scholarly journals Irrigation management of muskmelon with tensiometry

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Márcio José de Santana ◽  
Guilherme de Almeida Bocate ◽  
Murilo Augusto Sgobi ◽  
Stefany Silva de Souza ◽  
Taynara Tuany Borges Valeriano
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Irrigation System ◽  
Irrigation Management ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Stem Diameter ◽  
Soil Water Tension ◽  
Production And Consumption ◽  
Water Tension

The production and consumption of muskmelon have been increasing (MELO et al., 2014), thus, information on techniques for higher field productions are necessary. The experiment described in the present work was conducted in the IFTM, Uberaba, State of Minas Gerais, Brazil, aiming to evaluate the muskmelon yield under different soil water tensions. A randomized block experimental design was used with five treatments (soil water tensions of 10, 20, 30, 40 and 50 kPa) and four replications (plots of two rows of 14 plants). Two harvests were carried out and the fruit yield, stem diameter, number of fruits per plant and efficiency of water use were evaluated. Irrigation was performed with a drip irrigation system and managed with tensiometry. The cultivar Bonus n.2 was used with spacing of 1.0 x 0.6 m. The data of the variables were subjected to the F test and regression test. The treatments showed statistical differences in number of fruits per plant, fruit weight (fruit yield) and stem diameter. The highest fruit yield found was 1.36 kg fruit-1 and the highest water use efficiency was 4.08 g mm-1 with irrigation for a soil water tension of 10 kPa. The lowest fruit yield was found with irrigation for a soil water tension of 50 kPa.

scholarly journals CULTIVO DA BETERRABA SOB DIFERENTES TENSÕES DE ÁGUA NO SOLO

Irriga ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 220-235
Author(s):  
Jonathan Rocha Miranda ◽  
Geraldo Magela Pereira
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Drip Irrigation ◽  
Irrigation Management ◽  
Innovative Design ◽  
Soil Water Tension ◽  
Experimental Area ◽  
Engineering Department ◽  
Water Tension

CULTIVO DA BETERRABA SOB DIFERENTES TENSÕES DE ÁGUA NO SOLO     JONATHAN DA ROCHA MIRANDA¹ E GERALDO MAGELA PEREIRA²   1Doutorando em Engenharia Agrícola pela Universidade Federal de Lavras (UFLA) – Campus Universitário, Departamento de Engenharia, C.P. 3037 – CEP 37200-000, Lavras-MG, Brasil. [email protected]; ²Professor Titular da Universidade Federal de Lavras (UFLA) - Campus Universitário, Departamento de Engenharia, C.P. 3037- CEP 37200-000, Lavras-MG, Brasil. [email protected].     1 RESUMO   Objetivou-se com este estudo, avaliar o efeito de diferentes tensões de água no solo sobre a produção de beterraba, cultivada em ambiente protegido e irrigada por gotejamento, de forma a estabelecer critérios para o manejo adequado da irrigação. O experimento foi conduzido na área experimental do Departamento de Engenharia da Universidade Federal de Lavras, no período de fevereiro a maio de 2016. O delineamento experimental utilizado foi em blocos completos casualizados, com seis tratamentos e quatro repetições. Os tratamentos corresponderam as tensões da água no solo de 15; 25; 35; 45; 55 e 65 kPa. Conclui-se que para a obtenção de maior produtividade e eficiência no usa da água, as irrigações devem ser realizadas quando a tensão da água no solo estiver em torno de 15 kPa, a uma profundidade de 0,15 m.   Palavras-chave: Manejo de irrigação; Ambiente protegido; Sensor de Resistência Elétrica; Eficiência no Uso da Água.     MIRANDA, J.R; PEREIRA, G.M. BEET CULTIVATION UNDER DIFFERENT SOIL WATER TENSIONS     2 ABSTRACT   The objective of this study was to evaluate the effect of different soil water stresses on beet production, cultivated in a protected environment and irrigated by drip irrigation, to establish criteria for proper irrigation management. The experiment was conducted in the experimental area of the Engineering Department of the Federal University of Lavras (UFLA), from February to May 2016. The innovative design was a randomized complete block (DBC), with six treatments and four replications. The treatments consisted of six soil water tension stresses (15, 25, 35, 45, 55 and 65 kPa). From the results obtained, it was concluded that to achieve higher values of productivity and efficiency in the use of water, irrigations should be carried out when the water tension in the soil is around 15 kPa, to a depth of 0.15 m.   Keywords: Irrigation management; Protected environment; Watermark, Efficiency in Water Use.

scholarly journals Effects of Irrigation Regimes on Yield and Water Use by Sweetpotato

1990 ◽  
Vol 115 (5) ◽  
pp. 712-714 ◽  
Author(s):  
Doyle A. Smittle ◽  
Melvin R. Hall ◽  
James R. Stansell
Keyword(s):  
Water Stress ◽  
Soil Water ◽  
Water Use ◽  
Ipomoea Batatas ◽  
Regression Equations ◽  
Marketable Yield ◽  
Water Regimes ◽  
Soil Water Tension ◽  
Water Tension ◽  
Storage Root Development

Sweetpotatoes [Ipomoea batatas (L.) Lam cv. Georgia Jet] were grown on two soil types in drainage lysimeters under controlled soil water regimes during 1982 and 1983. Water regimes consisted of irrigating the sweetpotatoes throughout growth when soil water tension at 23 cm exceeded 25, 50, or 100 kPa or by allowing a 100-kPa water stress before root enlargement, during early root enlargement, or throughout root enlargement. Water use and marketable yields were greater when sweetpotatoes were grown on a Tifton loamy sand (fine loamy, siliceous, thermic, Plinthitic Paleudult) than when grown on a Bonifay sand (loamy, siliceous, thermic, Grossarenic, Plinthitic Paleudult). Water use, marketable yield, and yield of U.S. #1 grade roots generally decreased when soil water tensions exceeded 25 kPa before irrigation, although soil water stress of 100 kPa during storage root development did not significantly affect yield. Regression equations are provided to describe the relationships of water use to plant age and to compute daily evapotranspiration: pan evaporation ratios (crop factors) for sweetpotatoes irrigated at 25, 50, and 100 kPa of soil water tension.

scholarly journals Irrigation Regimes Affect Leaf Yield and Water Turnip Use by Mustard

HortScience ◽  
1992 ◽  
Vol 27 (4) ◽  
pp. 308-310 ◽  
Author(s):  
Doyle A. Smittle ◽  
W. Lamar Dickens ◽  
James R. Stansell ◽  
Eric Simonne
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Regression Equations ◽  
Pan Evaporation ◽  
Soil Water Tension ◽  
Irrigation Regimes ◽  
Leaf Yield ◽  
Daily Evapotranspiration ◽  
Daily Pan Evaporation ◽  
Water Tension

Turnip (Brassica rapa L.) and mustard (Brassica juncea L.) were grown in drainage lysimeters under controlled soil water regimes during 2 years. Irrigation regimes consisted of water applications when the soil water tension at a 10-cm depth exceeded 25,50, or 75 kPa throughout growth of the two crops on two soil types during spring and fall production seasons. Leaf yield and water use were highest when irrigation was applied at 25 kPa soil water tension. Regression equations are presented to describe the relationships of daily pan evaporation and water use to plant age, and to compute daily evapotranspiration: pan evaporation ratios (crop factors) during spring and fall production seasons.

scholarly journals Determination of soil water tension for irrigation management of sweet sorghum

2016 ◽  
Vol 37 (3) ◽  
pp. 1189
Author(s):  
Karen Marcelle de Jesus Silva ◽  
Ignacio Aspiazú ◽  
Arley Fiqueiredo Portugal ◽  
Renato Mendes de Oliveira ◽  
Polyanna Mara de Oliveira ◽  
...  
Keyword(s):  
Soil Water ◽  
Sweet Sorghum ◽  
Block Design ◽  
Irrigation Management ◽  
Soluble Solids ◽  
Water Retention Curve ◽  
Soil Water Retention Curve ◽  
Soil Water Retention ◽  
Soil Water Tension ◽  
Water Tension

Culturing of sweet sorghum is being considered as an excellent option for ethanol production, from an agronomical and industrial point of view. At present, information regarding the best soil water tension for beginning sweet sorghum irrigation is not available; hence, this study aimed to determine the adequate soil water tension under field conditions for beginning irrigation of four cultivars of sorghum. Two experiments were conducted at Nova Porteirinha, MG, in a randomized block design with sub-subdivided plots having four replications. Each experiment comprised six treatments of soil water tension (plots)-20, 40, 60, 80, 100, and 120 kPa-for resuming sweet sorghum irrigation, and four sweet sorghum cultivars (subplots)-BRS 508, BRS 509, BRS 511, and CMSXS647. After planting, the soil water level in the plots was elevated to field capacity (10 kPa), and then the treatments were applied. During treatment application, irrigation was resumed when the soil water tension reached the limit established in order to elevate the soil water tension to 10 kPa. The amount of water replaced during each irrigation was determined by generating a soil water retention curve for the experimental area. The following parameters were evaluated: green mass production, juice volume, soluble solids (Brix), and tons of Brix per hectare (TBH). The different soil water tensions and cultivars, agricultural year, and interaction between tension and year significantly affected (p ? 0.05) the characteristics evaluated, according to the F test. The agronomical characteristics of the evaluated cultivars showed linear relationship with water supply in the soil. According to TBH, irrigation of sweet sorghum needs to be performed when the soil tension reaches 20 kPa. The TBH values did not differ significantly among the four cultivars at the 5% significance level according to Tukey test.

scholarly journals TENSÃO DE ÁGUA NO SOLO PARA O REINÍCIO DA IRRIGAÇÃO DE MILHO VERDE NO SEMIÁRIDO

2018 ◽  
Vol 17 (2) ◽  
pp. 190
Author(s):  
IGNACIO ASPIAZÚ ◽  
FERNANDO GOMES DA SILVA ◽  
RENATO MENDES OLIVEIRA ◽  
KAREN MARCELLE DE JESUS SILVA ◽  
SILVÂNIO RODRIGUES DOS SANTOS ◽  
...  
Keyword(s):  
Zea Mays ◽  
Soil Water ◽  
Zea Mays L ◽  
Irrigation Management ◽  
Winter Season ◽  
Dry Mass ◽  
Area Index ◽  
Soil Water Tension ◽  
Yield Parameters ◽  
Water Tension

  RESUMO O objetivo deste trabalho foi determinar em campo a tensão de água do solo adequada para o reinício da irrigação do milho verde no semiárido. O experimento constou de seis valores de tensão matricial da água do solo (20 kPa, 40 kPa, 60 kPa, 80 kPa, 100 kPa e 120 kPa) testadas em uma cultivar de milho, o hibrido duplo AG 1051. O experimento foi instalado no período de inverno de 2013, nos meses de agosto a novembro, num delineamento experimental de blocos casualizados (DBC), com quatro repetições, conduzidos na fazenda experimental da Embrapa Milho e Sorgo em Nova Porteirinha, MG. Foram avaliadas as variáveis: produtividade de espigas sem palha (t ha-1), número de espigas totais e comerciais por hectare, comprimento de espigas com palha e sem palha e diâmetro de espigas comerciais. Dentre os resultados pode-se constatar que os maiores valores para as variáveis de morfologia e de produtividade foram obtidos quando a irrigação foi efetuada com tensão próxima de 50 kPa, tornando-a a tensão mais adequada para o uso racional da água no manejo da irrigação do milho verde.Palavras-chave: Zea mays L., déficit hídrico, manejo da irrigação, resistência elétrica. SOIL WATER TENSION FOR REWATERING GREEN CORN IN THE SEMIARID  ABSTRACT _ The objective of this work was to determine the adequate water tension for rewatering green corn at field conditions in the semiarid. The experiment consisted of six values of matric soil water tension (20 kPa, 40 kPa, 60 kPa, 80 kPa, 100 kPa and 120 kPa) and one maize cultivar, the double hybrid AG1051. The experiment was installed in the 2013 winter season, from August to November, in a randomized blocks design (DBC), with four replicates, and conducted at the experimental farm belonging to Embrapa Maize and Sorghum in Nova Porteirinha, MG. Morphological parameters were evaluated such as plant height, leaf area index and dry mass, and also the yield parameters such as weight of spikes with straw and without straw (t ha-1), number of total and commercial spikes per hectare, diameter of commercial spikes and length of commercial spikes with and without straw. The highest values for the morphology and productivity variables were obtained when irrigation was carried out with a tension close to 50 kPa, which proved to be the most suitable tension for the rational use of water in the irrigation management of green corn.Keywords: Zea mays L., water deficit, irrigation management, electrical resistance.

scholarly journals Irrigation Regimes Affect Yield and Water Use by Bell Pepper

1994 ◽  
Vol 119 (5) ◽  
pp. 936-939 ◽  
Author(s):  
Doyle A. Smittle ◽  
W. Lamar Dickens ◽  
James R. Stansell
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Bell Pepper ◽  
Regression Equations ◽  
Pan Evaporation ◽  
Growing Seasons ◽  
Soil Water Tension ◽  
Irrigation Regimes ◽  
Daily Evapotranspiration ◽  
Water Tension

`Keystone Resistant Giant' bell pepper (Capsicum annuum L.) was grown in drainage lysimeters under controlled soil water regimes during 1982, 1984, and 1985. Three irrigation regimes were imposed on bell pepper grown on two soil types during spring and fall growing seasons. Irrigation regimes consisted of applying water when the soil water tension at 10 cm exceeded 25, 50, or 75 kPa during crop growth. Yields and water use were greatest when irrigation was applied at 25 kPa. Regression equations are presented to describe the relationships of water use to plant age and to compute the ratios of daily evapotranspiration to pan evaporation (crop factors) for bell pepper grown under the three irrigation regimes.

scholarly journals Development and production of iceberg lettuce irrigated with magnetically treated water

Water SA ◽  
2021 ◽  
Vol 47 (4 October) ◽  
Author(s):  
Lis Tavares Ordones Lemos ◽  
Fábio Ponciano de Deus ◽  
Valter Carvalho de Andrade Júnior ◽  
Michael Silveira Thebaldi ◽  
Marcio Mesquita ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Dry Mass ◽  
Treated Water ◽  
Soil Water Tension ◽  
Iceberg Lettuce ◽  
Use Efficiency ◽  
Fresh And Dry Mass ◽  
Commercial Yield ◽  
Water Tension

Irrigated agriculture has become a concern, given the scarcity of freshwater. To reduce its water consumption, new techniques and technologies have been proposed. Based on this, the objective of this work was to evaluate the influence of different soil water tensions at initiation of irrigation with magnetically treated water, on ‘iceberg’ lettuce Lucy Brown (Lactuca Sativa L.) development and production. The experiment was conducted in a greenhouse, using a completely randomized factorial design, to evaluate two water types (magnetically treated water – MW and ordinary water – OW) and four soil water tensions at initiation of irrigation (T1 – 15 kPa, T2 – 25 kPa, T3 – 40 kPa and T4 – 70 kPa), with three replicates. Tensiometers were used to estimate soil water tension. The evaluated parameters were: aerial part fresh and dry total mass; commercial head fresh and dry mass, root fresh and dry mass; stem fresh and dry mass; stem length and diameter; percentage of leaves with tip burn, total and commercial yield; water use efficiency related to total and commercial yield; plant exposed area; and dry matter content. Despite achieving greater water use efficiency, the magnetic treatment may have hindered the removal of water from the soil by the crop, especially at increased soil water tension at initiation of irrigation.

scholarly journals Irrigation controller mechanically actuated by soil-water tension: II - Field evaluations

2017 ◽  
Vol 21 (5) ◽  
pp. 298-303
Author(s):  
Alexsandro C. S. Almeida ◽  
Tarlei A. Botrel ◽  
Steven R. Raine ◽  
Antonio P. de Camargo ◽  
Marinaldo F. Pinto ◽  
...  
Keyword(s):  
Soil Water ◽  
High Frequency ◽  
Root Zone ◽  
Irrigation System ◽  
Soil Surface ◽  
Field Evaluation ◽  
Water Source ◽  
Soil Water Tension ◽  
Water Tension ◽  
Hydraulic Valve

ABSTRACT In this study, a field evaluation of the performance of an irrigation controller mechanically actuated by soil-water tension (SWT) was performed. The controller employs a tensiometer used as a sensor of SWT to directly control a mechanically actuated hydraulic valve. Six controllers were installed in an orchard to control the irrigation for six rows of plants over 64 days. Each controller controlled the irrigation of one lateral drip line. The drip irrigation system was gravity-fed from a water source placed 7 m above the soil surface. The SWT and the pressure in each lateral line were measured to evaluate the performance of the controllers. All the controllers tested in the field autonomously initiated and terminated the irrigation during the evaluation. Irrigation events were initiated when values close to the set soil-tension values were reached and were terminated at lower soil-tension values. As the SWT in the root zone was maintained close to the setup threshold plus 20% tolerance for at least 90% of the evaluation period, the performance of the controllers was considered satisfactory. The proposed controller was shown to be functional and was operated effectively for an SWT range of up to 30 kPa, which is commonly encountered under high-frequency irrigation conditions.

scholarly journals Pigeonpea Yield and Water Use Efficiency: A Savior under Climate Change-Induced Water Stress

Agronomy ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 5
Author(s):  
Misheck Musokwa ◽  
Paramu Mafongoya
Keyword(s):  
Climate Change ◽  
Grain Yield ◽  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Smallholder Farmers ◽  
Block Design ◽  
Soil Water Tension ◽  
Use Efficiency ◽  
Water Tension

Frequent droughts have threatened the crop yields and livelihoods of many smallholder farmers in South Africa. Pigeonpea can be grown by farmers to mitigate the impacts of droughts caused by climate change. An experiment was conducted at Fountainhill Farm from January 2016 to December 2017. The trial examined grain yield in addition to water use efficiency (WUE) of pigeonpea intercropped with maize versus sole pigeonpea and maize. A randomized complete block design, replicated three times, was used. Soil water tension was measured at 20, 50, and 120 cm within plots. The highest and lowest soil water tension was recorded at 20 m and 120 m respectively. Combined biomass and grain yield were significantly different: pigeonpea + maize (5513 kg ha−1) > pigeonpea (3368 kg ha−1) > maize (2425 kg ha−1). A similar trend was observed for WUE and land equivalent ratio (LER), where pigeonpea + maize outperformed all sole cropping systems. The inclusion of pigeonpea in a traditional mono-cropping system is recommended for smallholder farmers due to greater WUE, LER and other associated benefits such as food, feed and soil fertility amelioration, and it can reduce the effects of droughts induced by climate change.

scholarly journals VIABILIDADE PRODUTIVA DA CULTURA DA BATATA SUBMETIDA A DIFERENTES TENSÕES DE AGUA NO SOLO

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 306
Author(s):  
Luciano Oliveira Geisenhoff ◽  
Geraldo Magela Pereira ◽  
Joaquim Alves Lima Junior ◽  
Rodrigo Otavio Rodrigues de Melo Souza ◽  
Ana Carla Ferreira Oliveira
Keyword(s):  
Solanum Tuberosum ◽  
Soil Water ◽  
Solanum Tuberosum L ◽  
Irrigation Management ◽  
Economic Feasibility ◽  
Dry Matter Content ◽  
Trickle Irrigation ◽  
Fresh Weight ◽  
Soil Water Tension ◽  
Water Tension

VIABILIDADE PRODUTIVA DA CULTURA DA BATATA SUBMETIDA A DIFERENTES TENSÕES DE AGUA NO SOLO LUCIANO OLIVEIRA GEISENHOFF1; GERALDO MAGELA PEREIRA2; JOAQUIM ALVES DE LIMA JUNIOR3; RODRIGO OTAVIO RODRIGUES DE MELO SOUZA4 E ANA CARLA FERREIRA DE OLIVEIRA5  1Engº Agrônomo, Prof. Doutor, Faculdade de Ciências Agrárias - FCA/Universidade Federal da Grande Dourados - UFGD/ Dourados – MS, Fone: (67) 3410-2412, [email protected] 2Engº Agrícola, Prof. Doutor, Departamento de Engenharia Agrícola-DEG/Universidade Federal de Lavras - UFLA/Lavras – MG, Fone: (35) 38291389, [email protected]º Agrônomo, Prof. Doutor, Universidade Federal Rural da Amazônia - UFRA/Campus Capanema – PA, Fone: (91) 98160-6563, [email protected]º Agrícola, Prof. Doutor, Universidade Federal Rural da Amazônia - UFRA/Campus Belém – PA, Fone: (91) 98193-0182, [email protected]º Agrônoma, Mestranda em Agronomia, Universidade Federal Rural da Amazônia - UFRA/Campus Belém – PA, Fone: (91) 98171-1538, [email protected]  1 RESUMO A irrigação da batata (Solanum tuberosum L.), como na maioria das olerícolas, além de ser um importante fator de produção, é o que mais favorece o aumento da produtividade, bem como, o aprimoramento da qualidade do produto. Desta forma, objetivou-se com o presente estudo avaliar a resposta da cultura da batata, cultivar Ágata, a diferentes tensões de água no solo, irrigada por gotejamento, visando estabelecer critérios para o manejo da irrigação na cultura da batata. O experimento foi conduzido em campo, em área experimental do Departamento de Engenharia da Universidade Federal de Lavras (UFLA), no período de julho a outubro de 2010. O delineamento experimental utilizado foi em blocos casualizados (DBC), compreendendo-se cinco tratamentos e quatro repetições. Os tratamentos constituíram-se de cinco tensões da água no solo, 15, 35, 55, 75 e 95 kPa. Para a obtenção dos maiores valores de: massa fresca total de tubérculos por planta, massa fresca média de tubérculos por planta, produtividade total de tubérculos, massa fresca de tubérculos comerciais por planta, produtividade de tubérculos comerciais, número de tubérculos comerciais por planta, associados a uma excelente classificação comercial, as irrigações devem ser realizadas quando a tensão de água no solo acusar o valor de 15 kPa, á uma profundidade de 0,15 m. O rendimento produtivo da cultura reduziu em função do aumento da tensão da água no solo, no intervalo entre 15 e 95 kPa. O teor de matéria seca de tubérculos apresentou resposta aos tratamentos, sendo que o valor máximo de 18,77% foi obtido com a tensão de 60 kPa.  Palavras-chaves: Solanum tuberosum L., Irrigação localizada, Manejo da irrigação.  GEISENHOFF, L. O.; PEREIRA, G. M.; LIMA JUNIOR, J. A.; SOUZA, R. O. R. M.; OLIVEIRA, A. C. F.VIABILITY PRODUCTION OF POTATO CROP UNDER SUBMITTED TO DIFFERENT SOIL WATER TENSION  2 ABSTRACT  The irrigation of potato ( Solanum tuberosum L.) , as in most vegetable crops, as well as being an important factor of production, is what most favors the increase of productivity as well as the improvement of product quality. Thus, objective with this study evaluate the response of the potato cultivar Agate, different strains of soil water, trickle irrigated, in order to establish criteria for irrigation management, as well estimating the economic feasibility of irrigation system in potato.The experiment was conducted in an open field in the experimental area of Department of Engineering, Federal University of Lavras (UFLA), during july-october 2010.The experimental design was randomized blocks (DBC), comprising up five treatments and four replicates.The treatments consisted of five soil water stress, 15, 35, 55, 75 and 95 kPa. It was concluded that to obtain higher values: total fresh weight of tubers per plant, mean fresh weight of tubers per plant, total yield of tubers, fresh weight of marketable tubers per plant, yield of marketable tubers, number of marketable tubers per plant, associated with an excellent commercial grading, irrigation should be done when the soil water tension acknowledge the value of 15 kPa at a depth of 0.15 m. The yield of crop yield declined linearly with increasing soil water tension in the range between 15 and 95 kPa. The dry matter content of tubers showed a quadratic response to treatments, and the maximum value of 18.77% was obtained with a tension of 60 kPa. Keywords: Solanum tuberosum L, Trickle irrigation, Irrigation management

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