Naslov
Dormancy and germination of velvetleaf (Abutilon theophrasti Medik.) and redroot pigweed (Amaranthus retroflexus L.) seeds

Autori
Ravlić, Marija ; Baličević, Renata ; Lucić, Pavo ; Mazur, Petra ; Lazić, Aleksandar

Izvornik
Herbologia (1840-0809) 15 (2015), 2; 27-39

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
seed dormancy ; germination ; weeds ; sowing depth

Sažetak
The aim of the study was to determine the influence of different methods on breaking seed dormancy of weed species velvetleaf (Abutilon theophrasti Medik.) and redroot pigweed (Amaranthus retroflexus L.). The influence of seed sowing depth on emergence and growth of weeds was also evaluated. The results showed that the best treatment for breaking seed dormancy of velvetleaf was immersion of seeds in hot water (60°C) for 1 hour, while immersion in distilled water and 0.2% KNO3 solution had no significant effect. Seed germination of redroot pigweed was significantly increased in all treatments, however 2% KNO3 solution and cold stratification at 5ºC for 12 days had the greatest effect. Treatments had different influence on mean germination time, seed germination dynamics and seedling length of weeds. The highest percentage of emerged velvetleaf seedlings was recorded when seeds were sown at 1 to 4 cm depths and ranged from 55.6 to 67.9%. With the increase of sowing depth the emergence percentage decreased, however one quarter and one fifth of the seedlings emerged from 7 and 9 cm depths. Both seedling length and fresh weight were greater at lower sowing depths. Emergence of redroot pigweed was not significantly influenced by sowing depth, however seedlings length and fresh weight were greater at 5 cm depth than at 1 cm.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA