Potential evapotranspiration

Ebook "Evapotranspiration in the soil-plant-atmosphere system" is presenting and quantifying it as a catenary process, describing transport of water in the soil, including root extraction patterns and methods of its evaluation. Transport of water through the plant and from the canopy to the atmosphere is also described and quantified.

262p nhanphanguyet 28-01-2024 4 2   Download

This study has implemented an index-based approach for monitoring the droughts in the Vu Gia – Thu Bon river basin using remote sensing data and the Google Earth Engine cloud computing service. Landsat series remotely sensed data had been used effectively for the time-series calculation of the indices related to the drought hazard

16p vinebula 02-06-2023 4 3   Download

This work aimed to study the effect of three green-house covers (polyethylene sheet, white and black net) and three irrigation levels [80%, 100% and 120% of the potential evapotranspiration estimated according to class A pan equation (ETo)], applied by drip irrigation system, on plant growth and crop yield of Cucumber (Cucumis sativus L. cv. Reda F1).

7p schindler 30-12-2021 8 0   Download

The present study aimed to determine irrigation depth and interval based on soil water potential fluctuation monitoring for Brinjal. Field experiment was conducted at Agricultural Engineering College and Research Institute, Kumulur, Tamil Nadu during the two crop growing seasons from 13 November 2018 to 22 March 2019 and 13 April 2019 to 20 August 2019. Brinjal F1 hybrid Dhruva was transplanted at the row spacing of 90 cm and plant spacing was 45 cm.

11p trinhthamhodang1215 23-09-2020 18 2   Download

Climate change and agriculture are interrelated processes, both of which take place on a global scale. The study was undertaken to identify the trend in weather parameters in Malaprabha Command Area (MCA). The research was based on secondary data of nineteen years (1999 to 2017) on different weather parameters such as precipitation, temperature, relative humidity and potential evapotranspiration obtained from the Irrigation Water Management Research Centre, Belavatgi under UAS, Dharwad.

9p quenchua6 15-06-2020 12 1   Download

The study was conducted in Shipra river basin to determine actual evapotranspiration in the area. Long term daily meteorological data including rainfall, maximum temperature, minimum temperature, relative humidity, wind speed and sunshine hours of Indore IMD station was used as input data in CROPWAT Model 8.0. The potential evapotranspiration was converted into actual evapotranspiration by using the crop coefficient. Reference evapotranspiration is a measure of evaporative demand, while the crop coefficient accounts for crop characteristics and management practices (e.g.

12p angicungduoc4 26-04-2020 13 0   Download

Jharkhand agricultural system is mainly dependent upon the weather conditions and the monsoon rainfall during the Kharif season. The state agricultural system is lagging behind because of low productivity, monocropping, erratic rainfall, and frequent dry spells. In addition to that, there is also a change in the weather pattern which will have a more significant negative impact on production and productivity of crops in the state, if the farming community continues with their indigenous practices.

10p chauchaungayxua4 18-03-2020 9 0   Download

Drought is one of the natural disasters of tremendous significance owing to intensity, duration, magnitude, financial damage and long-term impacts in comparison with other disasters. The evaluation of drought is aimed at identifying the onset, continuity and severity of drought. Reliable surveillance of drought and early warning are essential in preparing for drought, planning and mitigating future effects, particularly early warnings of famine.

10p cothumenhmong3 22-02-2020 25 0   Download

Improving agricultural water productivity, under rainfed or irrigated conditions, holds significant scope for addressing climate change vulnerability. It also offers adaptation capacity needs as well as water and food security in the southern African region. In this study, evidence for climate change impacts and adaptation s trategies in rainfed agricultural systems is explored through modeling predictions of crop yield, soil moisture and excess water for potential harvesting.

17p mentospurefresh 29-11-2019 48 2   Download

In this study, 1 full irrigation regime (100% of crop evapotranspiration, I100) and 2 deficit irrigation regimes (70%, I70, and 50%, I50) were evaluated in a Rio Red grapefruit (Citrus paradisi Macfad. ‘Rio Red’) orchard in Adana, Turkey.

8p vimb123 11-01-2019 19 1   Download

The approach requires data on the land cover and related-vegetation parameters based on AVHRR and LDAS information, which are available in recent years. The Nong Son basin, a sub-catchment of the Vu Gia-Thu Bon basin in the Central Vietnam, is selected for this study.

13p thienthanquydu 21-10-2018 29 2   Download

Onewaytogetaroundthissituation istounderstandthewateruseofcropduringgrowth,as this period demands maximum input. With this information, the contribution/influence of energycropsonwaterresourcescanbeunderstood.Waterrequirementsofaplantspeciescan becalculatedbyestimatingtheminimumamountofwaterperhectareyield(orwater limited
yield),whichisbasedonthepotentialyieldofthecropspeciesandtheavailabilityofwater. Wateruseofplants(evapotranspiration) isdependentontheplantspecies.

20p loixinloi 08-05-2013 58 4   Download

Evapotranspiration - An Overview contains recent advances in the physics of evaporation and transpiration from a typical experimental site to large scale areas. It incorporates many years of authors experience with the latest research on the methods and the models used worldwide, engaging advanced technology and modern instrumentation. The reader benefits from the in-depth analysis and the diverse sites and settings, where the models, applications and methods are tested.

284p bunmang_1 03-05-2013 79 15   Download

The potential evapotranspiration can be directly calculated by the Penman-Monteith equation, known as the one-step method. The approach requires data on the land cover and relatedvegetation parameters based on AVHRR and LDAS information, which are available in recent years. The Nong Son Basin, a sub-catchment of the Vu Gia - Thu Bon Basin in the Central Vietnam, is selected for this study. To this end, NAM model was used; the obtained results show that the NAM model has a potential to reproduce the effects of potential...

11p dem_thanh 22-12-2012 58 4   Download