[EBOOK] COMPARISON OF TWO NUTRIENT SOLUTION RECIPES FOR GROWING CUCUMBERS IN A NON-CIRCULATING HYDROPONIC SYSTEM, ABRAR HUSSAIN SHAH, SHER MUHAMMAD, NOOR-UL-AMIN, FARIDULLAH KHAN WAZIR AND SAFDAR HUSSAIN SHAH

With rapid urbanization,industrialization and demographic increase in population to feed the people, improvement in agricultural/horticultural production is needed through the use of new technologies. . The noncirculating hydroponics technology is surely one of the options for growing fresh vegetables for home consumption by the city dwellers . Although the hydroponics technology in the developed world has gone much ahead, however, it is not too late to start the use of this technology..it does not involve much of the initial investment and could be considered as a method of suspended pots in a nutrient solution container for growing freshvegetables.

The entire crop could be grown in a nutrients solution container with a single filling and every one can practice this technique with little care to produce fresh vegetables in his court yard, veranda or on a roof top with out using soil as a growing medium ( Imai 1987 and Kratky 2002). In styrofoam containers of 25 cm (H) x 54 cm (L) x 34 cm (W) containing a nutrients solution of (mgL-1) NO3-N 140, P2O5 80.2, K2O 434, CaO 224, MgO 80.6, Fe (EDTA) 3, Mn 0.5, Cu 0.02, Zn 0.05, B 0.5, Mo 0.01,, Imai (1987) planted cucumber seedlings and obtained 256 fruits (from 48 plants) with the total yield of 23.3 kg and average fruit weight of 91 g in the first two weeks of harvest , beginning one month from seedling planting. He also increased the yield to 15 kg plant-1 when the crop was allowed to grow for 5 months. Likewise, Kratky (2003) devised a non-circulating hydroponics system for growing cucumbers which comprised plastic trash bin containers of 30-35 gallons capacity with lids in which the cucumber seeds could be planted in 21 cm long forestry tubes containing the growing medium (coir dust or vermiculite). The lower 2.8 cm of the forestry tubes was immersed in nutrient solution and the plants grew until less than 10% solution was left. He obtained the first harvest 50 days from seeding, and the maximum yield exceeded 7 kg plant-1 from a barrel of 120 liters. He mentioned that 3.5 kg is the normal yield of cucumber plant.

Kao (2005) obtained a yield of 2.48 kg plant-1 in 90 days from cucumbers grown in a dynamic root floating (DRF) hydroponic system having a nutrient concentration of (mg L-1), NO3-N 6.0, NH4-N 0.5, PO4-P 3.0, SO4-S 1.5, K 4.0, Mg 2.0, Ca 4.0, Fe (EDTA ppm) 2.5, B 0.2, Mn 0.2, Zn 0.01, Cu 0.01, Mo 0.01, pH 6.0, EC 1.0 mmho cm-1. Stem length of 140-160 cm and average fruit weight of 220 g, equatorial length of 16.5 cm, diameter 6.5 cm and LAI of 175 m2 leaf-1 were obtained by Gomez-Lopez et al. (2006) when cucumbers were grown in NFT 8 liter- polythene bags containing a nutrient solution concentration of (M Mol L-1 of 13.0 No-3, 1.7 H2PO-4 , O.5 NH+4, 7.5 K + , 3.5 Ca+, Mg+ 2.0 with pH 5.5-6.0 and EC =2.2 m S cm-1.

This study makes a comparison of two nutrient solution formulations and analyses their cost-benefit ratios (CBR) with a view to promote non-circulating hydroponic technology for growing fresh vegetables in the cemented houses of the Pakistan’s Pakistani people living in the cities.

[EBOOK] COMPARISON OF TWO NUTRIENT SOLUTION RECIPES FOR GROWING CUCUMBERS IN A NON-CIRCULATING HYDROPONIC SYSTEM, ABRAR HUSSAIN SHAH, SHER MUHAMMAD, NOOR-UL-AMIN, FARIDULLAH KHAN WAZIR AND SAFDAR HUSSAIN SHAH

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