Plantation productivity is influenced by many factors such as: plant spacing, light intensity, and plant species. High quality planting materials with appropriate spacing and optimum environmental condition
appear to be dominant factors that determine planting success. Shorea parvifolia Dyer. is one of the most valuable and fast growing tree species belongs to Dipterocarpaceae family. The growth of S. parvifolia at seedling stage needs shading with close planting space, but wide planting space is for the next stage of the growth. The objective of this study was to identify appropriate plant spacing to increase S. parvifolia growth in natural forest. The result of this study indicated that diameter of S. parvifolia at five years old with spacing of 1 m x 1 m; 1.5 m x 1.5 m; 2 m x 2 m; and 3 m x 3 m, are 6.7 cm, 7.3 cm, 7.3 cm, and 8.9 cm, respectively. Diameter increment for plantation at 1-5 years old with similar spacing were 1.61 cm, 1.20 cm, 1.94 cm, 1.32 cm, and 1.14 cm, respectively and in 35 years the diameter of this species is expected to reach 50.47 cm.

Permanent Sample Plot (PSP) is a useful tool to collect and monitor stand growth and yield data. This study was aimed to determine the optimum size of PSP, i.e. the smallest size of PSP which could represent the variability of stand parameters, for teak (Tectona grandis Linn. f) plantation forest. The 110-year old of teak stands were used as material for this study. The main consideration was that the appropriate size of PSP for old stands must be able to cover the variability of young stand structure, but not in reverse. For this purpose, stand data were collected from three sample plots of 120 m x 120 m each in size. The plots were established in Kendal Forest District, Perum Perhutani Unit I Central Java. The results showed that the optimum size of PSP for monitoring the dynamic of the number of trees periodically was 90 m x 90 m. The center part of the PSP, sized 60 m x 60 m, was optimal for monitoring the growths of diameter and stand height. These results could be implemented for each age class of teak plantation forests

Trials on growth of three seedling quality classes of red meranti species were conducted in three forest concession areas in Kalimantan, i.e. PT Sari Bumi Kusuma, PT IKANI, and PT Erna Djuliawati. The purpose of this research was to find information on survival rate and growth of red meranti seedlings after one year planted in the field under the silin program. Treatment consisted of three species and three seedlings quality classes. Factorial randomized complete block design with four replications was used for this study. Each treatment consisting of 100 plants were planted with 20 m x 2.5 m spacing. The total number of plants observed were 3,600 plants in PT SBK and 2,400 plants in PT IKANI and PT Erna Djuliawati respectively. The results show that species and seedling quality, interaction between species and seedling quality and block did not significantly affect the survival rate in both concession areas (PT SBK and PT IKANI). However, in these concession areas both species and seedling quality gave significant difference on height and diameter growth. The height and diameter growth of S. leprosula were higher than other species. The values were as much as 146.6 cm and 1.6 cm respectively in PT SBK and as much as 87.5 cm and 1.6 cm respectively in PT IKANI. The height and diameter growth of seedling quality one was higher than other seedling quality classes as much as 142.6 cm and 1.6 cm respectively in PT SBK, as much as 86.5 cm and 0.8 cm respectively in PT IKANI and as much as 164.2 cm and 1.6 cm respectively in PT Erna Djuliawati. Therefore Shorea leprosula from wilding with seedling quality class one was recommended for planting under the silin program (Selective Cutting and Intensive Planting System).

Study on stand structure and species composition was carried out in lowland forest of the KHDTK Carita, Banten in August 2007. Three plots of 5m x 40m each were set up in primary forest (PF), disturbed primary forest (DPF), and old secondary forest (OSF). The results showed that 95 tree species of 43 families were found in PF, 116 tree species of 61 families found in DPF, and 66 tree species of 44 families found in OSF. The dominant species with a complete regeneration in every stratum were found in PF, i.e. Schima wallichii (DC.) Korth. with an IVI of 10.03% for tree, Dysoxylum densiflorum (Blume) Miq. with an IVI of 35.00% and of 37.27%, for saplings and seedlings, respectively. The dominant species at the DPF were Castanopsis acuminatissima (Blume) A. DC. with an IVI of 19.88% for tree, followed by Vitex pinnata L. with an IVI of 20.46% for saplings, and Glochidion rubrum Blume with an IVI of 13.10% for seedlings. The dominant species at OSF were Vernonia arborea Buch.-Ham. with an IVI of 5.10% for tree, followed by Lithocarpus elegans (Blume) Hatus ex Soepadmo with an IVI of 20.46% for saplings, and Archidendron jiringa (Jack) Nielsen. with an IVI of 13.10% for seedlings.

Development of community forest is one of the efforts to overcome the problems in forestry through community empowerment. The aim of the research was to formulate social planning for community forest development. This research was conducted at the Seri Tanjung Village, District of Muara Enim, and the Tanjung Sirih Village, District of Lahat, South Sumatra Province. Data were collected by using interview method, literature review, and Focus Group Discussion (FGD). The result indicated that most respondents had potential attitude and good knowledge in community forest program, however, they still had less experience in cultivating forest tree. The extension program had not influenced their attitude but had influenced their behavior in the interest to cultivate forestry crops. It is suggested more theoretical and technical extension concerning agroforestry based cultivation are given

Activities of forest management require a well planned, systematic and well directed handling, so that achieving maximal and beneficial results in terms of economic, ecological and social prospect. In relevant to data on truck volume of available tree stands are required to set up a plan intended to produce sustainable timber. The research was Conservation Research and Development Center located in West Java. The trunk volume model as conceived was based on the Smalian’s formula employed to particular tree species (i.e. Shorea balangera;, S.guisso; S.laprosula; S.mecistopteryx, S.ovalis;, S.palembanica; S.pinanga;, S. selanica;, S.seminis and S.stenoptera). This model could estimate be estimated from the tree diameter on a single variable

A trial was carried out in Carita, West Java, to identify the effectiveness of Glyphosate and 2.4 D Amin Herbicide to control weeds under Bl. plantation. The trial was conducted through the application of Glyphosate and 2.4 D Amin Herbicide with dosages of 5, 6, 7, 8 and 9 liter per ha and compared with Glyphosate herbicide 5 liter per ha, manual treatment, and control (no treatment). The result showed that Glyphosate and 2.4 D Amin Herbicide could be used to control weeds in order to  iS.selanica Bl. plantation. Minimum dosage of 6 liter/ha was effective to control weeds such as Chromolaena odorata DC, Mikania micrantha Will L L Lantana camara I., Imperata cylindric Beauv., Melastoma malabathricum L, and Boreria latifolia Bl. Furthermore, there was no symptom of poison on S.Selanica Bl. plantation after herbicide application with all dosages applied.