臺灣國際科展

Turning Prawn Pond sludge into a fertifizer

科展類別
臺灣國際科展
屆次
2004年
科別
環境科學
得獎情形
未得獎作品
學校名稱
Smk Batu Lintang Kvehing Sarawak
指導老師
Abdullaa Hashim
作者
Larry Elle ak Nyanti
關鍵字
fertifizer

摘要或動機

This project is a research to find out if prawn pond sludge can be used as a fertilizer . This because so far there is no beneficial use of these prawn pond sludge from over 154,000 hectares of water pond culture in Sarawak . The objectives of this project were to determine if this sludge can be combined with topsoilito produce an eco-friendly and effective fertilizer for plants and to investigate what combination of sludge and top soil is the best for plant growth . It was found that sludge has high nutrient contents such as nitrogen , phosphorus , sulphur , potassium , calcium , magnesium and iron . The effectiveness of sludge as a fertilizer was investigated by growing water spinach or “kangkong” (Ipomoea aquatica) in 5 different mixture of sludge and topsoil for 3 weeks . After the third weeks , the results showed that the combination of 30% sludge and 70% topsoil produced the best results in terms of height of plant , survival , number of leaves , stem thickness and average plant weight as compared to the other combination of 0%:100% , 50%:50% , 70%:30% and 100%:0% sludge top soil ratio . Therefore , prawn ponds sludge has a great potential to be process to become a fertilizer .


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