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

In: Journal of Hydrology and Hydromechanics, vol. 62, no. 4
Dario Mantovani - Maik Veste - Stella Gypser - Christian Halke - Laurie Koning - Dirk Freese - Stefan Lebzien
Detaily:
Rok, strany: 2014, 316 - 323
Kľúčové slová:
Water use efficiency; Transpiration coefficient; Photosynthesis; Nitrogen; Ecophysiology; Lysimeter; Fallopia.
URL originálneho zdroja: http://www.ih.savba.sk/jhh
O článku:
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.
Ako citovať:
ISO 690:
Mantovani, D., Veste, M., Gypser, S., Halke, C., Koning, L., Freese, D., Lebzien, S. 2014. Transpiration and biomass production of the bioenergy crop Giant Knotweed Igniscum under various supplies of water and nutrients. In Journal of Hydrology and Hydromechanics, vol. 62, no.4, pp. 316-323. 0042-790X (until 2019) .

APA:
Mantovani, D., Veste, M., Gypser, S., Halke, C., Koning, L., Freese, D., Lebzien, S. (2014). Transpiration and biomass production of the bioenergy crop Giant Knotweed Igniscum under various supplies of water and nutrients. Journal of Hydrology and Hydromechanics, 62(4), 316-323. 0042-790X (until 2019) .