EFFECT OF FUMIGANT AND PESTICIDES ON THE MYCORRHIZATION AND NODULATION OF TREE LEGUME SEEDLINGS

Authors

  • K. Udaiyan*, T. Muthukumar, K. Vasantha, S. Greep & V. Narmatha Bai

Keywords:

AM, formaldehyde fumigation, pesticide drench, root colonisation, forest tree legume, seedlings

Abstract

The influence of formaldehyde fumigation and pesticide drenching with Bavistin, Cuman, Copperthom, Sulfex, Furadan, and Termix on the dynamics of root colonisation by arbuscular mycorrhizal (AM) fungi, spore number and rhizobial nodule number was investigated. Plant growth and nutrient accumulation were assessed regularly for a period of 90 days in the forest tree legumes, viz. Acacia mellifera, A. nilotica and Leucaena leucocephala, under open nursery conditions. Pesticide drenching initially enhanced AM fungal colonisation and spore count gradually increased with age of the seedlings. Sulfex and Termix treatments significantly increased the spore number 90 days after emergence in all three tree legumes. Termix treatment enhanced the nodule numbers of the seedlings at 30 day after emergence in all three tree legumes. Sulfex responded at later stages when compared with the control, though the nodulation positively correlated with the age of the seedlings. Pesticides reduced plant growth of the legume seedlings at all age levels. Nitrogen and potassium contents were higher in seedlings grown in formaldehyde fumigated beds than in the control, but the accumulation of phosphorus was lower in all pesticide treatments.

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Published

2022-09-09

How to Cite

K. Udaiyan*, T. Muthukumar, K. Vasantha, S. Greep & V. Narmatha Bai. (2022). EFFECT OF FUMIGANT AND PESTICIDES ON THE MYCORRHIZATION AND NODULATION OF TREE LEGUME SEEDLINGS. Journal of Tropical Forest Science (JTFS), 13(1), 19–30. Retrieved from https://jtfs.frim.gov.my/jtfs/article/view/1322

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