Allelopathy: Basic and applied aspects by S. J. H. Rizvi, H. Haque, V. K. Singh, V. Rizvi (auth.), S.

By S. J. H. Rizvi, H. Haque, V. K. Singh, V. Rizvi (auth.), S. J. H. Rizvi, V. Rizvi (eds.)

Science is largely a descriptive and experimental machine. It observes nature, constructs hypotheses, plans experiments and proposes theories. the speculation isn't meditated because the 'final truth', yet continues to be ever topic to adjustments, adjustments and rejections. The technology of allelopathy in a similar fashion has emerged, and exists on an identical footing; our endeavour may be to maintain it clean and leading edge with addition of more moderen in­ formation and ideas with the rejection of older principles and antiquated concepts. prior to now few a long time encouraging effects were acquired in a number of facets of allelopathic researches. besides the fact that, as well as carrying on with efforts in a lot of these instructions, consistent makes an attempt are to be made to explain the mechanics of allelopathic job in molecular phrases and to find methods and capacity to take advantage of it for the welfare of mankind. We believe that multidisciplinary efforts are the one device to accomplish this target. it's the wish of the editors that this e-book will function a record which identifies an built-in procedure, by which examine either to appreciate and make the most allelopathy could be performed. the current quantity arose out of an try and collect eminent scientists in allelopathy to explain their paintings, of a hugely various nature, less than one title.

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Lehmann, R. G. and Cheng, H. H. (1988) Reactivity of phenolic acids in soils and formation of oxidation products. Soil Sci. Soc. Amer. , 52, 1304-9. Lehmann, R. , Cheng, H. H. and Harsh, J. B. (1987) Oxidation of phenolic acids by soil iron and manganese oxides. Soil Sci. Soc. Amer. , 51, 352-6. Mandava, N. B. (1985) Chemistry and biology of allelopathic agents, in The Chemistry of Allelopathy (ed. A. C. Thompson), ACS Symp. Ser. 268, Amer. Chern. , Washington, DC, pp. 33-54. Rice, E. L. (1984) Allelopathy, 2nd edn, Academic Press, Orlando, Florida.

The objective of this chapter is to develop a conceptual framework useful for reaching an understanding of the time-course fate of allelochemicals under natural conditions. The approach will be to characterize the processes and factors that affect the fate and transport of the chemical and to integrate their interactions from the point of entry of the chemical into the environment to the site of its exposure to the target plant. Once a chemical enters into the environment, a number of interacting processes will take place.

CHAPTER 3 A conceptual framework for assessing allelochemicals in the soil environment H. H. 1 INTRODUCTION There has been a surge of interests in recent years on the phenomenon of allelopathy, the chemical agents involved in allelopathy, and the role of allelopathy in crop production (Chou and Waller, 1983; Rice, 1984; Thompson, 1985; Waller, 1987). Studies have generally concentrated either on the symptoms and severity of the adverse effects on affected plants or on the production and identification of the allelochemicals from producing organisms.

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