Sengon Seedlings Research Articles

Pengaruh Konsentrasi dan Lama Perendaman Larutan Polyethylene Glycol 6000 terhadap Panjang dan Jumlah Daun Bibit Sengon (Paraserianthes falcataria L.) dari Benih yang Terdeteriorasi

Wood production in Indonesia continues to increase every year. Sengon plant propagation is done using seeds. The problem with the propagation of sengon plants in Indonesia is the lack of availability of prime sengon seeds. This research aims to determine the effect of concentration, soaking time, and the interaction between concentration and soaking time of Polyethylene Glycol 6000 (PEG 6000) on the length and number of leaves of deteriorating sengon (Paraserianthes falcataria L.) seedlings. The research was carried out in the greenhouse of the Faculty of Agriculture, Universitas Pembangunan Nasional “Veteran” Jawa Timur. This research used a two-factor completely randomized design (CRD) with twenty treatment combinations and three replications. The first factor is the concentration of Polyethylene Glycol 6000 (PEG 6000) which consists of 0% peg 6000; 10% PEG 6000; 15% PEG 6000; 20% PEG 6000; and 25% PEG 6000. The second factor is the soaking time which consists of 6 hours, 12 hours, 18 hours and 24 hours. Observations include the height and number of leaves of the seedlings. The results showed that giving a concentration of 15% PEG 6000 gave better results for seedling height and number of leaves. The soaking time for PEG 6000 for 12 hours gave better results for the height of sengon seedlings and the soaking time for 18 hours gave better results for the number of leaves. The combination of concentration and soaking time for PEG 6000 showed no real interaction.

Pengaruh Jenis Zat Pengatur Tumbuh terhadap Pertumbuhan Awal Bibit Sengon Laut (Paraserianthes falcataria)

Growth Regulatory Substances stimulate growth by signaling target cells to divide, grow or inhibit cell division or elongation. Plant response to ZPT application varies greatly depending on the stage of development. The growth of shoots and roots can be stimulated by immersing ZPT, because this method makes it easier for a part of the sengon plant, namely the seed, to absorb growth regulators. This study aims to determine the effect of the type of growth regulator on the initial growth of sea sengon seedlings. This research was conducted at the Jember State Polytechnic from June 2022 to September 2022. This study used a Non-factorial Randomized Block Design consisting of 4 levels, namely ZPT gibrelin acid (50 ppm), antonic (2 cc), coconut water 1 liters and finally water (control). Each treatment combination was repeated 6 times. The obtained data were analyzed using ANOVA at the 5% level. Has the result that the treatment of giving the type of growth regulator treatment on the initial growth of sea sengon seedlings has a significant effect on plant height (cm) and germination ability, and has no significant effect on stem diameter (mm), number of petioles, root length (cm), weight plant wet weight (grams), plant dry weight (grams), root wet weight (grams) and root dry weight (grams).

Distribusi Biomassa dan Karbon Tingkat Semai Jenis Manggis, Lengkeng, Sengon dan Jelutung

The carbon content in trees is affected by the amount of tree biomass. The value of the biomass content of the tree indicate to the value the carbon content. It is interest to study of the growth rate of seedlings and learn to carbon and biomass distributions. This aims of the study is to know the level of carbon distribution of Manggis, Lengkeng, Sengon and Jelutung seedlings. The samples of selected seedlings were removed (destructive method). The roots washed by water to remove the sticky soil. The samples dried for 1 day, dried with a temperature of 102 ± 30C to constant weight. Samples that have dried out are separated by organs (roots, stems and leaves), to measure the weight of biomass. Method of calculating carbon by ash of biomass for calculating carbon percentages. The percentage of carbon multiplied by the calculation of biomass to calculate carbon. The results of the study show that the Lengkeng (14.10 g) seedlings have the higher value of carbon, than Manggis (5.14 g), Jelutung (3.80 g), Sengon (2.01 g), respectively. The distribution of carbon in seedling organs of the seedling level were varies. Jelutung and Lengkeng seedlings were higher value of carbon distribution in stem, than the roots, the leaves, respectively. Sengon seedlings have the larger value of carbon distribution in the leaves, than the stems and the roots, respectively. Manggis seedlings have the larger value of biomass distribution in stem than the leaves, the roots, respectively.

Partisipasi Masyarakat dalam Program Gerakan Tanam dan Pelihara 50 Juta Pohon terhadap Tingkat Penjualan Bibit Tanaman Hutan di Provinsi Jawa Barat (Suatu Kasus pada Pengada/Pengedar Bibit Tanaman Hutan di Provinsi Jawa Barat)

This study aims to determine how the implementation of The Movement of 50 Million Trees Planting and Caring (GTPP) program in terms of the volume of sales of seeds to forest plant seed suppliers/distributors, types of seeds, area and percentage of each community participation group; the effect of the GTPP program on the level of seed sales to forest plant seed suppliers/distributors in West Java; as well as the variable of community participation which has the most influence on the level of seed sales to forest plant seed suppliers/distributors in West Java Province. The results showed that community participation in the implementation of the GTPP program based on data for the period 2020 to 2021 seen from the type of seed the most were Sengon seedlings as many as 5,233,197 stems, with the most sales by CV. Putra Dilan Jaya as many as 2,013,768 stems and based on the largest area is from Sukabumi Regency as many as 3,485,988 stems. Based on the results of statistical tests for the average difference of the variables of community participation in the GTPP program, namely participating in providing seeds for marriage, birthday, making STNK/PKB for R2 vehicles, making STNK/PKB for R4 vehicles, Graduation, promotion, ASN and Business Entities obtaining permits (IMB/Business Permits and others) there is a significant average difference. The variable of community participation that has the most influence on the sale of tree seedlings is the Business Entity that obtains a permit (IMB/Business Permit and others), with the highest average sales of 4205 or 55.43% of tree seedlings and has a significant average difference. with other variables.

Pengaruh Karakteristik Internal dan Eksternal Petani Terhadap Keberhasilan Usaha Bibit Sengon (Paraserienthes falcataria) (Suatu Kasus di Kebun Bibit, Jawa Barat)

Sengon plants are dominant in their development, especially in community forest management. The availability of a market that accommodates community forest products makes farmers active in planting commercial tree species even on narrow lands using agroforestry methods so that they get profits. This research uses a qualitative research type. The research was conducted in Cicalengka District, Bandung Regency with the unit (subject) of analysis is the Giri Jaya Farmers Group and the object of the research is the internal and external characteristics of producing sengon. Variable X1, namely the internal characteristics of farmers is something inherent in the farmers, such as age, education, farming experience and number of dependents in the family. These internal characteristics will affect the expertise of farmers in sengon cultivation. Variable X2, namely External Characteristics is a characteristic that is influenced by external influences such as information media, interaction with other farmers, assistance and counseling. Variable Y, namely the Success of Sengon Seeds Business. The success of sengon production is seen from the quantity and quality. Measurement of variables with ordinal measuring scale, assessed with 3 scores. with a population size of 60 people. The sampling technique was using the saturated sample (census) method. The analysis technique used multiple linear regression analysis with hypothesis testing using the SPSS computer program. The internal characteristics of farmers have a significant effect on the success of the sengon seedling business (0.175). Internal characteristics that have an effect on increasing the production of sengon seedlings are the age and experience of the farmers. The external characteristics of farmers significantly influence the success of the sengon seedling business (0.124). External characteristics that have an effect on increasing the production of sengon seeds are the activities of mentoring and counseling farmer

Effect of Endophytic Fungi on the Growth of Sengon (Falcataria moluccana)

Endophytic fungi have been reported to promote plant growth and resistance to biotic and abiotic stresses. This study aimed to determine the effect of endophytic fungi application isolated from the sengon (Falcataria moluccana) seeds on the growth of sengon. The seed-borne endophytic fungi were applied when the session was three weeks old by sprinkling each suspension of endophytic fungi (103 to 106 spores/ml) on the soil around the plant roots. The experimental parameters evaluated were height, diameter, and total wet and dry weight. This study showed that endophytic fungi treatment has no significant effect on the stem diameter, total wet weight, and water content; but significantly affected the height and total dry weight. Cladophialophora sp. and Ascotricha sp. fungi increased the height growth of sengon, while Aspergillus sp. fungi increased the total dry weight against the control. Ochroconis sp. treatment was not significantly different from the control. The shoot-root ratio values range from 1.13-1.43, indicating that the seeds already have roots supporting plant growth. The Dickson quality index range from 0.65-1.03 suggested that the seedlings have good biomass distribution. Consequently, endophytic fungi have the potential to increase the growth of sengon seedlings. Keywords: endophytic fungi, Falcataria moluccana, seedling growth, sengon

Kajian Penerapan Teknologi Pengendalian Penyakit pada Pembibitan Sengon di Bogor

Sengon (Falcataria moluccana) cultivations still have to face threats from plant diseases. Diseases can be found in nurseries and plantation. Biological agents can be used to control various types of plant diseases and have various advantages. The use of biological agents in forestry plantations must consider the aspects of effectiveness and efficiency. This study aims to examine the effect of various treatment of control technology packages on the incidence of major diseases, and to determine the financial feasibility of various disease control technology packages for sengon in nurseries. The research was conducted through interviews to explore cultivation techniques and production costs. In addition, experiments were carried out on the application of various disease control strategies using commercial formulations of biological agents. The commercial formulations of biological agents used were Rhizomax, Primagrain, Trichowish, Kayabio, Bio-Hara Plus, and fungicide Dithane M-45 80 WP. There were two treatment packages of new technology that have an effect on increasing the growth of sengon at the beginning of growth stage, namely P1 (BioHara Plus and KayaBio) and P2 (Rhizomax and Primagrain) treatments. All treatments of the new technology package had no significant effect on increasing the survival rate and suppressing the incidence and severity of disease in sengon seedlings. All new technology package treatments can generate profits even though the value is smaller when compared to existing technology treatments. All the new technology package treatments have an R/C ratio of more than 1 so that they are feasible to be applied by farmers.
 
 Keywords: biological control, feasibility, plant diseases, nurseries, Falcataria moluccana

PERCEPATAN PERTUMBUHAN BIBIT SENGON (Paraserianthes falcataria L.) DENGAN APLIKASI PERENDAMAN BENIH PADA MEDIA TANAM KOMPOS

The purpose of this study was to determine the acceleration of the growth of Sengon Seedlings with a long treatment time of soaking the seeds planted in compost soil media. This research was conducted in the experimental garden of the Agrotechnology Study Program, Faculty of Science and Technology, Tabanan University. The study was conducted from July 2020 to October 2020, using the basic design of a factorial randomized block design (RAK) which was repeated three times. The treatment that was tried consisted of two factors, namely the immersion time factor and the compost planting media factor.The results showed that the interaction between the soaking time of Sengon seeds and the composition of the compost growing media had a very significant effect (P<0.01) on the wet weight parameters of the underground plant parts and the oven-dry weight of the underground plant parts, significantly (P < 0 0.05) on the parameters of the total wet weight of the plant and the total dry weight of the plant, while the other parameters had no significant effect (P > 0.05). The highest total oven dry weight of the plant was produced by the interaction between the composition of the growing media: soil: sand: compost (1:1:2) and the soaking time of 12 hours (K2P2), which was 2.89 g, while the lowest was produced by the interaction between the composition of the growing media. soil:sand (1:1) with no soaking (K0P0) which is 0.25 g or an increase of 1056%.

Identification and disease severity of dieback disease on sengon seedlings in Persemaian Permanen Dramaga Bogor

Sengon is one of the forestry plant commodities favoured by the community. So that the provision of healthy seedlings in the nursery is significant to achieve successful planting. However, sengon is very susceptible to several diseases. One of the diseases is dieback in the nursery. This study aims to calculate the incidence and severity of shoot death in sengon seedlings in Persemaian Permanen Dramaga Bogor and identify the types of pathogens that cause dieback in sengon seedlings. Methods of data collection were carried out using the census and scoring methods. In addition, the identification process was carried out under a light microscope with a magnification of 40×10. Data analysis was performed using descriptive analysis. The percentage of disease incidence and dieback severity in sengon seedlings were 10.809% and 73.764%, where the severity of the disease is declared as severe. Based on the identification results, the fungus Rhizoctonia sp. is suspect as the cause of dieback in sengon seedlings.

Pathogenicity test of fungal leaf blight on sengon seedlings at Permanent Nursery Dramaga Bogor

Sengon (Paraserianthes falcataria L. Nielsen) is a plant from the Fabaceae family that has a lot of potentials, both ecologically and economically, to be planted in rehabilitation areas. This study aimed to examine the pathogenicity of the fungus that causes leaf blight on sengon seedlings. The research method includes pathogenicity test activities consisting of field observations, pre-testing, and testing. The study used a Completely Randomized Factorial Design (RALF) and Duncan’s follow-up test. Rhizoctonia sp. has the fastest diameter growth compared to other fungi. Pathogenicity test results can be known that Rhizoctonia sp. produced the highest disease incidence and disease severity and was significantly different from other fungi. Rhizoctonia sp. produces 100% of disease incidence and 87.5% of disease severity. Wound treatment did not show a significant difference. Leaf blight spreads quickly over the entire surface of the sengon leaves, causing leaf fall and seedlings to die.

Effects of mycorrhizae and rhizobium on the growth of sengon (Paraserianthes falcataria Neils) seedlings planted on peat media

The objectives of the research were to analyze the effects of mycorrhizae and rhizobium on sengon seedling growth through the height, and number of leave increments, diameter growth, and dry weight of roots. Factors applied were mycorrhizae and rhizobium. Mycorrhiza factor consisted of without mycorrhizae, 15 gram/polybag, and 30 gram/polybag. Rhizobium factor consisted of without […]

Assessment on the Suitability of Planting Non-Native Peatlands Species Falcataria moluccana (Miq.) Barneby & Grimes in Rewetted Peatlands

Sengon (Falcataria moluccana), a fast-growing timber tree that naturally grows on mineral soils, is currently promoted in peatlands. This study aimed to (1) experimentally test the response of sengon seedlings in waterlogged conditions in the nursery; (2) describe and analyze the biophysical condition of a sengon plantation and its growth; (3) describe sengon farm practices on peatlands; and (4) identify key actor’s perception on planting sengon on peatlands. This study combined an experiment in nursery, field measurements, and key-informant interviews. The nursery experiment showed that peat soil affected seedling’s growth: survival rates decreased by 25–33% after 3 months of inundation. Sengon growth at age 1–5-years-old in peat soil was slower than that on mineral soils. Sengon growth in peatland was influenced by peat depth and peat maturity. Sengon plantation in Central Kalimantan was driven by market availability and industrial wood demand. Fourty-three percent of respondents thought sengon does not grow well in peat soils, but 57% of respondents thought that additional soil treatment will enhance site suitability. Based on key-informants’ experience, 64% disagree with sengon development in peatlands. Our study provides evidence that sengon is predominantly not suitable to be planted on peatlands. Therefore, cautions need to be taken when planting sengon on peatland areas.

PENGARUH PEMBERIAN PUPUK ORGANIK CAIR URIN SAPI FERMENTASI TERHADAP PERTUMBUHAN BIBIT SENGON (Paraserianthes falcataria L.)

This study aims to determine the percentage of sengon seedling life, and determine the effect of the best concentration of liquid organic fermented cow urine fertilizer on the growth of sengon seedlings. The study used a completely randomized design with 5 treatments and 10 replications. The results obtained from this study are the percentage of live growth of Sengon seedlings by an average of 100%, the treatment has a significant effect on height increase and diameter increase while the effect of increasing number of leaves has no effect.Keywords: influence, organic, fermented cow urine, sengon

PENGARUH MEDIA TANAM TOPSOIL DAN ABU JANJANG SAWIT TERHADAP PERTUMBUHAN BIBIT SENGON (Paraserianthes falcataria)

The research aimed to know the effect of growing media that giving the best respons to growth of sengon and to know the effect of treathment the best for each parameter on the growth of sengon seedlings. The study was conducted duringjuni until Agustus 2016 in UPTD PembibitanTanamanHutanDinasKehutanan dan perkebunanKabupatenKotawaringin Timur Procinsi Kalimantan Tengah. Experiment design arranged in a Completely Randomized Design (RAL) with 6 treatment by 10 times. The treathment this study was combinasi from growing media with oil palm bunc by K (100 % Top Soil : 0 % AJS), A (90 % Top Soil : 10 % AJS), B (80 % Top Soil : 20 % AJS), C (70 % Top Soil : 30 % AJS), D (60 % Top Soil : 40 % AJS), dan E (50 % Top Soil : 50 % AJS). The research variable is percent of life tree, high tree, number of lieves, and diameter stem after that Data analysis using analysis of varian (Anova).Analysis results shows that giving oil palm buncis effect to percent of life tree, high tree, number of lieves, and diameter stem. Combinasitreathment of growing media C,D and E getting the best does to percent of life tree, as well as combination of growing media the effective to respon growth sengon is combination D for growthofhigt tree, and combinasi of growing media E for number of lieves and diameter stem.Keywords: Sengon; growing media and oil palm bunc

Pengaruh Kombinasi Pupuk Hayati Endomikoriza, Trichoderma spp., dan Pupuk Kompos terhadap Pertumbuhan Bibit Sengon (Paraserianthes falcataria (L.) Nielsen) (Effect of Bio-Fertilizer, Endomicorrhiza, Trichoderma spp., and Compost Combination on the Growth of Sengon Seedlings (Paraserianthes falcataria (L.) Nielsen))

Sengon (Paraserianthes falcataria (L.) Nielsen) is a tree species commonly planted in community forests and managed using an agroforestry system. In order to grow a high-quality sengon tree, high-quality seeds are essentials. In addition, providing biofertilizers and organic fertilizers during the nursery phase is necessary. This study aimed to determine the effect of Trichoderma spp., endomycorrhizae, and compost fertilizer combination on the growth of sengon (Paraserianthes falcataria (L.) Nielsen) seeds and to determine the optimum ratio to increase the growth of sengon seeds. The research was performed in the Plant Taxonomy Laboratory (Mycology) and Unda Anyar Watershed and Protected Forest Management Office in Bali. The research was performed with six treatments, namely: A (sterile or untreated soil), B (sterile soil and 10 g of compost), C (10 ml Trichoderma spp.), D (10 ml Trichoderma spp., 100 endomycorrhizal spores, and 10 g compost), E (10 ml Trichoderma spp., 150 endomycorrhizal spores, and 10 g compost), and F (10 ml Trichoderma spp., 200 endomycorrhizal spores, and 10 g compost). This study consisted of five groups with three sub-unit plants. The results showed that the combination of Trichoderma spp., endomycorrhizae, and compost fertilizer significantly increased plant height, amount of stem branches, fresh weight and dry weight of plant, and dry weight of root compared to control. However, the effect on the root fresh weight was not significant. A combination of 10 ml Trichoderma spp., 150 endomycorrhizal spores, and 10 g of compost fertilizer was the most optimal and effective in increasing the growth of sengon seeds. Keywords: mycorrhiza, sengon seedlings, woody plants

Effectiveness of MZ2000 Mycorrhizal Biofertilizer on The Growth of Sengon Seedlings

Mycorrhizal biofertilizers contain fungi that are capable of entering and symbiotic mutualism into plant roots and increasing the ability of plants to absorb nutrients. Fertilizer effectiveness testing is needed to protect consumers from the adverse effects of using biofertilizers. This study aims to determine the effectiveness of MZ2000 mycorrhizal biofertilizers and to know mycorrhizal root infections in sengon seedlings in nurseries. The combination treatment of 30 g MZ2000 mycorrhizal biofertilizer with 5 g NPK fertilizer gave the best sengon growth results although it was not significantly different in several parameters compared to the combination treatment of MZ2000 fertilizer dosage and other NPK fertilizers, with the value of agronomic relativity (Relative Agronomic Effectiveness / RAE) 580.80% for high growth and 288.72% for growth in stem diameter and incremental benefit cost ratio (IBCR) analysis of farming by 2.48. So that the dosage of the combination treatment of mycorrhizal biofertilizers and NPK fertilizer is most agronomically and economically effective. With the effectiveness of the fertilizer, the MZ2000 mycorrhizal biofertilizer can be declared to have passed the field effectiveness test.

KAJIAN DOSIS PUPUK KANDANG AYAM DAN FREKUENSI PENYIRAMAN TERHADAP PERTUMBUHAN BIBIT SENGON (Paraserianthes falcataria (L) Nielson)

The purpose of this research was to study : (1) interaction effect between the dosage of chicken manure with the frequency of watering, (2) effect of chicken manure dosage, and (3) effect of watering frequency, to the growth of sengon seedlings. This research uses a completely randomized design which was factorially composed, consisting of 2 factors, namely (1) dosage of chicken manure (D), consists of 4 levels, (2) watering frequency (F), consists of 3 levels. From these two factors, were obtained 12 treatment combinations, where each of which was replicated 3 times. Data were analyzed by Analysis of variance, continued by Honestly Significant Diferent Test. The results of this study is: (1) interaction between dosage of chicken manure and frequency of watering occurs only to seedling height, (2) the dosage of chicken manure significantly effected to stem diameter, number of compound leaves, fresh weight of seedlings, and dry weight of seedlings. While frequency of watering significantly effects only the stem diameter, (3) chicken manure with a dosage of 37.5 g/crop is optimum dosage, while watering with a frequency of 2 times a day is right frequency of watering, for the growth of sengon seedling.

KETAHANAN BIBIT SENGON ( Falcataria moluccana (Miq) Barneby & J.W. Grimes) TERHADAP CENDAWAN Uromycladium falcatarium BERDASARKAN ASAL BENIH DAN JENIS PENGENDALI

Gall rust disease caused by Uromycladium falcatarium fungus is one of sengon ( Falcataria moluccana ) diseases in the nursery and field. The purpose of this study was determining the effect of seed sources and controller type against the resistance of sengon seedlings from infection of Uromycladium falcatarium in the nursery. The research design used a factorial completely randomized design with two 2 factors i.e sources of the seed (A1 = seed from the endemic area of gall rust/Kediri; A2 = seed from non-endemic of gall rust/Cianjur) and the type of cotrollers (B1 = no treatment l; B2 = biological fertilizer of Plant Growth Promoting Rhizobacteria (PGPR) (5 g.l -1 ); B3 = Biofungicide (5 g.l -1 ); B4 = biofungicide of soursop leaf extract (10 g.l -1 ); B5 =mancozeb (2 g.l -1 ). Each treatment combination consisted of 10 seedlings repeated 4 times. The observation variables were the disease incidence and intensity, the number of teliospores and thickness of the epidermal cell wall. The results of the study showed that the interaction of seed sources and type of controller affected the number of teliospores and thickness of the epidermis. The lowest number of teliospores (6.48 teliospores) was found in seedlings f rom non endemic gall rust areas with the controller of soursop leaf extract. The thickest epidermal cells (5.43 μ - 5.84 μ) were produced from seedlings from gall rust-free area with PGPR solution controller, soursop leaf extract and mancozeb. The disease intensity in seedlings originating from gall-free areas (3.5 percent) is lower than endemic areas (5.2 percent). PGPR and mancozeb were effective to the infection of fungus because the disease incidence and intensity were low after the 3rd control stage.

PEMBERIAN LIQUID ORGANIC FERTILIZER (LOF) TERHADAP PERTUMBUHAN SENGON (Paraserianthes falcataria (L) Nielsen) (Influence of Liquid Organic Fertilizer (LOF) on Sengon (Paraserianthes falcataria (L) Nielsen) Growth)

ABSTRACTIn agriculture, the use of waste and garbage organics and seasonings are often used tomake liquid organic fertilizer (LOF), but the making and the using of this LOF in theforestry is still very rare. The objectives of this study were to determine the influence ofliquid organic fertilizer (LOF) on Sengon growth and to find out the best LOF dose forSengon growth. The raw materials of LOF in this study were black sugarcane water, oldcoconut water, rice washing water, Sasa seasoning, fruits peel, Kepok banana hump,Petung bamboo shoots, and shrimp paste. This study used a Completely RandomizedDesign (CRD) with a total experimental unit of 200 Sengon seedlings divided into 5treatments and each treatment consisted of 40 replications. The five treatments were P1(Control, 0 ml LOF), P2 (10 ml LOF + 2 liters of water), P3 (20 ml LOF + 2 liters ofwater), P4 (30 ml LOF + 2 liters of water), and P5 (LOF 40 ml + 2 liters of water). Theresults showed that the influence of liquid organic fertilizer (LOF) had a very significanteffect on each dose treatment on the growth parameters of Sengon seedlings, whichincluded parameters of increase in height, number of leaves and increase in diameter.The treatment of the P5 dose (40 ml + 2 liters of LOF) gave the best influence on thegrowth of Sengon seedlings.Keywords: Liquid organic fertilizer (LOF), sengon

IDENTIFIKASI DAN TINGKAT KERUSAKAN OLEH SERANGGAPERUSAK PADA BIBIT SENGON (Falcataria moluccana) DI PERSEMAIAN PERMANEN BALAI PENGELOLAAN DAERAH ALIRAN SUNGAI DAN HUTAN LINDUNG KAPUAS PONTIANAK

Sengon is a fast growing tree species that can be harvested in a relatively short time, with a cropping rotation of around 5-8 years. This type is chosen as one of plant type industrial forest plantation in Indonesia, because it is able to adapt various types of soil. Sengon is a tree that is an alternative that can be cultivated extensively for rehabilitation purposes of marginal lands. Suplay of quality sengon seedlings is still constrained because there are destructive insect attacks.This study aims of was to identify insects that attack sengon seedlings and determine the level of damage caused by insects at permanent nursery areas BPDASHL Kapuas Pontianak. The method used in this study is a survey method with direct observation of sengon seedlings in the nursery area.The results of the study found 8 types of destructive insect that attacks sengon seedlings (Falcataria moluccana) in the nursery area namely Eurema sp., Pteroma sp., Clania sp., Amatissa sp., Atractomorpha sp., Ferissia virgata, Valanga sp., and Conochepalus sp. The dominant insects species that attacks sengon seedlings in permanent nurseries are insects from the order Lepidoptera and non-dominant insects from order Orthoptera and Homoptera. The results showed that average percentage of destructive insect attacks is 23,33% and the average percentage the level of damage is 10% including is the low in the damage category.Keywords: destructive insects, identification, level of damage, permanent nursery, sengon seedlings