Plant Growth Response Of Subirrigated Salvia 'vista Red' To Increasing Water Levels At Two Substrates

dc.creatorFerrarezi
dc.creatorRhuanito S.; van Iersel
dc.creatorMarc W.; Testezlaf
dc.creatorRoberto
dc.date2016
dc.dateabr-jun
dc.date2017-11-13T11:35:30Z
dc.date2017-11-13T11:35:30Z
dc.date.accessioned2018-03-29T05:49:39Z
dc.date.available2018-03-29T05:49:39Z
dc.identifierHorticultura Brasileira. Assoc Brasileira Horticultura, v. 34, p. 202 - 209, 2016.
dc.identifier0102-0536
dc.identifier1806-9991
dc.identifierWOS:000384803100009
dc.identifier10.1590/S0102-053620160000200009
dc.identifierhttp://www.scielo.br/scielo.php?pid=S0102-05362016000200202&script=sci_arttext
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/326655
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1363661
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionSubirrigation applies water and nutrients to the bottom of pots without wetting leaves, improving water use and reducing disease spread compared to overhead irrigation systems. However, water levels applied within the benches are often higher than required to promote capillary action, applying more water than needed and wasting pumping energy. The present study was conducted to evaluate the effect of different water levels on plant growth of subirrigated salvia (Salvia splendens) 'Vista Red'in two substrates. Five water levels (0.75, 1.5, 3.0, 4.5, and 6.0 cm) and two substrates {pine bark: sphagnum peat moss and peat: perlite (both 75%: 25% v/v)} were tested, with four replications. Substrate moisture was monitored by capacitance-type sensors connected to a multiplexer and data logger. Volumetric water content (VWC) was higher in peat: perlite (0.34 to 0.75 m(3)/m(3)) than pine bark: sphagnum peat moss (0.21 to 0.60 m(3)/m(3)) at all water levels. Higher water levels increased VWC in both substrates. The leaf chlorophyll index was 4% lower at the 6.0 cm compared to the other treatments in peat: perlite (p< 0.0001). Stomatal conductance decreased overtime; but increased with the increase in water levels in peat: perlite (p< 0.0001). Different water levels had no effect on leaf area, net photosynthesis, number of branches and leaves, and shoot dry weight (p> 0.05), an indication that the different water levels do not affect the plant growth. However, shoot plant height increased 13% in pine bark: sphagnum peat moss (p= 0.0096) and 17% in peat: perlite (p= 0.0335) as water levels increased. Water levels of 1.5 cm and higher can be recommended for pine bark: sphagnum peat moss or peat: perlite in subirrigation, applying water according to plant needs, optimizing plant growth and reducing the nutrient solution pumping costs compared to systems that apply higher water levels.
dc.description34
dc.description2
dc.description202
dc.description209
dc.descriptionCapes Foundation (Ministry of Education, Brazil) [BEX 1390/10-4]
dc.descriptionAmerican Floral Endowment
dc.descriptionUSDA-NIFA-SCRI award [2009-51181-05768]
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageEnglish
dc.publisherAssoc Brasileira Horticultura
dc.publisherCampinas
dc.relationHorticultura Brasileira
dc.rightsaberto
dc.sourceWOS
dc.subjectSalvia Splendens
dc.subjectSubirrigation
dc.subjectAutomation
dc.subjectCapacitance Sensors
dc.subjectIrrigation
dc.subjectWater Management
dc.titlePlant Growth Response Of Subirrigated Salvia 'vista Red' To Increasing Water Levels At Two Substrates
dc.typeArtículos de revistas


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