Effect of rice straw biochar and irrigation on growth, dry matter yield and radiation-use efficiency of maize grown on an Acrisol in Ghana

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  • Eric Oppong Danso, Univ Ghana, University of Ghana, Sch Agr, Forest & Hort Crops Res Ctr
  • ,
  • Adam Yakubu, Univ Ghana, University of Ghana, Sch Agr, Forest & Hort Crops Res Ctr
  • ,
  • Emmanuel Arthur
  • Edward B. Sabi, Univ Ghana, University of Ghana, Sch Engn Sci, Dept Agr Engn
  • ,
  • Stephen Abenney-Mickson, Cent Univ, Sch Engn & Technol
  • ,
  • Mathias N. Andersen

In order to determine whether the current low productivity associated with rainfed cultivation on degraded soils in Ghana can be improved by biochar amendment and irrigation, field experiments with maize were conducted over two seasons in 2017 and 2018. Rice straw biochar at rates of 0 t/ha (B-0), 15 t/ha (B-15) and 30 t/ha (B-30) was combined with irrigation regimes of full irrigation (I-100), deficit irrigation (I-60) and no irrigation (I-0). The I-100 treatment was irrigated to field capacity every 3-4 days according to time domain reflectometry measurements while the I-60 treatment received 60% of the irrigation amount given to I-100 but with the same irrigation frequency. The I-0 treatment was not irrigated. In both seasons, the B-30 treatment recorded the highest total dry matter yield (TDMY), intercepted photosynthetically active radiation (IPAR) and radiation-use efficiency (RUE) and these were significantly (p

TidsskriftJournal of Agronomy and Crop Science
Sider (fra-til)296-307
Antal sider12
StatusUdgivet - 2020

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