Barley (<i>Hordeum vulgare</i>) Response to Herbicides Applied at Three Growth Stages

Martin, Duane A.; Miller, Stephen D.; Alley, H. P.

doi:10.1017/s0890037x00030050

Cited by 4 publications

(2 citation statements)

References 2 publications

(2 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, fewer symptoms of chlorsulfuron injury to wheat were observed when chlorsulfuron application was delayed (1). In contrast, barley grain yield was reduced by application of chlorsulfuron at GS 13 and GS 45 but not at GS 30 (9).…”

Section: Introductionmentioning

confidence: 98%

Influence of Growth Stage on Spring Barley (Hordeum vulgare) Tolerance to Chlorsulfuron

Lemerle¹,

Cousens

1993

Weed sci.

View full text Add to dashboard Cite

Tolerance of barley to chlorsulfuron at various stages of crop development was studied in weed-free field and pot experiments. Five barley crops were sown between mid-May and mid-July in the field in 1988 and sprayed simultaneously with four rates of chlorsulfuron when the corresponding stages of crop development ranged from growth stage 7 (GS 7) to GS 31. Early-sown barley yielded more than late-sown barley, but percent grain yield reduction from chlorsulfuron was similar for all planting dates. In a field experiment in 1989, barley was sown at three dates (May, June, and July) and each was treated with chlorsulfuron at 0, 15, 30, and 60 g ai ha−1 at either GS 12 or GS 15. Grain yield of barley sown in May and treated with 15 g ha−1 chlorsulfuron at GS 12 was reduced 35%, compared with no effect when applied at GS 15; this yield reduction was related to spike size and number. Application of chlorsulfuron at GS 12 and GS 15 to barley sown in June caused yield reductions of 20 and 11%, respectively. In contrast, barley sown in mid-July was not affected by chlorsulfuron. Applications of chlorsulfuron at GS 12,13,14, and 15 led to reductions of 75,35,15, and 5% shoot dry matter (DM) of plants grown in pots and measured at GS 33. Root DM was more sensitive to chlorsulfuron than shoot DM. Tolerance of barley to chlorsulfuron increased with age of the plant at the time of application.

show abstract

Section: Introductionmentioning

confidence: 98%

Influence of Growth Stage on Spring Barley (Hordeum vulgare) Tolerance to Chlorsulfuron

Lemerle¹,

Cousens

1993

Weed sci.

View full text Add to dashboard Cite

show abstract

“…A decrease in grain yield and height, an increase in the number of tillers, lodging and protein content and a delay in heading were also reported as herbicide effects in oat (Reeves 1988). In wheat and barley, Friesen et al (1964) and Martin et al (1988) reported that dicamba (140 g a.i. ha…”

mentioning

confidence: 99%

Naked oat response to soil type and herbicides applied at two growing stages

Lanoie¹,

Vanasse²,

Collin³

et al. 2010

Can. J. Plant Sci.

View full text Add to dashboard Cite

. 2010. Naked oat response to soil type and herbicides applied at two growing stages. Can. J. Plant Sci. 90: 247Á255. Naked oat (Avena sativa L.) harvested in the province of Quebec, Canada, develops on average 10% covered grains and sometimes more. The objective of this study was to determine the effect of soil type, herbicides and their application stages on the proportion of covered grains in naked oat genotypes. Three genotypes were evaluated over 2 yr at two experimental sites. At each site, trials were seeded on two different soil types and each entry was treated with one of three types of herbicides: bromoxynil/MCPA, dicamba/MCPA and thifensulfuron methyl/tribenuron methyl, and compared with a weed-free check. The herbicides were applied at Zadoks 12-13 and 22-23. Results showed that dicamba/MCPA herbicide, applied at Zadoks 12-13, increased covered grains compared with the weed-free check and more covered grains were produced with the application made at Zadoks 22-23. However, differences in genotype reactions were observed. Few differences were found among the other weed control treatments. The application of dicamba/MCPA at Zadoks 22-23 decreased yield and test weight, but increased kernel weight. The other weed control treatments had no effect on agronomic characteristics.

show abstract