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001-es BibID:	BIBFORM036077
Első szerző:	Novák Adrienn (agrármérnök)
Cím:	The effect of plant density on the yield and phytopathological properties of sunflower (Helianthus annuus L.) in crop years with different water-supply / Novák Adrienn, Pepó Péter
Dátum:	2012
ISSN:	0546-8191 2060-8543
Megjegyzések:	The response of the sunflower hybrid PR64H42 to different plant densities in crop years with different water-supply (2010 and 2011) has been investigated on a chernozem soil type. Our research work focused on the factors mostly affected by the amount of precipitation (stalk breaking, infection by phytopathogens, and yield). We found significant stalk breaking in 2010 (33.8%) due to the high amount of precipitation and the heavy Sclerotinia infection. In 2011 the rate of lodging was lower but still significant (20.7%) due to the high amount of rainfall in July. Parallel to the higher plant densities the infection rate increased in case of all four investigated phytopathogens, because the higher plant densities ensured better microclimatic conditions for the expansion of phytopathogens. We found differences between the two investigated crop years. The crop year of 2010 was extremely wet, therefore the infection rate was high in case of all four phytopathogens (Scelortinia: 23.9%, Phoma: 71.4%, Alternaria: 51.8%, Diaporthe: 70.3% - in the average of different plant densities). In 2011 mainly Alternaria and Diaporthe caused the highest infection of the plant (87.3%, 81%). As a result of our experiments it can be stated that from the aspect of yield amount (2010: 3018 kg ha-1, 2011: 3596 kg ha-1) the optimal plant density in the crop year of both 2010 and 2011 was 45 000 plants ha-1.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok konferenciacikk yield sunflower water-supply genotype plant density
Megjelenés:	Növénytermelés. - 61 : Suppl. (2012), p. 69-72. -
További szerzők:	Pepó Péter (1955-) (agrármérnök)
Pályázati támogatás:	TÁMOP-4.2.2/B-10/1-2010-0024 TÁMOP
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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