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Title:Biochar effects on soybean growth and nodulation
Author(s):Bayan, M.R.
Subject(s):sustainable agriculture
soil health
Abstract:M. R. Bayan - Assistant Professor, Department of Agriculture & Environmental Sciences at Lincoln University in Jefferson City, MO. Soybean (Glycine max) was grown in a greenhouse experiment using an Entisol. Pots contained 5 kg of soil and were fertilized with (0-85-90 kg/ha) prior to plantation. Plants were thinned at stage VC to one per pot. Treatments consisted of biochar, 2% and 5% by weight, mixed with soil after passing through 1 cm sieve. Biochar was produced from three feedstocks, a ligneous, pine (Pinus strobes), and two herbaceous, switchgrass (Panicum virgatum) and miscanthus (Miscanthus giganteus). Growth was significantly enhanced by 2% biochar. At 5%, biochar caused stunting that was significant in the case of switchgrass biochar. Biochar increased leaf area more significantly at the 2% rate. Biochar significantly increased pod formation at stage R4, increasing number and total weight of pods. The effect of biochar on nodulation varied; pine biochar increased while herbaceous biochars reduced nodulation. Switchgrass biochar (5%) decreased nodulation by 54% while pine biochar (2%) increased nodule formation by 35% over the control.
Issue Date:2013-06-14
Series/Report:2013 Midwest Biochar Conference
Genre:Conference Paper / Presentation
Date Available in IDEALS:2020-05-07

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