Naslov
Influence of sowing density and fungicide application on rapeseed seed and oil yields

Autori
Pospišil, Milan ; Pospišil, Ana ; Butorac, Jasminka ; Mustapić, Zvonko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Zbornik sažetaka / Pospišil, Milan - Zagreb : Agronomski fakultet Sveučilišta u Zagrebu, 2008

ISBN
978-953-6135-66-0

Skup
43rd Croatian and 3rd International Symposium on Agriculture

Mjesto i datum
Opatija, Hrvatska, 18.02.2008. - 21.02.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
rapeseed; sowing density; fungicide; yield

Sažetak
To determine the optimal sowing density and fungicide application for rapeseed crops in our agroecological conditions, exact micro-trials were set up at the experimental facility of the Faculty of Agriculture in Zagreb in the period 2005-2007. The trial involved five seed rates (30, 50, 70, 90 and 110 germinated seeds /m2) and crop treatment with fungicides (metconazole 60 g/l, preparation "Caramba") as well as no treatment. The hybrid cultivar Elvis served as trial crop. In all three trial years, rapeseed was sown at the optimal time (beginning of September), at a row spacing of 20 cm, at seed rates of 1.78 ; 2.97 ; 4.16 ; 5.35 and 6.53 kg/ha, the average 1000 seed weight being 5.61 g. Fungicide "Caramba" was applied in the autumn at a dose of 0.75 l/ha (in the 6-leaf stage, BBCH 16-18) and in the spring, 1.25 l/ha (prior to flowering, BBCH 39-55). Rapeseed was sown and harvested with the aid of special machinery for small areas. Other technology was the same as that applied in regular rapeseed production. Trials were laid out according to the random block design with five replications. Emergence, achieved plant density and rapeseed yield were strongly influenced by the agroecological conditions, i.e., year and sowing density. Significantly highest seed yields (4.81 t/ha and 4.66 t/ha) were achieved in 2005 and 2006, respectively. Significantly highest oil content (47.4% in dry matter) and oil yield (2.01 t/ha) were obtained in 2006. In the three-year average, the significantly highest yields of seed (4.69 t/ha) and oil (1.85 t/ha) were achieved at the seed rate of 70 germinated seeds/m2, i.e. plant density at harvest of 35 (29-48) plants/m2. Fungicide application had no significant effect on seed and oil yields of rapeseed.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA