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001-es BibID:	BIBFORM071939
Első szerző:	Vincze Éva (környezetgazdálkodási agrármérnök)
Cím:	Studies of Photosynthetic capacity in winter oilseed rape (Brassica napus var. napus f. biennis l.) production / Vincze Éva
Dátum:	2016
ISSN:	0546-8191
Megjegyzések:	In our experiment we measure plant physiological parameters in Arkaso winter oilseed rape hybrid: relative chlorophyll content (SPAD) measurements at seven different date (24.03.2015; 02.04; 17.04; 29.04; 12.05; 28.05; 09.06). The experiment has been set up in the University of Debrecen Centre for Agricultural Sciences (ATK) Látóképi Experimental Station in two different sowing times (I 22.08.2014 and II. 09.09.2014 due to poor crop germination we repeat sowing on 01.10.2014), three different plant density 200, 350 and 500 thousand ha-1, four replication of the same nutrient supply with using a line spacing of 45 cm. In the experiment the fore crop was winter wheat. We made our measurement with a portable, dual wavelength Konica Minolta Soil Plant Analysis Development (SPAD) 502-type hand-held device. The unit measure relative chlorophyll content in SPAD value (SPAD index) what expresses from the red and infrared light intensity from the leaves reflection. The chlorophyll content provides information about the physiological status of the plants, as the various natural and anthropogenic stress factors affect the amount of chlorophyll. During measurement we get the top value of chlorophyll content in the first sowing date in the 500,000 plant density, while we get the same result in the second sowing date in 350,000 plant density.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok konferenciacikk winter oil seed rape sowing date plant density LAI SPAD
Megjelenés:	Növénytermelés 65 : Suppl. (2016), p. 131-134. -
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