scholarly journals Intelligent thermal image-based sensor for affordable measurement of crop canopy temperature

2021 ◽  
Vol 188 ◽  
pp. 106319
Author(s):  
Jaime Giménez-Gallego ◽  
Juan D. González-Teruel ◽  
Fulgencio Soto-Valles ◽  
Manuel Jiménez-Buendía ◽  
Honorio Navarro-Hellín ◽  
...  
Keyword(s):  
Canopy Temperature ◽  
Thermal Image ◽  
Crop Canopy

<i>Analysis on diurnal variation of crop canopy temperature in solar greenhouse</i>

2020 ◽  
Author(s):  
Junhua Zhang ◽  
Kaichen Shen ◽  
Danyan Chen ◽  
Pan Gao ◽  
Jin Hu ◽  
...  
Keyword(s):  
Diurnal Variation ◽  
Canopy Temperature ◽  
Crop Canopy ◽  
Solar Greenhouse

Estimation of evapotranspiration using the crop canopy temperature at field to regional scales in large irrigation district

2019 ◽  
Vol 269-270 ◽  
pp. 305-322 ◽  
Author(s):  
Lingxu Huang ◽  
Jiabing Cai ◽  
Baozhong Zhang ◽  
He Chen ◽  
Liangliang Bai ◽  
...  
Keyword(s):  
Canopy Temperature ◽  
Irrigation District ◽  
Crop Canopy ◽  
Large Irrigation

scholarly journals Sudden changes in crop environment, as influenced by total solar eclipse

MAUSAM ◽  
2021 ◽  
Vol 49 (4) ◽  
pp. 511-520
Author(s):  
A. KASHYAPI ◽  
S. K. SHAHA ◽  
P. M. GULHANE
Keyword(s):  
Soil Temperature ◽  
Canopy Temperature ◽  
Total Solar Eclipse ◽  
The Other ◽  
Crop Canopy ◽  
Soil Temperature Gradient ◽  
Sunshine Hours ◽  
Crop Environment ◽  
Daily Total ◽  
Agricultural Meteorology

The Division of Agricultural Meteorology, at Pune of IMD conducted an experiment at Principal Evapotranspiration Observatory, Canning, W.B., during October, 1995 to study the sudden changes in crop environment. The present study revealed that both the crop canopy temperature and observatory temperature at different heights recorded sharp fall of around 2.0°C at 0900 hr (IST) on the eclipse day. The relative humidity (% ) increased sharply at 0900 hr (IST) on the eclipse day within crop canopy as well as within observatory. The soil temperature dropped suddenly at 10 and 20 cm depths of the subsoil and delayed reversal of the soil temperature gradient occurred on the eclipse day; the grass minimum temperature was 21.2°C. Bright sunshine hours reduced by 0.8 on 'the eclipse day as compared to the preceding and succeeding days. The wind during the eclipse period was almost calm between 0900 -0930 hr (IST). The daily total ET recorded on the eclipse day was the minimum. The rate of evapotranspiration was less than half as compared to the other days, as recorded at 0830 hr (IST) (0.2 mm) on the eclipse day, which was closely followed by that observed at 1130 hr (IST) (0.3 mm).

scholarly journals Global warming is reducing the tillering capacity and grain yield of wheat in Yaqui Valley, Mexico

2019 ◽  
Vol 37 (1) ◽  
pp. 90-96
Author(s):  
Denisse Morales-Coronado ◽  
Leandris Argentel-Martínez ◽  
Luciano Castro-Espinoza ◽  
Marco Gutiérrez-Coronado ◽  
Juan Garibaldi-Chávez ◽  
...  
Keyword(s):  
Global Warming ◽  
Grain Yield ◽  
Wheat Variety ◽  
Canopy Temperature ◽  
Effect Of Temperature ◽  
Crop Canopy ◽  
Temperature Variations ◽  
Yaqui Valley ◽  
Previous Cycle ◽  
Aba Content

The effect of temperature variations recorded in eight meteorological stations in Yaqui Valley, Sonora, Mexico, on the tillering capacity and grain yield of wheat variety CIRNO C2008 in the growing cycles December 2016-May 2017 and December 2017-May 2018 was studied. In one of the sites, the crop canopy temperature was increased by +2°C with a T-FACE system (warming) based on the temperature recorded in the nearest meteorological station. With the two experimental variants, the abscisic (ABA) and gibberellic (GA) acid hormones were determined during tillering (initial tillering: 30 d after emergence and final tillering: 45 d after emergence) to explain their contribution to the tillering capacity response. A temperature variability of 1°C was observed in the cycle December 2017- May 2018, as compared to the previous cycle and between the evaluated sites. As a result of the temperature increase effect, the tiller number was significantly reduced. The experimental warming caused a highly significant decrease in the ABA content and an increase in the GA. The temperature variation found in Yaqui Valley had a negative and significant correlation with the grain yield in both experiment crop cycles, which demonstrated that global warming is reducing the tillering capacity and grain yield of wheat in Yaqui Valley.

scholarly journals Impact of camera focal length and sUAS flying altitude on spatial crop canopy temperature evaluation

2020 ◽  
Vol 172 ◽  
pp. 105344 ◽  
Author(s):  
H.S. Sangha ◽  
A. Sharda ◽  
L. Koch ◽  
P. Prabhakar ◽  
G. Wang
Keyword(s):  
Focal Length ◽  
Canopy Temperature ◽  
Crop Canopy

Tomato yield-evapotranspiration relationships, seasonal canopy temperature and stomatal conductance as affected by irrigation

1993 ◽  
Vol 73 (1) ◽  
pp. 257-264 ◽  
Author(s):  
C. S. Tan
Keyword(s):  
Water Stress ◽  
Stomatal Conductance ◽  
Lycopersicon Esculentum ◽  
Sandy Loam ◽  
Canopy Temperature ◽  
Crop Canopy ◽  
Applied Water ◽  
Tomato Yield ◽  
Humid Region ◽  
Different Levels

The effects of irrigation on evapotranspiration (ET), yield, crop canopy temperature and stomatal conductance of tomatoes (Lycopersicon esculentum Mill.) were investigated in Fox sandy loam in the sub-humid region of southwestern Ontario between 1979 and 1982. Optimum yields were obtained with 300–400 mm of total applied water (rainfall plus irrigation). There appeared to be a distinct threshold seasonal ET value of 88 mm, below which yield was negligible and above which yield rose linearly with the seasonal ET rate. The values of crop canopy temperature and leaf stomatal conductance were not significantly different among different levels of irrigation. Leaf stomatal conductance was significantly lower for non-irrigated tomatoes in a dry year indicating that they were subjected to the greater degree of water stress. Key words: Lycopersicon esculentum, irrigation, water stress

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