Conclusions
The rice we eat is contaminated with various chemicals and heavy metals
introduced to farmlands by the use of numerous agrochemicals and
contaminated water for irrigation. This could be one of the reasons for
the various organ malfunctions and cancers burdening the population of
the country. There is an abundance of indigenous knowledge used by local
farmers in cultivation. Sri Lankan farmers used eco-friendly methods of
cultivation which were developed based on their experiences and the
scientific basis of these practices has now been proven by various
studies. At present, although most Sri Lankan farmers are dependent on
agrochemicals introduced by the western world, the agricultural sectors
of those countries are attempting to revert to organic cultivation
techniques used by ancestors since time immemorial. This shift should be
regarded as a wake-up call by farmers and authorities to adopt
sustainable agricultural practices in order to safeguard the environment
as well as human health.
- Vandermeersch, B., 1988. Deraniyagala (SU).-The Prehistory of Sri
Lanka: an Ecological Perspective. Thesis defended in March 1988 at
Harvard University, Cambridge. Bulletins et Mémoires de la
Société d’Anthropologie de Paris , 5 (1), pp.127-127.
- Cook, E.K., 1950. A note on irrigation in Ceylon. Geography ,
pp.75-85.
- Senanayake, S.G.J.N., 2006. Indigenous knowledge as a key to
sustainable development.
- Wilson, C., 2000. Environmental and human costs of commercial
agricultural production in South Asia. International Journal of
Social Economics .
- Farmer, B.H., 1986. Perspectives on the ‘green revolution’in south
asia. Modern Asian Studies , 20 (1), pp.175-199.
- World Health Organization. Food Safety Department, World Health
Organisation Staff, World Health Organization and World Health
Organization. Food Safety Programme, 2002. Terrorist threats to
food: guidance for establishing and strengthening prevention and
response systems . World Health Organization.
- Khaniki, G.R. and Zozali, M.A., 2005. Cadmium and lead contents in
rice (Oryza sativa) in the North of Iran. Int J Agric
Biol , 6 , pp.1026-1029.
- Satarug, S., Vesey, D.A. and Gobe, G.C., 2017. Health risk assessment
of dietary cadmium intake: do current guidelines indicate how much is
safe?. Environmental health perspectives , 125 (3),
pp.284-288.
- Bandara, J.M.R.S., Senevirathna, D.M.A.N., Dasanayake, D.M.R.S.B.,
Herath, V., Bandara, J.M.R.P., Abeysekara, T. and Rajapaksha, K.H.,
2008. Chronic renal failure among farm families in cascade irrigation
systems in Sri Lanka associated with elevated dietary cadmium levels
in rice and freshwater fish (Tilapia). Environmental
Geochemistry and Health , 30 (5), pp.465-478.
- Meharg, A.A., Norton, G., Deacon, C., Williams, P., Adomako, E.E.,
Price, A., Zhu, Y., Li, G., Zhao, F.J., McGrath, S. and Villada, A.,
2013. Variation in rice cadmium related to human
exposure. Environmental science & technology , 47 (11),
pp.5613-5618.
- Liu, L., Han, J., Xu, X., Xu, Z., Abeysinghe, K.S., Atapattu, A.J., De
Silva, P.M., Lu, Q. and Qiu, G., 2020. Dietary exposure assessment of
cadmium, arsenic, and lead in market rice from Sri
Lanka. Environmental Science and Pollution
Research , 27 (34), pp.42704-42712.
- Chandrajith, R., Nanayakkara, S., Itai, K., Aturaliya, T.N.C.,
Dissanayake, C.B., Abeysekera, T., Harada, K., Watanabe, T. and
Koizumi, A., 2011. Chronic kidney diseases of uncertain etiology
(CKDue) in Sri Lanka: geographic distribution and environmental
implications. Environmental geochemistry and
health , 33 (3), pp.267-278.
- Jayasumana, C., Paranagama, P., Fonseka, S., Amarasinghe, M.,
Gunatilake, S. and Siribaddana, S., 2015. Presence of arsenic in Sri
Lankan rice. International Journal of Food
Contamination , 2 (1), pp.1-5.
- Kulathunga, M.R.D.L., Wijayawardena, A., Naidu, R. and Wijeratne,
A.W., 2019. Chronic kidney disease of unknown aetiology in Sri Lanka
and the exposure to environmental chemicals: a review of
literature. environmental geochemistry and
health , 41 (5), pp.2329-2338.
- Ranawella, S., 2001. Inscriptions of Ceylon, volume 5: part
1. Department of Archaeology Sri Lanka, Colombo .
- Ranawella, S., 2004. Inscriptions of Ceylon,(from 924 to 1017 AD)(Vol.
5, Pt. II). Colombo: Department of Archaeology .
- Amarawansa K. Lakdiva sellipi. [Internet]. M.D. Gunasena; 1969.
Available from:
http://catalog.hathitrust.org/api/volumes/oclc/20403183.html
- Wickremasinghe, D.M.D.Z., Paranavitana, S., Karuṇāratna, Ḍ.S. and
Codrington, H.W., 1912. Epigraphia Zeylanica: Being Lithic and
Other Inscriptions of Ceylon (Vol. 1). Printed at the Department of
Government Printing, Sri Lanka (Ceylon) for the Archeological
Department.
- Irangani, M.K.L. and Shiratake, Y., 2013. Indigenous techniques used
in rice cultivation in Sri Lanka: An analysis from an agricultural
history perspective.
- Jayatissa, R.L.N., Dissanayake, A.K.A. and Perera, M.D.D.,
2019. Importance of Indigenous Knowledge for Food Security: In
Relation to Paddy Cultivation (No. 229). Research Report.
- Suryawanshi YC, Mokat DN. Chemical Composition of Essential Oil of
Madhuca longifolia var. latifolia (Roxb.) A. Chev. Flowers. J Essent
Oil Bear Plants [Internet]. 2019 Jul 4;22(4):1034–9. Available
from:
https://www.tandfonline.com/doi/full/10.1080/0972060X.2019.1667879
- Cushman, G.T., 2013. Guano and the opening of the Pacific world:
a global ecological history . Cambridge University Press.
- Juma, T., 2001. Abandoned mine becomes a source of organic
fertilizer. Sunday Observer Newspaper report,
Sunday , 15 .
- Nilsen O, editor. A bibliography of the mineral resources of Tanzania.
Nordiska Afrikainstitutet; 1980. p. 92.
- Misra, P.K., Gautam, N.K. and Elangovan, V.A.D.A.M.A.L.A.I., 2019. Bat
guano: a rich source of macro and microelements essential for plant
growth. Annals of Plant and Soil Research , 21 (1),
pp.82-86.
- Shahack-Gross, R., Berna, F., Karkanas, P. and Weiner, S., 2004. Bat
guano and preservation of archaeological remains in cave
sites. Journal of Archaeological Science , 31 (9),
pp.1259-1272.
- Zamaria, S.A., 2019. Palaeoclimate, palaeohydrology, and archaeology
of Mid-Holocene Australia: Trends in the human settlement of
Australia’s arid interior.
- Cleveland, C.J., Betke, M., Federico, P., Frank, J.D., Hallam, T.G.,
Horn, J., Lopez Jr, J.D., McCracken, G.F., Medellín, R.A.,
Moreno-Valdez, A. and Sansone, C.G., 2006. Economic value of the pest
control service provided by Brazilian free‐tailed bats in
south‐central Texas. Frontiers in Ecology and the
Environment , 4 (5), pp.238-243.
- Buliga, C., 2010. Guano exploitation in Madagascar.
- Maas, B., Clough, Y. and Tscharntke, T., 2013. Bats and birds increase
crop yield in tropical agroforestry landscapes. Ecology
letters , 16 (12), pp.1480-1487.
- Shetty, S., Sreepada, K.S. and Bhat, R., 2013. Effect of bat guano on
the growth of Vigna radiata L. International Journal of
Scientific and Research Publications , 3 (3), pp.1-8.
- Sridhar, K.R., Ashwini, K.M., Seena, S. and Sreepada, K.S., 2006.
Manure qualities of guano of insectivorous cave bat Hipposideros
speoris. Tropical and subtropical agroecosystems , 6 (2),
pp.103-110.
- Tuttle, M.D., Kiser, M. and Kiser, S., 2005. The bat house
builder’s handbook . University of Texas Press.
- Wanger, T.C., Darras, K., Bumrungsri, S., Tscharntke, T. and Klein,
A.M., 2014. Bat pest control contributes to food security in
Thailand. Biological Conservation , 171 , pp.220-223.