Damage of Wheat and Barley in 1998 Harvest Year by Unusual Weather in Kyushu and Yamaguchi districts.

Yamamoto, Haruhiko; Iwaya, Kiyoshi; Suzuki, Kenji; Hirashima, Takayoshi; Hamano, Takashi

doi:10.1626/jcs.68.310

Cited by 7 publications

(3 citation statements)

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“…Some of the flag leaves at the Beltsville site in 2009 showed symptoms of BYDV and/or FHB diseases. The occurrence of FHB was previously reported to be highly associated with periods of high precipitation (Yamamoto et al 1999;Matsue et al 2000;Xu et al 2008), which defines weather conditions at Beltsville in 2009 (Table 1). Neither fungicides examined during the study are reported to effectively control these two aforementioned diseases (Dively et al 2013a).…”

Section: Foliar Damagementioning

confidence: 92%

Evaluation of prophylactic sprays on pest abundance, foliar damage and yield in winter wheat

Chen

Hinds

Zobel

et al. 2015

International Journal of Pest Management

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Producers in the Mid-Atlantic region of the United States often use prophylactic pesticide sprays in their fields to increase wheat (Triticum aestivum L.) yields regardless of disease or insect pest levels. This study was carried out at two sites during each of two field seasons to evaluate th-e effects of pesticide applications (fungicides and insecticide) on insect abundance, beneficial arthropods, foliar damage and grain yield in winter wheat. Insecticide applications reduced densities of cereal leaf beetle (CLB) and CLB damage of flag leaves at the Queenstown and aphid at the Upper Marlboro study site compared to controls during 2009 and 2011 field seasons, respectively. However, insecticide application also reduced arthropod predators at Queenstown in 2009. Fungicide applications reduced leaf spot severity symptoms at Queenstown in 2009 and both sites in 2011. Grain yield was negatively correlated with the percentage of severely damaged flag leaves during the 2009 growing season when diseases and insects pressure was greatest. Nevertheless, yield increase associated with application of pesticides (fungicides) was observed only at one out of four siteÀyear combinations. Results from this study suggest that prophylactic sprays will not enhance wheat yields in the absence of high pest pressure.

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Section: Foliar Damagementioning

confidence: 92%

Evaluation of prophylactic sprays on pest abundance, foliar damage and yield in winter wheat

Chen

Hinds

Zobel

et al. 2015

International Journal of Pest Management

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“…However, if it rains heavily after sowing, their fields are flooded and their seeds rot. Such flooding damage causes the decreases in seedling establishment (Oyanagi, 2008;Yamamoto et al, 1999). This decrease causes the decrease in the yield (Inamura et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Improvement of seedling establishment under flood condition by seed coating with molybdenum compounds for wheat and barley

Hara

2016

Plant Production Science

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Wheat and barley are often cultivated also in paddy fields in winter in Japan. The drainage of paddy fields is often poor. The seedling establishment of wheat and barley is more prone to become poor if it rains heavily after sowing. The flooding damage on seedling establishment is thought to be caused by many factors. The generation of sulfide ions in flooded and reduced soil is thought to be one factor of the flooding damage. In this study, the effect of seed coating with molybdenum compounds, which suppress the generation of sulfide ions, on the flooding damage of wheat and barley seedling establishment. Two poorly soluble molybdenum compounds were coated on wheat or barley seeds at different amounts. Coated seeds were sown in soil and soon flooded for 2 d at 20 °C. When seeds were not coated with molybdenum compounds, rates of seedling establishment were no more than 32%. However, when any molybdenum compounds of .05-.5 mol-Mo kg −1 were coated, seedling establishment was significantly improved and rates of seedling establishment were no less than 54%. However, when sown seed were not flooded, the establishment rates of the seeds, which were coated with a molybdenum compound of no less than .1 or .2 mol-Mo kg-1, were significantly decreased. Accordingly, coating of molybdenum compounds could improve the seedling establishment of coated seeds under flooded condition, but might impair the seedling establishment of coated seeds under unflooded condition.

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“…If we have much rain, the sowing time is delayed considerably. A long rain in November 1997 caused poor emergence of wheat in Yamaguchi (Yamamoto et al, 1999). In the worst case, wheat cultivation is impossible in such a season.…”

mentioning

confidence: 99%

Investigation of Yielding Ability of Wheat Cultivars for Early-Sowing Cultivation in Yamaguchi

Zhang

Takahashi

Shibata

et al. 2006

Plant Production Science

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Damage of Wheat and Barley in 1998 Harvest Year by Unusual Weather in Kyushu and Yamaguchi districts.

Cited by 7 publications

References 0 publications

Evaluation of prophylactic sprays on pest abundance, foliar damage and yield in winter wheat

Evaluation of prophylactic sprays on pest abundance, foliar damage and yield in winter wheat

Improvement of seedling establishment under flood condition by seed coating with molybdenum compounds for wheat and barley

Investigation of Yielding Ability of Wheat Cultivars for Early-Sowing Cultivation in Yamaguchi

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