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Wednesday, July 29, 2020 | History

2 edition of Studies on the biology of some root aphids in Egypt (Hemiptera-Homoptera: Aphididae) found in the catalog.

Studies on the biology of some root aphids in Egypt (Hemiptera-Homoptera: Aphididae)

Mahrus Saleh Hassan

Studies on the biology of some root aphids in Egypt (Hemiptera-Homoptera: Aphididae)

by Mahrus Saleh Hassan

  • 295 Want to read
  • 37 Currently reading

Published by General Organization for Govt. Print. Offices in Cairo .
Written in English

    Places:
  • Egypt.
    • Subjects:
    • Aphididae.,
    • Insect pests -- Egypt.

    • Edition Notes

      ContributionsUnited Arab Republic. Wizārat al-Zirāʻah.
      Classifications
      LC ClassificationsSB945.P64 H3
      The Physical Object
      Pagination9 p.
      ID Numbers
      Open LibraryOL267224M
      LC Control Numberne 65000069
      OCLC/WorldCa16762234

      These whitish aphids, as with their name “root aphid,” can be noted in the root systems and cause leaf yellowing, plant wilting and stunting of plants. According to Ray Cloyd from Kansas State University Department of Entomology, “Root aphids (Pemphigus species) overwinter as eggs and may feed on plants such as sedum, veronica, aster.   I have some babies in week 2 of veg that are drooping a little more than I would like. This is my first time working with this strain so I'm not sure if it's to be expected. In any case, I begin looking into potential pests and freak out when I discover I may have root aphids. I sliced some potatoes and placed them on my soil last night.

      The history of biology traces the study of the living world from ancient to modern times. Although the concept of biology as a single coherent field arose in the 19th century, the biological sciences emerged from traditions of medicine and natural history reaching back to ayurveda, ancient Egyptian medicine and the works of Aristotle and Galen in the ancient Greco-Roman world. Aphid definition, any of numerous tiny soft-bodied insects of the family Aphididae of worldwide distribution, that suck the sap from the stems and leaves of various plants, some developing wings when overcrowding occurs: an important pest of many fruit trees and vegetable crops. See more.

      Aphids (Aphidoidea) are a part of the Hemiptera, a species-rich branch of the hemimetabolous insects (Fig. 1). Refl ected in their alternative name “Rhynchota” all members of Hemiptera have mouthparts transformed to a “sucking beak”. A few aphids, such as Cinara and Lachnus species, opportunistically feed on roots, but for some aphid species this is their normal habitat. Given their concealed way of life, relatively little is known about root aphid ecology. Many root aphid species are regarded as quite rare, but may simply be under-recorded.


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Studies on the biology of some root aphids in Egypt (Hemiptera-Homoptera: Aphididae) by Mahrus Saleh Hassan Download PDF EPUB FB2

The first of these publications on aphids that attack the roots of plants in Egypt [cf. R.A.E., A 53] deals with the morphology and taxonomy of 16 species. It includes a list of the aphids concerned, showing their food-plants, distribution and seasonal occurrence, and another in which they appear under their food-plants.

The second and third papers contain the results of studies on the Author: M. Hassan. Get this from a library. A morphological and taxonomic study of some root aphids, in Egypt (Hemiptera-Homoptera: Aphididae). [Mahrus Saleh Hassan; United Arab Republic.

Wizārat al-Zirāʻah.]. Biology of aphids (Studies in biology ; no. 44) [Dixon, A. G] on *FREE* shipping on qualifying offers. Biology of aphids (Studies in biology ; no. 44) Comment: This book is in good condition with some minor wear to the spine and/or cover.

Aged book. Tanned pages and age spots, however, this will not interfere with by: This book combines fundamental information about aphids with chapters addressing state-of-the-art research in topics such as aphid-related phylogeny, genome biology, epigenetics and chemical ecology. Root aphids are often tended by ants and have evolved more explicitly mutualistic morphologies to serve their ant farmers than aphids living above ground.

Root aphids provide the ants both with sugary honeydew that they excrete via a hairy organ at the tip of their abdomen, and also with protein when the ants eat them, particularly when they. Additional Physical Format: Online version: Dixon, A.F.G. (Anthony Frederick George). Biology of aphids.

London: Edward Arnold, (OCoLC)   Root aphids may also be transported from one container to another via transplants or rooted cuttings. Once established, the process of killing root aphids may become somewhat difficult.

Though some chemical treatments are an option (in potted plantings), it is often not realistic as a choice to thoroughly drench the soil. Most people know of aphids as garden pests, infesting the soft green tissues of plants in vast numbers and killing them by sucking out the sap.

Indeed, among the or so known species of aphids about are pests, and in temperate regions several are economically important agricultural pests that damage crops directly during feeding or act as v.

The aphids are dealt with in two similar–sized groups according to their feeding sites, namely root–feeding and leaf–, stem– and ear–feeding species. Aphis craccivora Koch and Myzus persicae (Sulz.) are regarded as ‘occasional rice aphids’ as they are found on rice occasionally but do not regularly infest rice plants.

How To Prevent Root Aphids In Your Cannabis Grow Op. The best way to deal with root aphids is to never get them in the first place. The nasty little suckers are so difficult to get rid of, preventing them altogether is the ideal scenario. If you’re an outdoor grower, there is no surefire way to completely prevent root aphids.

Several studies included biology, life tables and thermal requirements of most common aphid parasitoids in Egypt; Aphelinus asychis (El- Gantiry ), Lysiphlebus fabarum (Rezq et al., ), Aphidius matricariae (Agamy et al., and El-Heneidy et al.

c), Aphidius colemani (El-Heneidy et al. ), Aphelinus albipodus (Adly et al. John L. Capinera, in Handbook of Vegetable Pests, Damage. Aphids feed on the new growth, causing shortening of the internodes, rosetting, dwarfing, and reduced root growth (Capinera, a).Asparagus aphids deplete the sugars, particularly in the roots, and to a greater extent some other aphids (Leszczynski et al., ).Heavily infested plants have a bushy or bonzai-like appearance.

Aphids represent one of the world's major insect pests, causing serious economic damage to a range of temperate and tropical crops. These range from grain crops and brassicas to potato, cotton, vegetable and fruit crops. This book provides a definitive reference volume on the biology of aphids, their pest status, and how to control them.

It includes approximately 30 specially commissioned 4/5(1). Grey-white root aphids, on the other hand, live in the soil and can attack plants causing them to suddenly wilt and die.

Aphids can transmit mosaic virus to plants, which turns the leaves a mottled yellow colour and stunts growth. They excrete a sticky honeydew on plants that can be home to sooty molds, blocking the leaf pores. Past studies have identified 18 species of aphids attacking tomato in open-field agriculture and greenhouses.

However an in-depth review of the literature reveals only two species, Macrosiphum euphorbiae (Thomas) and Myzus persicae (Sulzer), as frequent and common aphid pests of tomato throughout the world. In this chapter, we review the identification, general biology. Root Aphids How to spot and organically control root aphids.

A growing pest of greenhouse and garden plants. Description Root aphids — aphids that stay at or above the soil line — are from the family Phylloxera, a near-cousin of are an escalating problem, especially among indoor growers, and spreading through parts of the country where they haven’t been seen before.

Eggs are very tiny, shiny-black, and are found in the crevices of bud, stems, and barks of the usually do not lay eggs in warm parts of the world. Nymphs (immature stages) are young aphids, they look like the wingless adults but are become adults within 7 to 10 days.

Adults are small, 1 to 4 mm long, soft-bodied insects with two long antenna that resemble horns. Biology of Aphids (Studies in Biology) (Volume 44) A. Dixon. Published by Hodder () ISBN ISBN 13 Condition: Good.

Ships from the UK. Former Library book. Shows some signs of wear, and may have some markings on the inside. Seller Inventory # GRP More information about this seller | Contact this. Assuming aphids evolved in temperate latitudes, the link between recombination and egg-production on a primary host is a historical legacy.

Nevertheless some aphids engage in recombination extremely rarely, as do bacteria. A number of aphids are anholocyclic - they reproduce parthenogenetically all year round without a sexual phase.

Aphid eggs are sought after by some species of ants, who will nurture a colony of aphids to feed on their sugar and nutrient rich excrement. A common misunderstanding is the referencing of Root Aphids to phylloxera, which is another family of insects that is very similar to aphids but lacks the telltale "tailpipes" and "honeydew" discharge that.

Fully revised and updated, this new edition of Aphids on the Worlds Crops is the only publication to provide non-specialist workers wherever they are in the world, with an identification guide and an information source on one of the main groups of agriculturally important insects.

It incorporates: * The latest information on the biology and distribution of both major and minor aphid pest.

Without a doubt aphids are one of the most common pests affecting crops worldwide. There are both root and leaf aphids, the former which generally live only around plant roots – producing winged offspring only to infest new plants – while the later live generally in plant stems, leaves and – when infestations are bad enough – even within plant flowers and fruits.This book combines fundamental information about aphids with chapters addressing state-of-the-art research in topics such as aphid-related phylogeny, genome biology, epigenetics and chemical ecology.

The chapters have been compiled by experts in the field to provide a valuable and accessible source of information for researchers and for.