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Journal of Applied Sciences
Year: 2014  |  Volume: 14  |  Issue: 16  |  Page No.: 1851 - 1857

Root and Stem Damage Caused by Termite-fungi Interaction on Rice

O.E. Oyetunji, C.O. Peluola, F.E. Nwilene and A. Togola    

Abstract: Termites are serious biotic threat to rainfed upland rice ecology. The objective of this study was to evaluate the root and stem damage caused by the effect of termite-fungi (Botryodiplodia theobromae and Trichoderma sp.) interaction on three upland rice varieties (OS 6, LAC 23 and NERICA 1) planted on ultisol soil under screenhouse condition. It was laid on Randomized Complete Block Design (RCBD) with three replications. The results showed that rice variety OS 6 was found to be most susceptible to termite infestation and the termite- fungi interaction as the damage caused on root was high. The root weight was low indicating the level of susceptibility of rice varieties (OS 6>NERICA 1>LAC 23) to termite infestation and damage. NERICA 1 treated with termite, termite+Botryodiplodia and Botryodiplodia only had significant low root weight, OS 6 treated with Trichoderma only, termite+Botryodiplodia and Termites+Trichoderma had significant root weight reduction. The stem girth taken was significantly low in some treatments with termite and fungi. LAC 23 treated with termite+ Botryodiplodia had low stem girth even at three weeks after treatment. NERICA 1 treated with termites had significant low stem girth while OS 6 treated with termite+Trichoderma had low stem girth. The nutrient uptake by the roots of rice plant treated with the two fungi was significantly low. The studies harness the economic importance of Botryodiplodia theobromae and Trichoderma spp., which penetrate into rice plant via termite attack.

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