Results 21 to 30 of about 19,019 (261)

Increasing Shape Bias to Improve the Precision of Center Pivot Irrigation System Detection

open access: yesRemote Sensing, 2021
Irrigation is indispensable in agriculture. Center pivot irrigation systems are popular means of irrigation since they are water-efficient and labor-saving.
Jiwen Tang   +3 more
doaj   +1 more source

MATHEMATICAL MODEL FOR MICRO-IRRIGATION DESING FOR CENTER PIVOT CORNERS [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2009
A mathematical model was developed to analyzing hydraulic characteristics in a micro-irrigation system design micro-irrigation system for center pivot corners.
A.A. El-Shafei   +2 more
doaj   +1 more source

CENTER-PIVOT IRRIGATION WATER MANAGEMENT BASED ON SOIL SPECTRAL REFLECTANCE TECHNIQUE [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2015
Center pivot irrigation system has the potentiality for economically net return of various crop patterns, although it’s higher fixed cost’s inputs. Therefore, water management under the specified center pivot irrigation system can play a crucial role in ...
M. Elmarsafy   +3 more
doaj   +1 more source

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

Relativistic spin sum rules and the role of the pivot

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Spin sum rules depend on the choice of a pivot, i.e. the point about which the angular momentum is defined, usually identified with the center of the nucleon.
Cédric Lorcé
doaj   +1 more source

DEPIVOT: A model for center-pivot design and evaluation

open access: yesComputers and Electronics in Agriculture, 2012
Center-pivot sprinkler irrigation became very popular. Hence, aimed at farmers advising, the simulation model DEPIVOT has been developed with the objective of design new systems or changes in systems in operation. The software consists of a simulation package developed in Visual Basic and data base in Access.
Valín, M.I.   +3 more
openaire   +2 more sources

Water Use Efficiency, Yield and Quality of Sugar Beet Grown under Center Pivot and Fixed Sprinkler Irrigation Systems as Affected by Water Deficit and Boron Application. [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2017
A field experiment was conducted at a private farm located at Wadi El Natrun District, Al Behaira Governorate (30°484' N latitude and 30°497' E longitude) during seasons of 2013-2014 and 2014-2015 to evaluate the effect of irrigation techniques, deficit ...
M. El Dereny   +3 more
doaj   +1 more source

Evaluation of water distribution under pivot irrigation systems using remote sensing imagery in eastern Nile delta

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2017
Traditional methods for center pivot evaluation depend on the water depth distribution along the pivot arm. Estimation and mapping the water depth under pivot irrigation systems using remote sensing data is essential for calculating the coefficient of ...
E. Farg   +3 more
doaj   +1 more source

Chemigation of Peach Trees with a Center Pivot

open access: yesHortScience, 1988
Abstract Pesticides were applied to ‘Rio Grande’ peach [ Prunus persica (L.) Batsch] trees at recommended rates from bloom to harvest using three sprinkler configurations on a center pivot and an air-blast sprayer.
Dean R. Evert   +3 more
openaire   +1 more source

Selection of end gun and optimization of water distribution under a center pivot irrigation system

open access: yesAgricultural Water Management
When a center pivot irrigation system is adopted in a square field, its four corners cannot be irrigated. Therefore, an end gun is often installed at the end of the system to expand the irrigated area; as such, proper selection of the end gun and ...
Xin Hui   +5 more
doaj   +1 more source

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