Author: M. Gratwick Publisher: Springer Science & Business Media ISBN: 9401114900 Category : Technology & Engineering Languages : en Pages : 487
Book Description
Following the demise of the MAFF's Perma some leaflets to fill outstanding gaps. The nent Leaflet Series in 1985, it was suggested content of three leaflets has been altered more that the final editions of the crop pest advisory extensively. Thus, Chafer grubs (Chapter 32) leaflets should be produced in a bound volume now incorporates material from Leaflet 449, for the benefit of future agricultural entomolo Japanese beetle, which has been omitted from gists and others interested in crop pests. This this collection as this pest has not become idea originated outside MAFF but was enthusi established in Europe. Nematodes on straw astically supported by entomologists in MAFF, berry (Chapter 81) has been enlarged by the the agricultural research institutes and the uni addition of further information on free-living versities. As editor of the leaflets from 1965 nematodes from the plant pathology leaflet on until 1985, I offered to undertake the task of Soil-borne virus diseases of fruit plants. The compilation and editing, and this offer was joint plant pathology/entomology leaflet on accepted. Raspberry cane blight and midge blight has To prevent the book from becoming quickly been included, but the information has been outdated, the sections on control measures mainly restricted to raspberry cane midge and have been redrafted by the Advisory Entomol the title changed accordingly.
Author: Great Britain Ministry of Agr Fisheries Publisher: ISBN: 9781330658222 Category : Science Languages : en Pages : 122
Book Description
Excerpt from Collected Leaflets on Insect Pests of Fruit Trees The sections in a leaflet follow on naturally. The first thing which attracts attention to a pest is the damage. Under "Plants Attacked and Nature of Damage" is given a list of the crops likely to be attacked and the characteristic signs of injury. Under the next section, "Description and Life-History" are described, the appearance of the pest in its various forms, and its life-history or habits, showing where it lives at each season of the year and which are its vulnerable stages. With this information it is then possible to follow the suggestions given under "Measures of Control," carrying out each operation with discretion and not by rule of thumb - a most important point, for success is often dependent on adapting a measure to meet special local conditions. Notes on Insects in General. - As it is impossible to deal separately with many insects in the leaflets themselves, a few general notes may be found useful. Description. - Insects belong to a group of creatures characterised (1) by the possession of a jointed body which is supported not by bones inside but by a hard horny skin, and (2) by the possession on one or more segments of the body of jointed "appendages" which may be modified to act as legs, jaws, antennae (feelers), &c. Strictly speaking, the term Insects should be confined to the creatures in the group with only three pairs of legs (in addition to other characteristics), such, for instance, as moths, beetles or bugs, but for practical purposes the name usually includes the groups containing mites (red spiders) and spiders with four pairs of legs, and the millipedes and centipedes with many pairs of legs. From the practical point of view no detailed knowledge of the various organs of the body is necessary but it is helpful to know a little of the features which characterise an insect as a living creature. The body consists of three parts - the head, the thorax and the abdomen. (a) The head bears the antennae (or "feelers"). which are not only organs of touch but are probably connected with other senses, possibly in some forms with smell. (Little, however, is known about the senses of insects except that by some means they smell and probably hear also.) There are also on the head the eyes which when well developed enable them to see the shape of things, or in other cases may be only sufficient to detect light or darkness. The mouth, on the underside of the head, is surrounded by "appendages" which vary in the different groups, in some taking the form of biting jaws and fingerlike organs to push food between them, while in others the same organs may be modified so as to form a "trunk" enabling the insect to bore holes and suck up juices. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Great Britain Ministry of Agriculture a Publisher: Wentworth Press ISBN: 9781371024864 Category : History Languages : en Pages : 116
Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: M. Gratwick
Author: Great Britain Ministry of Agr Fisheries
Author: Josef Nissley Knull
Author: Great Britain. Ministry of Agriculture and Fisheries
Author: Great Britain. Ministry of Agriculture and Fisheries
Author: Great Britain Ministry of Agriculture a
Author: 
Author: Ministry of Agriculture and Fisheries (London).
Author: 
Author: Great Britain. Ministry of Agriculture and Fisheries