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| Oliveira,Fabricio C. de; Geisenhoff,Luciano O.; Almeida,Alexsandro C. dos S; Lima Junior,Joaquim A. de; Lavanholi,Rogério. |
| ABSTRACT This study aimed to analyze the economic feasibility of different irrigation systems in broccoli cropping, in Dourados - MS, Brazil. Initially, irrigation was performed using different systems (surface drip, subsurface drip, micro sprinkler, Santeno® and conventional sprinkler). Both yield of commercial inflorescence (CIY) and applied water depth (AWD) were determined during trial. Economic feasibility was analyzed through estimates of acquisition cost (AC), total annual cost (TAC), gross revenue (GR), net revenue (NR), benefit-cost rate (BCR), return rate (RR) and return time (RT). Subsurface drip irrigation was the most feasible in addition to using the second lowest AWD (170.3 mm) compared to the other systems. The values of CIY, AC, RR, BCR... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economic indicators; Vegetables; Irrigation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000300460 |
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| Geisenhoff,Luciano O.; Oliveira,Fabricio C. de; Biscaro,Guilherme A.; Almeida,Alexsandro C. dos S.; Schwerz,Francielli. |
| RESUMO Na agricultura sustentável, busca-se o sistema de irrigação que proporcione alta produtividade comercial com o mínimo de água aplicada. Assim, objetivou-se pelo presente estudo avaliar a produtividade do brócolis-de-cabeça irrigado por diferentes sistemas de irrigação. O delineamento experimental foi em blocos ao acaso, utilizando quatro repetições e cinco tratamentos que correspondem aos sistemas de irrigação: gotejamento superficial, gotejamento subsuperficial, microaspersão, Santeno® e aspersão convencional. A cultivar utilizada foi o brócolis-de-cabeça (Brassica oleracea var.italica, híbrido Lord Summer). Foram avaliados o diâmetro de inflorescência (DI), a produtividade comercial de inflorescência (PCI) e a produtividade da água (PA). O... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea; Produtividade da água e uniformidade de distribuição. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000500863 |
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| Geisenhoff,Luciano O.; Jordan,Rodrigo A.; Santos,Rodrigo C.; Oliveira,Fabricio C. de; Gomes,Eder P.. |
| ABSTRACT The integration of fish farming in intensive system and plant production, called "aquaponics" is practiced successfully in countries like the USA, Australia and Europe. In Brazil, this integration has attracted the attention of researchers and producers. In this context, the aim of this study was to evaluate the effect of two substrates (crushed stone number 3, CS III and flexible polyurethane foam, FPF) on the production of aquaponic lettuce, moreover, to show that the residual water from intensive tilapia production provides sufficient qualitative characteristics for competitive production of lettuce without adding commercial fertilizers. The treatment in which FPF was used provided higher concentrations of macro and micronutrients in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soilless cultivation; Water recirculation and aquaponics system. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000200291 |
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| Jordan,Rodrigo A.; Geisenhoff,Luciano O.; Oliveira,Fabricio C. de; Santos,Rodrigo C.; Martins,Elton A. S.. |
| ABSTRACT In the aquaponic system, the characteristics of the materials used as substrate directly affect plant development, because besides acting as a support base, they must present a surface to fix microorganisms, responsible for the conversion of nutrients into forms more easily available to plants. Thus, the objective of this study was to evaluate the effect of four growing substrates on the yield of lettuce grown in aquaponic system. The experimental design was randomized blocks with four treatments, which corresponded to the substrates, and six replicates. Plants were grown using the nutrient film technique (NFT) system. The substrates used in the experiment were: coconut shell fiber with crushed stone #3, expanded vermiculite, zeolite and phenolic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofilter; Biodigestion; Soilless cultivation; Intensive fish farming. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100027 |
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| Jordan,Rodrigo A.; Ribeiro,Evaldo F.; Oliveira,Fabricio C. de; Geisenhoff,Luciano O.; Martins,Elton A. S.. |
| ABSTRACT This study had as objective to evaluate the effect of the substrate on the yield of lettuce grown in aquaponic and hydroponic systems. The study was conducted at the Federal University of Grande Dourados, located in Dourados, MS. A randomized complete block design was used, with three treatments and 16 replicates. The cultivation systems were analyzed independently. The substrates analyzed were: coconut shell fiber, phenolic foam and expanded vermiculite. The plants were grown in two systems (aquaponic and hydroponic), using the NFT (Nutrient Film Technique) system. The crop used was lettuce cv. ‘Alcione’. The parameters analyzed were: crop yield and percentage of roots per plant. In addition, macronutrient contents were analyzed in the leaves.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Soilless cultivation; Coconut shell fiber; Tilapia. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000800525 |
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