Abstract
Liming ponds is intended to increase swamp soil and water fish ponds pH. The golden apple snail (Pomacea canalicuata) is one kinds of agriculture pest which is potentially used as material of lime. The golden apple snail shells containing CaO (91.62%) and MgO (1.66%). This study aims to determine the best dosage of lime derived from golden apple snail shells to increase the pH of soil and water, as well as the survival and growth rate of catfish fingerlings. This study used Completely Randomized Design (CRD) with 5 treatments (4 treatments of different dosage of lime derived from golden apple snails and 1 treatment using calcite and 3 replications. The treatments used consisted of different dosages of lime : P1) 4 ton/ha; P2) 5 ton/ha; P3) 6 ton/ha; P4) 7 ton/ha and P5) calcite 6 ton/ha equivalent to CaO. The result showed that maximal pH value of P4 (lime derived from P. canaliculata 7 ton/ha) is almost same as pH of P5 (calcite 6 ton/ha) but P4 is faster to reach than that of P5. At the final day of research P4 has no significant different with calcite 6 ton/ha (P5) for alkalinity, fish growth and feed efficiency.
Highlights
The soil’s pH of swamps is generally less than 5.9 [1] and water pH of swamps below 4 [2]
Anadara granosa shells as an alternative liming materials is proven to increase soils and water’s pH swamp catfish ponds [2]
Fiveteens fish ponds filled with 7.500 L swamp water at 7 days after liming
Summary
The soil’s pH of swamps is generally less than 5.9 [1] and water pH of swamps below 4 [2]. Liming of ponds is intended to increase soil and water fish ponds pH value. Calcite and dolomite are widely used by farmers to increase soil and water pH. These limes are derived from natural and unrewenable lime mineral materials. Anadara granosa shells as an alternative liming materials is proven to increase soils and water’s pH swamp catfish ponds [2]. Pomacea canaliculata (golden apple snail) is one of agricultural pest that the shells are potential to use as liming materials.
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