Effects of grey water irrigation on the cultivation of African spinach (Amaranthus hybridus)
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Water is a limiting resource, hence there is a need for its judicious use. This study was designed to investigate the utilization and the effects of grey water irrigation on the growth parameters of African spinach (Amaranthus hybridus) and its soil properties when planted in a green house. The irrigation treatment consists of Tap water (TW) and grey water (GW) collected from Akindeko Hostel in Federal University of Technology, Akure. The vegetables were planted in five buckets samples for each irrigation treatment. The water samples were analysed to determine its chemical properties. Soil samples were collected and analysed before irrigation application and after harvest while crop morphology which include the plant height, number of leaves and stem girth parameters were recorded weekly after emergency. Grey water type has the highest chemical parameters which include TSS, SAR, pH, HCO3ˉ, Ca2+, Mg2+, and Na+. Soil pH decreased in all the soil samples after the different water applications, the lowest pH from grey water. The sodium adsorption ratio (SAR) decreased in all the irrigation treatments. The plant height, number of leaves and stem girth of the crop were affected by the water typed used as the crop irrigated with grey water has the highest morphology parameter. Soil chemical properties was significantly affected by the use of grey water, hence, appropriate wastewater treatment and water management practices have to be followed to remove the toxic elements which could be hazardous to human health when the vegetable produced on them are consumed.
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