which it now occurs sparsely. Among fruit trees and bushes this species is found mainly on apple but will also attack red and black currants and gooseberry. Control in orchards and plantations Common green capsid This species causes sporadic damage in many orchards in southern England.

Thus the total period from egg to adult at this temperature is about 27 days. 3 Glasshouse whitefly: 'scale' (left) and adult (right) on underside of leaf (x 12) Preventive measures Before plants are taken into a glasshouse, it is important to ensure that none of them is already infested. Because of the risk of introducing an insecticide-resistant strain of whitefly, this is just as important when the 48 Aphids and other plant bugs glasshouse is already infested with whiteflies as when it is free from infestation.

On raspberry and loganberry, a spray should be applied just before the flowers open; this coincides with the end of the hatching period. Apple capsid A recommended insecticide should be sprayed at the green cluster stage. This spray will also control caterpillars of winter moth and fruit tree tortrix moths (see pages 156 and 140). Control in gardens Some insecticides recommended for control of capsid bugs are suitable for use in gardens. They should be applied at the times given above. )), the rose-grain aphid (Metopolophium dirhodum (Walker)), the grain aphid (Sitobion avenae (Fabricius)), the blackberry-cereal aphid (Sitobion fragariae (Walker)) and the fescue (or grass) aphid (Metopolophium festucae (Theobald)).

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Crop Pests in the UK: Collected edition of MAFF leaflets by Marion Gratwick M.Sc, D.I.C., C.Biol., M.I.Biol., F.R.E.S. (auth.), Marion Gratwick M.Sc, D.I.C., C.Biol., M.I.Biol., F.R.E.S. (eds.)


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