New PDF release: Allelopathy in Ecological Agriculture and Forestry:

By S.S. Narwal, R.E. Hoagland, R.H. Dilday, M. J. Reigosa Roger

ISBN-10: 9401058172

ISBN-13: 9789401058179

ISBN-10: 9401141738

ISBN-13: 9789401141734

The swiftly transforming into human inhabitants has elevated the dependence on fossil gas established agrochemicals comparable to fertilizers and insecticides to supply the mandatory agricultural and forestry items. This has exerted an excellent strain at the non­ renewable fossil gasoline assets, which can't final indefinitely. in addition to, indiscriminate use ofpesticides for pests (weeds, bugs, nematodes, pathogens) keep watch over has ended in severe ecological and environmental difficulties viz. , (A) expanding prevalence of resistance in pest organisms to big insecticides. (B) Shift in pests inhabitants, particulary in weeds and bugs. In weeds, species which are extra heavily concerning the vegetation they infest have built. In bugs, situation is so much grim, the predators were killed and minor insect pests became significant pests and require very heavy doses ofhighly poisonous pesticides for his or her regulate. (C) higher environmental toxins and wellbeing and fitness dangers (a) relatively from infection of floor and underground consuming water assets and (b) from their inhalation in the course of dealing with and alertness. (D) poisonous residues of insecticides pollute the surroundings and will end up dangerous to even our destiny generations. (E) a few agricultural commodities could include minute amounts ofpesticides residues, with lengthy tenn hostile results on human and cattle healthiness. consequently, severe ecological questions on the reliance on insecticides for pests keep watch over has been raised. using fertilizers, along with inflicting environmental difficulties has additionally impoverished the soil health and wellbeing and lowered the precious soil fauna. for instance, in a few significant crop rotations viz.

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Additional info for 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

Example text

1986). W. to fight Parthenium hysterophorus L. Current Science 55: 261-262. 63. B. M. R. (1994). 7, pp. 129. 64. K. and Kaushik, N. (1994). Relative efficacy of oil seed cakes, crops straw and saw dust against seedling blight of eucalypts (E. ). 7, pp. 113. 65. K. (1994). S. Narwal and P. Tauro), pp. 65-91 Jodhpur, India: Scientific Publishers. 66. S. N. (1987). Effects of azolla as an organic source of nitrogen in rice-wheat cropping systems. Journal ofAgronomy and Crop Science 159: 212-215. 67.

Its numerous allelochemicals have been isolated and identified, however, their application for pest control is limited owing to high mammalian toxicity. Other Meliaceae include Cedrela odorata (spanish cedar) and Trichilia roka, whose limonoids are antifeedants to Spodoptera eridania, and sendanin which is a growth inhibitor for Heliothis virescens. Toona ciliata yield toonacilin and 6-acetoxytoonacilin which are antifeedant and insecticidal to Hipsiphyla grandella . In Rutaceae, Citrus paradisi limonoids are antifeedants to Spodoptera litura, while citrus oils deter several stored product insect species.

Effects of the Bilocus in cucumber on reproduction, attraction and response of the plant to infection by the southem root-knot nematode. Journal of American Horticultural Science 101: 422-424. 56. I. (1988). ea mays L. and Sorghum bicolor. Agriculture, Ecosystems and Environment 24 : 453-58. 57. International Allelopathy Society (1996). Department of Biochemistry, Oklahoma State University, Stillwater, USA. 58. K. S. (1988). Effect of degradation of neem leaves on incidence of root-knot nematode in tomato.

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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 by S.S. Narwal, R.E. Hoagland, R.H. Dilday, M. J. Reigosa Roger


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