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98014

NFT CONTROLLED – ENVIRONMENT FACTORS AFFECTING PRODUCTION OF GREEN FODDER

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Last updated: 04 Jan 2025

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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 (LEDS) , fluorescent lamps  and compact fluorescent lamps (CFLS) 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 (LEDS) , lighting exposure: 12h/day and  air change rate of 40 times/h.

DOI

10.21608/mjae.2016.98014

Keywords

nutrient-film technique, semi- environmental control chamber, LED light source, Nutrient solution, air change rate

Authors

First Name

M. A.

Last Name

MOSALLAM

MiddleName

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Affiliation

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

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First Name

M. E.

Last Name

SHETAWY

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Affiliation

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

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First Name

R. R.

Last Name

EL-BESSOUMY

MiddleName

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Affiliation

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

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First Name

T.

Last Name

ABDEL - FATTAH

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Affiliation

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

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Volume

33

Article Issue

2

Related Issue

14763

Issue Date

2016-04-01

Receive Date

2020-06-25

Publish Date

2016-04-01

Page Start

697

Page End

712

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 33_Issue 2_Pages 697-712.pdf

PDF . 825.3kB

Link

https://mjae.journals.ekb.eg/article_98014.html

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https://mjae.journals.ekb.eg/service?article_code=98014

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Original Article

Type Code

1,326

Publication Type

Journal

Publication Title

Misr Journal of Agricultural Engineering

Publication Link

https://mjae.journals.ekb.eg/

MainTitle

NFT CONTROLLED – ENVIRONMENT FACTORS AFFECTING PRODUCTION OF GREEN FODDER

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Article

Created At

23 Jan 2023