Abstract
The field experiments with spring barley cultivar Justina were conducted in 2010–2011. The tested products (Regalis 10 WG, Modus 250 EC, Antywylegacz Płynny 675 SL, Cerone 480 SL) were applied on spring barley at the stage of BBCH 32. The height reduction of spring barley was dependent on the active substance of growth regulators and weather conditions, and it was 0–5.9% (2010) and 1.6–9.8% (2011), respectively. Higher effectiveness of shortening stems of spring barley was obtained after the use of Cerone 480 SL at the dose of 0.75 l/ha. In two years of investigation lack of statistic differences between growth retardants prohexadione-Ca, chloromequat chloride and ethephone regardless of pH spray liquid. Lower pH of spray liquid containing trinexapak ethyl showed better efficacy (shorter stems and lower lodging) in comparison to plots on which trinexapak ethyl on neutral pH was used. The examined growth regulators did not cause any injury to spring barley cultivar Justina. Acidity of spray liquid containing growth regulators increased the yield of spring barley in comparison to untreated plots and plots on which growth regulators were used in neutral pH. Doświadczenia polowe prowadzono w latach 2010–2011, w uprawie jęczmienia jarego odmiany Justina. Badane retardanty wzrostu (Regalis 10 WG, Modus 250 EC, Antywylegacz Płynny 675 SL, Cerone 480 SL) zastosowano w fazie strzelania w źdźbło jęczmienia jarego (BBCH 32). Efektywność działania badanych preparatów uzależniona była od substancji czynnej oraz od warunków atmosferycznych i wynosiła, w zależności od roku badań, od 0–5,9% (2010) do 1,6–9,8% (2011) skrócenia źdźbeł. W obydwu latach badań największe skrócenie długości źdźbeł w porównaniu do kontroli uzyskano po zastosowaniu retardanta Cerone 480 SL w dawce 0,75 l/ha. W dwuletnich badaniach nie stwierdzono istotnych różnic pomiędzy wariantami badań, w których stosowano następujące retardanty wzrostu: proheksadion wapnia, chlorek chloromekwatu oraz etefon niezależnie od pH cieczy opryskowej. W wyniku obniżenia pH cieczy opryskowej zawierającej trineksapak etylu stwierdzono lepsze działanie retardacyjne trineksapaku etylu (redukcja wysokości roślin, obniżenie wylegania) w porównaniu do wariantu badań, w którym stosowano preparat o odczynie roztworu zbliżonym do obojętnego. Badane preparaty nie wykazywały fitotoksycznego wpływu na rośliny jęczmienia jarego odmiany Justina. Obniżenie pH cieczy opryskowej zawierającej retardanty wzrostu przyczyniło się do wzrostu plonowania jęczmienia jarego w porównaniu do plonowania jęczmienia na obiektach bez zabiegu oraz do poletek, na których nie stosowano obniżenia pH cieczy opryskowej.
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Claims 7
Claim · model-written summary
Growth regulator effects on barley height varied with active substance and weather, with reduction ranges of 0–5.9% in 2010 and 1.6–9.8% in 2011.
- Taxon
- spring barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- growth regulatorse0
- Outcome
- height reductione0
- Direction
- reductione0
- Value
- 0–5.9% (2010) and 1.6–9.8% (2011)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The height reduction of spring barley was dependent on the active substance of growth regulators and weather conditions, and it was 0–5.9% (2010) and 1.6–9.8% (2011), respectively”
Claim · model-written summary
Cerone 480 SL at 0.75 l/ha was most effective at shortening barley stems.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- Cerone 480 SL at the dose of 0.75 l/hae0
- Outcome
- shortening stemse0
- Direction
- Highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher effectiveness of shortening stems of spring barley was obtained after the use of Cerone 480 SL at the dose of 0.75 l/ha”
Claim · model-written summary
Prohexadione-Ca, chloromequat chloride and ethephone did not differ statistically regardless of spray pH.
- Taxon
- spring barleyHordeum vulgaret0
- Treatment
- prohexadione-Ca, chloromequat chloride and ethephonee0
- Outcome
- lack of statistic differencese0
- Qualifier
- regardless of pH spray liquide0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In two years of investigation lack of statistic differences between growth retardants prohexadione-Ca, chloromequat chloride and ethephone regardless of pH spray liquid”
t0“spring barley”
Claim · model-written summary
Lower spray pH with trinexapak ethyl shortened barley stems compared with neutral pH.
- Taxon
- spring barleyHordeum vulgaret0
- Treatment
- Lower pH of spray liquid containing trinexapak ethyle0
- Outcome
- stemse0
- Direction
- shortere0
- Comparator
- trinexapak ethyl on neutral pHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower pH of spray liquid containing trinexapak ethyl showed better efficacy (shorter stems and lower lodging) in comparison to plots on which trinexapak ethyl on neutral pH was used”
t0“spring barley”
Claim · model-written summary
Lower spray pH with trinexapak ethyl reduced barley lodging compared with neutral pH.
- Taxon
- spring barleyHordeum vulgaret0
- Treatment
- Lower pH of spray liquid containing trinexapak ethyle0
- Outcome
- lodginge0
- Direction
- lowere0
- Comparator
- trinexapak ethyl on neutral pHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower pH of spray liquid containing trinexapak ethyl showed better efficacy (shorter stems and lower lodging) in comparison to plots on which trinexapak ethyl on neutral pH was used”
t0“spring barley”
Claim · model-written summary
The tested growth regulators caused no injury to spring barley cultivar Justina.
- Taxon
- spring barleyHordeum vulgaree0
- Material
- Justinae0
- Treatment
- growth regulatorse0
- Outcome
- injurye0
- Direction
- did not cause anye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The examined growth regulators did not cause any injury to spring barley cultivar Justina”
Claim · model-written summary
Acidified growth-regulator spray increased spring barley yield relative to untreated and neutral-pH spray plots.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- Acidity of spray liquid containing growth regulatorse0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- untreated plots and plots on which growth regulators were used in neutral pHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acidity of spray liquid containing growth regulators increased the yield of spring barley in comparison to untreated plots and plots on which growth regulators were used in neutral pH”
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