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Register a new userImprove the efficiency of drip irrigation system based on soil moisture
تحسين كفاءة نظام الري بالتنقيط بالاعتماد على رطوبة التربة
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Aِl-Baath University ورقة بحثية
Publication date
2017
fields
Technical Architecture
and research's language is
العربية
Created by
Shamra Editor
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نفذت التجربة بهدف تحسين كفاءة نظام الري بالتنقيط بالاعتماد على رطوبة التربة. و استخدم في التجربة مقياس غير مباشر لقياس الرطوبة موصول مع جهاز إشارة ( فاصل واصل ), و جهاز تحكم مبرمج على درجة رطوبة دنيا, و هي درجة السعة الحقلية للتربة و التي قيمتها ( 25%), و على درجة رطوبة عليا هي درجة الإشباع عند رطوبة (75%).
The experiment carried out to improve the efficiency of drip irrigation system , based on soil moisture. The indirect measure of humidity Was used in the experiment, connected with the pointing device (separator continued), and a control device programmed on a low humidity degree, which is degree the field capacity of the soil and which value is 25%, and on a high moisture degree which is saturation degree at 75%..
References used
LOPEZ, J.R.; ABREU, J.M.H. 1985, localized banana irrigation systems evaluation in the Canary Islands, driptrickle- irrigation in the action. Vol. I. 281-287
GOYAL, M.R.; COLBERG, O.; ACOSTA, A. 1985, xylem irrigation principles, prospects and problems. ASAE. Paper No. 85-2620. 18p
LEE, K.M.; PARK, K.S. 1986, A microcomputer based control system for green house-water management, Journale of Korean society for agricultural machinery, (KoreaR). V11(1). 31-36
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The purpose of this research is to design and realization of an electronic apparatus which is able to control the process of irrigation that depending on soil moisture .This apparatus organize the process of irrigation, when the level of soil moistur
e under a specific value that it was chosen depending on water field capacity of crop ,it operates the pump which connected with it, and when the moisture level reaches that value the pump stops working.
The apparatus consists of two parts:
The first part: An electronic circuit using a number of operational amplifiers ,some electronic elements ,and voltmeter to measure voltage between load resistance which is in serial with resistance between two probes that set in soil.
The second part: An electrical part ,which provides a secure connection between the previous electronic circuit and water pump.
This study was carried out on a simple of black soil .The relation between electrical resistance of soil and volume of water used in irrigation was drawing for three values of distance between probes and power supply. We found an intense declination curves for small values of used water volume.
This study was conducted at the Faculty of Agriculture, Damascus
University, during two seasons (2002-2003) to assess the effect of irrigation
methods (drip, sprinkler, furrow) of maize (Gota 82). The results showed
significant differences between
irrigation methods in grain and green weight
production (average of two seasons, for grain: 6.48 t/ha,6.065 t/ha, and 7.905
t/ha for drip, sprinkler and furrow irrigation respectively, and for green
weight 24.4t/ha, 22.04t/ha, and 25.75t/ha for drip, sprinkler and furrow
irrigation respectively).Concerning total water requirement, drip irrigation
method was the lowest one (average of two seasons, 4392.87m3/ha) followed by
sprinkler irrigation (5565m3/ha) compared with furrow irrigation
(9011.92m3/ha).
The purpose of this research is to apply a mathematical program to
calculate water and chemical balance in unsaturated soils, under the
influence of different methods of irrigation, in order to monitor the
amount of vertical drainage of water insi
de the soil and choose a
irrigation method that can reduce the phenomenon of groundwater
pollution.
Three irrigation methods were tested with different fertilization
method. The study was conducted in the western part of Homs
Governorate (AlQusair orchards).
This study was carried out on a 17 years Vineyard (Helwani,
Betamooni. Cvs) when the study started. Two deficit irrigation
treatments were studied (%88, 60%), in addition to the control (full irrigation), and each treatment included three replicati
ons. Drip irrigation technique was applied (one irrigation line for each tree line, and eight drippers for each tree). Fruit yield and sugar
percentage were observed under different water treatments.
In order to keep up with the latest international technologies which have been achieved recently.
We have to search continuously for the technological methods in order to improve the present situation of the institutions in the Syrian Arab Republic.
This research aims to build a network of Programmable Logic
Controllers (PLCs) with Human Machine Interface (HMI) and
supervisory control and data acquisition (SCADA) system, as well as, studying the most suitable protocols to build the network beside identifying the causes of choosing the protocol.
After studying and identifying it, we had better to use the
automated industrial network to improve the present situation of water company concerning with getting meters data accurately as fast as possible.
We build the mentioned network by means of a group of PLCs, so that, each one could be used to get the data for an avenue in Hama city.
These distributed controllers would be connected by a central
router in order to pass all the data to the water company center. We will use a HMI and SCADA system for showing collected data, controlling, and saving the collected data.
This HMI and SCADA system will be connected to the same
PLCs, and thus, we will get a distributed industrial network.
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