Application of ammonium sulphate as a fire retardant to Acacia auriculaeformis Cunn. seedlings
1982
Narong Chujit
This is an investigation on the effect of the application of ammonium sulphate for fire protection and to determine the effectiveness on A. auriculaeformis planted with a spacing of 4 x 4 m. Another objective was to study the amount of the ammonium sulphate used for such protection, its effect on the height, growth of the seedlings and the time of the application . In experiment I, treated plots showed seedling survival from fire and height growth that was significantly better than that of the control plots. The highest survival percent was obtained at the rate of 1.0 liter/seedling while the highest height growth was at the rate of 2.0 liters/seedling. There was no significant difference between this two levels of application regarding survival percent and height growth. The control seedlings had the lowest survival percent and the lowest height growth. In experiment II, The results showed that there is no significant difference among all treatments both in terms of survival percent and height growth. This is due to seasonal effects, because air temperature is higher in February. It is recommended that ammonium sulphate should be applied at the rate of 1.0 liter/seedling on A. auriculaeformis in order to obtain a high percentage of survival and adequate height growth. It is also recommended that prescribed burning should be done in early January in this locality
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