Izvorni znanstveni članak
Inter-population emergence variability of weed species Abutilon theophrasti Med.
Marijana Plodinec
Maja Šćepanović
orcid.org/0000-0003-4661-5417
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Klara Barić
orcid.org/0000-0002-1341-8954
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Dario Jareš
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Sažetak
Most weed species have inter-population variability which is manifested by dormancy, germination and weeds emergence. Knowledge of interpopulation variability is necessary for the development of forecasting models of emergence which are the basis for rational application of herbicides. The aim of this study was to determine the total and dynamics of emergence and the growing degree days required for the emergence of 12 populations of the weed species Abutilon theophrasti Med. Field trial was set up in 2013. at Maksimir experimental station of University of Zagreb Faculty of Agriculture as complete randomized block design in 3 replicates. Treatments in experiments were 12 velvetleaf populations (10 from Europe and 2 from USA). Results suggested that pedoclimatic conditions can greatly affect emergence of researched weed species which was very low in average (15,21%). Nevertheless, significant differences were detected in emergence between the studied populations. The greatest total emergence (23.7-30.7%), the fastest dynamic of emergence (77 days for first emergence) and the lower GDD (273 degree days for emergence) were determined for USA populations and for population from Croatia. Results confirmed the inter-population variability of weed species Abutilon theophrasti and indicate the need for setting up field trials in different site-specific environments.
Ključne riječi
velvetleaf; inter-population variability; dynamics of emergence; growing degree days; modeling weed emergence
Hrčak ID:
152897
URI
Datum izdavanja:
8.2.2016.
Posjeta: 1.105 *