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Allelopathy in Ecological Agriculture and Forestry

Proceedings of the III International Congress on Allelopathy in Ecological Agriculture and Forestry, Dharwad, India, 18–21 August 1998

  • S. S. Narwal
  • Robert E. Hoagland
  • R. H. Dilday
  • M. J. Reigosa

Table of contents

  1. Front Matter
    Pages i-x
  2. Ecological Agriculture

    1. Front Matter
      Pages xi-xi
    2. S. S. Narwal, Robert E. Hoagland, R. H. Dilday, M. J. Reigosa
      Pages 1-9
    3. S. S. Narwal
      Pages 11-32
    4. S. Facknath, B. Lalljee
      Pages 33-46
    5. B. Lalljee, S. Facknath
      Pages 47-58
  3. Allelochemicals as Herbicides

    1. Front Matter
      Pages 71-71
    2. Robert E. Hoagland, Stephen J. Cutler
      Pages 73-99
    3. Christopher G. Knudsen, David L. Lee, William J. Michaely, Hsiao-Ling Chin, Nhan H. Nguyen, Ronald J. Rusay et al.
      Pages 101-111
    4. Fumio Sugawara
      Pages 113-128
  4. Multiple Cropping Systems

    1. Front Matter
      Pages 139-139
  5. Agroforestry Systems

    1. Front Matter
      Pages 181-181
    2. M. S. Reigosa, L. Gonzalezy, X. C. Souto, J. E. Pastoriza
      Pages 183-193
    3. A. S. Gill, J. V. N. S. Prasad
      Pages 195-207
    4. C. S. Hunshal, H. T. Channal, A. R. Alagawadi, R. H. Patil
      Pages 209-227
    5. M. Paramathma, J. A. Amal, M. Rajkumar
      Pages 229-235
  6. Back Matter
    Pages 245-267

About this book

Introduction

The rapidly growing human population has increased the dependence on fossil fuel based agrochemicals such as fertilizers and pesticides to produce the required agricultural and forestry products. This has exerted a great pressure on the non­ renewable fossil fuel resources, which cannot last indefinitely. Besides, indiscriminate use ofpesticides for pests (weeds, insects, nematodes, pathogens) control has resulted in serious ecological and environmental problems viz. , (A) Increasing incidence of resistance in pest organisms to important pesticides. (B) Shift in pests population, particulary in weeds and insects. In weeds, species that are more closely related to the crops they infest have developed. In insects, scenario is most grim, the predators have been killed and minor insect pests have become major pests and require very heavy doses ofhighly toxic insecticides for their control. (C) Greater environmental pollution and health hazards (a) particularly from contamination of surface and underground drinking water resources and (b) from their inhalation during handling and application. (D) Toxic residues of pesticides pollute the environment and may prove hazardous to even our future generations. (E) Some agricultural commodities may contain minute quantities ofpesticides residues, with long tenn adverse effects on human and livestock health. Therefore, serious ecological questions about the reliance on pesticides for pests control has been raised. The use of fertilizers, besides causing environmental problems has also impoverished the soil health and decreased the beneficial soil fauna. For example, in some major crop rotations viz.

Keywords

Agricultural Sciences Flora cropping systems crops development ecosystem farmers forest organization pesticides

Editors and affiliations

  • S. S. Narwal
    • 1
  • Robert E. Hoagland
    • 2
    • 3
  • R. H. Dilday
  • M. J. Reigosa
    • 4
  1. 1.Department of AgronomyCCS Haryana Agricultural UniversityHisarIndia
  2. 2.Natural Products Discovery GroupSouthern School of Pharmacy, Mercer UniversityAtlantaUSA
  3. 3.Southern Weed Science Research UnitUSDA-ARSStonevilleUSA
  4. 4.Department of Plant Biology and Soil Science, Faculty of ScienceUniversity of VigoVigo-ESpain

Bibliographic information

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