Design of Flood and Drain Vertical Hydroponic System
Konstrukcija prelivnog i odlivnog vertikalnog hidroponičkog sistema
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Author
Patwardhan, Ashwini
Keywords
flood and drain vertical hydroponic systempak-choi
irrigation
prelivni i odlivni vertikalni hidroponični system
kineski kupus
navodnjavanje
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Show full item recordAbstract
The study was conducted by installing the Flood and Drain Vertical
Hydroponic System for cultivating Chinese leafy vegetable Pak-choi (var. Choko) of
family Brassicaceae. The system was designed in the department of Irrigation and
Drainage Engineering, K. K. Wagh College of Agricultural Engineering and Technology
with the help of CATIA software. The sowing of 112 seeds of Pak-choi was done in
perforated net pots containing media of coco-pit (8% N : P : K treated) and vermiculite
in 1:1 proportion. Irrigation was applied to the crop by deep flow technique through
beds. The average pH readings before and after each irrigation was 6.40 and 6.76 and the
average values of EC before and after each irrigation was 0.79 mmhos·cm-1 and 0.97
mmhos·cm-1, respectively. Also the average moisture content of media before and after
each irrigation was noted, which was 18% and 71% respectively, available moisture
content for complete growth of crop ranged from 46.73 to 57.05%. The water
requirement of Pak-choi crop was 2.63 cm.
The fertilizer applied was 1.9 gm N:P:K for overall growth of crop. The harvesting
of crop was done after 70 days from sowing and the yield of crop was 7 kg from 1.8 m2
area. The total cost of system was estimated to be Rs.3400 /-. Highest germination of
96% was achieved with our hydroponic system, which was 26% more than germination
percentage quoted by the manufacturing company of seeds. Yield of Pak-choi crop in
hydroponic system was twice than the yield obtained from field conditions. Therefore,
the Flood and Drain Vertical Hydroponic System designed gave 66% more cropping
area than the open field. Istraživanje je izvedeno na instalaciji prelivnog i odlivnog hidroponičkog
sistema za uzgoj kineskog kupusa (var. Choko) iz familije Brassicaceae. Sistem je
konstruisan u Institutu za navodnjavanje i odvodnjavanje Fakulteta za poljoprivrednu
tehniku i tehnologiju K. K. Wagh, pomoću programa CATIA. 112 semena kupusa je
posejano u perforirana gnezda sa podlogom od kokosovih vlakana (tertian sa 8% N:P:K)
i vermikulita u odnosu 1:1. Biljke su navodnjavane tehnikom dubokog toka kroz
podloge. Srednje vrednosti pH pre i posle svakog navodnjavanja iznosile su 6.40 i 6.76,
a srednje vrednosti EC pre i posle svakog navodnjavanja iznosile su 0.79 mmhos·cm-1 i
0.97 mmhos·cm-1, redom. Srednji sadržaj vlage u podlozi pre i posle svakog
navodnjavanja iznosio je 18% i 71%, redom, a dostupna vlaga za potpuni porast biljaka
varirala je od 46.73% do 57.05%. Zahtev biljaka za vodom iznosio je 2.63 cm.
Za ukupni porast biljaka primenjeno je 1.9 gm N:P:K đubriva. Biljke su ubrane 70
dana posle setve, a prinos je iznosio 7 kg sa površine od 1.8 m2. Ukupna cena sistema
procenjena je na Rs.3400 /-. Najveća kliavost koja je postignuta ovim hidroponičkim
sistemom bila je 96%, što je 26% više od procenta klijavosti koji garantuje proizvođač
semena. Prinos kineskog kupusa u hidroponičkom sistemu bio je dvostruko veći od
prinosa postignutog u poljskim uslovima.