Tag Archives: Volume_18_Number_1

BIOGICAL CONTROL OF STAIN FUNGUS IN RUBBERWOOD (Hevea Brasilliensis Muell. Arg.) By Trichoderma sp.

Two strains of Trichoderma harzianum Rifai. were tested as biological control agents against blue stain fungus (Botryodiplodia theobromae Pat.) under laboratory condition. Agarmethod was conducted to measure the growth of stain fungus. Steriled spore suspension was prepared by washing off the surface of Trichoderma plate with distilled water. The result showed that soluble metabolites in the suspension of each strain ... Read More »

MILK PACKAGE (U.H.T.) RECYCLE FOR COMPOSITE BOARD

The present investigation on milk package (U.H.T.) recycle for composite board by using various ratio of milk package (U.H.T.)/ wood flake of 15-years old Eucalyptus camaldulensis in composite board fabrication. The objective of this study us aiming to find out the suitable processing method of composite board. The experimental showed that the properties such as board density, board moisture content, ... Read More »

SPECIES DIVERSITY OF TREES IN DRY DIPTEROCARP FOREST AT SAKAERAT NAKORNRATCHASIMA PROVINCE III. TREE SPECIES DIVERSITY VARIATIONS AND SOIL FERTILITY

Studies on the variations of tree species diversity in dry dipterocarp forest at Sakaerat resulting from soil fertility were investigated by using the results of discriminant analysis of soil and plant relationships in which soil fertility in forms of the accumulation down  to 50 cm depth of soil organic matter and macronutrients were found to be effectively discriminated the similarity ... Read More »

PRODUCTION AND MARKETING OF PLYWOOD IN THAILAND

The objectives of the study were to determine the production and marketing of plywood in Thailand. The results of the study indicated that there were 21 plywood mills in 2000. There are 3 kinds of raw materials being used for plywood production namely, veneer logs, veneers and glues. During the 5 years period (1996-2000) revealed that the highest and lowest ... Read More »

OBSERVED AND HYPOTHETICAL EFFECT OVER TIME OF THE TERRACED FOREST PLANTATION ON SOIL AND WATER LOSSES AT DOI ANGKHANG HIGHLAND PROJECT, CHIANG MAI

Change of soil and water losses over time of 6 exotic-species from Taiwan namely: Aleurites Montana, Zalkova formosana, Liquidambar formosana, Acacia confuca, Fraxinus griffithic, and Paolonia taiwaniana plated on 2×2.5 m spacing with narrow bench terrace at Doi Angkhang Highland Project, Fang District, Chiang Mai, was observed using runoff plots of 4×15 m installed for each species. Storm runoff and ... Read More »

AN APPLICATION OF USED PLASTIC BOTTLE FOR RAINFALL MEASUREMENT

An application of used plastic bottles for rainfall measurement was conducted at Huai Hong Krai Royal Development Study Center, Doi Saket, Chiang Mai Province. Pairs of 25 mpdified used plastic bottle funnels 2” (R2) and 3” (R3) diameter raingage were installed around the standard 8” (R8) diameter raingage in four directions (North, East, West, and South) within the radius of ... Read More »

BIODIVERSITY DYNAMICS OF ECTOMYCORRHIZAL AND WOOD-ROTTING FUNGI IN FORESTED WATERSHED AREAS OF WESTERN THAILAND

This study was carried out to investigate the biodiversity dynamics of ectomycorrhizal (ECM) and wood – rotting fungi (WRF) in tropical forest at Mae Klong Watershed Research Station, Thong Phaphoom District, Kanchanaburi Province, Western Thailand during 1993 – 1997 (5 years period). Studies were made in natural forest (Plot 1: dru-deciduous dipterocarp forest, dry-or semi-evergreen forest and mixed deciduous forest); ... Read More »

INSECT PEST INVENTORY AND MONITORING OF EXOTIC PLANTS AT DOI ANGKHANG, CHIANG MAI PROVINCE

Insect pest inventory and monitoring of exotic plants were carried out at Doi Angkhang, Changwat Chiang Mai during 1988 to 1997. The main purpose was to know forest insect pest species damaged exotic plant species types of damages and levels of damages. Forest insects of fast growth exotic plant species were surveyed. The results showed that six exotic plant species ... Read More »