Responses of groundnut cultivar Tainan 9 to different strains of Rhizobium under field condition
1985
Banyong Toomsan | Nicharat Hemala (Khon Kaen Univ., Khon Kaen (Thailand). Faculty of Agriculture)
Twenty four groundnut Rhizobium strains and an uninoculated control were tested on the groundnut cultivar Tainan 9 in a field experiment at KKU. A randomized complete block design with six replicates was used. The inocula were prepared at ICRISAT and sent to Khon Kaen in sterilized peat packets. Viable plate count showed that these inocula contained 10(exp. 9)-10(exp. 10) rhizobia/g. peat. No difference among treatments in terms of nodule number, nodule dry weight, nitrogenase activity, plant dry weight at 60 days after planting and final pod yield. The failure to get a response to inoculation was thought to be due to high indigenous rhizobium population and/or the detrimental effect of the inoculation method used in this study (seed slurrying method with 40 % gum arabic as sticker).
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