Transpiration and biomass production of the bioenergy crop Giant Knotweed Igniscum under various supplies of water and nutrients

Title:

Transpiration and biomass production of the bioenergy crop Giant Knotweed Igniscum under various supplies of water and nutrients

Creator:

Mantovani, Dario, Veste, Maik, Gypser, Stella, Halke, Christian, Koning, Laurie, Freese, Dirk, and Lebzien, Stefan

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:de1a4b06-1835-49ca-9b7a-c7459e810a93
uuid:de1a4b06-1835-49ca-9b7a-c7459e810a93
doi:10.2478/johh-2014-0028

Subject:

water use efficiency, transpiration coefficient, photosynthesis, nitrogen, ecophysiology, Lysimeter, and Fallopia

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Soil water availability, nutrient supply and climatic conditions are key factors for plant production. For a sustainable integration of bioenergy plants into agricultural systems, detailed studies on their water uses and growth performances are needed. The new bioenergy plant Igniscum Candy is a cultivar of the Sakhalin Knotweed (Fallopia sachalinensis), which is characterized by a high annual biomass production. For the determination of transpiration-yield relations at the whole plant level we used wicked lysimeters at multiple irrigation levels associated with the soil water availability (25, 35, 70, 100%) and nitrogen fertilization (0, 50, 100, 150 kg N ha-1). Leaf transpiration and net photosynthesis were determined with a portable minicuvette system. The maximum mean transpiration rate was 10.6 mmol m-2 s-1 for well-watered plants, while the mean net photosynthesis was 9.1 µmol m-2 s-1. The cumulative transpiration of the plants during the growing seasons varied between 49 l (drought stressed) and 141 l (well-watered) per plant. The calculated transpiration coefficient for Fallopia over all of the treatments applied was 485.6 l kg-1. The transpiration-yield relation of Igniscum is comparable to rye and barley. Its growth performance making Fallopia a potentially good second generation bioenergy crop.

Language:

Slovak

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

316-323

Source:

Journal of hydrology and hydromechanics | 2014 Volume:62 | Number:4

Harvested from:

CDK

Metadata only:

false