Results 21 to 30 of about 15,471 (289)

Investigation of Hydraulic Indexes of Production Quality of Trickle Tube with in Line Emitter used in Iran [PDF]

open access: yesمهندسی منابع آب, 2019
The emitters are the most important part of drip irrigation systems, so the evaluation of the hydraulic performance of drippers is very important to have an efficient irrigation system.
sara abdi, Eisa Maroufpoor
doaj  

EVAPOTRANSPIRATION AND IRRIGATION WATER REQUIREMENTS EVALUATION OF CHINAROK AREA USING ASCE PENMAN- MONTEITH METHOD

open access: yesThe Iraqi Journal of Agricultural science, 2020
The Koya Directorate of Irrigation (KDI) has a plan to develop the agriculture and launch new agricultural projects in Chinarok area in particular for forestry and orchards plantation.
M. O. Al-Kazragy
doaj   +1 more source

MODELING SOIL WATER REDISTRIBUTION UNDER SURFACE DRIP IRRIGATION [PDF]

open access: yesEngenharia Agrícola, 2019
The main objective of this study was to develop a numerical model to simulate water distribution, and the shape of the wetted soil volume, resulting from a point source irrigation at the ground surface (dripper), given soil hydraulic properties and ...
Francisco D. D. Arraes   +2 more
doaj   +1 more source

WATER REQUIREMENTS FOR IRRIGATED SUGARCANE UNDER TRICKLE IRRIGATION [PDF]

open access: yesMisr Journal of Agricultural Engineering, 2008
Effect of irrigation water requirements and row spacing of surface and subsurface trickle irrigated sugarcane on soil moisture distribution, sugarcane yield, sugar percentage and water use efficiency were studied. There are three different lateral distance between plants (L) used in the experiment; 0.75 m, 1.00 m and 1.25 m under four irrigation ...
M. Hanafy, A. Mahrous, M. Z. El Garib
openaire   +1 more source

Modification of water application uniformity among closed circuit trickle irrigation systems [PDF]

open access: yes, 2010
The aim of this research was determine the ma- ximum application uniformity of closed circuit trickle irrigation systems designs. Laboratory tests carried out for Two types of closed circuits: a) One manifold for lateral lines or Closed cir-cuits with ...
Abd El-Hady, Mohamed A.   +4 more
core   +2 more sources

Backpressure effects on the flow-pressure relation of driplines [PDF]

open access: yesEngenharia Agrícola, 2016
For drip irrigation design and management, it is necessary to know the relation between flow and pressure acting on emitters. In the case of subsurface drip irrigation, the backpressure phenomenon may change the hydraulic characteristics of emitters ...
Michael S Thebaldi   +3 more
doaj   +1 more source

Land Evaluation System for Trickle and Sprinkle Irrigation Methods Using Fuzzy Logic System [PDF]

open access: yesعلوم و مهندسی آبیاری, 2018
Limited water and soil resources and growing population have led countries around the world towards raising agricultural production per unit area and optimal utilization of these resources.
Yaser Hoseini
doaj   +1 more source

Trickle irrigation systems affect spatial distribution of roots of banana crop

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental
Trickle irrigation has been largely used for banana in Brazil, mainly due to the increase in water and fertilizer use efficiency. These irrigation systems have different options concerning number, type and flow rate of emitters as well as for hydraulics,
Edvaldo B. Santana Junior   +5 more
doaj   +1 more source

Evaluation of irrigation and pruning on the phenology and yield of Theobroma cacao L.

open access: yesAgronomía Mesoamericana, 2019
Introduction. It is believed that only 0.5 % of the area planted worldwide with cocoa is irrigated. Water availability influences the rate of expansion of the tree canopy and thus light interception.
Diego Hernán Meneses-Buitrago   +3 more
doaj   +1 more source

Emitter discharge variability of subsurface drip irrigation in uniform soils: effect on water-application uniformity [PDF]

open access: yes, 2008
Emitter discharge of subsurface drip irrigation (SDI) decreases as a result of the overpressure in the soil water at the discharge orifice. In this paper, the variation in dripper discharge in SDI laterals is studied.
Gil Rodríguez, María   +4 more
core   +2 more sources

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