การใช้ปุ๋ยอนินทรีย์ไนโตรเจนชนิดต่างกันเลี้ยงสาหร่ายคาบอมบ้า (Cabomba caroliniana A. Gray) ในห้องปฏิบัติการ
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Abstract
Use of Various Inorganic Nitrogen Fertilizers for Culture of Green Cabomba (Cabomba caroliniana A. Gray) in Laboratory
Kamonporn Srinuan1, Jarunee Chiayvareesajja2 andSommai Chiayvareesajja3*
A completely randomized design experiment comprising of 4 treatments with 3 replications was undertaken in order to search for the appropriate inorganic nitrogen source for growing green Cabomba (Cabomba caroliniana) in laboratory. Fifty grams green Cabomba and 50 litres water with 4 sources of nitrogen fertilizer (fertilizer 25-5-5 as a control unit, urea, ammonium chloride and potassium nitrate) were put into glass aquaria for 4 weeks. Aeration was provided throughout the experiment and fluorescent lamps giving a light intensity of 3,000 Lux were turned on for 12 hours a day. It was found that the green Cabomba grown in water containing fertilizer 25-5-5 and ammonium chloride showed the highest specific growth rate (2.36 %/day).