Mitigating Water Lily Invasion: Evaluating the Efficiency of a Novel Manual Machine in Aquaculture Ponds
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Keywords
Water lily, aquaculture, waterlily, control, novel machine
Abstract
Despite being used in pond aesthetics, waterlilies can grow to such proportions that they become detrimental to pond aquaculture. A study was conducted in Liberia to establish the efficiency of a newly fabricated manually operated machine to remove the water lily in infested ponds. A baseline survey of fish farmers facing waterlily invasion was done. A total of 30 farmers (20 from Bong and 10 from Nimba) were interviewed. Half of the respondents (53.4%) have had no basic knowledge on the water lily. Of those who had identified it, 93% of them had made attempts to remove them from their ponds. Methods employed in the removal by the farmers were manual removal by uprooting after fish harvest (67%), cutting using cutlass and hoe (26.7%), and chemical control (6.7%). Nymphaea sp was the most dominant water lily (42.6%), followed by Nelumbo nucifera (35.7%), and Salvinia auriculata (25.3%). The newly fabricated prototype reduced the removal time by 50% and hence reduced the removal cost by the same margin for a pond measuring 1500m2. Future tests on this device should be done on larger ponds with different types of the waterlilies.
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Hinneh Mandela, Central Agricultural Research Institute (CARI), 3229 Suakoko, Bong County, Liberia
Central Agricultural Research Institute (CARI), 3229 Suakoko, Bong County, Liberia
University of Eldoret, P.o Box 1125, Eldoret, Kenya
Samuel T. Mulbah, Central Agricultural Research Institute (CARI), 3229 Suakoko, Bongo County, Liberia
Central Agricultural Research Institute (CARI), 3229 Suakoko, Bongo County, Liberia
Quaqua S. Mulbal, Central Agricultural Research Institute (CARI), 3229 Suakoko, Bong County, Liberia
Central Agricultural Research Institute (CARI), 3229 Suakoko, Bongo County, Liberia
Sampson D. Kerkula , Central Agricultural Research Institute (CARI), 3229 Suakoko, Bong County, Liberia
Central Agricultural Research Institute (CARI), 3229 Suakoko, Bongo County, Liberia
Delphine Lethimonnier, Pisciculture Paysanne (APDRA), 20 rue Ampere 91300 Massey, France
Pisciculture Paysanne (APDRA), 20 rue Ampere 91300 Massey, France
Zangtinda M. Quedraogo , Pisciculture Paysanne (APDRA), 20 rue Ampere 91300 Massey, France
Pisciculture Paysanne (APDRA), 20 rue Ampere 91300 Massey, France
Daouda Bambara , Pisciculture Paysanne (APDRA), 20 rue Ampere 91300 Massey, France
Pisciculture Paysanne (APDRA)
Miriam W. Chege, University of Eldoret, P.o Box 1125, Eldoret, Kenya
University of Eldoret, P.o Box 1125, Eldoret, Kenya
Kipkogei Chemitei , University of Eldoret, P.o Box 1125, Eldoret, Kenya
University of Eldoret, P.o Box 1125, Eldoret, Kenya