Response of Eucalyptus camaldulensis planted at Thung Kula Ronghai to fertilizer application [Thailand]
1985
Bunvong Thaiutsa | Wisut Suvannapinut | San Kaitpraneet (Kasetsart Univ., Bangkok (Thailand). Faculty of Forest. Dept. of Silviculture)
Experimental plot of randomized block design was established in 2-year-old eucalypt plantation planted at Thung Kula Ronghai by the Village Woodlot Project. The plot consisted of 3 blocks of 13 treatments having 20 trees in each treatment. With an exception of control, urea (64 % N), ammonium phosphate (20-20-0), and mixed fertilizers (15-15-15) were individually applied at the rates of 25, 50, 75 and 100 g/tree. Dbh and total height were recorded every three months. Results showed that all kinds and rates of fertilizer applied did not affect height growth. Only dbh responded to fertilizer application, 25-g urea and 50-to 100-g mixed fertilizers in particular. Trees fertilized with ammonium phosphate at all levels did not differ in diameter growth from the controls
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