Allelopathy in Ecological Agriculture and Forestry

1. Front Matter

   Pages i-x

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2. Ecological Agriculture

   1. Front Matter

      Pages xi-xi

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   2. Proceedings of congress

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

      Pages 1-9

   3. Allelopathy in ecological agriculture

      • S. S. Narwal

      Pages 11-32

   4. Allelopathic strategies for eco-friendly crop protection

      • S. Facknath, B. Lalljee

      Pages 33-46

   5. Allelopathic interactions in soil

      • B. Lalljee, S. Facknath

      Pages 47-58

   6. Eco-friendly technologies for management of phytoparasitic nematodes in pulses and vegetable crops

      • Vijayalakshmi Mojumder

      Pages 59-69

3. Allelochemicals as Herbicides

   1. Front Matter

      Pages 71-71

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   2. Plant and microbial compounds as herbicides

      • Robert E. Hoagland, Stephen J. Cutler

      Pages 73-99

   3. Discovery of the triketone class of HPPD inhibiting herbicides and their relationship to naturally occurring β-triketones

      • Christopher G. Knudsen, David L. Lee, William J. Michaely, Hsiao-Ling Chin, Nhan H. Nguyen, Ronald J. Rusay et al.

      Pages 101-111

   4. Phytotoxins as potential herbicides

      • Fumio Sugawara

      Pages 113-128

   5. Evaluation of selected pharmaceuticals as potential herbicides: bridging the gap between agrochemicals and pharmaceuticals

      • Stephen J. Cutler, Robert E. Hoagland, Horace G. Cutler

      Pages 129-137

4. Multiple Cropping Systems

   1. Front Matter

      Pages 139-139

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   2. Allelopathic interactions in multiple cropping systems

      • S. S. Narwal

      Pages 141-157

   3. Prospects of allelopathic research in multi-storey cropping systems

      • Jacob John, A. M. Nair

      Pages 159-179

5. Agroforestry Systems

   1. Front Matter

      Pages 181-181

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   2. Allelopathy in forest ecosystems

      • M. S. Reigosa, L. Gonzalezy, X. C. Souto, J. E. Pastoriza

      Pages 183-193

   3. Allelopathic interactions in agroforestry systems

      • A. S. Gill, J. V. N. S. Prasad

      Pages 195-207

   4. Allelopathy research in agroforestry systems of South India

      • C. S. Hunshal, H. T. Channal, A. R. Alagawadi, R. H. Patil

      Pages 209-227

   5. Tree allelopathy in agroforestry

      • M. Paramathma, J. A. Amal, M. Rajkumar

      Pages 229-235

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.

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

• Department of Agronomy, CCS Haryana Agricultural University, Hisar, India

  S. S. Narwal

• Natural Products Discovery Group, Southern School of Pharmacy, Mercer University, Atlanta, USA

  Robert E. Hoagland

• Southern Weed Science Research Unit, USDA-ARS, Stoneville, USA

  Robert E. Hoagland

• Department of Plant Biology and Soil Science, Faculty of Science, University of Vigo, Vigo-E, Spain

  M. J. Reigosa

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