Impact of agriculture on water pollution in Deli Serdang Regency, North Sumatra Province, Indonesia
Penulis/Author
ERNITHA PANJAITAN (1); Prof. Dr. Ir. Didik Indradewa, Dip.Agr.St. (3); Prof. Dr. Ir. Edhi Martono, M.Sc. (4); Prof. Dr. rer. nat. Junun Sartohadi, M.Sc. (5)
Tanggal/Date
3 2020
Kata Kunci/Keyword
Abstrak/Abstract
The objective of this study was to assess the
farming system of organic lowland paddy to water pollution
compared with conventional farming system in
Deli Serdang Regency. An environmental assessment in
this research is limited to the water pollution caused by
pesticides and chemical fertilizers. Water samples were
analyzed, and the levels of nitrate and pesticides were
taken of wetland and community wells. At the wetland,
water samples were taken at the drains into the plot of
rice field and the channel water out of themapped fields.
Water sampling was done every season and is upon
subsequent fertilization. Each water composite was collected
from ten sampling points which each consist of
five sampling points of organic paddy farming system
and five sampling points of conventional paddy farming
system. The results showed that the level of pesticides in
the drains coming out of paddy fields was higher than
the levels of pesticides in the inlet and water in the
community wells. The level of pesticides in organic
cultivation was lower than conventional cultivation
methods. In the dry season, the highest levels of nitrate
obtained in the outflow water are significantly different,
with inlet and well water, likewise the case with the
rainy season. There was a tendency for increasing levels
of nitrate in water, out water, and well water in the dry
season compared to the rainy season.
