EFFECTS OF FBIOCHAR APPLICATION IN THE AMELIORATION OF STRESS CAUSED BY ATHELIA ROLFSIT (SACC) TU & KIM. ON FIVE ACCESSIONS OF ARACHIS HYPOGAEA L.
Abstract
ABSTRACT
This study aims to investigate the extent to which soil amendment with biochar can promote growth and induce in Arachis hypogaea accessions (TAH-183, TAH-142, TAH-164,TAH-124and TAH-134) inoculated with Athelia rolfsii. The experiment was set up in a complete block design. 3 seeds A. hypogaea accessions were planted in 7kg of sterilized soil in triplicates (control(C), A. rolfsii alone (T) and A. rolfsii+Biochar (A+B). A. rolfsii was obtained from Botany pathology laboratory and spawned with 300g of millet seeds. 5g of colonized seeds were used to inoculate A. hypogaea accessions seedlings. Growth parameters and disease severity index (DSI) were taken using standard methods, while the total photosyntheticpigments (TPP) was determined using the atLeaf chlorophyll meter.All A.hypogaea accessions showed 100% germination across all treatments after 11 days except TAH-183 (80%) and TAH-134 (60%). TAH-142 and TAH-183 accessions inoculated with A. rolfsii were the most susceptible with disease severity index of 50% and 33.30%respectively. However,biochar application treatments recorded 0% DSI for all accessions.At 6 weeks after planting, it was observed that inoculation of A. hypogaea accessions with A. rolfsii significantly (p
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