Suitable seedling performances for transplanting of Melia azedarach Linn. as affected by sizes of containers
2000
Thavee Chairuangsirikul | Chatuporn Mungkalarat | Pitaya Petmak | Boonchoop Boontawee(Royal Forest Dept., Bangkok (Thailand). Forest Research Office. Silviculture Research Div.)
Study of suitable seedling performances for transplanting of Melia azedarach Linn. as affected by sizes of containers was conducted at Thong Pha Phum Forest Tree Seed Production Station, Thong Pha Phum District Kanchanaburi Province in 1997. Phenological study of this fast growing specie shows that the leaves fall in October and completely fall in January, the sprouting of new leaves is in February. Flowers or fluorescences happen in February, bloom and end in March. The fruits happen at the end of March, the development of fruits takes 8 months, ripe and fall in November. The steps of this experiment were sequenced by seed collection, seed handling, nursery operation, completely randomized design application and data collection respectively. Nursery operation took 4 months for this experiment. The study of growth in term of average height of 4 month-seedlings of Melia azedarach Linn., which were planted in 4*6 inches, 5*8 inches and 6*8 inches plastic containers equal to 14.63, 23.90 and 35.18 centimeters. From ANOVA, there were significantly differences among sizes of containers. In term of average diameters at ground level, 0.26, 0.30 and 0.46 centimeter were recorded at the same time as height and there were highly significant differences in statistics. Root/Shoot ratio was applied to consider the suitable seedlings before outplanting in the feild. The root/shoot ratio (dry weight) of 4 month-seedlings of Melia azedarach Linn. equal to 1.016, 1.119 and 1.143, those were nearly balanced. Therefore the seedlings from each size of container could be suitable for planting in the field. The differences among sizes of containers were nonsignificant in term of root/shoot ratio.
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