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| Registros recuperados: 54 | |
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| SILVA, D. J.. |
| Introdução; Aspectos gerais da nutrição: nitrogênio, fósforo, potássio, cálcio, magnésio, enxofre, boro, cobre, ferro, manganês, zinco, molibdênio, cloro; Avaliação do estado nutricional; Amostragem e análise de solo; Amostragem e análise de planta; Calagem; Adubação: adubação de plantio, adubação de crescimento; adubação de produção; Irrigação e fertirrigação. |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Videira; Nutrição mineral; Adubação de plantio; Uva; Solo; Nutrição; Calagem; Adubação; Irrigação; Fertirrigação; Grapes; Plant nutrition; Irrigation; Fertigation; Nitrogen. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1082017 |
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| Scalco,Myriane Stella; Alvarenga,Livia Alves; Guimarães,Rubens José; Dominghetti,Anderson Willian; Colombo,Alberto; Assis,Gleice Aparecida; Abreu,Giselle Figueiredo. |
| O objetivo deste trabalho foi avaliar os efeitos da irrigação sobre as concentrações foliares de P e Zn e sobre a produtividade e o crescimento do cafeeiro (Coffea arabica), cultivado em plantio tradicional e adensado. Utilizou-se o delineamento experimental de blocos ao acaso, em arranjo de parcelas subdivididas, com quatro repetições. As parcelas corresponderam às densidades de plantio (3.333 e 10.000 plantas ha-1), e as subparcelas corresponderam às lâminas d'água, aplicadas por quatro manejos de irrigação: início da irrigação, quando a tensão d´água no solo à profundidade de 0,25 m atingia valores próximos a 20 ou 60 kPa; turno fixo de irrigação (três vezes por semana), de acordo com o balanço hídrico climatológico; e testemunha sem irrigação. Em 2009,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Densidade de plantio; Estado nutricional; Fertirrigação; Interação entre nutrientes; Coffea arabica; Planting density; Nutritional status; Fertigation; Nutrient interaction. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000200095 |
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| Silva,Davi José; Bassoi,Luís Henrique; Rocha,Marlon Gomes da; Silva,Alexsandro Oliveira da; Deon,Magnus Dall’Igna. |
| ABSTRACT Viticulture is an activity of great social and economic importance in the lower-middle region of the São Francisco River valley in northeastern Brazil. In this region, the fertility of soils under vineyards is generally poor. To assess the effects of organic and nitrogen fertilization on chemical properties and nitrate concentrations in an Argissolo Vermelho-Amarelo (Typic Plinthustalf), a field experiment was carried out in Petrolina, Pernambuco, on Syrah grapevines. Treatments consisted of two rates of organic fertilizer (0 and 30 m3 ha-1) and five N rates (0, 10, 20, 40, and 80 kg ha-1), in a randomized block design arranged in split plots, with five replications. The organic fertilizer levels represented the main plots and the N levels, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertigation; Soil solution; Carbon; Micronutrients; Vitis vinifera. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100503 |
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| Rebouças Neto,Mário de O.; Azevedo,Benito M. de; Viana,Thales V. de A.; Mesquita,José B. R. de; Carvalho,Marco A. R. de; Carvalho,Lilian C. C. de. |
| ABSTRACT The tomato crop plays an important environmental, economic and even social role, especially for creating employment and income. The present work aims to evaluate the effects of potassium (K) drip fertigation and of conventional K fertilization on the tomato crop quality. The experiment was conducted under field conditions, in the period between August 2011 and December 2011, in Fortaleza, CE, Brazil. The experimental design was in randomized blocks in a factorial arrangement and the treatments corresponded to doses (D1 = 200, D2 = 400 and D3 = 800 kg K2O ha-1) and K fertilizing methods (F1 - Fertigation and F2 - Conventional fertilization), plus an additional control (without K fertilization) for each fertilizing method, with four replicates. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Fertigation; KCl; Postharvest. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001000913 |
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| Oliveira,Francisco de A. de; Alves,Rita de C.; Bezerra,Francisco M. S.; Lima,Luan A.; Medeiros,Ana S. de; Silva,Nicolly K. C.. |
| ABSTRACT The split-root technique was used as a strategy to reduce saline stress on pepper. A completely randomized design with six treatments and four replicates was used. The treatments consisted of six saline water application strategies (T1 - salinized nutrient solution (S1 = 1.4 dS m-1) during the whole cycle; T2 - salinized nutrient solution (S2 = 4.5 dS m-1) throughout the cycle, T3 - S1 and S2 throughout the cycle, using two emitters and without splitting the root system, T4 - S1 and S2, using two emitters and splitting the root system by a plastic film, T5 - S1 and S2, using two emitters and splitting the root system, alternating the solutions every 15 days, T6 - S1 and S2, using two emitters and without splitting the root system, alternating the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum L.; Saline water; Fertigation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000800519 |
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| Sampaio,Pedro R. F.; Rodrigues,Paulo H. V.; Duarte,Sergio N.; Sousa Neto,Osvaldo N. de; Nascimento,Jéssica G.; Piedade,Sônia M. de S.. |
| ABSTRACT The practice of using different photo-selective nets, associated with the technique of fertigation, represents a new agrotechnological concept that aims to promote specific physiological responses for growth and production, which are regulated by light. The aims of the study were to evaluate the effect of photo-selective nets and potassium concentrations in the fertigation solution on the horticultural performance of Costus lasius. The study was conducted at the Universidade de São Paulo, ESALQ, Piracicaba, SP, Brazil. Three experiments were carried out separately to evaluate five potassium concentrations in the fertigation solution (40, 80, 120, 160 and 200 mg L-1) under three colours of photo-selective nets (red, blue and black) in a randomized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ornamental flowers; Potted flowers; Fertigation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300143 |
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| Pereira,Pâmela A. M.; Sampaio,Silvio C.; Reis,Ralpho R. dos; Rosa,Danielle M.; Correa,Marcus M.. |
| ABSTRACT In the long run, swine wastewater can provide benefits to the soil-plant relationship, when its use is planned and the potential environmental impacts are monitored. The objective of this study was to investigate the effects of continuous application of swine wastewater, associated with mineral fertilization, after six years of management in no-tillage and crop rotation (14 production cycles), on the chemical conditions of the soil and the corn crop. The doses of wastewater were 0, 100, 200, 300 m3 ha-1 during the cycle. The effects of the association between mineral fertilization at sowing and swine wastewater were evaluated simultaneously. Swine wastewater at the dose of 100 m3 ha-1 promoted availability and absorption of P, K+, Mg2+ and Zn2+... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertigation; Water reuse; Swine waste. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100049 |
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| Szekut,Flavio D.; Azevedo,Carlos A. V. de; Boas,Marcio A. V.; Zuculotto,Thiago. |
| ABSTRACT The operation of drip lateral lines is affected by the topography of the irrigated area and represent, depending on the type of water applied, changes in the discharge characteristics of the emitters. The research had as objective to evaluate the hydraulic performance of built-in labyrinth drippers, non-pressure compensating, with different waters and slopes of the lateral lines. The experiment was carried out on a test bench and consisted of a randomized block design with split-plots: first factor with four types of water, representing the plots: clean water, water with fertilizers, cassava starch wastewater and poultry slaughterhouse wastewater; second factor with slopes of the lateral line, constituting the sub-plots: upslope, level and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertigation; Shewhart’s control charts; Labyrinth drippers. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001200813 |
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| Barbosa,Eduardo A. A.; Matsura,Edson E.; Santos,Leonardo N. S. dos; Nazário,Aline A.; Gonçalves,Ivo Z.; Feitosa,Daniel R. C.. |
| ABSTRACT Using domestic sewage to irrigate and supply nutrients to plants is a sustainable practice; however, due to the physical and chemical properties of the domestic sewage, soil attributes and quality may be changed with its application. The aim of this study was to evaluate soil quality after two cycles of sugarcane irrigated with treated domestic sewage and surface reservoir water via subsurface drip irrigation, with and without nutritional supplementation by fertigation, and a non-irrigated control with top-dressing fertilization. Soil quality was established by applying the methodology proposed by Karlen & Stott. Physical, chemical and microbiological indicators were selected to compose the basic soil functions used to determine the quality... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil functions; Water reuse; Subsurface drip; Fertigation; Soil acidification. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000200137 |
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| Fernandes,Carlos N. V.; Azevedo,Benito M. de; Camargo,Débora C.; Dias,Chrislene N.; Rebouças Neto,Mario de O.; Costa,Fellype R. B.. |
| ABSTRACT Aiming to evaluate the effect of potassium (K) doses applied by the conventional method and fertigation in zucchini (Cucurbita pepo L.), a field experiment was conducted in Fortaleza, CE, Brazil. The statistical design was a randomized block, with four replicates, in a 4 x 2 factorial scheme, which corresponded to four doses of K (0, 75, 150 and 300 kg K2O ha-1) and two fertilization methods (conventional and fertigation). The analyzed variables were: fruit mass (FM), number of fruits (NF), fruit length (FL), fruit diameter (FD), pulp thickness (PT), soluble solids (SS), yield (Y), water use efficiency (WUE) and potassium use efficiency (KUE), besides an economic analysis using the net present value (NPV), internal rate of return (IRR) and payback... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucurbita pepo L.; KCl; Fertigation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000700643 |
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| Lindolfo,Marcelo Morita; Matos,Gilson Sérgio Bastos de; Pereira,Wendel Valter da Silveira; Fernandes,Antonio Rodrigues. |
| Abstract Due to the increasing national and international demand, the cultivation of açaí palm trees (Euterpe oleracea Mart.) has expanded to upland areas in Brazil. Most of these areas present low natural soil fertility, in which boron (B) is one of the most limiting nutrients. This study aimed to evaluate the productivity of fresh fruits of fertigated açaí trees submitted to doses of B. The study was carried out in Tomé-Açu, northeastern Pará, Brazil. The experimental design consisted of randomized blocks with four treatments: control and addition of 20, 40 and 60 g of B clump-1. After 17 months, bunches of fresh fruits were collected and the production per hectare was estimated. An economic analysis was carried out considering the costs of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Euterpe oleracea Mart.; Doses of boron; Fertigation; Northeastern Pará. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000203001 |
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| Miranda,Fabio Rodrigues de; Silva,Valsérgio Barros da; Santos,Francisco Sérgio Ribeiro dos; Rossetti,Adroaldo Guimarães; Silva,Christiana de Fatima Bruce da. |
| The objective of this work was to evaluate yield and average fruit weight of strawberry cultivars Albion, Camarosa, Festival and Oso Grande, in two closed hydroponic systems (gutters and grow bags), using coconut fibre as substrate. The experimental design was of randomised blocks, divided into strips, with five replications. The hydroponic systems did not differ significantly as to yield, with advantages, such as savings in water and fertilizer and reduced environmental impact, over open systems. The most productive cultivar was Festival, followed by Oso Grande, with average yields of 6.99 kg m-2 and 5.56 kg m-2 respectively. The cultivars with the greatest fruit weight were Oso Grande and Albion, having averages of 11.8 and 11.1 g respectively, with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fragaria x ananassa; Hydroponics; Fertigation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000400022 |
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| Manzano,Juan; Palau,Carmen Virginia; Azevedo,Benito Moreira de; Bomfim,Guilherme Vieira do; Vasconcelos,Denise Vieira. |
| ABSTRACT Venturi-type chemigation injectors are widely used due to their advantages: they do not require electric power and are cheap to operate. However, they also generate considerable energy losses which affect the pressure in the system. The correct characterization of these systems requires pressures to be correctly set at the inlet, injector and outlet points in relation to main and injected solution flows. These analytical relationships, as described in the International Organization for Standardization’s standard ISO 15873:2002, can be obtained theoretically, although it is recommended that the manufacturer should determine the real behavior of the injector by operational tests. These relationships should also be provided graphically in the form of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemigation; Fertigation; Head losses; Nomography. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000200201 |
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| Registros recuperados: 54 | |
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