Greenhouse Technology and Management by Nicolás Castilla

By Nicolás Castilla

Greenhouse cultivation has extended in fresh a long time with elevated call for for foodstuff creation and newly built applied sciences to enhance techniques. This e-book, which concentrates on plant construction grown in plastic greenhouse stipulations, covers turning out to be ideas resembling fertilization and plant safety and up to date applied sciences and administration practices. It additionally takes an built-in method of greenhouse creation addressing matters equivalent to economics, advertising and creation strategies.

This is the English version of the profitable Spanish booklet released through Ediciones Mundi-Prensa, Madrid, and can provide content material appropriate to Spanish and all over the world creation.

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Increases in the air temperature of a greenhouse with respect to the outside air, depending on the incident global radiation for different ventilation conditions. I. Montero). 5 s–1) Leeward Plate15. Air renewal rate as a function of velocity and wind direction in a multi-tunnel greenhouse with hingedtype vents (with flap) without obstacles (a) and vents implemented with an anti-thrips screen (b) (from Muñoz, 1998). 91383 Castilla Plates_Layout 1 22/11/2012 18:39 Page 9 16 17 Plate 16. Ventilation studies of scale models of greenhouses, by means of a flow visualization technique, using liquids of different colours and densities.

This expresses the amount of water that the air, at a certain temperature, can still absorb before reaching saturation. Almeria (Spain) 30 Jun May 25 Jul Apr 20 Aug Mar 15 Sep Feb 10 Oct Jan 5 Nov Dec 0 0 5 10 20 May 25 Jun Aug Mar 15 Feb 10 Jan Sep Oct Nov Dec 5 0 5 10 30 30 Jul Apr 20 0 25 Tenerife (Spain) 30 Radiation (MJ m–2 day –1) 15 15 20 25 30 20 25 30 De Bilt (The Netherlands) 25 20 Jun May 15 Jul Apr Aug Sep Mar 10 Feb 5 Jan 0 0 Oct Dec 5 Nov 10 15 Temperature (°C) Fig. 15. Global radiation and average outside air temperature for an average year in (a) Almeria and Tenerife (Spain) and De Bilt (The Netherlands) (data from FAO; Kamp and Timmerman, 1996; Experimental Station ‘Las Palmerillas’, Almeria, Spain); (b) at Mexican locations of different altitudes: Culiacán (84 m), Ensenada (13 m) and Guanajuato (2050 m) (data from FAO).

91383 Castilla Plates_Layout 1 22/11/2012 18:39 Page 6 11 100 Activity (arbitrary units) 90 80 70 60 50 40 30 20 10 0 400 450 500 550 600 650 700 750 800 Wavelength (nm) Phototropism Chlorophyll synthesis Photomorphogenesis (‘red effect’) Reversion of the red effect Visual sensitivity 12 Net photosynthesis Canopy Isolated leaf Leaf within a canopy 0 Intensity of PAR Net respiration Plate 11. Spectral activities of different photo-biological processes (adapted from Whatley and Whatley, 1984). Plate 12.

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