Performance of irrigation systems located in the culture of sweet potato in Guaraciaba do Norte-CE

Irrigation systems may exhibit variations in performance when poorly dimensioned or depending on the time of use. In this sense, the objective of this study was to evaluate the performance of irrigation systems located by micro sprinkler and drip irrigation in the sweet potato crop in a family property in the municipality of Guaraciaba do Norte-CE. The property under study in this research has a total area of 2.5 ha. The area cultivated with sweet potatoes is 120 m2 with 50% of the area irrigated by drip irrigation and the remainder irrigated by micro sprinkler. In order to analyze the performance of the irrigation systems, the methodology proposed by Keller and Karmeli (1975) was adopted, in which the flow rates of the emitters are determined in pre-established positions. Were determined the coefficients of uniformity of Christiansen (CUC); coefficient of statistical uniformity (CUE); Hart uniformity coefficient and distribution uniformity coefficient (CUD). Irrigation systems presented uniformity coefficients higher than 90%, for all the equations applied in this work, both also presented application efficiency higher than 85%. Due to the high coefficients of uniformity found it was concluded that the irrigation systems located on the property were well sized and mounted

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Agronomic performance of sweet potato crop in succession to leguminous plants in monocropping and intercropped with corn

Horticultura Brasileira ◽

10.1590/s0102-0536-20210209 ◽

2021 ◽

Vol 39 (2) ◽

pp. 186-191

Author(s):

Jhonatan M Goulart ◽

Adriano A Rocha ◽

José Antonio A Espindola ◽

Ednaldo da S Araújo ◽

José Guilherme M Guerra

Keyword(s):

Sweet Potato ◽

Plant Biomass ◽

Potato Crop ◽

Biomass Accumulation ◽

Agronomic Performance ◽

Sweet Potatoes ◽

Leguminous Plants ◽

Jack Bean ◽

Spontaneous Vegetation ◽

Second Year

ABSTRACT This study aimed to evaluate sweet potato performance in succession to annual herbaceous leguminous plants, in monocropping or intercropped with corn, under agroecological management, under Baixada Fluminense conditions. The experimental design was randomized blocks, with five treatments and four replicates. The treatments consisted of pre-cropping with the following species: crotalária (Crotalaria juncea) under monocropping system, crotalária intercropped with corn (Zea mays), jack bean (Canavalia ensiformis) under monocropping system, jack bean intercropped with corn and spontaneous vegetation. The results showed that monocropped crotalária reached the greatest dry biomass accumulation during two consecutive years of succession. In the second year, this treatment provided greater accumulated amounts of N, K and Mg in plant biomass. Growing sweet potatoes in succession to the pre-cropping of crotalária is advantageous, as it provided an increase in vegetable productivity in the second year of succession.

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LAYOUT AND DESIGN SOLUTIONS OF FILTERING WATER INTAKES FROM SHALLOW WATERCOURSES FOR DRIP IRRIGATION SYSTEMS

Ecology and water management ◽

10.31774/2658-7890-2021-3-3-103-120 ◽

2021 ◽

Author(s):

A. S. Shtanko ◽

◽

V. N. Shkura ◽

Keyword(s):

Water Intake ◽

Drip Irrigation ◽

Agricultural Development ◽

Drainage Water ◽

Low Flow ◽

Mountain Streams ◽

Irrigation Systems ◽

Flow Rates ◽

Hydrographic Features ◽

Sand And Gravel

Purpose: development of layout and design schemes for low-flow water intakes, arranged on shallow river and stream watercourses for supplying water to drip irrigation systems. Agricultural development of terraces and floodplains of small foothill and mountain streams actualizes the development of facilities for water intake from them for the purpose of irrigating land. Morphological and hydrographic features, including shallow low-water depths, high flow rates, flow rates variability, saturation with sediments, the presence of underflow and overflow runoff, etc., make water intake from such watercourses difficult and specific. These circumstances predetermine the relevance of water intake structures development corresponding to the specified conditions. Materials and Methods. When developing the layout and design schemes of low-flow water intakes from shallow watercourses, the technologies of exploratory design of engineering systems and structures were used. Results. With regard to the morphometric, hydrological and other conditions of shallow foothill and mountain streams, a water intake with a bottom water intake was adopted for development. The water intake part of headworks is designed in the form of a toe drain, which has under-flow and overflow intake parts that allow water intake from the channel and off-channel water streams. The toe is made of two or three layers of sand and gravel material. Drainage pipes or pipe filters are used as a drainage element. Depending on the conditions of the watercourse, water intakes with transverse, longitudinal and pocket-coastal placement of water intakes are proposed. Conclusion. The layout and design schemes of filtering water intakes from shallow watercourses based on the use of overflow, underflow and combined structures of multilayer drainage water intakes with stream (transverse and longitudinal) and off-channel (pocket-coastal) placement have been proposed and developed.

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ANÁLISE DA UNIFORMIDADE DE APLICAÇÃO EM DIFERENTES SISTEMAS DE CULTIVO COM IRRIGAÇÃO LOCALIZADA

Irriga ◽

10.15809/irriga.2017v1n1p57-63 ◽

2017 ◽

Vol 1 (1) ◽

pp. 57-63

Author(s):

Kevim Muniz Ventura ◽

Regiane De Carvalho Bispo ◽

ROBERTA DANIELA DA SILVA SANTOS ◽

MARCELLO HENRYQUE COSTA DE SOUZA ◽

RODRIGO MÁXIMO SÁNCHEZ ROMÁN

Keyword(s):

Drip Irrigation ◽

Agricultural Research ◽

Cropping Systems ◽

Irrigation Management ◽

Water Application ◽

Irrigation Systems ◽

Uniformity Coefficient ◽

Irrigation Uniformity ◽

Vertical System

ANÁLISE DA UNIFORMIDADE DE APLICAÇÃO EM DIFERENTES SISTEMAS DE CULTIVO COM IRRIGAÇÃO LOCALIZADA KEVIM MUNIZ VENTURA1; REGIANE DE CARVALHO BISPO1; ROBERTA DANIELA DA SILVA SANTOS1; MARCELLO HENRYQUE COSTA DE SOUZA1 E RODRIGO MÁXIMO SÁNCHEZ ROMÁN2 1Programa de Pós-Graduação em Irrigação e Drenagem, Universidade Estadual Paulista “Julio de Mesquita Filho” - UNESP/FCA, Rua José Barbosa de Barros, 1780, Botucatu, SP, [email protected], [email protected], [email protected], [email protected]. 2Professor assistente, Departamento de Engenharia Rural, FCA/UNESP. Botucatu, SP, [email protected] *Extraído da dissertação de mestrado do primeiro autor. 1 RESUMO A crescente necessidade de elevar a produção em menos espaço guia as pesquisas agropecuárias visando criar tecnologias que busquem atender essa demanda. A possibilidade de produzir hortaliças de forma alternativa é algo que desperta atenção nos agricultores familiares e moradores de áreas urbanas que desejam produzir o próprio alimento. A irrigação é uma das práticas de maior importância para o sucesso de uma horta, seja ela convencional ou vertical, por isso é de suma importância que sistemas de irrigação apresentem uma boa uniformidade de aplicação de água. Desta forma, avaliar o sistema é uma etapa primordial para garantir o adequado manejo da irrigação. O objetivo deste trabalho foi avaliar os coeficientes de uniformidade (Christiansen, de distribuição, estatístico e eficiência de aplicação) em uma fita gotejadora após 2 ciclos, em dois sistemas de cultivo (convencional e vertical). Com os resultados obtidos, foi possível observar que a fita utilizada no sistema vertical obteve coeficientes de uniformidade superiores com o passar dos ciclos, garantindo que a aplicação de água neste sistema fosse mais satisfatória que o sistema convencional. Palavras-chave: Sistema vertical, gotejamento, coeficiente de uniformidade VENTURA, K. M.; BISPO, R. DE C.; SANTOS, R. D. S.; SOUZA, M. H. C.; SÁNCHEZ-ROMÁN, R. M. ANALYSIS OF APPLICATION UNIFORMITY IN DIFFERENT LOCALIZED IRRIGATION SYSTEMS 2 ABSTRACT The growing need to leverage production in less space drives the agricultural research, making it to create technologies that seek to meet this demand. The possibility of producing vegetables in an alternative way is something that draws the attention of family of farmers and urban dwellers who wish to produce their own food. Irrigation is one of the most important practices for the success of a conventional or vertical garden, so it is critical that irrigation systems have an excellent uniformity in the water application. Thus, to evaluate the system is a primordial stage to guarantee the adequate irrigation management. This work aims to evaluate the uniformity coefficients (Christiansen, distribution and statistical coefficients) in a drip tape after 2 cycles, in two cropping systems (traditional and vertical). With the results obtained, it was possible to observe that the drip tape used in the vertical system got higher uniformity coefficients than the conventional one, ensuring that the application of water in this system was more satisfactory. Keywords: Vertical system, drip irrigation, uniformity coefficient

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Differential Response of Corn and Sweet Potatoes to Zn Applications in an Oxisol in Northwestern Puerto Rico

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v64i4.10194 ◽

1969 ◽

Vol 64 (4) ◽

pp. 482-488

Author(s):

J. Badillo-Feliciano ◽

M. A. Lugo-López

Keyword(s):

Sweet Potato ◽

Crop Production ◽

Potato Crop ◽

Potato Cultivar ◽

Sweet Potatoes ◽

High Degree ◽

Very High ◽

Role Of Zn ◽

Fair Degree

Experiments were conducted in an Oxisol in an attempt to clarify the role of Zn in crop production. The Capo fertilizer-yield equation was applied to the first of two consecutive corn crops of Pioneer X-3068 and Funk's G-795W, grown in an exposed Coto clay subsoil. The equation made possible the estimation of grain corn yields with a fair degree of precision. A crop of a white-fleshed sweet potato cultivar (Mina) was grown in a typical undisturbed Coto clay near the site where the corn experiments were conducted. Near maximum yields could be obtained with the application of only 3.3 kg/ha of Zn. Stover yields were estimated with a very high degree of precision (r2 = 0.98) from the corresponding equation. No response to Zn was obtained in the second consecutive corn crop (Funk's G-795W) nor in the sweet potato crop.

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Economic viability of retrofiting emitters in center pivot irrigation systems

Engenharia Agrícola ◽

10.1590/s0100-69162012000300019 ◽

2012 ◽

Vol 32 (3) ◽

pp. 602-608 ◽

Cited By ~ 1

Author(s):

Cornélio A. Zolin ◽

Rubens D. Coelho ◽

Janaina Paulino ◽

Marcos V. Folegatti

Keyword(s):

Decision Making ◽

Irrigation System ◽

Potato Crop ◽

Economic Viability ◽

Water Application ◽

Economic Perspective ◽

Sale Price ◽

Irrigation Systems ◽

Uniformity Coefficient ◽

Center Pivot

Although several studies have been conducted to evaluate the uniformity of water application under center pivot irrigation systems, there are few studies concerning the economic perspective of such coefficient. The aim of this study is to present a methodology to accomplish an economic analysis as support for the decision-making to retrofit emitters in center pivot irrigation systems, and to attribute an economic meaning to the uniformity coefficient of water application taking into account the response function productivity to the amount of water applied and the sale price of the crops. In the hypothetic calculation example considering the variation of revenue of potato crop under center pivot irrigation system, it was verified that the area with uniformity coefficient of water application of 90% brought an income increase of BR$ 1,992.00, considering an area about 1,0 ha. Thus, it can be concluded that the methodology presented has met the objectives proposed in the study and made it possible to attribute an economical meaning to the coefficient of water uniformity application.

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COMPARAÇÃO ENTRE METODOLOGIAS PARA DIMENSIONAMENTO DE LINHAS LATERAIS PAREADAS DE GOTEJAMENTO EM DESNÍVEL

Irriga ◽

10.15809/irriga.2020v25n4p747-753 ◽

2020 ◽

Vol 25 (4) ◽

pp. 747-753

Author(s):

Icaro Monteiro Galvão ◽

João Jesus Guimarães ◽

Alberto Mario Arroyo Avilez ◽

João Carlos Cury Saad

Keyword(s):

Drip Irrigation ◽

Irrigation Systems ◽

Second Best ◽

Flow Variation ◽

Lateral Lines ◽

Distribution Uniformity ◽

E Mail

COMPARAÇÃO ENTRE METODOLOGIAS PARA DIMENSIONAMENTO DE LINHAS LATERAIS PAREADAS DE GOTEJAMENTO EM DESNÍVEL ÍCARO MONTEIRO GALVÃO1; JOÃO DE JESUS GUIMARÃES2; ALBERTO MARIO ARROYO AVILEZ3 E JOÃO CARLOS CURY SAAD4 [1] Departamento de Engenharia de Biossistemas, ESALQ/USP, Av. Pádua Dias, São Judas, CEP 13418-900, Piracicaba, SP, Brasil. e-mail: [email protected] 2 Departamento de Engenharia Rural e Socioeconomia, FCA/UNESP, Av. Universitária 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. e-mail: [email protected] 3 Departamento de Engenharia Rural e Socioeconomia, FCA/UNESP, Av. Universitária 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. e-mail: [email protected] 4 Prof. Titular, Departamento de Engenharia Rural e Socioeconomia, FCA/UNESP, Av. Universitária 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brasil. e-mail: [email protected] 1 RESUMO O objetivo deste trabalho foi comparar diferentes metodologias para a determinação dos trechos em aclive e em declive de linhas laterais pareadas em terreno com desnível uniforme, para um sistema de irrigação por gotejamento. Para tal utilizou-se as metodologias propostas por Keller e Bliesner (1990), Jiang e Kang (2010) e Monserrat; Barragan e Cots (2018). Calculou-se o comprimento das linhas em aclive e declive, o coeficiente de uniformidade de distribuição (CUD) e as variações de vazão e de pressão para ambas as condições topográficas. A metodologia de Keller e Bliesner (1990) foi a que melhor dimensionou as linhas pareadas, com menor diferença de desempenho entre os trechos em aclive e declive, em termos de CUD e de variação de vazão e de pressão, além de permanecer dentro do limite máximo de variação de vazão de 10%. O segundo melhor desempenho foi obtido pelo método de Monserrat; Barragan e Cots (2018). O procedimento de Jiang e Kang (2010) foi o menos adequado, tendo gerado no trecho em aclive variação de vazão de 10,9%. Palavras-chave: gotejamento, linha lateral, comprimento, declividade. GALVÃO, I. M.; GUIMARÃES, J. J.; AVILEZ, A. M. A.; SAAD, J. C. C. METHODOLOGIES COMPARISON FOR DESIGN OF PAIRED DRIP LATERALS ON UNIFORMLY SLOPING FIELDS 2 ABSTRACT This work aimed to compare different methodologies for designing paired laterals of drip irrigation systems on uniformly sloping fields. For this purpose, the methodologies proposed by Keller e Bliesner (1990), Jiang e Kang (2010), and Monserrat; Barragan e Cots (2018) were evaluated. The length of uphill and downhill lateral lines, distribution uniformity (DU), flow, and pressure variations were calculated for both topographic conditions. The Keller e Bliesner (1990) methodology generated the best design for paired laterals, with the lowest DU difference between the uphill and downhill sections; also, the flow variation remained under the 10% limit. The second-best performance was obtained by the method of Monserrat; Barragan e Cots (2018). Jiang e Kang (2010)’s procedure was the least adequate, generating a 10.9% flow variation in the uphill section. Keywords: drip irrigation, hydraulic, uniformity.

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Using the step by step models to evaluate field application uniformity of subsurface drip irrigation systems

Brazilian Journal of Biological Sciences ◽

10.21472/bjbs.061221 ◽

2019 ◽

Vol 6 (12) ◽

pp. 233-241

Author(s):

Hiba Ghazouani ◽

Basma Latrech ◽

Mguidich Belhaj Amel ◽

Boutheina M. Douh ◽

Ghazouani Issam ◽

...

Keyword(s):

Drip Irrigation ◽

Water Distribution ◽

Soil Surface ◽

Field Evaluation ◽

Field Application ◽

Subsurface Drip Irrigation ◽

Irrigation Systems ◽

Water Losses ◽

Uniformity Coefficient ◽

Subsurface Drip

Compared to other irrigation methods, drip irrigation systems (DI) are considered one of the most efficient form of irrigation. Subsurface drip irrigation allowed reducing water losses by evaporation, runoff, and deep percolation comparing to other irrigation systems supplying water on soil surface. Field evaluation of Uniformity of water applications and its stability, however, are still a matter of controversy and deserve more investigation, since the collection of water discharged needs to excavate the soil around the emitters. Experiments carried out at the Department of Rural and Agrifood Engineering of Polytechnic University of Valencia allowed describing a methodology to assess the performance of drip irrigation through hydraulic characterizations and an emission uniformity coefficient, using the step by step models. Calculations evidenced that operating pressures on emitters ranged between 127.6 kPa and 131.7 kPa, whereas the corresponding flow rates varied from 4.00 L/h and 4.07 L/h, with an average value of 4.02 L/h. Variability in the emitters’ flow rate resulted very limited due to the short length of the lateral (25.6 m). However, more attention should be paid to this for a longer field dimensions. Consequently, the value of emission uniformity coefficient was equal to 96.3%, testifying the uniform water distribution within the sub-plot.

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Shape and Form Optimization of On-Line Pressure-Compensating Drip Emitters to Achieve Lower Activation Pressure

Journal of Mechanical Design ◽

10.1115/1.4038211 ◽

2017 ◽

Vol 140 (3) ◽

Cited By ~ 6

Author(s):

Pulkit Shamshery ◽

Amos G. Winter

Keyword(s):

Drip Irrigation ◽

Irrigation System ◽

Optimization Method ◽

Irrigation Systems ◽

Flow Rates ◽

Production Run ◽

On Line ◽

Manufacturing Techniques ◽

Line Pressure ◽

Solar Powered

This study presents the design and validation of on-line pressure-compensating (PC) drip irrigation emitters with a substantially lower minimum compensating inlet pressure (MCIP) than commercially available products. A reduced MCIP, or activation pressure, results in a drip irrigation system that can operate at a reduced pumping pressure, has lower power and energy requirements, requires a lower initial capital cost, and facilitates solar-powered irrigation systems. The technology presented herein can help spread drip irrigation to remote regions and contribute to reducing poverty, particularly in developing countries. The activation pressures of drip emitters at three flow rates were minimized using a genetic algorithm (GA)-based optimization method coupled with a recently published fluid–structure interaction analytical model of on-line PC drip emitter performance. The optimization took into account manufacturing constraints and the need to economically retrofit existing machines to manufacture new emitters. Optimized PC drip emitter designs with flow rates of 3.3, 4.2, and 8.2 lph were validated using precision machined prototype emitters. The activation pressure for all was ≤0.2 bar, which is as low as 16.7% that of commercial products. A limited production run of injection molded 8.2 lph dripper prototypes demonstrated they could be made with conventional manufacturing techniques. These drippers had an activation pressure of 0.15 bar. A cost analysis showed that low MCIP drip emitters can reduce the cost of solar-powered drip irrigation systems by up to 40%.

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UNIFORMITY OF DRIP IRRIGATION SYSTEM WITH LIQUID PEAT ON DIFFERENT SLOPES

Irriga ◽

10.15809/irriga.2021v1n2p357-366 ◽

2021 ◽

Vol 1 (2) ◽

pp. 357-366

Author(s):

Allan Remor Lopes ◽

Marcio Antonio Vilas Boas ◽

Felix Augusto Pazuch ◽

Luciano Dalla Corte ◽

Benedito Martins Gomes ◽

...

Keyword(s):

Flow Rate ◽

Drip Irrigation ◽

Control Charts ◽

Test Bench ◽

Irrigation System ◽

Drip Irrigation System ◽

Irrigation Systems ◽

Uniformity Coefficient ◽

Cusum Control Charts ◽

Drip Fertigation

UNIFORMITY OF DRIP IRRIGATION SYSTEM WITH LIQUID PEAT ON DIFFERENT SLOPES ALLAN REMOR LOPES1; MARCIO ANTONIO VILAS BOAS1; FELIX AUGUSTO PAZUCH1; LUCIANO DALLA CORTE1; BENEDITO MARTINS GOMES1; ROSEBEL TRINDADE CUNHA PRATES2 1 Programa de Pós-Graduação em Engenharia Agrícola (PGEAGRI) – Departamento de Recursos Hídricos e Saneamento Ambiental (RHESA), Universidade Estadual do Oeste do Paraná (UNIOESTE), Rua Universitária 2069, Jardim Universitário, CEP: 85819-110, Cascavel, Paraná, Brasil, [email protected]; [email protected]; [email protected]; [email protected]; [email protected] 2Centro de Ciências da Saúde, Universidade Estadual do Oeste do Paraná (UNIOESTE), Rodovia PR 182 Km 02, Francisco Beltrão, Paraná, Brasil, [email protected] 1 ABSTRACT The use of liquid peat is an alternative to use of mineral fertigation However, it is necessary to monitor the uniformity of this organomineral fertilizer in order to obtain its adequate use, so the organomineral fertilizer can produce better quality crops. This study aimed to evaluate the uniformity of a drip fertigation system with liquid peats on different slopes. The experiment was carried out on a test bench, where the flow rate of the drippers was determined and subsequently its uniformity was calculated using the Christiansen uniformity coefficient (CUC) fot the treatments in level (0%), uphill (2%) and downhill (2%). The experimental statistics were performed by analysis of variance (ANOVA) and Tukey’s test at 5% probability to compare uniformity, in addition to the analysis of the process by Shewhart and CUSUM control charts. Liquid peat showed excellence in its uniformity (>90%) while used for drip irrigation systems. The liquid peat applied at the level slope was the most uniform, followed by upslope and downslope treatments, respectively. Through Shewhart and CUSUM control charts, it was possible to affirm that fertigation with liquid peat in level obtained a better performance. Keywords: control chart, uniformity, organomineral fertilizer, microirrigation. LOPES, A. R.; VILAS BOAS, M. A.; PAZUCH, F. A.; DALLA CORTE, L.; GOMES, B. M.; PRATES, R. T. C. UNIFORMIDADE DE SISTEMA DE IRRIGAÇÃO POR GOTEJAMENTO COM TURFA LÍQUIDA EM DIFERENTES INCLINAÇÕES 2 RESUMO O uso da turfa líquida é uma alternativa ao uso da fertirrigação mineral. No entanto, é necessário o monitoramento da uniformidade deste fertilizante organomineral para obter seu uso adequado, assim o fertilizante organomineral pode produzir culturas de melhor qualidade. O objetivo deste estudo foi avaliar a uniformidade de um sistema de fertirrigação por gotejamento com turfa líquida em diferentes inclinações. O experimento foi conduzido em uma bancada de testes, onde a vazão dos gotejadores foi determinada e consequentemente sua uniformidade pelo Coeficiente de uniformidade de Christiansen (CUC) para os tratamentos em nível (0%), aclive (2%) e declive (2%). A estatística experimental foi determinada pela análise de variância (ANOVA) e teste de Tukey a 5% de probabilidade na comparação da uniformidade, complementando os gráficos de controle de Shewhart e CUSUM. A turfa líquida apresentou excelência na sua uniformidade (> 90%) em sistemas de irrigação por gotejamento. A turfa aplicada em nível (0%) foi a mais uniforme, seguido pelos tratamentos em aclive e declive, respectivamente. Através dos gráficos de controle de Shewhart e CUSUM foi possível afirmar que a fertirrigação em nível obteve uma melhor performance. Palavras-chave: gráficos de controle, uniformidade, fertilizante organomineral, microirrigação.

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DESEMPENHO DE EMISSORES APLICANDO RESÍDUOS FINOS DE ROCHAS ORNAMENTAIS

Irriga ◽

10.15809/irriga.2017v1n1p118-126 ◽

2018 ◽

Vol 1 (1) ◽

pp. 118-126

Author(s):

Carlos Magno Mulinario Poloni ◽

Gustavo Haddad Souza Vieira ◽

José Julio Garcia De Freitas ◽

Jéssica Broseguini Loss ◽

Guilherme Peterle ◽

...

Keyword(s):

Drip Irrigation ◽

Test Bench ◽

Drip Line ◽

Small Particles ◽

Uniformity Coefficient ◽

Distribution Uniformity ◽

Set Up ◽

Irrigation Quality ◽

Continuous Use ◽

E Mail

DESEMPENHO DE EMISSORES APLICANDO RESÍDUOS FINOS DE ROCHAS ORNAMENTAIS CARLOS MAGNO MULINARIO POLONI1; GUSTAVO HADDAD SOUZA VIEIRA2; JOSÉ JÚLIO GARCIA DE FREITAS3; JÉSSICA BROSEGHINI LOSS4; GUILHERME PETERLE5 E PAOLA ALFONSA VIEIRA LO MONACO6 1Estudante de Agronomia, IFES campus Santa Teresa. Rod ES 080, km 93, São João de Petrópolis, Santa Teresa – ES. CEP 29.660-000. e-mail: [email protected]. Doutor, IFES campus Santa Teresa. Rod ES 080, km 93, São João de Petrópolis, Santa Teresa – ES. CEP 29.660-000. e-mail:[email protected]. Mestre, IFES campus Santa Teresa. Rod ES 080, km 93, São João de Petrópolis, Santa Teresa – ES. CEP 29.660-000. e-mail: [email protected] em Produção Vegetal, CCA-UFES, Alegre-ES. Rod ES 080, km 93, São João de Petrópolis, Santa Teresa – ES. CEP 29.660-000. e-mail: [email protected] de Agronomia, IFES campus Santa Teresa. Rod ES 080, km 93, São João de Petrópolis, Santa Teresa – ES. CEP 29.660-000. e-mail: [email protected]ª. Doutora, IFES campus Santa Teresa. Rod ES 080, km 93, São João de Petrópolis, Santa Teresa – ES. CEP 29.660-000. e-mail: [email protected]. 1 RESUMO Objetivou-se, com a realização deste trabalho, avaliar o desempenho de diferentes emissores de irrigação localizada, aplicando resíduos finos do beneficiamento de rochas ornamentais. O experimento foi realizado no Ifes Campus Santa Teresa e os tratamentos consistiram em cinco diferentes emissores, sendo eles: Tubo gotejador D5000 Flow Regulated Drip Line (G1); Tubo gotejador NaanDanJain (G2); Botão gotejador Irritec (G3); Microspray Amanco roxo (G4) e Microspray Amanco vermelho (G5). Montou-se uma bancada para os testes de vazões, composta de cinco calhas com 12 metros de comprimento cada, para coleta e recirculação da solução utilizada. Os emissores, espaçados a 0,40 m, foram avaliados em 0, 100, 200, 300 e 400 horas de uso contínuo, com quatro repetições. Foi caracterizada a solubilidade e a granulometria do resíduo. Avaliou-se a vazão (Q); o coeficiente de uniformidade de distribuição (CUD); o coeficiente variação de vazão (CVq) e a vazão relativa dos emissores (Qr). Ao final, os emissores G1 e G2 apresentaram os melhores desempenhos, seguidos pelos emissores G3, G5 e G4. Palavras-chave: Entupimento, irrigação localizada, qualidade, uniformidade. POLONI, C. M. M.; VIEIRA, G. H. S.; FREITAS, J. J. G.; LOSS, J. B.; PETERLE, G.; LO MONACO, P.A.V.EMITTERS PERFORMANCE IN APPLYING SMALL WASTES PARTICLES FROM ORNAMENTAL ROCKS 2 ABSTRACT This work aims to evaluate the performance of different drip irrigation emitters, applying small particles from ornamental rocks processing. The experiment was carried out at the Ifes Campus of Santa Teresa using five different emitters: D5000 Flow Regulated Drip Line (G1); NaanDanJain drip tube (G2); Irritec drip button (G3); Microspray Amanco purple (G4) and Microspray Amanco red (G5). A test bench was set up for the flow tests, composed of five gutters each one of them 12 meters in length, for collection and recirculation of the solution used. The emitters, distributed at every 0.40 m within the gutter, were evaluated for 0, 100, 200, 300 and 400 hours of continuous use, with four repetitions. The solubility and particle size of the waste were characterized. The flow rate (Q); the distribution uniformity coefficient (CUD); the coefficient of flow variation (CVq); and the relative flow of the emitters (Qr) were evaluated. In the end, the emitters G1 and G2 presented the best performances, followed by emitters G3, G5 and G4. Keywords: Clogging, drip irrigation, quality, uniformity.

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