Assessment of Frequency of Lime Application for Increasing the Fish Productivity in Ponds - AField Level Trial

By : Biswajit Goswami

Page No: 203-209

Abstract
The on farm trial were laid out in farmers’ field of Dakshin Dinajpur district of West Bengal to show the potential of the technology i.e. application of lime in two way, . Lime option 1: Lime application (single dose before stocking of fish) (total dose of lime calculated based on PH of the soil and water), Lime option 2 : Lime application (1/2 of the total dose before stocking of fish) + rest in equal monthly installment(total dose of lime calculated based on PH of the soil and water). The pH of water and soil of the district is acidic in nature. Two technology option on lime application in different frequency were tested, where existing farmers’ practice was kept. This study clearly elucidated that it will be appropriate to use the lime in pond. According to the pH of soil for boosting the fish productivity. Total net fish production after 300 days were 14.6 q/ha, 24.2 q/ha and 26.4 q/ha for the Farmers’ Practice, Lime Option 1 and Lime Option 2 respectively. By conducting effective on farm trial of proven technologies yield potential of the fish can be increased to a great extent.

Authors :
Biswajit Goswami
Subject Matter Specialist (Fishery Sc.) Dakshin Dinajpur Krishi Vigyan Kendra, UBKV, Majhian, Patiram-733133, D. Dinajpur.