Search Results

You are looking at 1 - 9 of 9 items for :

  • "capillary irrigation" x
  • Refine by Access: All x
Clear All
Full access

Maycon Diego Ribeiro, Rhuanito Soranz Ferrarezi, and Roberto Testezlaf

We evaluated the performance and determined the efficiency parameters of an automated subirrigation system in a commercial greenhouse facility for clonal eucalyptus (Eucalyptus sp.) seedling production to improve subirrigation management practices. A methodology based on the mass balance of the irrigation system was established to determine the volumes of nutrient solution (NS) applied, drained, stored, evapotranspirated, and leaked in each subirrigation bench. The application, drainage, and NS dwell time in the 55-cm3 conic containers (0.125 m height × 0.03 m diameter) and the depth of NS reached inside the bench were also assessed. The values of application efficiency, irrigation efficiency and system transport (supply and drainage), and disposal losses of NS were estimated for each bench and inferred for the entire subirrigation system. The benches had average application and irrigation efficiency values of 0.84% and 98.38%, respectively. The system showed irrigation efficiency values of 27.59% and the sum lost by transport, leakings, and disposal in the water treatment plant of 72.41%. The continuous return of NS because of the high irrigation frequency contributed to this loss, resulting in 10,070 L of NS consumed by the plants and 26,430 L lost after 15 days of cultivation. Our results demonstrated that the system presented an adequate irrigation efficiency, but a low application efficiency caused by the constant return of NS because of the high irrigation frequency and the excess of losses from leaking and disposal of NS after 15 days of cultivation. Nevertheless, the system operated like a hydroponic system, which kept the containers partially immersed in the NS and did not use the full substrate container capacity to provide adequate moisture. This reduced the overall system irrigation and the substrate storage efficiencies, which needs to be improved by proper equipment design, operation, water and nutrients use efficiency, and management to achieve all the benefits that subirrigation possess.

Free access

Mohammed Z. Alam, Calvin Chong, Jennifer Llewellyn, and Glen P. Lumis

top and bottom (0.2 dS·m −1 or less). In contrast, under capillary irrigation with topdressed CRF, the EC was highest at the top and was reversed with overhead irrigation. Although the substrate EC in the containers was not measured in this study

Full access

Julie Guckenberger Price, Stephen A. Watts, Amy N. Wright, Robert W. Peters, and Jason T. Kirby

Natural, Atlanta]. Half (six) of the mini-roofs were also equipped with subsurface capillary irrigation (KISSS Below Flow Flat; Irrigation Water Technologies America, Longmont, CO). The irrigation system had emitters spaced 15.7 inches apart and the lines

Free access

Cody J. Stewart, S. Christopher Marble, Brian J. Pearson, and P. Christopher Wilson

and strategies in container production nurseries Envrion. Hort. 8 133 135 Goodwin, P.B. Murphy, M. Melville, P. Yiasoumi, W. 2003 Efficiency of water and nutrient use in containerized plants irrigated by overhead, drip or capillary irrigation Austral

Free access

Takafumi Kinoshita and Masaharu Masuda

Efficiency of water and nutrient use in containerized plants irrigated by over head, drip or capillary irrigation Aust. J. Exp. Agr. 43 189 194 Ho, L.C. Belda, R. Brown, M. Andrews, J. Adams, P. 1993 Uptake and transplant of calcium and the possible causes of

Free access

Carlos Vinicius Garcia Barreto, Rhuanito Soranz Ferrarezi, Flávio Bussmeyer Arruda, and Roberto Testezlaf

prototype tray, the “capillary irrigation equipment,” to apply subirrigation on citrus rootstock seedlings production. This tray consisted of a closed reservoir in the bottom connected to polyvinyl chloride (PVC) pipes where the containers were inserted. The

Free access

Takafumi Kinoshita and Masaharu Masuda

’ ‘Chico Grande’ tomatoes Amer. Soc. Hort. Sci. 93 521 531 Goodwin, P.B. Murphy, M. Melville, P. Yiasoumi, W. 2003 Efficiency of water and nutrient use in containerized plants irrigated by overhead, drip or capillary irrigation Aust. J. Exp. Agr. 43 189 194

Free access

Uttara C. Samarakoon, Keith A. Funnell, David J. Woolley, Barbara A. Ambrose, and Ed R. Morgan

controlled-release fertilizer (Osmocote ® 3-4 month; Everris International). Plants were grown in a heated greenhouse (heated at 15 °C, ventilated at 20 °C) under a capillary irrigation system using drippers, which supplied between 50 and 60 mL of water per

Full access

Rhuanito Soranz Ferrarezi, Geoffrey Matthew Weaver, Marc W. van Iersel, and Roberto Testezlaf

. < www.ces.ncsu.edu/depts/hort/floriculture/plugs/ghsubfert.pdf > Barreto, C.V.G. 2011 Use of capillary irrigation growing Citrus limonia L. in small recipients. Univ. Campinas, Campinas, Brazil, PhD Diss Barreto, C.V.G. Ferrarezi, R.S. Arruda, F