NFT CONTROLLED – ENVIRONMENT FACTORS AFFECTING PRODUCTION OF GREEN FODDER

MOSALLAM, M. A.; SHETAWY, M. E.; EL-BESSOUMY, R. R.; ABDEL - FATTAH, T.

doi:10.21608/mjae.2016.98014

NFT CONTROLLED – ENVIRONMENT FACTORS AFFECTING PRODUCTION OF GREEN FODDER

Document Type : Original Article

Authors

¹ Prof., Fac. Ag. Eng., AL- Azhar univ., Cairo, Egypt.

² Assoc – prof., Fac. Ag. Eng., AL- Azhar univ., Cairo., Egypt.

³ Lec.; Fac. Ag. Eng., AL- Azhar univ., Cairo, Egypt.

⁴ Teachg. Assist. Fac. Ag. Eng., AL- Azhar univ., Cairo, Egypt.

10.21608/mjae.2016.98014

Abstract

A Nutrient-Film Technique "NFT" and A semi- Environmental control chamber were used to detect the effect of slope and environmental parameters affecting the NFT. The environmental parameters are : concentration of the nutrient solution "NS" , lighting type and light exposure and air change per hour. Four slopes were tested ;from: 5 to 25%. Three concentrations were tested: from: 0.5 to 1.5% in addition to tap water as control. Three types of lighting were tested: light- emitting diodes (LED_S) , fluorescent lamps and compact fluorescent lamps (CFL_S) in addition a natural light as control. Four lighting times were tested: from: 6 to 24 h/day. Four airing rates were tested: from 30 to 60 times per hour. The optimal parameters for transplanting fodder are : the slope of NS channel of 5%, the feed pump discharge of 4.66 L/min under cultivating density of 1.6 kg/m² and the discharge corresponds to an empirical depth and an empirical speed of the NS(measured from a previous study of NFT unit without cultivation, Mosallam et al.,2015) this depth and this speed are 3mm 0.1m/s , respectively, concentrations of the nutrient solution 1 % , lighting type :light-emitting diodes (LED_S) , lighting exposure: 12h/day and air change rate of 40 times/h.

Keywords

References

Aldrich R. A., and J. W. Bartok (1994). Greenhouse engineering. 3rd rev., NRAES (USA). Greenhouse series. no. 33.‏

Al-Karaki G. N., and N. Al-Momani (2012). Evaluation of some barley cultivars for green fodder production and water use efficiency under hydroponic conditions. Jordan Journal of Agricultural Sciences, 7(3):448-454.

Ashour N. I., M. S. Serag , A. A. El-Haleem and B. B. Mekki (1997). Forage production from three grass species under saline irrigation in Egypt. Journal of arid environments, 37(2):299-307.‏

Bourget M.C. (2008). An introduction to light emitting diodes. Hortscience ,43:1944–1946.

Carly M. (2011). Leafy asian vegetables and their nutrition in hydroponics. Industry & Investment NSW., ISBN 978174256 0779,(24):7-8.

Cooper A.(1996). The ABC of NFT. 2ed. Grower Books, London, UK,: 20.

El-Behairy U. A. A. (1994). The effect of levels of phosphorus and zinc in the nutrient solution on macro and micro nutrients uptake and translocation in cucumber ('Cucumis Sativus' L.) grown in nutrient film technique (NFT) (Doctoral dissertation, University of London ,:56.

El-Deeba M. M. , M. N. El-Awady, M. M. Hegazi , F. A. Abdel-Azeem and M. M. El-Bourdiny (2009). Engineering factors affecting hydroponics grass- fodder production. The 16th. Annual Conference of the Misr Society of Ag. Eng., 25 July: 1647-1666.

Folta K., L. Koss , R. M. Morrow , H. Kim , J.D. Kenitz, R.Wheeler and J. Sager ( 2005).Design and fabrication of adjustable red-green-blue LED light arrays for plant research. BMC Plant Bioi., 5: 17.

Gordon A.(2008). Home hydroponics, http://www.geocities.com./cache/hydroponics.html:1-7

Graves C.J. (1983). The nutrient film technique. Horticutural Review. 5: 1-44.

Graves C.J. and R.G. Hurd (1983) .intermittent solution circulation in the nutrient film technique Acta hortic.,133:47-52.

Ikeda and Hideo (2011). Plant factory trans action son sensor sound micro machines, 131(6):200-205.

Jane B. and A. Neil (2011). Campbell. Biology: 9th Edition. California: Pearson Education.

Jenner G. and N. Starkey(1980). Nutrient film technique: Practicalities of cadmium. Plant Soil, 49: 333-342.

Liguo T. , M. Qinghao, W. Liping and D. Jianghui(2014). A Study on crop growth environment control system. International Journal of Control and Automation ,7(9):357-374.

Lynette M.(1999).Nutrient Film Technique (NFT) Production of Lettuce. Source. Available from: URL [http:www.cropking.com/NFT lettuce 1 .shtm1],:1-3.

Maher M. J. (1977). The use of hydroponics for the production of greenhouse tomatoes in Ireland. In 4^th International Congress on Soilless Culture, Las Palmas (Spain),:161-169.

Massantini F. and G. Magnani (1980). Hydroponic fodder [cereals] growing: use of cleaner-separated seed. In 5^th. soilless culture. Wageningen (Netherlands).

Mosallam M.A., M. E. Shetawy, R. R. EL-Bessoumy and T. A. Fattah (2015). Empericl graphs relating the main factors affecting a nutrient-film system. Misr Soc.of Ag.Eng.,32(4):1709-1716.

Resh H. M.(1991). Hydroponic food production. Woodbridge Prespup. California,: 462.

Spensley K., G. W. Winsor and A. J. Cooper (1978). Nutrient film technique-crop culture in flowing nutrient solution [Tomatoes], (No. 79-415860. CIMMYT.),9:299:305.‏

Stout B. A. (1984). Energy use and management in agriculture. belmont, CA: Breton Publishers.