Page 187 - Shaping A Sustainable Future

Plastic is another type of waste generated at the Water Management
nursery and consists of plastic pots and growing bags
(see Figure 5). These are torn and not reusable. Plastic Prince’s Landscape has a water reservoir (15 m by 30
waste is discarded by the waste disposal company m by 4 m depth) on the nursery’s premises (see Figure
Tidy Maintenance & Engineering Pte Ltd. at the cost of 6). The reservoir captures some of the rainwater runoff
$30.00 per tonne. from the site, as well as waste irrigation water. A passive
filter is constructed to clean the water before entering
the reservoir (see Figure 7).

Figure 5: Plastic and general waste in
the nursery.

Synthetic Chemicals

Synthetic chemicals used by the company are in the Figure 6: Reservoir inside the
nursery.
form of inorganic and organic fertilizers, and pesticides
including insecticides and algaecides. Fertilizers are
applied once every two months to keep the plants
healthy and presentable.

Pesticides are applied once every month to keep pest
populations low. Trained workers to apply chemicals
according to the labels and material safety data sheets.
From our research, we found that all of these chemicals
are considered broad-spectrum inorganic pesticides.
Chemical pesticides are known to accumulate in the
soil. They can adversely affect the growth of beneficial
microbial organisms in the soil and affect non-target Figure 7: A part of the filtration system being
organisms beneficial to the ecosystem. upgraded.

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