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Abstract Detail



Recent Topics Posters

OLUWOLE , OLOWOYO JOSHUA [1].

Growth of Spinacea Olereacea from soil treated with urine compared with other soil amendments in Pretoria, South Africa .

The challenge of feeding the ever growing population is largely dependent on using the limited land and improving soil fertility.  The study investigated and compared the effects of different soil amendments (urine, bio solids, inorganic fertilizers and sawdust) on the growth rate of Spinacea olereacea. Soil samples collected from the same area within the University were transferred into experimental pots. Sawdust, urine, bio-solids and chemical fertilizers (NPK) were added to the pot plants and thoroughly mixed with the soil. It was observed from the study that spinach grown in soil treated with urine had significantly higher stem height and leaf lengths and thus higher leaf area when compared with other amendments (P< 0.05). The growth and leaf appearance in soil treated with urine were significantly faster at the onset of the planting than the other amendments.  Nutritional constituents from spinach planted on soil treated with urine were also very high when compared with other soil amendments. However, the concentrations of N, C, Cu, Cd and Pb were significantly higher from spinach grown in soil treated with chemical fertilizers (p < 0.05). A significantly higher concentration for organic matter content was noticed from soil treated with chemical fertilizer (p < 0.05). The soil pH ranged between 6.43±0.35 – 6.84±0.23 with significantly higher concentrations from the bio-solids and the lowest concentrations from the urine. The addition of various soil amendments significantly affected the physico-chemical properties of the soil. The study showed that the use of urine as a nutrient had positive impact on the growth of the spinach; however, the biosolids had more leaves and lower levels of trace metals.


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1 - Sefako Makgatho Health Science University, Biology, P.O. Box 139, Medunsa, Pretoria, 0204, Rsa

Keywords:
Urine
spinach
Nutrient accumulation
pollution.

Presentation Type: Recent Topics Poster
Session: P
Location: Hall D/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 5:30 PM
Number: PRT011
Abstract ID:1793
Candidate for Awards:None


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