Different effects of water-saving management on canopy microclimate, spikelet sterility, and rice yield in the dry and wet seasons of the sub-humid tropics in northern Ghana

Tsujimoto, Yasuhiro; Fuseini, Abraham; Inusah, Baba I. Y.; Dogbe, Wilson; Yoshimoto, Mayumi; Fukuoka, Minehiko

doi:10.1016/j.fcr.2020.107978

Cited by 7 publications

(3 citation statements)

References 44 publications

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“…An area for installing MINCER was provided near the center of the plot to monitor the air temperature and relative humidity inside the canopy. In addition, the drainage treatment plots were also set up at the same time to investigate the effects of drought stress in Ghana, Sri Lanka, Myanmar, the Philippines, Taiwan and the USA sites (Tsujimoto et al, 2021 for Ghana). At these sites, the data of the flooded plots as the control plots were analyzed in this study.…”

Section: Methodsmentioning

confidence: 99%

Canopy micrometeorology monitoring in diverse climates innovatively improves the evaluation heat-induced sterility of rice under climate change

Yoshimoto

Fukuoka

Tsujimoto

et al. 2020

Preprint

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This study is the first and unique of open-field studies to assess the determination process of heat-induced spikelet sterility (HISS) of rice by using the same variety and the same monitoring system, MINCER (Micrometeorological Instrument for Near Canopy Environment of Rice), covering the major-rice growing regions from Sub-Saharan Africa, South, Southeast, and East Asia, and USA. Applying the observation data from the monitoring network, MINCERnet, to the canopy heat balance model, IM2PACT, it was quantitatively corroborated in open-field conditions worldwide that the canopy and panicle transpiration and their evaporative cooling effect played a great role on the micrometeorological gap between the ambient air temperature and the panicle temperature, and that the sterility rate due to HISS in open-fields can be evaluated accurately in diverse climates by the mean panicle temperature at flowering hours in the flowering period. The heat balance structure suggested that the risk of HISS should be higher in high humidity climates rather than in dry climates also in the future, which lead to the importance of the humidity accuracy as well as of the air temperature in climate scenarios and their spatial downscaling for future prediction of rice heat stress and production. Applying the heat-tolerant variety was suggested to be able to keep the sterility due to HISS low in all climates. It is needed of the approach using the panicle temperature as indicator of HISS by intervening sub-model and/or monitoring of micrometeorology inside the canopy to reduce uncertainties in future rice yield prediction under various adaptation measures.

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Section: Methodsmentioning

confidence: 99%

Canopy micrometeorology monitoring in diverse climates innovatively improves the evaluation heat-induced sterility of rice under climate change

Yoshimoto

Fukuoka

Tsujimoto

et al. 2020

Preprint

Self Cite

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“…Studies using microclimatic temperature as an environmental variable for predicting pest development have been restricted to dry-field crops and associated pests. In paddy rice, the air temperature inside the canopy is susceptible to flooding, drained conditions, and water temperature ( Miyasaka et al 2011 , Tsujimoto et al 2021 , Sun et al 2022 , Maruyama et al 2023 ). Consequently, the temperature difference between inside and outside the canopy may be more pronounced in paddy fields than in dry-field crops.…”

Section: Introductionmentioning

confidence: 99%

Effect of microclimatic temperatures on the development period of 3 rice planthopper species (Hemiptera: Delphacidae): a phenology model based on field observations

Mochizuki,

Yashiro,

Sanada-Morimura

et al. 2024

Environmental Entomology

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Most pest phenology models are temperature dependent. Generally, the air temperature at reference height is used to predict pest development, but the air temperature varies between inside and outside the crop canopy, where pests reside. Here, we sampled 3 rice planthopper species—Nilaparvata lugens (Stål), Sogatella furcifera (Horváth), and Laodelphax striatellus (Fallén)—and micrometeorological observations in paddy fields to analyze how thermal environments inside the canopy affect pest development. Seasonal variations in the population density of these species were surveyed in 3 experimental fields with 2 water temperature plots (normal and low-water temperature plots). The development periods of the 3 species were predicted individually based on pest phenology models using temperatures recorded at 6 heights (0.0–2.0 m). We calculated the root mean square error (RMSE) values from the predicted and observed development periods for each rice planthopper. The development prediction using the temperature inside the canopy was more accurate than that utilizing the temperature at the reference height (2.0 m). In the low-water temperature plot, the RMSE value for N. lugens, S. furcifera, and L. striatellus was 6.4, 5.6, and 4.1 when using the temperature at the reference height (2.0 m), respectively, and 2.8, 3.8, and 2.9 when employing the temperature inside the canopy at 0.25 m, respectively. The development prediction utilizing the air temperature at the bottom (0.25 m) of canopy, where N. lugens resides, was most effective for N. lugens among the 3 species. These findings suggest the importance of utilizing microhabitat-based temperatures to predict pest development.

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“…First, the energy transfer between plants and the surrounding environment is carried out through conduction, radiation, convection and latent heat evapotranspiration. For example, factors such as water in the environment [4,5], atmospheric temperature and nitrogen fertilizer [6] affect canopy temperature [7][8][9]. Second, heat transfer within tissues, such as leaf temperature, affects enzyme activity and leaf metabolism [10].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Organ Temperature on Total Yield of Transplanted and Direct-Seeded Rice (Oryza sativa L.)

Li,

Huang,

Huo

et al. 2023

Phyton

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The canopy temperature of rice is an important index that directly reflects the growth and physiological state of rice, and affects the yield of rice plants to a great extent. The correlation between the temperatures of different rice organs and canopy in different growth stages and the grain yield is complex. The stability and universality of these correlations must be verified. We conducted a pot experiment using two rice varieties and two temperature treatments (high temperature treatment was carried out at the beginning of heading stage for 10 days). We measured rice organ temperature during seven stages of growth using a high-precision infrared thermal imager. Results showed that the optimal observation period for the rice canopy temperature was 13:00. Although the rice variety did not significantly impact the canopy or organ temperature (p > 0.05), the different organs and canopy exhibited significantly different temperatures (p < 0.05). The correlations between the leaf, stem, panicle, canopy-air temperature differences and seed setting rate, theoretical and actual yields were the strongest during the milk stage. Among them, the correlation coefficient between ΔT s and theoretical and actual yields was the highest, the relationship between theoretical yield (Y) and ΔT s (X) was Y = −5.6965X + 27.778, R 2 = 0.9155. Compared with ΔT l , ΔT p and ΔT c , ΔT s was closely related to the main traits of plants. ΔT s could better reflect the growth characteristics of rice than ΔT c , such as dry matter accumulation (r = −0.931), SPAD (r = 0.699), N concentration (r = 0.714), transpiration rate (r = −0.722). In conclusion, stem temperature was more important indicator than canopy temperature. Stem temperature is a better screening index for rice breeding and cultivation management in the future. KEYWORDSPlanting method; canopy temperature; organ temperature; grain yield Nomenclature DT l Leaf-air temperature differences DT s Stem-air temperature differences DT p Panicle-air temperature differences DT c Canopy-air temperature differences This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Different effects of water-saving management on canopy microclimate, spikelet sterility, and rice yield in the dry and wet seasons of the sub-humid tropics in northern Ghana

Cited by 7 publications

References 44 publications

Canopy micrometeorology monitoring in diverse climates innovatively improves the evaluation heat-induced sterility of rice under climate change

Canopy micrometeorology monitoring in diverse climates innovatively improves the evaluation heat-induced sterility of rice under climate change

Effect of microclimatic temperatures on the development period of 3 rice planthopper species (Hemiptera: Delphacidae): a phenology model based on field observations

The Effect of Organ Temperature on Total Yield of Transplanted and Direct-Seeded Rice (Oryza sativa L.)

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