Results 11 to 20 of about 14,133 (315)

Economic Viability of Ultrasonic Sensor Actuated Nozzle Height Control in Center Pivot Irrigation Systems

open access: yesAgronomy, 2022
The coverage of center pivot irrigation systems used around the world has increased. One potential factor driving their adoption is improved water application efficiency relative to some other sprinkler or surface irrigation approaches.
Hadi A. AL-agele   +3 more
doaj   +1 more source

Technical Evaluation of Performed Centre Pivot Systems Case Study: Bardsir and Rayen of Kerman [PDF]

open access: yesعلوم و مهندسی آبیاری, 2015
The importance of proper management of water resources in Kerman, because of limited and water resources crisis is very high. This research has been based on two farm included two center pivot systems in Kerman’s Bardsir and Rayen.
Amin Sanaee   +2 more
doaj   +1 more source

Energy consumption reduction of a center-pivot with the use of a variable-frequency drive

open access: yesRevista Brasileira de Engenharia de Biossistemas, 2022
Pressure demand of a center-pivot can be controlled by variable frequency drives during irrigation system operations, leading to a rational use of electrical energy. However, numerous studies encountered problems due to the lack of field data to perform
Isabela Alvarenga Almeida   +5 more
doaj   +1 more source

Automatic Mapping of Center Pivot Irrigation Systems from Satellite Images Using Deep Learning

open access: yesRemote Sensing, 2020
The availability of freshwater is becoming a global concern. Because agricultural consumption has been increasing steadily, the mapping of irrigated areas is key for supporting the monitoring of land use and better management of available water resources.
Marciano Saraiva   +3 more
doaj   +1 more source

METHODOLOGY FOR DIMENSIONING OF A CENTER PIVOT IRRIGATION SYSTEM OPERATING WITH DRIPPER TYPE EMITTER [PDF]

open access: yesEngenharia Agrícola, 2017
: In Brazil, the conventional center pivot is widely used for irrigation of agricultural crops and its use has grown continuously. However, when improperly managed, it facilitates the development of diseases in all parts of the plant, with a direct ...
Alex N. de Almeida   +3 more
doaj   +1 more source

Automatic Identification of Center Pivot Irrigation Systems from Landsat Images Using Convolutional Neural Networks

open access: yesAgriculture, 2018
Being hailed as the greatest mechanical innovation in agriculture since the replacement of draft animals by the tractor, center pivot irrigation systems irrigate crops with a significant reduction in both labor and water needs compared to traditional ...
Chenxiao Zhang   +3 more
doaj   +1 more source

A DEVELOPED EXPERT SYSTEM FOR CENTER PIVOT IRRIGATION SYSTEM MANAGEMENT UNDER NEWLY RECLAIMED SOILS OF EGYPT [PDF]

open access: yesArab Universities Journal of Agricultural Sciences, 2019
Accurately estimation of actual crop evapotranspiration (ETa) as a parameter of irrigation scheduling is very critical for efficient use of limited irrigation water resources.
O. ohamed, A. El-Gindy, H. Mehawed
doaj   +1 more source

A Revised Equation of Water Application Efficiency in a Center Pivot System Used in Crop Rotation in No Tillage

open access: yesAgronomy, 2022
Correctly quantifying total losses of irrigation in a center pivot system is important for improving application management and efficiency (Ea). The equations usually used to estimate Ea in sprinkler irrigation systems do not consider certain aspects ...
Federico Aimar   +5 more
doaj   +1 more source

Friction Coefficient for Center Pivot Systems

open access: yesJournal of King Saud University: Engineering Sciences, 1995
An important objective of any center pivot irrigation system is to achieve a uniform distribution of water delivered through the sprinklers. In this study friction coefficients are developed for designing center pivot irrigation systems using two of the ...
Hussein M. Abo-Ghobar
doaj   +1 more source

Multispectral radiometric characterization of coffee rust epidemic in different irrigation management systems

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2020
Coffee rust (Hemileia vastatrix Berk. & Br.) is one of the most prominent diseases in coffee (Coffea arabica L.) and causes serious damage to the crop.
Miryan Silva de Oliveira Pires   +2 more
doaj   +1 more source

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