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| Registros recuperados: 54 | |
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| Ferrarezi,Rhuanito Soranz; Bataglia,Ondino Cleante; Furlani,Pedro Roberto; Schammass,Eliana Aparecida. |
| For high technology seedling production systems, nutrition plays an important role, mainly the fertigation with iron chelates to prevent its deficiency. This study had the goal of searching for alternative iron sources with the same nutrient efficiency but lower cost in relation to nutrient solution total cost. An experiment was carried out in 56 cm³-conic-containers tilled with a pine bark/ vermiculite mixed substrate using Fe-DTPA, Fe-EDDHA, Fe-EDDHMA, Fe-EDTA, Fe-HEDTA, FeCl3, FeSO4, FeSO4+citric acid plus a control, and the rootstocks Swingle, Rangpur, Trifoliata and Cleopatra, in a randomized complete block design, with four replicates. Seedlings were evaluated for height, relative chlorophyll index, total and soluble iron leaf concentrations.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seedling production; Chelates; Fertigation; Economical analysis. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000500010 |
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| Da Silva Dias,Nildo; Dantas de Morais,Patricia Lígia; Abrantes Sarmento,José Darcio; Nogueira de Sousa Neto,Osvaldo; Palácio,Vilauba Sobreiro; de Freitas,Jair José Rabelo. |
| Abstract In Mossoró-RN, which is part of the semi-arid region of Brazil, a large part of the country’s melon production is concentrated, whose great potential is currently limited by water quality due to salt concentration. Therefore, the objective of this work was to investigate the use of saline nutritive solutions in the irrigation of greenhouse melon (Cucumis melo L. cv. Néctar) culture in coconut fiber. The experiment was carried out using a randomized block design with a 5 x 2 factorial arrangement, with four replications, where the treatments consisted of nutritive solutions with five salinity levels (1.25 - control, 1.43, 1.86; 2.96 and 4.86 dS m-1) and for two different times to evaluate fruit quality parameters (at harvest and after 12 days of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertigation; Post-harvest; Soilless cultivation; Storage; Substrate. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000400517 |
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| Brondani, Gilvano Ebling; Baccarin, Francisco José Benedini; Gonçalves, Antônio Natal; Almeida, Marcílio de. |
| The aim of this study was to evaluate the foliar nutrient content in Eucalyptus benthamii mini-stumps treated with different Zn and B concentrations during successive shoot collections. Shoots were collected from mini-stumps fertigated with nutrient solutions containing different concentrations of Zn and B (S1 – free of Zn and B; S2 – 0.5 mg L-1 Zn; S3 – 0.5 mg L-1 B; S4 – 0.5 mg L-1 Zn and B; S5 – 1.0 mg L-1 Zn and B; S6 – 2.0 mg L-1 Zn and B). Eight shoot collections from the clonal mini-garden were performed. For each shoot collection, the nutritional content of the leaf was determined (N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn). The experiment was conducted using a randomized design with a factorial arrangement (8x6) and a split plot in time and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.04-0 nutritive solution; Fertigation; Mini-cutting technique; Clonal mini-garden Produção de Mudas nutritive solution; Fertigation; Mini-cutting technique; Clonal mini-garden. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16827 |
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| Steidle Neto, Antonio José; Departamento de Engenharia Agrícola, Universidade Federal de Viçosa, Viçosa, Minas Gerais; Zolnier, Sérgio; Departamento de Engenharia Agrícola, Universidade Federal de Viçosa, Viçosa, Minas Gerais; Marouelli, Waldir Aparecido; Centro Nacional de Pesquisa de Hortaliças, Empresa Brasileira de Pesquisa Agropecuária, Brasília, Distrito Federal. |
| O objetivo deste trabalho foi avaliar a influência da transpiração do tomateiro na fração lixiviada e na condutividade elétrica (CE) da solução nutritiva percolada no substrato de areia, em cultivo realizado sob condições de casa-de-vegetação. Foram utilizadas duas técnicas de fertirrigação, sendo uma denominada de sistema de controle convencional e outra, de sistema de controle computadorizado. No sistema de controle convencional, a solução nutritiva foi aplicada em intervalos de tempo fixos entre eventos de fertirrigação. No outro sistema, a aplicação ocorreu de acordo com estimativas de transpiração que foram realizadas pelo algoritmo de controle do sistema computadorizado. Em dias nublados, a CE da solução nutritiva drenada diminuiu em ambos os... |
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Palavras-chave: 5.03.02.00-0 Lycopersicon esculentum; Hidroponia; Cultivo sem solo; Fertirrigação; Casa-de-vegetação Engenharia de Água e Solo Lycopersicon esculentum; Hydroponics; Soilless cultivation; Fertigation; Greenhouse. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3246 |
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| Andersen, Mathias. |
| The objective of this study was to evaluate effects of different irrigation and N fertilization regimes by gun irrigation and drip-fertigation on potato production, and subsequently optimize the supply of water and N fertilizer to the growth condition of the specific season and minimize nitrate leaching without compromising profits. Four replicate plots of each treatment with varying predefined and model-based (Daisy and Aquacrop crop model) irrigation and N fertilization levels was used in the study. Two experiments were conducted. In experiment-I, treatments consisted of one drip-fertigation system (IdsNds) and two gun irrigation systems (GIdsN120 and GIaN120) to display the differences on growth, yield and water use efficiency of potato. All treatments... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gun irrigation; Fertigation; Potato yield; Crop growth model; Denmark. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3154 |
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| Mathias Andersen. |
| The objective of this study was to evaluate effects of different irrigation and N fertilization regimes by gun irrigation and drip-fertigation on potato production, and subsequently optimize the supply of water and N fertilizer to the growth condition of the specific season and minimize nitrate leaching without compromising profits. Four replicate plots of each treatment with varying predefined and model-based (Daisy and Aquacrop crop model) irrigation and N fertilization levels was used in the study. Two experiments were conducted. In experiment-I, treatments consisted of one drip-fertigation system (IdsNds) and two gun irrigation systems (GIdsN120 and GIaN120) to display the differences on growth, yield and water use efficiency of potato. All treatments... |
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Palavras-chave: Gun irrigation; Fertigation; Potato yield; Crop growth model; Denmark. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3154 |
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| MANTOVANI,CIBELE; PRADO,RENATO M.; PIVETTA,KATHIA F.L.. |
| Abstract Phalaenopsis and Dendrobium do not grow and flower well with 100% ammonium (NH4-N); and there are detailed studies on the effects of nitrate (NO3-N) and ammonium ratios on the flowering, but no information about accumulation of other nutrients and the effects of ammonium toxicity on orchids. For this reason, two experiments were carried out with orchids: Phalaenopsis ‘Golden Peoker’ and Dendrobium ‘Valentine’. Six months after acclimatization the plants were transplanted to individual plastic vessels and the treatments consisted of five ratios (%) of nitrate / ammonium (0/100, 25/75, 50/50, 75/25, 100/0). The sources of NO3-N and NH4-N were calcium nitrate and ammonium sulfate, respectively. After 12 months treatment, when the plants were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutritional status; Fertigation; Orchidaceae; Ammonium toxicity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703423 |
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| Hippler,Franz Walter Rieger; Boaretto,Rodrigo Marcelli; Teixeira,Luiz Antonio Junqueira; Quaggio,José Antonio; Mattos-Jr,Dirceu de. |
| ABSTRACT This study aimed to evaluate the fertiliser sources and application methods of copper (Cu) in citrus trees during the first years of fruit production. Two experiments were set up in an orchard with 3-year-old sweet orange trees, which were applied with three sources of Cu (nitrate, sulfate or EDTA) either via fertigation (Experiment 1) or via foliar sprays (Experiment 2). Regardless of the fertiliser source, Cu application via fertigation was not efficacious to increase the micronutrient concentration in leaves and, consequently, did not affect fruit yield. Conversely, foliar application of Cu, either as nitrate or sulfate, increased this nutrient level in leaves but when applied as copper nitrate, visual phytotoxicity symptoms were verified in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Micronutrient; Nutritional status; Fertigation; Foliar application; Citriculture. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200365 |
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| Janisch,Djeimi Isabel; Andriolo,Jerônimo Luiz; Toso,Vinícius; Santos,Kamila Gabriele Ferreira dos; Souza,Jéssica Maronez de. |
| The objective of this research was to determine growth and dry matter partitioning among organs of strawberry stock plants under five Nitrogen concentrations in the nutrient solution and its effects on emission and growth of runner tips. The experiment was carried out under greenhouse conditions, from September 2010 to March 2011, in a soilless system with Oso Grande and Camino Real cultivars. Nitrogen concentrations of 5.12, 7.6, 10.12 (control), 12.62 and 15.12 mmol L-1 in the nutrient solution were studied in a 5x2 factorial randomised experimental design. All runner tips bearing at least one expanded leaf (patent requested) were collected weekly and counted during the growth period. The number of leaves, dry matter (DM) of leaves, crown and root,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fragaria x ananassa; Hydroponics; Propagation; Fertigation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000300012 |
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| Andriolo,Jerônimo Luiz; Madalóz,José Carlos Cazarotto; Godoi,Rodrigo dos Santos; Janisch,Djeimi Isabel; Barros,Cláudia Alessandra Peixoto de. |
| Chicory plants, cv. 'Amarelo' and 'Pão de Açúcar', were grown hydroponically under four NaCl concentrations in the nutrient solution to determine its tolerance to salinity. Sowing was made in rows placed 0.05m apart, on a 0.15m deep sand growing bed placed over fibber cement tiles. After emergence, plants were thinned to a plant density of 1,600plants m-2. A standard nutrient solution was used, with the main composition of, in mmol L-1, 13.5 NO3-; 2.5 NH4+; 1.5 H2PO4-; 1.5 SO4--; 7.5 Ca++; 10.0 K+ and 1.5 Mg++. The control (T1) was the standard nutrient solution, without addition of NaCl. Four salinity levels were compared, by adding 0.697 (T2), 1.627 (T3), 2.556 (T4) and 3.485 (T5)g L-1 of NaCl. The nutrient solution was delivered to plants four times a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichorium intybus; Fertigation; Nutrient solution; Salt tolerance. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000400038 |
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| Silva,Alexsandro Oliveira da; Silva,Davi José; Bassoi,Luis Henrique. |
| ABSTRACT In the semiarid region of Brazil the use of irrigation systems for applying fertilizers in horticulture is the primary means for incorporating nutrients in the soil. However, this technique still requires its use in wine vines to be assessed. In view of this, this study aimed to assess nitrate and potassium concentrations in soil fertigated with nitrogen and potassium fertilizers in 3 wine grape growing cycles. A field experiment was conducted with 'Syrah' wine grapes, in Petrolina, Pernambuco, Brazil; it assessed five nitrogen doses (0, 15, 30, 60 and 120 kg ha-1) and five K2O doses (0, 15, 30, 60 and 120 kg ha-1) applied by drip irrigation system with two emitters per plant, with a flow rate of 4 L h-1. The experimental design used was the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera L; Soil solution; Fertigation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000300305 |
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| Registros recuperados: 54 | |
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