scholarly journals Determination of evapotranspiration and crop coefficient for cauliflower at Paranánorthwest region

2021 ◽  
Vol 17 (5) ◽  
pp. 79-86
Author(s):  
André Felipe Barion Alves Andrean ◽  
Roberto Rezende ◽  
Vinícius Villa e Vila ◽  
Lucas Henrique Maldonado da Silva ◽  
Gustavo Soares Wenneck
Keyword(s):  
Water Consumption ◽  
Irrigation Management ◽  
Crop Coefficient ◽  
Intermediate Stage ◽  
State University ◽  
Local Data ◽  
Local Conditions ◽  
Essential Information ◽  
Initial Stage ◽  
Northwestern Region

Evapotranspiration and the estimation of crop coefficient (Kc) are essential information for irrigation management, contributing to increase the water use efficiency and optimizing resources, mainly using local data. This study aimed to determine the water consumption and the crop coefficient of cauliflower (Barcelona hybrid) in the northwestern region of Paraná. The experiment was conducted in a greenhouse at the Technical Irrigation Center belonging to the State University of Maringá, in Maringá - PR. The crop evapotranspiration was determined using constant water table lysimeters, and the reference evapotranspiration was estimated by the Penman-Monteith method (FAO), using climatological data collected in an automatic meteorological station. The cultivation was carried out from April to July. The total water consumption by the cauliflower was 215.11 mm, a higher value than that available in the FAO recommendations. The crop coefficient (Kc) recommended values for local conditions are 0.74 for the initial stage, 1.86 for the intermediate stage, and 1.50 for the final stage.

scholarly journals INFLUÊNCIA DA COBERTURA MORTA NA EVAPOTRANSPIRAÇÃO, COEFICIENTE DE CULTIVO E EFICIÊNCIA DE USO DE ÁGUA DO MILHO CULTIVADO EM CERRADO

Irriga ◽  
2018 ◽  
Vol 21 (2) ◽  
pp. 352
Author(s):  
HIPÓLITO MURGA-ORRILLO ◽  
WELLINGTON FARIAS ARAUJO ◽  
CARLOS ABANTO RODRIGUEZ ◽  
RICARDO MANUEL BARDALES LOZANO ◽  
ROBERTO TADASHI SAKAZAKI ◽  
...  
Keyword(s):  
Zea Mays ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Consumption ◽  
Irrigation Management ◽  
Crop Coefficient ◽  
Ground Cover ◽  
Bare Soil ◽  
Crop Cycle ◽  
Use Efficiency

INFLUÊNCIA DA COBERTURA MORTA NA EVAPOTRANSPIRAÇÃO, COEFICIENTE DE CULTIVO E EFICIÊNCIA DE USO DE ÁGUA DO MILHO CULTIVADO EM CERRADO HIPÓLITO MURGA-ORRILLO1; WELLINGTON FARIAS ARAÚJO2; CARLOS ABANTO-RODRIGUEZ3; ROBERTO TADASHI SAKAZAKI4; RICARDO MANUEL BARDALES-LOZANO5 E ANA ROSA POLO-VARGAS6 1Engenheiro Agrônomo, Prof. Auxiliar, Universidad Nacional Autónoma de Chota, (UNACH), Jr. Gregorio Malca Nº 875- Campus Colpa Matara, Chota, Perú. [email protected] Agrônomo, Prof. Dr. Associado da UFRR/CCA, Boa Vista, RR. [email protected] Florestal, Investigador no Instituto de Investigaciones de la Amazonía Peruana, Carretera Federico Basadre, Km 12,400, Yarinacocha, Ucayali, Perú. [email protected] Agrônomo, Doutorando na UFRR/CCA, Boa Vista, RR. [email protected] Agrônomo, Doutorando na UFRR/Bionorte, Boa Vista, RR. [email protected] Agrônoma, Graduada na Universidad Nacional de Cajamarca, (UNC), Av. Atahualpa Nº 1050- Carretera Cajamarca-Baños del Inca, Cajamarca, Perú. [email protected]  1 RESUMOA irrigação consome grande quantidade de água, sendo importante um adequado manejo da cultura para minimizar esse consumo, maximizando a produção. No intuito de obter informações para o manejo da irrigação, objetivou-se com o presente trabalho determinar a evapotranspiração da cultura (ETc), o coeficiente de cultivo (Kc) e a eficiência do uso de água (EUAg) da cultura de milho, em solo com e sem cobertura, durante os diferentes estádios de desenvolvimento, utilizando lisímetros de drenagem. O experimento foi conduzido no campus Cauamé da Universidade Federal de Roraima, entre 19/04/2014 e 07/08/2014, em Boa Vista, RR. A evapotranspiração de referência (ETo) foi estimada pelo método de Penman-Monteith FAO. Os resultados da ETc do milho, durante o ciclo da cultura, em solo sem e com cobertura foram de 421,5 e 351,0 mm, respectivamente. As médias diárias de ETc foram de 4,1 mm dia-1 para solo sem cobertura e 3,4 mm dia-1 para solo com cobertura. A cobertura do solo propiciou valores diferentes de Kc's para o milho, nos mesmos estádios, em comparação aos Kc’s do solo descoberto. Para o solo descoberto, os Kc’s observados para os estádios fenológicos I, II, III, e IV, foram de 0,40; 0,84; 1,59 e 0,81, respectivamente. Já para solo com cobertura, os Kc’s pelos mesmos estádios em menção foram 0,28; 0,64; 1,49 e 0,48, respectivamente. A EUAg para solo com cobertura foi 1,77 kg m-3 e para solo sem cobertura foi 1,65 kg m-3. Estes resultados mostram que a cobertura morta no solo influenciou no consumo hídrico do milho durante todo seu ciclo. Palavras-chave: Zea mays. Irrigação. Solo coberto. Consumo hídrico.  MURGA-ORRILLO, H.; ARAÚJO, W. F.; ABANTO-RODRIGUEZ C.; SAKAZAKI, R. T.; BARDALES-LOZANO R. M.; POLO-VARGAS, A. R.MULCH INFLUENCE ON EVAPOTRANSPIRATION, CROP COEFFICIENT AND WATER USE EFFICIENCY OF CORN GROWN IN THE SAVANNAH   2 ABSTRACTIrrigation consumes large amounts of water, and minimizing consumption and maximizing the production are  important to a proper crop management . In order to obtain information for irrigation management, the aim of the present study was to determine evapotranspiration (ETc),  crop coefficient (Kc) and  water use efficiency (WUE) of maize grown in soil with and without cover, during the various stages of development, using drainage lysimeters. The experiment was conducted in Cauamé campus of the Federal University of Roraima, from 19/04/2014 to 08/07/2014, in Boa Vista, RR. The reference evapotranspiration (ETo) was estimated by the Penman-Monteith method. The results of the corn ETc during the crop cycle in soil with and without coverage were 421.5 and 351.0 mm, respectively. The daily average of ETc were 4.1 mm day-1 for bare soil and 3.4 mm day-1 for soil with cover. The ground cover led to different values of Kc's for corn in the same stages as compared to Kc's from the bare ground. For bare soil, the Kc's observed for the phenological stages I, II, III, and IV were 0.40; 0.84; 1.59 and 0.81, respectively. As for covered soil, the Kc's in the same stadiums mentioned were 0.28; 0.64; 1.49 and 0.48, respectively. The WUE to soil with cover was 1.77 kg m-3 and ground without cover was 1.65 kg m-3. These results show that  soil mulching influenceS maize water consumption throughout its cycle. Keywords: Zea mays. Irrigation. Ground covered. Water consumption.

scholarly journals Evapotranspiration and crop coefficient of drip irrigated watermelon in Piaui coastline, Brazil

2012 ◽  
Vol 32 (3) ◽  
pp. 582-590 ◽  
Author(s):  
Edson A. Bastos ◽  
Cláudio R. Silva ◽  
Braz H. N. Rodrigues ◽  
Aderson S. Andrade Jr. ◽  
Lívia M. M. Ibiapina
Keyword(s):  
Citrullus Lanatus ◽  
Crop Coefficient ◽  
Intermediate Stage ◽  
Development Stage ◽  
Climatic Data ◽  
Mean Values ◽  
Initial Stage ◽  
Crop Development ◽  
Crop Cycle ◽  
Electronic Sensors

The knowledge of the evapotranspiration (ETc) and crop coefficient (Kc) is fundamental to plan and to manage the irrigation of any crop. The aim of this study was to determine the daily and hourly evapotranspiration of drip irrigated watermelon (Citrullus Lanatus, var. Crimson Sweet) and crop coefficient (Kc) in each crop development phase. The experiment was carried out in an experimental area of 1.27 ha of Embrapa Mid-North, localized in Parnaíba (02°54'S, 41°47'W and 46 m above of sea), State of Piauí, Brazil, from September to November, 2006. Electronic weighing lysimeters of 1.5 m x 1.5 m wide and long and 1.0 m deep were used to obtain the evapotranspiration. The plants were drip irrigated with a lateral row per plant row and drippers spaced 0.5 m from each other. The reference evapotranspiration (ETo) was estimated using the Penman-Monteith equation from the climatic data obtained by electronic sensors. The total evapotranspiration during the watermelon crop cycle cultivated in the state of Piauí was 233.87 mm, with mean values of 3.7 mm day-1, minimum of 1.18 and maximum of 8.14 mm day-1. The Kc of the drip irrigated watermelon was 0.18 in the initial stage of crop growth; 0.18 to 1.3, in crop development stage; 1.3 in the intermediate stage and 0.43 in the final stage.

scholarly journals WATER DEMAND, CROP COEFFICIENT AND UNCOUPLING FACTOR OF COWPEA IN THE EASTERN AMAZON

2017 ◽  
Vol 30 (1) ◽  
pp. 190-200 ◽  
Author(s):  
VIVIAN DIELLY DA SILVA FARIAS ◽  
◽  
MARCUS JOSÉ ALVES DE LIMA ◽  
HILDO GIUSEPPE GARCIA CALDAS NUNES ◽  
DENIS DE PINHO SOUSA ◽  
...  
Keyword(s):  
Water Demand ◽  
Irrigation Management ◽  
Gaussian Model ◽  
Crop Coefficient ◽  
Climatic Conditions ◽  
Degree Days ◽  
Local Conditions ◽  
Area Index ◽  
Crop Coefficients ◽  
Accumulated Degree Days

ABSTRACT Cowpea has great socioeconomic importance in the northeastern part of Pará state. However, in order to provide suitable irrigation management during the dry period this region requires solid information regarding water demand by regional crops. This research aims to determine the water demand, the crop coefficient (Kc) and the uncoupling factor during the different development stages of cowpea in the northeast of Pará. The crop evapotranspiration (ETc) was measured by drainage lysimeters. This information was coupled to the reference evapotranspiration (ETo) to obtain the crop coefficients, which were used to adjust the model function of accumulated degree-days and the leaf area index (LAI). The uncoupling factor was estimated to indicate the factors that control evapotranspiration. The ETc values reached a cumulative total of 267.73 mm ± 10.21 mm during the cowpea cycle. The average value of the uncoupling factor was 0.66. This indicates that the cowpea crop does not fully uncouple from the atmosphere underneath the climatic conditions in northeast Pará. The cowpea Kc values presented averages of 0.8, 1.4 and 0.8 in the vegetative phase, reproductive phase and final stage, respectively. The Gaussian model showed an excellent fit for the estimation of Kc values based on accumulated degree days and the LAI. These amounts differ from others found in the literature. Therefore, it reinforces the necessity for an assessment of crop coefficients under local conditions and for the employment of more precise methods.

scholarly journals INFORMAÇÕES PARA O MANEJO DA IRRIGAÇÃO DA COUVE DE BRUXELAS (Brassíca oleracea var. Gemmifera) CULTIVADA EM AMBIENTE PROTEGIDO

Irriga ◽  
2015 ◽  
Vol 20 (4) ◽  
pp. 615-629 ◽  
Author(s):  
José Geanini Peres ◽  
Leandro Marcussi ◽  
Claudinei Fonseca Souza ◽  
Norberto Antonio Lavorenti
Keyword(s):  
Standard Model ◽  
Brassica Oleracea ◽  
Water Consumption ◽  
Final Stage ◽  
Reference Evapotranspiration ◽  
Intermediate Stage ◽  
Brussels Sprouts ◽  
Class A ◽  
Initial Stage ◽  
Crop Coefficients

INFORMAÇÕES PARA O MANEJO DA IRRIGAÇÃO DA COUVE DE BRUXELAS (Brassíca oleracea var. Gemmifera) CULTIVADA EM AMBIENTE PROTEGIDO  JOSÉ GEANINI PERES1; LEANDRO MARCUSSI2; CLAUDINEI FONSECA SOUZA3 E NORBERTO ANTONIO LAVORENTI4 1Prof. Associado do Departamento de Recursos Naturais e Proteção Ambiental, CCA-UFSCar, Araras-SP, CP 153, CEP 13600-970. [email protected] Agrônomo, CCA-UFSCar, Araras-SP, CP 153, CEP 13600-970. [email protected]. Adjunto do Departamento de Recursos Naturais e Proteção Ambiental, CCA-UFSCar, Araras-SP, CP 153, CEP 13600-970. [email protected]. Associado do Departamento de Tecnologia Agroindustrial e Socioeconomia Rural, CCA-UFSCar. Araras-SP, CP 153, CEP 13600-970. [email protected]  1 RESUMO Esta pesquisa teve como objetivos a determinação do consumo de água e dos coeficientes de cultura da couve de Bruxelas (Brassíca oleracea var. Gemmifera) para cultivo em estufa agrícola sob irrigação e também a calibração dos modelos agroclimáticos de Penman, Makkink, Hargreaves e do Tanque Classe A em relação ao modelo padrão FAO de Penman-Monteith. A pesquisa foi realizada em uma estufa agrícola instalada na área experimental do Centro de Ciências Agrárias da Universidade Federal de São Carlos, em Araras–SP. O solo típico da área experimental é um Latossolo vermelho-escuro, distrófico, de horizonte A moderado e de textura argilosa. A cultivar da couve de Bruxelas estudada foi o híbrido Jade Cross, que é considerado tolerante a temperaturas altas. Na irrigação do experimento foram utilizados tubos gotejadores de 16 mm de diâmetro nominal, com emissores espaçados de 25 cm e vazão unitária de 2,3 L.h-1 para uma pressão de serviço de 100 kPa. O consumo de água da couve de Bruxelas foi medido através de dois lísimetros de pesagem instalados dentro da estufa, enquanto a evapotranspiração de referência foi estimada pelos modelos agroclimáticos de Penman-Monteith, Penman, Hargreaves, Makkink e do Tanque Classe A. O consumo de água total e médio diário da couve de Bruxelas foi, respectivamente, de 543 mm e 3,2 mm.dia-1. Dentre os modelos agroclimáticos estudados, foi verificado que o modelo de Hargreaves pode substituir o modelo padrão FAO de Penman-Monteith na determinação da evapotranspiração de referência, quando não estiverem disponíveis as informações climáticas necessárias a sua aplicação. As durações determinadas para os estádios vegetativos da couve de Bruxelas foram as seguintes: estádio inicial 30 dias; estádio de desenvolvimento 30 dias, estádio intermediário 60 dias e estádio final 50 dias, perfazendo um ciclo vegetativo de 170 dias. Os coeficientes de cultura estimados pelo modelo padrão FAO de Penman-Monteith foram: 0,65 para o estádio inicial; 1,85 para o estádio intermediário e 0,80 para o estádio final. Palavras-chave: estufa agrícola, lisímetro de pesagem, evapotranspiração de referência.    PERES, J. G.; MARCUSSI, L.; SOUZA, C. F.; LAVORENTI, N. A.INFORMATION ON   IRRIGATION MANAGEMENT OF BRUSSEL SPROUTS (Brassica oleracea variety Gemmifera)  2 ABSTRACT The study aimed   to determine water consumption and crop coefficients of Brussels sprouts (Brassica oleracea var. Gemmifera)  for cultivation  in a greenhouse under irrigation, and the calibration of the models Penman, Makkink, Hargreaves and Tank class A in relation to the standard model FAO of Penman-Monteith.  The study was conducted in a greenhouse installed at the experimental farm of the Center of Agricultural Sciences, Federal University of São Carlos, Araras city/SP. The soil in the experimental area was a dystrophic, moderate A horizon, clayey texture dark-red Latosol.  The hybrid Jade Cross was the cultivar of Brussels sprouts, which   is considered tolerant to high temperatures.  Drip emitter pipes were 16 mm diameter,  25 cm-emitter spacing and  flow rate of 2.3 L.h-1 for 100 kPa working pressure . Water consumption of Brussels sprouts was measured by two weighing lysimeters installed inside the greenhouse, while the reference evapotranspiration was estimated by the agroclimatic models of Penman-Monteith, Penman, Hargreaves, Makkink and Class A tank. Total and mean daily water consumption of Brussels sprouts was 543 mm and 3.2 mm.day-1, respectively. Considering the  agroclimatic models, the Hargreaves model can replace the Penman-Monteith model to determine Reference evapotranspiration when climatic data   required   are  not available.    Duration of the crop development stages of Brussels sprouts were as follows: Initial stage, 30 days; developmental  stage, 30 days, intermediate stage, 60 days and final stage, 50 days, reaching 170 day-growing cycle.  The crop coefficients estimated by the FAO standard model of Penman-Monteith were as follows:  0.65 initial stage, 1.85 intermediate stage and 0.80 final stage. Keywords: greenhouse, weighing lysimeter, reference evapotranspiration.

scholarly journals CONSUMO HÍDRICO DO MANJERICÃO POR MEIO DE LISÍMETRO DE DRENAGEM

Irriga ◽  
2015 ◽  
Vol 20 (4) ◽  
pp. 745-761 ◽  
Author(s):  
PATRICIA ANGÉLICA ALVES MARQUES ◽  
Jefferson Vieira Jose ◽  
Hermes Soares Da Rocha ◽  
EUSÍMIO FELISBINO FRAGA JÚNIOR ◽  
DANIEL ALVES SOARES ◽  
...  
Keyword(s):  
Water Consumption ◽  
Vegetation Index ◽  
Irrigation Management ◽  
Crop Coefficient ◽  
Sao Paulo ◽  
Ocimum Basilicum ◽  
São Paulo ◽  
Crop Evapotranspiration ◽  
Mato Grosso ◽  
Climate Conditions

CONSUMO HÍDRICO DO MANJERICÃO POR MEIO DE LISÍMETRO DE DRENAGEM  PATRICIA ANGÉLICA ALVES MARQUES¹; JEFFERSON VIEIRA JOSÉ2; HERMES SOARES DA ROCHA3; EUSÍMIO FELISBINO FRAGA JÚNIOR4; DANIEL ALVES SOARES5 E SERGIO NASCIMENTO DUARTE¹ 1 Professor(a), Departamento de Engenharia de Biossistemas, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, [email protected], [email protected] Pós-doutorando, Departamento de Engenharia de Biossistemas, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, [email protected], Departamento de Engenharia de Biossistemas, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, [email protected] Professor Adjunto, Instituto de Ciências Agrárias - ICIAG, Universidade Federal de Uberlândia – UFU, Campus Monte Carmelo, Avenida Goiás, 2000, 38500-000 – Monte Carmelo, MG, [email protected] Professor, Universidade Estadual do Mato Grosso, Av. dos Ingás, 3001, 78555-000, Jardim Imperial, Sinop, MT, [email protected]  1 RESUMO A avaliação da necessidade hídrica e do coeficiente de cultura é de grande relevância para um adequado manejo da irrigação. No entanto, há carência de informações sobre a cultura do manjericão. Objetivou-se neste trabalho avaliar o consumo hídrico do manjericão e estimar o seu coeficiente de cultura (Kc), relacionando-o à soma de graus dia (GD) e ao índice de cobertura vegetal (IC). Foram utilizados três lisímetros de drenagem, sendo a contabilização da evapotranspiração da cultura (ETc), em mm d-1, realizada pelas entradas e saídas de água, e a evapotranspiração de referência (ETo), em mm d-1, estimada pelo método de Penman-Monteith, preconizado pelo manual FAO-56. O consumo hídrico da cultura foi de 70,91 mm, 103 mm e 187 mm, correspondendo a um valor médio 1,03; 1,84 e 3,07 mm d-1 nos períodos de cultivos I, II e III, respectivamente. Observaram-se variações nos valores de Kc decorrentes das condições climáticas e das fases fenológicas da cultura. Os valores máximos e mínimos dos Kc foram 0,37-0,23; 0,60-0,27; 1,00-0,38 e 1,15-0,82 para as fases fenológicas I, II, III e IV, respectivamente. A estimativa do Kc em função do GD e do IC foram altamente significativas para a cultura nos três períodos de cultivos. Palavras-chave: coeficiente da cultura, Ocimum basilicum, evapotranspiração da cultura  MARQUES, P.A.A.; JOSÉ, J.V.; ROCHA, H.S.; FRAGA JR, E.F.;SOARES, D.A.; DUARTE, S.N.WATER CONSUMPTION OF BASIL USING DRAINAGE LYSIMETER  2 ABSTRACT Evaluation of water requirement and crop coefficient is of great importance for an appropriate irrigation management.  However, there has been lack of information  on   Basil crop.  The aim of this study was to evaluate water consumption of the basil crop and  estimate its crop coefficient (Kc), relating it to the sum of degree days (DD) and the vegetation index (VI).  A total of three drainage lysimeters were used, crop evapotranspiration (Etc) in mm d-1 was determined by inputs and outputs of water; reference evapotranspiration (ETo) in mm d-1 was estimated by the Penman-Monteith method, recommended by FAO-56. Water consumption of the crop was 70.91 mm, 103 mm and 187 mm, which corresponds to  mean values of 1.03; 1.84 and 3.07 mm d-1  in the cultivation periods I, II and III, respectively.  Variations in Kc values were observed as a result of the climate conditions and  phonological stages of the crop.  Maximum and minimum Kc values were  0.37-0.23; 0.60-0.27; 1.00-0.38 and  1.15-0.82 for the I, II, III and IV phonological stages , respectively .  The estimate of Kc as a function of DD and VI was highly significant for the crop in the three cultivation periods. Keywords: crop coefficient. Ocimum basilicum, crop evapotranspiration. 

scholarly journals Dual Crop Coefficient Approach in Vitis vinifera L. cv. LOUREIRO

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2062
Author(s):  
Simão P. Silva ◽  
M. Isabel Valín ◽  
Susana Mendes ◽  
Claúdio Araujo-Paredes ◽  
Javier J. Cancela
Keyword(s):  
Vitis Vinifera ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Irrigation Schedule ◽  
Irrigation Management ◽  
Crop Coefficient ◽  
Vitis Vinifera L ◽  
Local Conditions ◽  
Evaporation Coefficient

Vineyard irrigation management in temperate zones requires knowledge of the crop water requirements, especially in the context of climate change. The main objective of this work was to estimate the crop evapotranspiration (ETc) of Vitis vinifera cv. Loureiro for local conditions, applying the dual crop coefficient approach. The study was carried out in a vineyard during two growing seasons (2019–2020). Three irrigation treatments, full irrigation (FI), deficit irrigation (DI), and rainfed (R), were considered. The ETc was estimated using the SIMDualKc model, which performs the soil water balance with the dual Kc approach. This balance was performed by calculating the basal coefficients for the grapevine (Kcb crop) and the active soil ground cover (Kcb gcover), which represent the transpiration component of ETc and the soil evaporation coefficient (Ke). The model was calibrated and validated by comparing the simulated soil water content (SWC) with the soil water content data measured with frequency domain reflectometry (FDR). A suitable adjustment between the simulated and observed SWC was obtained for the 2019 R strategy when the model was calibrated. As for the vine crop, the best fit was obtained for Kcb full ini = 0.33, Kcb full mid = 0.684, and Kcb full end = 0.54. In this sense, the irrigation schedule must adjust these coefficients to local conditions to achieve economically and environmentally sustainable production.

scholarly journals DETERMINAÇÃO DO COEFICIENTE DE CULTIVO PARA A CULTURA DO RABANETE ATRAVÉS DE LISIMETRIA DE DRENAGEM

Irriga ◽  
2018 ◽  
Vol 22 (1) ◽  
pp. 194-203 ◽  
Author(s):  
Elvis Da Silva Alves ◽  
Dayane Farias Lima ◽  
José Adeilson Santos Barreto ◽  
Daniella Pereira dos Santos ◽  
Márcio Aurélio Lins dos Santos
Keyword(s):  
Water Consumption ◽  
Irrigation Management ◽  
Crop Evapotranspiration ◽  
Local Conditions ◽  
Stage Of Development ◽  
Experimental Area ◽  
Crop Water Consumption ◽  
Crop Coefficients ◽  
The City ◽  
E Mail

DETERMINAÇÃO DO COEFICIENTE DE CULTIVO PARA A CULTURA DO RABANETE ATRAVÉS DE LISIMETRIA DE DRENAGEM  ELVIS DA SILVA ALVES1; DAYANE FARIAS LIMA2; JOSÉ ADEILSON SANTOS BARRETO3; DANIELLA PEREIRA DOS SANTOS4 E MÁRCIO AURÉLIO LINS DOS SANTOS5 [1] Eng. Agrônomo, Doutorando em Engenharia Agrícola UFV/Viçosa – MG, e-mail: [email protected] Eng. Agrônoma, Mestranda em Engenharia Agrícola UFRPE/Recife – PE, e-mail: [email protected] Eng. Agrônomo, UFAL/Campus Arapiraca – AL, e-mail: [email protected] Eng. Agrônoma, Doutoranda em Engenharia Agrícola UFRPE/Recife – PE, e-mail: [email protected] Eng. Agrônomo, Professor UFAL/Campus Arapiraca – AL, e-mail: [email protected]  1        RESUMO O coeficiente de cultivo (Kc) está diretamente ligado as características fenológicas e fisiológicas das culturas. O grande problema em manejar a irrigação pelo método em que o relaciona com a Evapotranspiração de referência (ET0) está na obtenção de valores de Kc que sejam condizentes com as condições da localidade do cultivo. Apesar dos lisímetros de pesagem serem mais confiáveis, lisímetros de drenagem quando bem manejados permitem a obtenção de resultados confiáveis da evapotranspiração da cultura (ETc), que em razão com a ET0 resulta no Kc. Com isso, este trabalho teve como objetivo monitorar o consumo hídrico da cultura do rabanete para determinação dos coeficientes de cultivo no município de Arapiraca – AL, utilizando lisimetria de drenagem. O trabalho foi conduzido na área experimental do Campus de Arapiraca da Universidade Federal de Alagoas, onde foram instalados três lisímetros de drenagem em uma área experimental com dimensões de 5,00 x 2,00 m de comprimento e largura, respectivamente. A ETc foi determinada pelo método do balanço hídrico, e a ET0 pelo método de Penman Monteith-FAO. O monitoramento do consumo de água da cultura do rabanete para as condições locais da cidade de Arapiraca pode ser realizado de forma confiável através da lisimetria de drenagem. Os coeficientes de cultivo (Kc) do rabanete para Arapiraca determinados através deste trabalho foram de 0,45; 0,55; 0,95 e 0,65, para os estádios I, II, III e IV respectivamente. O estádio de desenvolvimento responsável pelo maior consumo hídrico do rabanete foi estádio III, com consumo de 15 mm. A evapotranspiração da cultura do rabanete durante todo o ciclo foi de 39 mm. Palavras-chave: Manejo de irrigação, evapotranspiração, consumo hídrico.  ALVES. E. S.; LIMA, D. F.; BARRETO, J. A. S.; SANTOS, D. P.; SANTOS, M. A. L.DETERMINATION OF CULTIVATION COEFFICIENT TO RADISH CULTURE USING DRAINAGE LYSIMETRY     2      ABSTRACT The cultivation coefficient (Kc) is directly connected to phenological and physiological characteristics of cultures. The major problem in managing the irrigation method that relates it to ET0 is in getting Kc values that are consistent with the conditions of the location of cultivation. Though weighing lysimeters are more reliable, drainage lysimeters when well managed allow the obtention of reliable results of crop evapotranspiration (ETc), which, in ration with  ET0 results in Kc. Therefore, this study aimed to monitor the radish crop water consumption for determining crop coefficients in the city of Arapiraca - AL, using drainage lysimeters. The work was conducted in the experimental area of Arapiraca Campus of the Federal University of Alagoas, where three drainage lysimeters were installed in an experimental area with dimensions of 5.00 x 2.00 m in length and width, respectively. The ETc was determined by the water balance method, and the ET0 Penman Monteith-FAO. The monitoring of water consumption of the radish culture for the local conditions of Arapiraca can be carried out reliably through drainage lysimetry. Crop coefficients (Kc) of Radish for Arapiraca determined by this study were 0.45; 0.55; 0.95 and 0.65, for stages I, II, III and IV respectively. The stage of development responsible for higher water consumption by radish was stage III, with consumption of 15 mm. The radish crop evapotranspiration throughout the cycle was 39 mm. Keywords: Irrigation management, evapotranspiration, water consumption.

scholarly journals EVAPOTRANSPIRAÇÃO E COEFICIENTE DE CULTIVO DO FEIJÃO-CAUPI NO VALE DO GURGUÉIA, PIAUÍ

Irriga ◽  
2008 ◽  
Vol 13 (2) ◽  
pp. 182-190 ◽  
Author(s):  
Edson Alves Bastos ◽  
Valber Mendes Ferreira ◽  
Cláudio Ricardo da Silva ◽  
Aderson Soares de Andrade Júnior
Keyword(s):  
Vigna Unguiculata ◽  
Water Demand ◽  
Irrigation Management ◽  
Crop Coefficient ◽  
Development Stage ◽  
Climatic Data ◽  
Initial Stage ◽  
Crop Development ◽  
Culture Cycle ◽  
Weighing Lysimeter

EVAPOTRANSPIRAÇÃO E COEFICIENTE DE CULTIVO DO FEIJÃO-CAUPI NO VALE DO GURGUÉIA, PIAUÍ  Edson Alves Bastos1;Valber Mendes Ferreira2; Cláudio Ricardo da Silva2; Aderson Soares de Andrade Júnior11 Embrapa Meio-Norte, [email protected] Universidade Federal do Piauí  1 RESUMO A determinação dos valores do coeficiente de cultivo (Kc), durante o ciclo de desenvolvimento, é fundamental para se obter as necessidades hídricas de uma cultura. O presente trabalho teve por objetivo determinar a evapotranspiração e o Kc do feijão-caupi (Vigna unguiculata L. Walp.), variedade BR-17 Gurguéia, durante os diferentes estádios de desenvolvimento, utilizando um lisímetro de pesagem eletrônico. O experimento foi conduzido no município de Alvorada do Gurguéia, localizado no Vale do Gurguéia, PI, durante o período de agosto a outubro de 2005. A evapotranspiração de referência foi estimada pelo método de Penman-Monteith com base nos dados meteorológicos obtidos por uma estação agrometeorológica automática. Os resultados mostraram que a ETc foi de 288,5 mm para todo o ciclo da cultura, correspondente a um valor médio de 4,1 mm dia-1. O estádio fenológico de maior demanda hídrica foi o reprodutivo, com 5,4 mm dia-1 e os valores de Kc foram de: 0,8, no estádio inicial;0,8 a 1,1, no estádio de crescimento;1,1 a 1,4 no estádio reprodutivo e de1,4 a 0,3 no estádio final. UNITERMOS: Lisímetro de pesagem, manejo de irrigação, consumo hídrico, Kc, Vigna unguiculata.  BASTOS, E.B.; FERREIRA, V.M.; SILVA, C. R. da; ANDRADE JÚNIOR, A.S. de. COWPEA EVAPOTRANSPIRATION AND CROP COEFFICIENT  IN THEGURGUEIAVALLEY,PIAUI STATE,BRAZIL  2 ABSTRACT The determination of crop coefficient (Kc) values is essential to obtain crop water demand throughout its development stage. The present work aimed to determine cowpea (Vigna unguiculata L. Walp. BR-17 Gurgueia variety) crop evapotranspiration (ETc) and Kc values during the crop development, using an electronic weighing lysimeter. The experiment was carried out in Alvorada do Gurgueia, located in theGurgueiaValley. The reference evapotranspiration (ETo) was estimated by Penman-Monteith method with climatic data obtained from an automatic weather station installed in the area. The results showed that the ETc was288.5 mm for the entire culture cycle, corresponding to4.1 mm day ˉ¹. The highest water demand occurred at the reproductive phonological stage (an average of5.4 mm day ˉ¹). Kc values were: 0.8 at the initial stage, 0.8 to 1.1 at the crop development stage, 1.1 to 1.4 at the reproductive stage and 1.4 to 0.3 at the end of the cycle.KEY WORDS: weighing lysimeter, irrigation management, water consumption, Kc, Vigna unguiculata.

scholarly journals Estimatation of evapotranspiration and crop coefficient of melon cultivated in protected environment

2017 ◽  
Vol 21 (11) ◽  
pp. 758-762 ◽  
Author(s):  
Cláudia S. Lozano ◽  
Roberto Rezende ◽  
Paulo S. L. de Freitas ◽  
Tiago L. Hachmann ◽  
Fernando A. S. Santos ◽  
...  
Keyword(s):  
Water Consumption ◽  
Crop Coefficient ◽  
Initial Growth ◽  
State University ◽  
Total Water ◽  
Phenological Stages ◽  
Weather Information ◽  
Total Water Consumption ◽  
Intermediate Phases ◽  
Crop Coefficients

ABSTRACT The objective of this work was to determine the water consumption and the crop coefficient of melon in a protected environment. The experiment was conducted in a greenhouse at the Technical Center of Irrigation of the State University of Maringá, in Maringá, PR. The melon hybrid used was Sunrise and the irrigations were performed daily by drip irrigation. Crop water requirement was quantified based on its evapotranspiration directly measured through constant water table lysimeters. Weather information was collected in an automatic weather station, installed inside the protected environment, which allowed to calculate the reference evapotranspiration by the Penman-Monteith method. The total water consumption of the melon crop was 295 mm, reaching maximum crop evapotranspiration of 5.16 mm d-1. The phenological stages were shorter in the initial, growth and intermediate phases, compared with the data from FAO. The determined crop coefficients were 0.87, 1.15 and 0.64 for the initial, intermediate and final stages, respectively

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