Results 61 to 70 of about 35,573 (203)

Evaluation of empirical methods to estimate reference evapotranspiration in Uberaba, State of Minas Gerais, Brazil Avaliação de métodos empíricos na estimativa devapotranspiração de referência para Uberaba - MG

Engenharia Agrícola, 2012
Evapotranspiration is the process of water loss of vegetated soil due to evaporation and transpiration, and it may be estimated by various empirical methods.
Giovani L. de Melo, André L. T. Fernandes   +1 more
doaj   +1 more source

The Unfolding Desert: Observed Structural Drying and Projected Aridity Risks in a Brazilian Family Farming Citizenship Territory

Land Degradation &Development, Volume 37, Issue 15, Page 10944-10959, September 2026.
ABSTRACT Aridification in Semiarid regions is a recurring theme in Intergovernmental Panel on Climate Change (IPCC) reports and has been documented in Northeastern Brazil. This study analyzes the spatiotemporal dynamics of aridification in the Lower São Francisco River “Citizenship Territory” (Sergipe and Alagoas) at a fine spatial resolution (~1 km ...
Carlos Eduardo Pacheco Lima, Júlio Roberto Araújo de Amorim, Marcus Aurélio Soares Cruz, Mariana Rodrigues Fontenelle   +3 more
wiley   +1 more source

Irrigation and nitrogen management in protein content and quality of common bean seeds

Bioscience Journal, 2017
The aim of this study was to investigate the influence of different irrigation managements and nitrogen topdressing rates on the protein content and physiological quality of common bean seeds.
Matheus Gustavo da Silva, Aliston Flávio de Souza, Gustavo Henrique Ferreira da Silva, Adriano da Silva Lopes, Paulo Eduardo Teodoro   +4 more
doaj   +3 more sources

Estimation of Evapotranspiration in Fars Province Using Experimental Indicators [PDF]

تحقیقات کاربردی علوم جغرافیایی, 2020
The purpose of this study is to determine the evapotranspiration in Fars province that in many studies such as hydrological balance of water, irrigation systems design and management, simulation of product volume and management of water resources is very
Mehdi Asadi, Mokhtar Karami
doaj  

CHIRPS‐Based Multi‐Index Assessment of Precipitation Variability and Drought Dynamics in Sulaymaniyah Province, Kurdistan Region of Iraq (1981–2023)

Meteorological Applications, Volume 33, Issue 5, September/October 2026.
A 43‐year multi‐index analysis of Sulaymaniyah Province reveals a 7.7% precipitation decline and a steep southwest‐to‐northeast gradient. SPEI shows a significant desiccating trend, with 86% of recent station‐years in drought. Southern districts are chronic drought hotspots, underscoring the need for spatially differentiated, climate‐resilient water ...
Halaw H. Kareem, Huner A. Khayyat, Heman Abdulkhaleq. A. Gaznayee, Fuad Alqrinawi, Tahseen A. Aziz, Sara H. Zaki, Ragheb K. Mohammad, Kawa Hakzi, Mattia Crespi   +8 more
wiley   +1 more source

Extra Dimensions to the Calibration of Hargreaves-Samani Equation Under Data-Scarce Environment [PDF]

Water Resources Management
Abstract Evapotranspiration estimates are paramount for understanding climatology and better water management, especially in regions notorious for recurrent droughts, high evapotranspiration losses and basins with overspilling. This study adds new dimensions to the adjustment of the Hargreaves-Samani model (HS) against the standard FAO Penman-
Ammar Ahmed Musa, Nadir Ahmed Elagib
openaire   +1 more source

Desempenho do irrigâmetro na estimativa da evapotranspiração de referência Performance of the "irrigâmetro" in the estimation of reference evapotranspiration

Revista Brasileira de Engenharia Agrícola e Ambiental, 2008
Neste trabalho objetivou testar o Irrigâmetro para estimar a evapotranspiração de referência comparativamente com o método de Penman-Monteith - FAO 56, e confrontar o seu desempenho com os métodos Penman modificado - FAO 24, Radiação - FAO 24, tanque ...
Rubens A. Oliveira, Cristiano Tagliaferre, Gilberto C. Sediyama, Franklin J. V. Materam, Paulo R. Cecon   +4 more
doaj   +1 more source

Crop coefficient and water requirement of prickly pear in the Agreste region of Alagoas state, Brazil [PDF]

Revista Brasileira de Engenharia Agrícola e Ambiental, 2019
Prickly pear cultivation has played an important role in the Brazilian livestock farming, being used as forage for animals in the Northeast region, especially during the drying season, because it is an excellent source of water.
Jesiele S. Divincula, Cinara B. da Silva, Marcio A. L. dos Santos, Daniella P. dos Santos, Luan W. dos Santos   +4 more
doaj   +1 more source

Development of machine learning-based reference evapotranspiration model for the semi-arid region of Punjab, India

Journal of Agriculture and Food Research, 2023
Evapotranspiration (ET) is a critical element of the hydrological cycle, and its proper assessment is essential for irrigation scheduling, agricultural and hydro-meteorological studies, and water budget estimation. It is computed for most applications as
Susanta Das, Samanpreet Kaur Baweja, Amina Raheja, Kulwinder Kaur Gill, Rakesh Sharda   +4 more
doaj   +1 more source

Projections of Meteorological Drought and Potential Evapotranspiration Using the RegCM4 Over Northeastern Iran

International Journal of Climatology, Volume 46, Issue 10, August 2026.
We downscale CanESM2 with the Regional Climate Model version 4 (20 km) and evaluate against 15 stations to derive monthly PET (Hargreaves–Samani) and SPEI for northeastern Iran (1990–2009, 2040–2059, 2080–2099). Results show robust PET increases and a shift toward more negative monthly SPEI—especially April–September—indicating earlier onset and longer
Nasrin Salehnia, Peter T. Wolter, Sylvester Chikabvumbwa, Fateme Hosseini, Sohrab Kolsoumi, Ali Farid, Hashem Zahedipour   +6 more
wiley   +1 more source