Jurnal Lahan Suboptimal : Journal of Suboptimal Lands
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Efikasi Bioinsektisida Beauveria bassiana (Bals.) Vuill Terhadap Gryllus bimaculatus De Geer (Orthoptera: Gryllidae) Pada Padi Ratun
No full textSoleha, et al. Efficacy of Bioinsecticide from Beauveria bassiana (Bals.) Vuill on Gryllus bimaculatus De Geer (Orthoptera: Gryllidae) on Ratooning Rice in Fresh Swamps. JLSO 5(2):189-197. The use of chemical insecticide to control pest of crop often causes the bad impact on nontarget organisms. B. bassiana is an entomopathogenic fungi has depeloved to control pest of crop as chemical insecticide alternative. This study aimed to measure mortality and damages rate by crickets to rice of the applications of bioinsecticide containing B. bassiana. The Method of this study used Random Block Designs with 5 treatments and 4 replications. The treatments applications were 1 L.ha-1, 2 L.ha-1, 3 L.ha-1, commercial B. bassiana as recommended, and 0 L.ha-1 as control. The applications bioinsecticide containing B. bassiana was significant to nymph of crickets mortality. Mortality of nymph of the applications of B. bassiana was significant with nontreatment (0 L.ha-1). The highest mortality was found in the Bb 3 L .ha-1 about 52,50% and the lowest mortality on 0 L.ha-1. The shortest LT50 was occurred in Bb 3 L.ha-1 about 7,00 days, while the longest LT50 occurred in Bb 0 L.ha-1 about 50,47 – 64,80 days. The highest damages was found in Bb 0 L.ha-1 about 11,55% - 34,14% and the lowest damages was found in Bb 3 L.ha-1 about 5,94 % - 19,82%. Application bioinsecticide containing B. bassiana is significant to crickets mortality and will make an important contribution to the biological control for insect pests.Â
Keanekaragaman Vegetasi Rawa Di Kecamatan Tanjung Lago
No full textOktaviani, et al. Vegetation Diversity of Swamp in Tajung Lago District. JLSO 5(2):198-207. The study aims to determine the vegetation diversity of swamp ecosystems in the district of Tanjung Lago. The study was conducted from June to July 2011. Theanalysis is using squares method, and quantitative data analysis was conducted to measure the value of density, dominance, frequency, importance and diversity index of each type of plant. The results showed that the vegetation in the swamp consists of 16 genus and 21 species dominated by Pteridophyta and Spermatophyta. The value of vegetation diversity (2.0680), where the higher the number, the higher the index type of diversity of a kind. Such characteristics are caused by environmental influences such as organic matter content and low pH and factors derived by human intervention
Kandungan Hara N, P, K pada Gawangan dan Jalan Panen Perkebunan Kelapa Sawit
No full textNuryenti, et al. Content of Hara N, P, K on Gawangan and Harvest Road Oil Palm Plantation. JLSO 5(2):219-224. Differences in the location of oil palm plantations cause differences in nutrient content contained in the soil. This study aims to analyze the nutrient content of N, P, K of soil on gawangan and harvest road in PT. Sawit Mas Sejahtera. The method used is a detailed survey method with an observed area of 3 ha. Soil analysis results in nutrient content of N, P, K on harvest road showed higher yield compared to gawangan. N-total value on gawangan 0.11% and 0.16%  harvest road, P-bray value on gawangan 6.15 ppm and 15 ppm harvest road, K-dd value on gawangan 0.10 me/100 g and 0.41 me/100 g harvest road. Soil pH on harvest road and gawangan is a very low pH soil ranging from 3.84 to 4.22. Palm oil production may increase by adding calcification first before the application of N, P, K fertilizer especially on harvest road to improve soil fertility and produce optimal production
Efikasi Bioinsektisida Bacillus thuringiensis Barliner terhadap Gryllus bimaculatus De Geer (Orthoptera: Gryllidae) pada Tanaman Padi Utama dan Ratun
No full textHanif et al, 2017. Efficacy of Bacillus thuringiensis Barliner Bioinsecticide against  Gryllus bimaculatus De Geer (Orthoptera: Gryllidae) in Major Rice Crops and Ratooning Rice. JLSO 6(1):95-105.
Crickets (Gryllus bimaculatus) are an important pests on rice that can reduce productivity. The application of Bacillus thuringiensis bioinsecticide is expected to be an alternative methode to control these pest. The objective of the study was to investigate optimal dose of B. thuringiensis in suppressing rice damage was caused by G. bimaculatus. The observation were conducted on rice cultivation in Pelabuhan Dalam Village, Pemulutan Subdistrict of Ogan Ilir Regency. The results showed that application of B. thuringiensis bioinsecticide had significant effects in suppressing rice crop damage by G. bimaculatus, but did not had significant effect on growth of rice plants
Aplikasi Teknologi Bioslurry di Desa Montongsari Kabupaten Kendal Provinsi Jawa Tengah
No full textKusmiyati et al, 2017. Application of Bioslurry Technology at Montongsari Village, Kendal Regency Central Java Province. JLSO 6(2):106-112.The dependence of farmers on inorganic fertilizers is increasing from year to year. The urea requirement for agriculture in 2015 was 3.795.596 tons, increased to 4.007.463 tons in 2016. Many efforts have been made to reduce farmer’s dependence on inorganic fertilizers. The activity purpose of Student Community Service-Community Empowerment Learning was to reduce farmer’s dependence on inorganic fertilizers by using bioslurry at Montongsari village, Kendal regency, Central Java. The activities were training, mentoring and demonstration plot. Training and mentoring activities were processing of biogas wastes into solid and liquid bioslury fertilizers and their application on plant. The treatments of demonstration plot were without and with liquid bioslurry on growth and production of water spinach (Ipomoea aquatica). The result of the mentoring activities showed a biogas reactor (capacity of 4 m3) will produce 18 kg of bioslury from 20-40 kg of goat dung. Nitrogen content (N), C-organic  and C / N ratio of solid bioslury were 1.43%; 37.61% and 26.30, respectively. While nitrogen content of liquid bioslury was only 0.09%. There were no growth difference between aplication of liquid bioslurry and inorganic fertilizer on water spinach. The conclusion was  bioslury of biogas waste both solid and liquid bioslury can be utilized as organic fertilizer for plants
Pertumbuhan dan Hasil Kubis Bunga (Brassica oleraceae var. Botrytis L.) pada Media Tanam Kompos Gulma Air
No full textSusilawati et al, 2017. The Growth and Yield of Cauliflowers (Brassica oleraceae var. Botrytis L.) on Planted Media of Aquatic Weeds Compost. JLSO 6(1):43-48.The objective of this research was to know the growth and yield of cauliflowers on various planted media organic of compost aquatic weeds. This research was conducted from November 2016 to Febuary 2017. The research was rendomized block design with ten treatments and three replications. Each unit consisted of 3 plants, so there were 90 plants. The treatments were B0: (soil 100%), Be1 (75% soil: 25% water hyacinth fertilizer), Be2 (50% soil: 50% water hyacinth fertilizer), Be3 (25% soil: 75% water hyacinth fertilizer), Bu1 (75% soil: 25% hymenachne compost), Bu2 (50% soil: 50% hymenachne compost), Bu3 (25% soil: 75% hymenachne compost), Bi1 (75% soil: 25% salvinia compost), Bi2 (50% soil: 50% salvinia compost), Bi3 (25% soil: 75% salvinia compost). The result showed that the treatment 75% soil and 25% salvinia compost gave the best effects on weight flowers, leaf number, weight of fresh roots and weight of dry roots
Karakterisasi Keragaan Agronomis Varietas Padi Sawah Tadah Hujan pada Pemupukan Nitrogen dan Perlakuan Air
No full textHikmah et al, 2017. Characterization of Agronomic Traits on Two Rainfed Rice Varieties on Several Levels of Nitrogen Fertilizers and Water Treatments. JLSO 6(2):176-184.Rainfed rice varieties are expected to increase yield on rainfed fields. This research aim was to identify various agronomic characters including yield of rainfed rice varieties. It was conducted at the Sukamandi Field Station at rainy season 2016/2017, using a split split plot design with 4 replications. Water management as the main plot with two levels (I1: irrigated and I2: rainfed). Nitrogen (N) fertilizer dosage as subplot with three levels (P1: 0 kg N/ha, P2: 60 kg N/ha, and P3: 120 kg N/ha) and varieties as subplots with two levels (V1: Inpari 39 Tadah Hujan Agritan and V2: Inpari 41 Tadah Hujan Agritan). The results showed that water treatment and N dosage on each variety gave different response on their agronomic characters, including yield. Tiller numbers per hill was strongly influenced by water management and dosage of N fertilizer. In irrigated treatment, tiller number increased linearly increasing N dosage. In rainfed,Inpari 41 Tadah Hujan Agritan reach maximum tiller number with 80 N kg/ha which more efficient than Inpari 39 Tadah Hujan Agritan with 91,97 N kg/ha. Rice yield was significant effected by N fertilizer and the genetic trait of each variety. The yield of Inpari 41 Tadah Hujan Agritan was higher than the Inpari 39 Tadah Hujan Agritan. Inpari 41 Tadah Hujan Agritan reached 5.70 t/ha GKG and Inpari 39 Tadah Hujan Agritan 4.62 t/ha
Persepsi Petani terhadap Budidaya Cabai Sistem Pertanian Terapung di Desa Pelabuhan Dalam, Kecamatan Pemulutan, Ogan Ilir
No full textHasbi et al, 2017. Farmer Perception to Chilli Cultivtion in Floating Agricultural System in Pelabuhan Dalam Village, Ogan Ilir. JLSO 6(2):126-133.The purpose of this research was to utilize potential waste of local resource especially mineral bottle as a floating raft, to train farmer to construct it, to increase farm production, to socialize how to produce inexpensive, widely available, good quality and environmental friendly floating raft made of mineral bottle, and to evaluate farmers response. This research was conducted at Pelabuhan Dalam Village, Subdistrict of Pemulutan, District of Ogan Ilir. The step of this research were socialization to farmers, display the system of floating cultivation and farmers perception evaluation. The results showed that the system was prospective to be developed based on statements of interested farmers. One of the important finding was that the system was easy to maintenance. The farmers were optimistic that the system could be developed by them selves
Produksi spora Bacillus thuringiensis pada media limbah dengan penambahan tepung cangkang keong mas dan toksisitasnya terhadap Spodoptera litura Fabr. (Lepidoptera:Noctuidae)
No full textPujiastuti et al, 2017. Production of Bacillus thuringiensis Spores in Agricultural Waste with Addition of Golden Snail Shell Powder and its Toxicity Against Spodoptera litura Fabr. (Lepidoptera: Noctuidae). JLSO 6(2):150-157.Armyworm or Spodoptera litura is an important pest on the cultivation of plants. Controlling by using biological agents such as Bacillus thuringiensis is an alternative to the use of chemical insecticides which cause a negative impact on insects and environment. B. thuringiensis-based bio insecticide can be reproduced by using agricultural waste with the addition of golden snail shell flour. The study was aimed to investigate the production of B. thuringiensis spores on agricultural waste media and the addition of golden snail shell flour and its toxicity to armyworm, as well. The research design was a completely randomized design with 10 treatments and 3 replications. Treatment were the media of agricultural waste: 50 mL coconut water, 50 mL of tofu liquid waste, 50 mL of rice wash water and mixture of three media (v/v/v, 1:1:1) with the addition of golden shell flour as much as 5 g and mineral salt of CaCl2, MgSO4, K2HPO4, KH2PO4. The results showed the production of bacterial spores ranged from 8.90x107 spores/mL to 9.51x107 spores/mL with the highest production in the mixed treatment of the three waste media (coconut water, tofu waste and rice laundry water). In this treatment the level of toxicity was 40% in larvae of armyworm. The weight of leaf feed consumed by armyworm at various treatments was ranged from 36.33 to 46.67 g/10 larvae. The addition of mashed shell flour to growth media of B. thuringiensis did not increase the number of spores
Penapisan Beberapa Padi Lokal dari Pulau Enggano Terhadap Ketahanan Salinitas
No full textAstuti et al, 2017. Screening of Several Local Rice from Enggano Island to Salinity Tolerance. JLSO 6(2):134-141.
Enggano Island, Bengkulu Province, has a lot of local rice germplasm that has been cultivated by people in Enggano Island that is more than 30% as farmer. Identification of local rice from Enggano Island against biotic and abiotic stresses, especially salinity stress is necessary. The identification can be used, among other things, as the information of the local rice planting that related to the rising sea level in Enggano Island which impact on the condition and the area of rice cultivation land, and as a source of finding for resistance genes against salinity stress for improvement of those local rice varieties. Aim of this study is preliminary screening of some local rice from Enggano Island to salinity stress in seed and germination stages. The analysis used Factorial Randomized Design, two factors, the first factor is salt concentration and and the second is local variety. The salt concentrations used were 0 millimolar NaCl, 250 millimolar NaCl, NaCl 275 millimolar and NaCl 300 millimolar and the rice sample used were 11 local rice of Enggano Island, NiponBare varieties as control of rice plants, Pokali as resistant control and IR29 varieties as susceptible controls. Rice seeds that used in this test are seed in seed stage and germination stage of 10-14 days old. This preliminary screening shows three local genotype of Enggano Island that tolerance to Salinity