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September 22, 2019  |  

Increasing sorghum yields by seed treatment with an aqueous extract of the plant Eclipta alba may involve a dual mechanism of hydropriming and suppression of fungal pathogens

Authors: Zida, P.E. and Néya, B.J. and Stokholm, M.S. and Jensen, S.M. and Soalla, W.R. and Sérémé, P. and O.S. Lund, O.S.

Background Soaking of sorghum seeds for six hours in an aqueous extract of Eclipta alba has been shown to increase the yield of sorghum in field experiments. The effect on yield is known to depend on field location and a mechanism involving pathogen suppression has been proposed. However, it has not been clear to which extent the same effect can be obtained by soaking of seeds in pure water (hydropriming). To address this question, fifty eight field tests were conducted comparing no treatment of seeds, hydropriming and treatment with plant extract. Experiments were distributed over three years in Burkina Faso on three locations previously showing a positive yield response to the plant extract. Results Despite strong variation across locations and years, a mean yield increase of 19.6% was found for hydropriming compared to no treatment (p?

Journal: Crop protection
DOI: 10.1016/j.cropro.2018.01.001
Year: 2018

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