Influences of Nitrogen Nutrient and Solar Radiation in the Canopy on Leugth of Lower Internodes of Rice.

Kamiji, Yoshiaki; Hayashi, Shigekazu; Horie, Takeshi

doi:10.1626/jcs.62.164

Cited by 11 publications

(4 citation statements)

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“…We inferred that the positive effect of the increased R mean on the lodging resistance outweighed the negative effect of the increased T mean because of the larger differences ( R mean = 2.1 MJ m −2 d −1 ) in the R mean than the differences ( T mean = 0.8 • C) in the T mean between 2017 and 2018 at Ezhou (Figure 2). Several researchers found that low solar radiation could promote the vertical elongation of plants, such as an increase in the internode length and plant height, and restrain the lateral growth, such as a decrease in the culm diameter and wall thickness, and reduce cell wall carbohydrates; thus, low solar radiation could cause crop lodging [82][83][84][85][86][87]. Our results were similar to the previous findings, i.e., the R mean was positively correlated with the lodging resistance.…”

Section: Discussionsupporting

confidence: 89%

Responses of the Lodging Resistance of Indica Rice Cultivars to Temperature and Solar Radiation under Field Conditions

Luo

et al. 2022

Agronomy

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Much attention has shifted to the effects of temperature and solar radiation on rice production and grain quality due to global climate change. Meanwhile, lodging is a major cause of rice yield and quality losses. However, responses of the lodging resistance of rice to temperature and solar radiation are still unclear. To decipher the mechanisms through which the lodging resistance might be affected by temperature and solar radiation, 32 rice cultivars with different lodging resistance were grown at two eco-sites on three sowing dates over a period of three years. Based on the field observation, 12 indica rice cultivars which did not lodge were selected for analysis. Significant differences were found in the lodging resistance of the indica rice cultivars at different temperature and solar radiation treatments. The results showed that temperature was the main factor that affected the lodging resistance of indica rice cultivars under the conditions of this study. With the increased average daily temperature, the lodging resistance decreased rapidly, primarily due to the significant reduction in physical strength of the culm, which was attributed to the longer and thinner basal second internode. Among the 12 indica rice cultivars, the lodging-moderate cultivar Chuanxiang 29B was most sensitive to temperature, and the lodging-resistant cultivar Jiangan was least responsive to temperature. These results suggested that rice breeders could set the shorter and thicker basal internode as the main selection criteria to cultivate lodging-resistant indica cultivars to ensure a high yield at a higher ambient temperature.

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Section: Discussionsupporting

confidence: 89%

Responses of the Lodging Resistance of Indica Rice Cultivars to Temperature and Solar Radiation under Field Conditions

Luo

et al. 2022

Agronomy

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“…The negative correlation between CH 4 flux and grain yield has been found by many studies in rice paddy soils [34] – [36] . High level of nitrogen input often caused excessive vegetative growth at the expense of grain yield, thereby reducing grain yield [37] , and then might be attributed to comparatively lower yield in 40 Mg manure ha −1 treated soils as compared to 20 Mg ha −1 .…”

Section: Discussionmentioning

confidence: 99%

Cattle Manure Enhances Methanogens Diversity and Methane Emissions Compared to Swine Manure under Rice Paddy

et al. 2014

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Livestock manures are broadly used in agriculture to improve soil quality. However, manure application can increase the availability of organic carbon, thereby facilitating methane (CH4) production. Cattle and swine manures are expected to have different CH4 emission characteristics in rice paddy soil due to the inherent differences in composition as a result of contrasting diets and digestive physiology between the two livestock types. To compare the effect of ruminant and non-ruminant animal manure applications on CH4 emissions and methanogenic archaeal diversity during rice cultivation (June to September, 2009), fresh cattle and swine manures were applied into experimental pots at 0, 20 and 40 Mg fresh weight (FW) ha−1 in a greenhouse. Applications of manures significantly enhanced total CH4 emissions as compared to chemical fertilization, with cattle manure leading to higher emissions than swine manure. Total organic C contents in cattle (466 g kg−1) and swine (460 g kg−1) manures were of comparable results. Soil organic C (SOC) contents were also similar between the two manure treatments, but dissolved organic C (DOC) was significantly higher in cattle than swine manure. The mcrA gene copy numbers were significantly higher in cattle than swine manure. Diverse groups of methanogens which belong to Methanomicrobiaceae were detected only in cattle-manured but not in swine-manured soil. Methanogens were transferred from cattle manure to rice paddy soils through fresh excrement. In conclusion, cattle manure application can significantly increase CH4 emissions in rice paddy soil during cultivation, and its pretreatment to suppress methanogenic activity without decreasing rice productivity should be considered.

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“…The high tillering potential of young seedlings, together with high nitrogen input, often caused excessive vegetative growth along with more nonproductive tillers, reduced culm diameters of the remaining productive tillers (Kamiji et al, 1993), and increased lodging (Hashikawa, 1996). The new recommendations were to plant seedlings at wide spacing or with fewer plants per hill with reduced basal fertilization (Hashikawa, 1985), and experienced farmers now follow such practices.…”

Section: (B) Wide Space Planting With Single Seedling Per Hillmentioning

confidence: 99%

Can Yields of Lowland Rice Resume the Increases that They Showed in the 1980s?

Horie¹,

Shiraiwa²,

Homma³

et al. 2005

Plant Production Science

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168

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Influences of Nitrogen Nutrient and Solar Radiation in the Canopy on Leugth of Lower Internodes of Rice.

Cited by 11 publications

References 0 publications

Responses of the Lodging Resistance of Indica Rice Cultivars to Temperature and Solar Radiation under Field Conditions

Responses of the Lodging Resistance of Indica Rice Cultivars to Temperature and Solar Radiation under Field Conditions

Cattle Manure Enhances Methanogens Diversity and Methane Emissions Compared to Swine Manure under Rice Paddy

Can Yields of Lowland Rice Resume the Increases that They Showed in the 1980s?

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