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Crop coefficient and water requirement of prickly pear in the Agreste region of Alagoas state, Brazil AGRIAMBI
Divincula,Jesiele S.; Silva,Cinara B. da; Santos,Marcio A. L. dos; Santos,Daniella P. dos; Santos,Luan W. dos.
ABSTRACT Prickly pear cultivation has played an important role in the Brazilian livestock farming, being used as forage for animals in the Northeast region, especially during the drying season, because it is an excellent source of water. Thus, the objective of this study was to estimate the crop coefficient and water requirement of prickly pear in the Agreste region of Alagoas state, Brazil. Prickly pear crop evapotranspiration (ETc) was determined using five drainage lysimeters, made of polyethylene with dimensions of 0.35 x 0.40 m (side and depth). Four soil layers were separated and put into the lysimeters in the opposite sequence, in order to maintain it as close as possible to the initial soil structure. The reference evapotranspiration (ETo) was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Opuntia ficus-indica L.; Evapotranspiration; Lysimeters.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001200925
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Dual crop coefficient for the early-cycle soybean cultivar SoyTech 815 RR AGRIAMBI
Bariviera,Guilherme; Dallacort,Rivanildo; Freitas,Paulo S. L. de; Barbieri,Joao D.; Daniel,Diego F..
ABSTRACT The objective of this study was to determine the dual crop coefficient of an early-cycle soybean cultivar for the city of Tangará da Serra, MT, Brazil, using high-precision lysimeters. The method used was the dual crop coefficient (dual Kc) of FAO Bulletin 56, constitued by soil evaporation coefficient (Ke), determined by microlysimeters, and by basal crop coefficient (Kcb), determined by weighing lysimeters. Reference evapotranspiration (ETo) was calculated using the Penman-Monteith equation. Soybean sowing and harvesting were performed in the 2015/16 season with spacing of 0.45 m between rows. The reference evapotranspiration (ETo) estimated for the cultivation period was 267.06 mm; the crop evapotranspiration was 323.61 mm throughout its cycle....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max (L.) Merril; Water balance; Lysimeters; Microlysimeters.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000200075
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Effect of Soil Coverage on Dual Crop Coefficient of Maize in a Region of Mato Grosso, Brazil. Repositório Alice
ANDREA, M. C. da S.; VIEIRA, F. F.; DALLACORT, R.; BARBIERI, J. D.; FREITAS, P. S. L. de; TIEPPO, R. C.; ZOLIN, C. A.; KRAUSE, W.; DANIEL, D. F..
With the objective of determining maize?s specific water requirements in different soil cover conditions in a Cerrado region of Mato Grosso, Brazil, this study used the dual?s crop coefficient (Kc dual) approach, according to FAO methods. An experiment was carried out in 2016, with three treatments: without vegetation soil cover; soil cover of 4 t ha-1 and soil cover of 8 t ha-1 dry matter of brachiaria grass. The used methodology accounts for crop?s transpiration component (through its basal coefficient, Kcb) and soil evaporation component (through its coefficient, Ke), which were determined for initial, intermediate and final phases of crop development. Experiments were carried in lysimeters to determine crop?s evapotranspiration, and in microlysimeters...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cerrado; Milho; Zea Mays; Crop coefficient; Soil water; Evaporation; Lysimeters; Cerrado soils.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1110476
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Evapotranspiração e coeficiente de cultivo de cafeeiros adultos. Repositório Alice
LENA, B.P.; FLUMIGNAN, D.L.; FARIA, R.T..
O objetivo deste trabalho foi determinar a evapotranspiração (ET) de cafeeiros adultos, irrigados por aspersão e gotejamento, e não irrigados, bem como os coeficientes de cultivo (Kc) de cafeeiros sob os dois regimes hídricos. O experimento foi realizado em Londrina, PR, com cafeeiros da cultivar Iapar 59, com cinco e seis anos de idade, de setembro de 2006 a agosto de 2008. A evapotranspiração foi medida por cinco lisímetros de pesagem, dos quais dois irrigados por aspersão, um por gotejamento e os outros dois sem irrigação. A irrigação foi aplicada, em média, duas vezes por semana, para manter o solo com umidade próxima à de capacidade de campo. O coeficiente de cultivo foi determinado pela razão entre a ET das plantas dos tratamentos irrigados e a...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coffea arabica; Demanda hídrica; Lisímetros; Irrigação. water demand; Lysimeters; Irrigation..
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/908426
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Evapotranspiration of rose cultivated in protected environment AGRIAMBI
Oliveira,Eduardo C.; Carvalho,Jacinto de A.; Almeida,Elka F. A.; Rezende,Fátima C.; Santos,Bethania G. Dos; Mimura,Sônia N..
The objective of this study was to determine the evapotranspiration and crop coefficient for the cut rose (cv. Carola) cultivated in protected environment and the coefficient of small tank installed inside the greenhouse during the period of one year. Five rows of plants were planted with spacing of 1.20 m between rows and 0.20 m between plants. Each line consisted of five plots with five plants per plot. Plants of the second and fourth rows and of the second and fourth plots were installed in four drainage lysimeters with dimensions of 1.20 x 1.20 x 0.80 m. The plants of the remaining plots were considered as border plants. A drip irrigation system was used. An automatic weather station was installed in the greenhouse and the data were collected and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Floriculture; Irrigation; Lysimeters; Crop coefficient.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000300011
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Field water dynamics in integrated systems in the Brazilian. Repositório Alice
HUBNER, S.; GLATZLE, S.; GIESE, M.; ALMEIDA, R. G. de; ASCH, F..
Agroforestry systems were established as a viable option for Brazilian farmers in recent decades. Shading is expected to affect the system?s microclimate and thus it is likely to alter water fluxes to the atmosphere via evapotranspiration. In this study we measured the evapotranspiration (ET) with micro-lysimeters in four different treatments as a proxy for different land use systems at EMBRAPA Beef Cattle, the Brazilian Agricultural Research Corporation, located in Campo Grande-MS, Brasil. The four treatments are: Integrated systems with rows of Eucalypt (Eucalyptus urograndis) trees (ICLF), integrated systems without Eucalypt trees (ICL), continuous pasture (CP) and native Cerrado (Savannah) vegetation. In the ICLF and ICL plots Bracchiaria brizantha was...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Brazilian savannah; Evapotranspiration; Agroforestry; Microclimate; Lysimeters; Bracchiaria brizantha; Eucalyptus.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080519
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Growth and yield of sugarcane irrigated with brackish water and leaching fractions AGRIAMBI
Lira,Raquele M. de; Silva,Ênio F. de F. e; Simões Neto,Djalma E.; Santos Júnior,José A.; Lima,Breno L. de C.; Silva,Jucicléia S. da.
ABSTRACT The objective was to evaluate the growth and yield of sugarcane irrigated with brackish water and leaching fractions. A completely randomized experimental design was used, in a 5 x 2 factorial scheme, with four replicates. The treatments consisted of five irrigation water salinity levels (0.5, 2.0, 3.5, 5.0 and 6.5 dS m-1) and two leaching fractions (0 and 0.17), corresponding to 100 and 120% of the crop evapotranspiration. The irrigation management was performed daily. Irrigation water salinity levels were obtained by adding NaCl and CaCl2 to the public-supply water, in order to obtain a molar ratio between Na:Ca of 1:1. The following measurements were taken: height and stem diameter; number of tillers; number of leaves and leaf area with monthly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum spp.; Salt management; Irrigation; Lysimeters.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300170
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Impacts of the application of swine wastewater in percolate and in soil cultivated with soybean REA
Maggi,Cacea F.; Freitas,Paulo S. L. de; Sampaio,Silvio C.; Dieter,Jonathan.
The aim of this study was to evaluate the possible impacts caused in the soil and in the percolate in lysimeters of drainage with application of different rates of swine wastewater (SW) during the cycle of soybean culture and to assess the productivity of it. The experiment was conducted at the Agricultural Engineering Experimental Center of UNIOESTE. The soil was classified as typical Distroferric Red Latosol. There were twenty-four drainage lysimeters in the area in which the soybean was cultivated, cultivar CD 214. Four SW depths (0; 100; 200 and 300 m³ ha-1) were applied to the soil seven days before the sowing in a single application combined with two mineral fertilizations in the sowing (with and without recommended fertilization during sowing), and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lysimeters; Effluent soil pollution.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000200007
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Leaching of nitrogen, potassium, cacium and magnesium in a sandy soil cultivated with sugarcane. Repositório Alice
OLIVEIRA, M.W. de; TRIVELIN, P.C.O.; BOARETTO, A.E.; MURAOKA, T.; MORTATTI, J..
A lysimeter experiment was carried out with sugarcane aiming to evaluate the leaching of nitrogen derived from either urea (15N) or the soil/sugarcane crop residues. The leaching of K+, Ca2+, and Mg2+ was also evaluated. The experiment was a factorial 2x4. The influencing factors were: firstly, the differential addition of two kinds of sugarcane remains to the soil, simulating conditions of cane- plantation renewal after the cane crop harvest, with and without previous straw removal by burning; secondly, four doses of N: 0, 30, 60, and 90 kg ha-1. During the experimental period the total volume of water received by the sugarcane-soil system was 2,015 mm, with 1,255 mm as precipitation and 760 mm as irrigation. The loss of N by leaching from the fertilizer...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Fertilizers; Mineral nutrients; Soil transport processes; Lysimeters.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/107417
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Leaching of nitrogen, potassium, calcium and magnesium in a sandy soil cultivated with sugarcane PAB
Oliveira,Mauro Wagner de; Trivelin,Paulo Cesar Ocheuze; Boaretto,Antônio Enedi; Muraoka,Taskashi; Mortatti,Jeferson.
A lysimeter experiment was carried out with sugarcane aiming to evaluate the leaching of nitrogen derived from either urea (15N) or the soil/sugarcane crop residues. The leaching of K+, Ca2+, and Mg2+ was also evaluated. The experiment was a factorial 2x4. The influencing factors were: firstly, the differential addition of two kinds of sugarcane remains to the soil, simulating conditions of cane- plantation renewal after the cane crop harvest, with and without previous straw removal by burning; secondly, four doses of N: 0, 30, 60, and 90 kg ha-1. During the experimental period the total volume of water received by the sugarcane-soil system was 2,015 mm, with 1,255 mm as precipitation and 760 mm as irrigation. The loss of N by leaching from the fertilizer...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fertilizers; Mineral nutrients; Soil transport processes; Lysimeters.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000600016
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Lixiviación de potasio, contenidos nutrimentales en suelo y alfalfa en respuesta a dosis de vinaza. Colegio de Postgraduados
Flores Rodríguez, Patricia.
Bajo condiciones de invernadero y con base a la concentración de potasio (K+) en la caracterización química de la vinaza, se evaluó el efecto de diferentes dosis (0, 250 y 500 kg ha-1 de K+) sobre el suelo, en columnas de cloruro de polivinilo (pvc), empleando lisímetros de succión a dos profundidades (23 y 46 cm) y muestras al final de la columna (75 cm). En lixiviados se evaluó la concentración de K, el efecto sobre pH y conductividad eléctrica (CE), como cultivo indicador se uso alfalfa (Medicago sativa), efectuándose dos cortes, en un periodo de 120 días y una aplicación de vinaza al inicio del experimento y otra después del primer corte. En muestras de plantas las variables fueron materia seca, NT, B, Ca, Cu, Fe, K, Mg, Mn, Na, P, Zn y NO3 en suelo...
Palavras-chave: Medicago sativa; Lisímetros; Conductividad eléctrica; PH; Lysimeters; Electrical conductivity (EC); Maestría; Hidrociencias.
Ano: 2010 URL: http://hdl.handle.net/10521/116
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Lixiviación de potasio, contenidos nutrimentales en suelo y alfalfa en respuesta a dosis de vinaza. Colegio de Postgraduados
Flores Rodríguez, Patricia.
Bajo condiciones de invernadero y con base a la concentración de potasio (K+) en la caracterización química de la vinaza, se evaluó el efecto de diferentes dosis (0, 250 y 500 kg ha-1 de K+) sobre el suelo, en columnas de cloruro de polivinilo (pvc), empleando lisímetros de succión a dos profundidades (23 y 46 cm) y muestras al final de la columna (75 cm). En lixiviados se evaluó la concentración de K, el efecto sobre pH y conductividad eléctrica (CE), como cultivo indicador se uso alfalfa (Medicago sativa), efectuándose dos cortes, en un periodo de 120 días y una aplicación de vinaza al inicio del experimento y otra después del primer corte. En muestras de plantas las variables fueron materia seca, NT, B, Ca, Cu, Fe, K, Mg, Mn, Na, P, Zn y NO3 en suelo...
Palavras-chave: Medicago sativa; Lisímetros; Conductividad eléctrica; PH; Lysimeters; Electrical conductivity (EC); Maestría; Hidrociencias.
Ano: 2010 URL: http://hdl.handle.net/10521/116
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Protótipo de um lisímetro de pesagem para determinação do requerimento de água das culturas. Repositório Alice
GOMIDE, R. L.; OLIVEIRA, C.S.G.de; FACCIOLI, G.G..
1992
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Lisimetro; Sensibilidade; Estatica; Automacao; Extensometria eletrica; Lysimeters; Automation.
Ano: 1992 URL: http://www.alice.cnptia.embrapa.br/handle/doc/478832
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Stem heat balance method to estimate transpiration of young orange and mango plants AGRIAMBI
Vellame,Lucas M.; Coelho Filho,Maurício A.; Paz,Vital P. S.; Coelho,Eugênio F..
The present study had as its main objective the evaluation of the heat balance method in young orange and mango plants under protected environment. The work was carried out at Embrapa Cassava and Tropical Fruits, Cruz das Almas, BA. Later on, estimates of sap flow were conducted for two mango plants cultivated in pots of 15 and 50 L installed on weighting platforms of 45 and 140 kg; sap flow was determined in three orange plants, two of which were also installed on weighing platforms. The values of sap flow were compared to the transpiration measured by lysimeters at integrated intervals of 1, 2, 4 and 24 h. The heat balance method showed good precision for estimating daily transpiration (R² = 0.95 and R² = 0.90), accompaning the availability of energy in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sap flow; Lysimeters; Citrus; Water stress.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662010000600005
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Test of a microlysimeter for measurement of soil evaporation REA
Flumignan,Danilton L.; Faria,Rogério T. de; Lena,Bruno P..
Quantifying soil evaporation is required on studies of soil water balance and applications aiming to improve water use efficiency by crops. The performance of a microlysimeter (ML) to measure soil evaporation under irrigation and non-irrigation was evaluated. The MLs were constructed using PVC tubes, with dimensions of 100 mm inner diameter, 150 mm depth and 2.5 mm wall thickness. Four MLs were uniformly distributed on the soil surface of two weighing lysimeters conducted under bare soil, previously installed at Iapar, in Londrina, PR, Brazil. The lysimeters had 1.4 m width, 1.9 m length and 1.3 m depth and were conducted with and without irrigation. Evaporation measurements by MLs (E ML) were compared with measurements by lysimeters (E L) during four...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water management; Water balance; Lysimeters; Soil water.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000100009
Registros recuperados: 15
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