Naslov
Emergence dynamics of Echinochloa crus-galli and Setaria pumila from an artificial soil seed bank

Autori
Šoštarčić, Valentina ; Masin, Roberta ; Lakić, Josip ; Pismarović, Laura ; Rubinić, Vedran ; Šćepanović, Maja

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

Izvornik
Zbornik sažetaka / - , 2023, 238-238

Skup
58th Croatian & 18th International Symposium on Agriculture

Mjesto i datum
Dubrovnik, Croatia, 11.02.2023. - 17.02.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
barnyardgrass, hydrothermal time, monocot weeds, thermal time, yellow foxtail

Sažetak
Echinochloa crus-galli and Setaria pumila are the most common annual grass weeds in summer crops. In the early growth stage, the two species are morphologically similar but differ in their sensitivity to various herbicides. To distinguish these species and determine the appropriate timing for control, the dynamics of their emergence were studied. Seeds of the two species were collected in Šašinovečki Lug (45°50'59.6" N 16°09'53.9" E) in autumn 2019 and 2021 and buried in weed-free soil at the Experimental Station of Faculty of Agriculture, Maksimir (45°82'62.67"N, 16°02'93.6"E) in November 2019 and 2021. In spring 2020 and 2022, the soil was disturbed to simulate seedbed preparation. Emergence was recorded three times a week. In both years, S. pumila emergence started earlier (on the 2nd and 4th days after soil disturbance in 2020 and 2022, respectively). The median (T50) thermal (TT) and hydrothermal time (HTT) to emergence was calculated. The value of T50 calculated as TT was 26.7 and 83.7°Cd for S. pumila in 2020 and 2022, respectively, whereas higher values were found for E. crus-galli (132.02 vs. 187.15°Cd, in 2020 and 2022). The HTT T50 for emergence was 10.35 and 34.42 MPa°Cd for S. pumila and 46.47 and 115.74 MPa°Cd for E. crus-galli in 2020 and 2022, respectively. The results indicate that S. pumila is the species with the earliest onset and shortest duration of emergence in the field. On the other hand, E. crus-galli has later and longer duration of emergence.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA