Download e-book for iPad: Allelopathy in Ecological Agriculture and Forestry: by S.S. Narwal, R.E. Hoagland, R.H. Dilday, M. J. Reigosa Roger

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 gasoline dependent agrochemicals corresponding to fertilizers and insecticides to provide the necessary agricultural and forestry items. This has exerted a good 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) regulate has led to critical 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 on the topic of the plants they infest have constructed. In bugs, state of affairs is such a lot 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) larger environmental toxins and future health 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 turn out harmful to even our destiny generations. (E) a few agricultural commodities could include minute amounts ofpesticides residues, with lengthy tenn opposed results on human and cattle health and wellbeing. accordingly, severe ecological questions on the reliance on insecticides for pests regulate has been raised. using fertilizers, along with inflicting environmental difficulties has additionally impoverished the soil wellbeing and fitness and reduced the valuable soil fauna. for instance, in a few significant crop rotations viz.

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Additional resources 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

Sample text

It also enhanced the oil content of sunflower by 4%. It has proved beneficial to vegetables, flowers, fruits, pastures and forest species. Triacontanol, a 30-carbon primary alcohol, was isolated as a growth promoting compound from alfalfa. Its foliar applications increased the yields in cucumber, carrot, rice, com, soybean and others. Inconsistent results, perhaps due to accumulation problems and to method, rate and time of application, reduced its efficacy (69). ) pollen as a yield stimulant. Brassinolide and several analogues have been synthesized (81) but they are too expensive for use in field crops.

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D. A. (1986). Influence of mulch, tillage and diphenemid on weed control, yield and quality in no-till flue cured tobacco (Nicotiana tobaccum). Weed Science 34 : 738-744. 128. S. K. (1994). Field evaluation of neem based formulations against whitefly (Bemisia tabaci) on cotton in Punjab. 7, pp. 128. 128a. B. (1983). Role ofagroforestry in improving the environment. Indian Farming 35: 15-19. 129. S. S. (1983). Effect of preceding crops and P manuring on N rquirement ofsucceeding mustard crop. Journal ofResearch, Haryana Agricultural University 13 : 587-592.

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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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