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Wyszukujesz frazę "weed control level" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
The effect of different agrotechnical levels on weed infestation in crops of naked and husked varieties of oat (Avena sativa L.)
Wpływ poziomu agrotechniki na zachwaszczenie zasiewów nagoziarnistej i oplewionej odmiany owsa (Avena sativa L.)
Autorzy:
Andruszczak, S.
Kwiecinska-Poppe, E.
Kraska, P.
Palys, E.
Powiązania:
https://bibliotekanauki.pl/articles/26771.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
agrotechnical level
weed infestation
crop
naked oat
husked oat
oat
Avena sativa
weed control level
Opis:
The present study was carried out in the period 2007– 2009 in the Experimental Farm in Bezek near the city of Chełm. The aim of the investigation was to compare weed infestation of the husked (Krezus) and naked (Cacko) oat cultivars cultivated under conditions of different weed control treatments. The following weed control levels were compared: A – control object; B – harrowing twice; C – application of the herbicide Mustang 306 SE; D – herbicide Mustang 306 SE + foliar fertilizer Insol 3; E – herbicide Mustang 306 SE + two foliar fertilizers: Insol 3 and FoliCare 18:18:18. The husked oat cv. Krezus was more competitive against weeds. Number of dicotyledonous weeds and of monocotyledonous weeds, total weeds, and air-dry weight of above-ground parts of weeds in the crop of this cultivar were all significantly lower compared to the naked cv. Cacko. From the group of dicotyledonous species, Chenopodium album, Galinsoga parviflora, Matricaria maritima ssp. inodora, Polygonum aviculare, and Stellaria media were the dominant species in the crops of the oat varieties under investigation, whereas among the monocotyledonous species Echinochloa crus-galli, Setaria pumila, Apera spica-venti, and Elymus repens occurred in greatest numbers. The application of the herbicide Mustang 306 SE decreased the number of dicotyledonous weeds and air-dry weight of weeds, compared to the treatment in which mechanical weed control had been used.
Źródło:
Acta Agrobotanica; 2010, 63, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A strategy of chemical control of Apera spica-venti L. resistant to sulfonylureas traced on the molecular level
Autorzy:
Stankiewicz-Kosyl, M.
Wrochna, M.
Salas, M.
Gawronski, S.W.
Powiązania:
https://bibliotekanauki.pl/articles/65897.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chemical control
control strategy
Apera spica-venti
silky bentgrass
silky bent grass zob.silky bentgrass
resistance
weed control
sulphonylurea
molecular level
Opis:
Three populations of silky bent grass (Apera spica-venti L.) were tested – one that is susceptible and two that are resistant to sulfonylureas. Th is study assessed the efficacy of control by different herbicides in a pot experiment and estimated the molecular status of resistance to sulfonylureas in analysed populations and its effect on the effi cacy of different chemical treatments. The three most effective herbicide rotation schemes were: 1) chlorsulfuron + isoproturon, ethametsulfuron + metazachlor + quinmerac, chlorsulfuron + isoproturon; 2) prosulfocarb + difl ufenican, ethametsulfuron + quizalofop-p-ethyl, prosulfocarb + diflufenican; 3) diflufenican + flufenacet, quizalofop-p-ethyl, diflufenican + flufenacet. In most cases it was more difficult to destroy 100% of the resistant population from Modgarby where the majority of plants had no mutation in the als gene. In the resistant population from Babin there were signifi cantly more individuals with mutation in the als gene, therefore exhibiting target-site resistance.
Źródło:
Journal of Plant Protection Research; 2017, 57, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Micro-rates of herbicides used in sugar beet crop - influence on herbicide residues level in roots and soil
Autorzy:
Kucharski, M.
Domaradzki, K.
Wujek, B.
Powiązania:
https://bibliotekanauki.pl/articles/55174.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
herbicide dose
herbicide residue
herbicide
residue monitoring
root
sugar-beet crop
residue level
soil
chemical control
micro-rate application
weed control
Opis:
The aim of present investigation was to evaluate the influence of lowrates application on herbicide residues in soil and roots of sugar beet. Chemical weed control in sugar beet was applied at recommended and reduced (about 50 and 66%) doses of herbicides including substances such as: phenmedipham, desmedipham, ethofumesate, metamitron, triflusulfuron and oil adjuvant applied 4 times at 7- to 10-day intervals starting at the onset of weed emergence. Samples of soil and roots of sugar beet were taken at the day of lifting. Phenmedipham, desmedipham and ethofumesate residues were analysed using HPLC with UV-detection. Metamitron residues were analysed using GLC with ECD detection. At lifting time, in soil samples, where recommended herbicide doses were applied, the residues of separate active substance of herbicides amounted from 0.0056 to 0.0124 mg.kg-1. Sum of all detected residues of applied substances amounted 0.0323-0.0373 mg.kg-1. In sugar beet root samples, the residues amounted respectively 0.0011 to 0.0085 mg.kg-1and 0.0085-0.0224 mg.kg-1. Application of the reduced doses by about 50% influenced on a significant decrease of residues about 38-50% average. For samples, where reduction of herbicide dose amounted 66%, the decrease of residues level, in comparison with results obtained at recommended doses, was statistically significant and amounted 69-77% average. Residues of active substances determined in roots of sugar beet did not exceed EU acceptable limits.
Źródło:
Pestycydy; 2008, 3-4; 63-69
0208-8703
Pojawia się w:
Pestycydy
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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