Performance Characteristics of Self-Propelled Center-Pivot Sprinkler Irrigation System

1968 ◽  
Vol 11 (1) ◽  
pp. 0011-0015 ◽  
Author(s):  
D. F. Heermann and P. R. Hein
Keyword(s):  
Irrigation System ◽  
Sprinkler Irrigation ◽  
Performance Characteristics ◽  
Center Pivot

scholarly journals Identification of Gaps and Remedies for Center Pivot Sprinkler Irrigation System in North-West Ethiopia

2019 ◽  
pp. 1-6
Author(s):  
Kasa MekonenTiku ◽  
Pratap Singh
Keyword(s):  
Control System ◽  
Irrigation System ◽  
Sprinkler Irrigation ◽  
Sprinkler System ◽  
Northwest Ethiopia ◽  
Remedial Measures ◽  
North West ◽  
Tigray Region ◽  
Center Pivot ◽  
North West Ethiopia

The study was carried out to study on identification of performance gaps for improvement of center pivot sprinkler system in the Tigray region of Northwest Ethiopia. The objective of the study was to identify center pivot sprinkler irrigation system gaps and suggest remedial measures for improvement of the center pivot sprinkler irrigation system. The methods used for gap Identification were observation, Interview, measurement, and using design document. Center pivot sprinkler gaps identification study revealed that Excess runoff due to leaky boots and higher application depth, absence of regular checkup for emitting devices, and improper scheduling were dominant gaps and Making functional an Automatic control system, regular checkup and maintenance of emitting accessories and proper scheduling could minimize the identified problems and finally the irrigation efficiency would be amended.

scholarly journals Evaluating the Irrigation Practice of Center Pivot Sprinkler Irrigation System at Hiwot Agricultural Mechanization, Ethiopia

2019 ◽  
pp. 1-7
Author(s):  
Kasa Mekonen Tiku ◽  
Pratap Singh
Keyword(s):  
Flow Rate ◽  
Irrigation System ◽  
Sprinkler Irrigation ◽  
Irrigation Scheduling ◽  
Water Requirement ◽  
Crop Water Requirement ◽  
Crop Water ◽  
Irrigation Practice ◽  
Center Pivot ◽  
Actual Flow Rate

Irrigation practice evaluation of center pivot sprinkler irrigation system at Hiwot Agricultural Mechanization farm, North/west Ethiopia was conducted. The aim of the study was evaluating the existing center pivot irrigation practice in terms of irrigation scheduling. Measuring flow rate of center pivot machines for existing irrigation practice and Crop water requirement based scheduling was used to evaluate the system. The highest value of crop water requirement at location m6, m7 and m12 was 5.24 mm/day in September at mid-stage and for location m4 and m8 in October at mid-stage equal to 4.99 mm/day. Whereas, the lowest crop water requirement at location m6, m7 and m12 was 2.52 mm/day in July at the initial stage which was and for location m4 and m8 in august at initial stage equal to 2.08 mm/day. The actual flow rate of center pivot machines varies from 0.7l/s for m7 to a maximum of 1l/s for m4 whereas estimated crop water requirement flow rate varies from 0.6l/s for m6 to a maximum of 0.8l/s for m4. The study also revealed that the actual flow rate of the nozzles was excess. Therefore improvement of center pivot sprinkler irrigation system can be amended by using proper irrigation scheduling and by introducing an automatic control system.

scholarly journals DESEMPENHO DO SISTEMA DE IRRIGAÇÃO POR ASPERSÃO, TIPO PIVÔ CENTRAL REBOCÁVEL.

Irriga ◽  
2009 ◽  
Vol 14 (4) ◽  
pp. 481-491
Author(s):  
José Dantas Neto ◽  
Jonas Carlos Santino Silva ◽  
Maria Salludeladia Sobral de Farias ◽  
Carlos Henrique de Azevedo de Farias ◽  
Carlos Alberto Vieira de Azevedo
Keyword(s):  
Irrigation System ◽  
Irrigation Management ◽  
Sprinkler Irrigation ◽  
Mean Value ◽  
Low Flow ◽  
Applied Water ◽  
Municipal District ◽  
Center Pivot ◽  
System 2 ◽  
The Mean

DESEMPENHO DO SISTEMA DE IRRIGAÇÃO POR ASPERSÃO, TIPO PIVÔ CENTRAL REBOCÁVEL.  José Dantas Neto; Jonas Carlos Santino Silva; Maria Sallydelâdia Sobral de Farias; Carlos Henrique de Azevedo de Farias; Carlos Alberto Vieira de Azevedo.Departamento de Engenharia Agrícola, Universidade Federal de Campina Grande, Campina Grande, PB, [email protected]  1 RESUMO O objetivo deste trabalho foi avaliar a performance de um pivô central rebocável em nível de campo, na Fazenda Capim, localizada no município de Capim-PB. Os resultados da avaliação do equipamento nas três bases estudada levaram a concluir que: o equipamento apresentou bons resultados quando analisado como um todo para as base, constatou-se problemas de uniformidade e de eficiência em alguns setores quando a análise foi feita por raio individualmente, indicando setores com déficit e outros com excesso de água, o equipamento apresentou seus piores resultados quando foi avaliado na base 5, verificou-se que existe uma dispersão das lâminas de água aplicadas em relação ao valor médio, em todas as bases estudadas, as pressões de entrada do pivô nas bases, 4 e 5 estão muito abaixo da pressão recomendada o que resultou numa baixa vazão nestas bases. UNITERMOS: irrigação, manejo, variabilidade. DANTAS NETO, J.; SILVA, J. C. S.; FARIAS, M. S. S. de; FARIAS, C. HENRIQUE de A. de; AZEVEDO, C. A. V. de. PERFORMANCE OF TOWABLE CENTER PIVOT TYPE SPRINKLER IRRIGATION SYSTEM  2 ABSTRACT The objective of this work was to evaluate the performance of a towable pivot center in the field on Fazenda Capim in the municipal district of Capim-PB. The results of the equipment evaluation of the three studied bases showed that the equipment presented good results when analyzed as a whole for them. Uniformity and efficiency problems in some sections were analyzed when the analysis was individually made by ratio, indicating sections with deficit and other with excess of water. The equipment presented their worst results when it was evaluated in base 5. It was verified a dispersion of the applied water sheets in relation to the mean value, in all studied bases. The pressures on pivot in bases 4 and 5 are a lot below the recommended pressure and resulted in low flow in these bases.  KEYWORDS: irrigation, management, variability 

Analytical Head Loss Equation of Center-Pivot Irrigation System

2021 ◽  
Vol 147 (7) ◽  
Author(s):  
Amin Seyedzadeh ◽  
Amir Panahi ◽  
Eisa Maroufpoor ◽  
Abdolmajid Liaghat
Keyword(s):  
Irrigation System ◽  
Head Loss ◽  
Center Pivot

scholarly journals AGRONOMIC CHARACTERISTICS OF THE PACOVAN ORGANIC BANANA IN IRRIGATION SYSTEMS IN THE AÇU-RN VALLEY

2018 ◽  
Vol 31 (2) ◽  
pp. 370-378
Author(s):  
JÚLIO JUSTINO DE ARAÚJO ◽  
VANDER MENDONÇA ◽  
MARIA FRANCISCA SOARES PEREIRA ◽  
MATHEUS DE FREITAS SOUZA
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Sprinkler Irrigation ◽  
Tropical Region ◽  
Irrigation Systems ◽  
Banana Production ◽  
Banana Tree ◽  
The One ◽  
Small Producers ◽  
Alternative Irrigation

ABSTRACT The banana tree is grown in an extensive tropical region throughout the world, usually by small producers. The present work had the objective of evaluating irrigation systems in banana production in the Açu-RN Valley, aiming at alternatives so that they can be recommended to farmers in the Açu Valley region. The experiment was carried out in the area of the School Farm of the IFRN Campus Ipanguaçu, located in the municipality of Ipanguaçu-RN. The experiment was carried out in a randomized complete block design with subdivided plots and eight replications. The irrigation systems were: irrigation, drip irrigation, micro sprinkler and alternative irrigation. The plots were composed of eight useful plants with spacing in double rows 4 x 2 x 2 m. Eight characteristics related to production were evaluated: bunch mass (MC); number of leaves (NP); number of fruits per cluster (NFC); mean mass of the leaves (MMP); diameter of the fruit of the second seed (DF2P); length of the fruit of the second seed (CF2P); mean fruit mass (MMF); productivity (Prod). The data were submitted to analysis of variance and the means were compared by the Tukey test at 5% of probability. In the first cycle of production the sprinkler irrigation system was the one that presented better results the productivity of the Pacovan banana tree; in the 3rd cycle the alternative irrigation system was the one that showed better results the productivity of the banana tree; where the electrical conductivity correlated with the sodium adsorption ratio in the irrigation water, contributed to a moderate limitation of use.

scholarly journals Crop rotation, green manure and nitrogen fertilizers in upland rice under no-tillage

2018 ◽  
Vol 48 (2) ◽  
pp. 153-162 ◽  
Author(s):  
Orivaldo Arf ◽  
José Roberto Portugal ◽  
Salatiér Buzetti ◽  
Ricardo Antônio Ferreira Rodrigues ◽  
Marco Eustáquio de Sá
Keyword(s):  
Cover Crops ◽  
Upland Rice ◽  
Irrigation System ◽  
Block Design ◽  
Sprinkler Irrigation ◽  
Pigeon Pea ◽  
Nitrogen Fertilizers ◽  
No Tillage ◽  
Brazilian Savannah ◽  
Corn Crop

ABSTRACT The Brazilian Savannah region presents a great potential for the expansion of upland rice crops. However, studies are necessary to identify practices that can improve the crop performance, especially in no-tillage systems. This study aimed to assess the effect of cover crops in association with corn on the development and yield of rice cultivated in rotation and cover fertilized with nitrogen doses. The sprinkler irrigation system was used and the experiment was developed in the 2014/2015 and 2016/2017 harvest years, using a randomized block design, in a 5 × 4 factorial scheme. The treatments consisted of the crop remains combinations of single corn crop, corn + Crotalaria spectabilis, corn + pigeon pea, corn + jack bean and corn + Urochloa ruziziensis, as well as cover nitrogen doses (0 kg ha-1, 40 kg ha-1, 80 kg ha-1 and 120 kg ha-1) in the rice. The cultivation of upland rice in rotation with corn + pigeon pea was favored by the greater soil cover and nitrogen supply via cycling, if compared to the rotation with single corn crop. The intercropped corn + pigeon pea cultivation in the previous summer resulted in a 15 % increase in the yield of rice grains seeded in the rotation, when compared to the single corn crop. The cover nitrogen application positively influenced the grain yield with the maximum estimated doses of 46 kg ha-1 and 105 kg ha-1 of nitrogen, respectively in the 2014/2015 and 2016/2017 harvest years.

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