The influence of Ambrosia trifida on vegetative production of A. artemisiifolia
| Autor: | Sava Vrbničanin, Ana Mileusnic, Danijela Pavlović, Aleksandra Savić, Dragana Bozic |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Ragweed Randomized block design lcsh:Plant culture 01 natural sciences 030308 mycology & parasitology 03 medical and health sciences Dry weight lcsh:SB1-1110 Electrical and Electronic Engineering Ambrosia artemisiifolia 0303 health sciences giant ragweed biology Crop yield vegetative parameters common ragweed Building and Construction Interspecific competition 15. Life on land biology.organism_classification Horticulture Ambrosia trifida Ambrosia Weed competition ambrosia 010606 plant biology & botany |
| Zdroj: | Pesticidi i Fitomedicina, Vol 35, Iss 2, Pp 105-115 (2020) Pesticidi i fitomedicina (2020) 35(2):105-115 |
| ISSN: | 2406-1026 1820-3949 |
| Popis: | Ambrosia artemisiifolia (common ragweed) and A. trifida (giant ragweed) are very important weed species that are invasive in Serbia and are often found in agricultural regions. When these weeds are present at high densities, crop yields can be significantly reduced or even completely destroyed. Unlike A. artemisiifolia, A. trifida is locally present in the Central Backa region (Vojvodina province), and it is expected that its area of distribution will expand in the future. Starting from the assumption that future distribution of A. trifida could take on larger proportions than now, the aim of this study was focused on examining the interaction between these two species. Experiments were conducted using the replacement design model, in which Ambrosia trifida/Ambrosia artemisiifolia per m2, were planted as density ratios of 10/0; 8/2; 4/6; 6/4; 2/8, and 0/10, in a completely randomized block system with four replications. The vegetative parameters (height and dry mass) of A. artemisiifolia were measured in July, August and September over a period of two years (2016 and 2017), and the results were statistically analysed in the Statistical Package for the Social Sciences (SPSS 23). In July 2016, the average height of A. artemisiifolia was in the range between 35.00 and 50.40 cm, in August it was from 68.00 to 95.50 cm, and between 83.75 and 99.80 cm in September. In the following season (2017), the corresponding values ranged from 56.19 to 78.50 (July), 98.38 to 125.50 cm (August) and 111.19 to 148.50 (September). An increase in the number of A. artemisiifolia plants and decrease in A. trifida counts per m2 caused an increase in the dry mass of A. artemisiifolia per plant. The dry mass of A. artemisiifolia ranged from 4.22 to 6.11 g/plant (July), 8.96 to 10.27 g/plant (August) and 7.04 to 19.53 g/plant (September). In the following season, these values ranged from 9.62 to 14.60 g/plant, 14.37 to 28.90 g/plant, and 23.43 to 40.47 g/plant in July, August and September, respectively. Minimum values of vegetative parameters were recorded in the treatment with 2 plants, and maximum in the treatment with 10 A. artemisiifolia plants/m2. This means that interspecific competition is more pronounced in this ragweed species than intraspecific competition. |
| Databáze: | OpenAIRE |
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