Summary
Amendment of soil with margosa cake or sawdust supplemented with NPK fertilizers increased its phenolic content. The concentration of total phenols was related to the amount of amendment used and varied with the length of decomposition period. Total phenols estimated in ether extract were more in margosa cake amended soil than in sawdust amended soil. Roots of tomato plants grown in amended soil showed presence of higher quantity of total phenols than those grown in non-amended soil. Exposure of females ofMeloidogyne javanica to benzoic, phenyl butyric, phenyl acetic and cinnamic acids significantly reduced their egg laying capacity. Suppression of larval motility was one of the main direct effects of these acids on the nematode. Exposure of tomato roots to different concentrations of phenyl acetic, benzoic, phenyl butyric and cinnamic acids imparted some resistance to invasion by the nematode. In such treated plants fewer larvae could penetrate the roots and develop into mature females and fewer eggs were produced.
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Research paper No.1455 through the Experiment Station G.B.P.U,A, & T., Pantnagar
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Sitaramaiah, K., Singh, R.S. Effect of organic amendment on phenolic content of soil and plant and response ofMeloidogyne javanica and its host to related compounds. Plant Soil 50, 671–679 (1978). https://doi.org/10.1007/BF02107218
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DOI: https://doi.org/10.1007/BF02107218