Jurnal Lahan Suboptimal : Journal of Suboptimal Lands
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Respon Bibit Kakao terhadap Pemberian Pupuk Organik Limbah Cair Pabrik Kelapa Sawit dan Dolomit pada Tanah Sulfat Masam
No full textAcid sulfate soil productivity is low due to the low availability of nutrients and high levels of soil acidity. It needs the organic material and dolomite to create the growing medium to be balance on its nutrient available, both physical and biological characteristic on the acid sulfated land. The aim of this research was to know the respond of cacao germ and the optimal doses of organic fertilizer of palm oil mill effluent. This research was take place in Jambi during September 2012 until March 2013. The factorial completely randomized design was applied. The first factor was organic fertilizer of palm oil mill effluent doses (0, 70, 140 and 280 ml.polybag-1 or equivalent with 0, 28.000, 56.000 and 84.000 l.ha-1). The second factor was dolomit doses (0, 2 and 4 g.polybag-1 or equivalent with 0, 800 and 1600 kg.ha-1). Kakao Lindak Klon ICS 13 was used as indicator plant. The acid sulfated soil was taken from Lagan Ulu Village Tanjung Jabung Timur District Jambi Province. The result of the research showed that the respond of cacao germ toward to an organic fertilizer of palm oil mill effluent and dolomite useness effected on the increasing of vegetative growth. Generally conclusions showed that the combination of 800 kg.ha-1 of dolomite and 84.000 l.ha-1 organic fertilizer of palm oil mill effluent was the optimal treatment which show the maximum of plant high, crown dry weigh, leaf wide and root crown ratio
Kelimpahan dan Pola Penyebaran Nematoda Entomopatogen sebagai Agensia Pengendali Serangga Hama pada Berbagai Lahan di Semarang
No full textThe soil was a place which plants and various organisms live. One of the soil organisms that plays an important role as agents of biological control of parasitic nematodes of insects, was known by entomopathogenic nematodes (ENP’s). The aims of this research was analyzing the population density and patterns spread of the entomopathogenic nematodes on overgrown annuals land, overgrown perennial land, non-vegetation land and ranch land. The experimental design used in this study was a randomized design group. The technique of determining location using purposive sampling. Soil samples were taken at four location with eight replicates. The research was held in August-October 2013. The ENP’s of land obtained by the technique of baiting using Tenebrio molitor. The result showed that ENP’s population density was found from ranch land was 67.411 tail/mL. It was higher than the ENP’s population density on non-vegetation land was 15.199 tail/mL. The statistics Mann Whitney showing absence of difference density of populations ENP’s. A pattern to scatter nematode entomopathogen on some land widely distributed in clumped
Adaptasi Beberapa Varietas Unggul Kedelai yang Berdaya Hasil Tinggi dengan Pemberian Dolomit dan Urea di Lahan Pasang Surut
No full textEfforts to improve soybean productivity in tidal land, including through land improvement (amelioration) as of lime, use of improved varieties and the fulfillment of plant nutrients. This study aims to determine the adaptation of some soybean varieties for high yield in the tidal land. Research activities conducted in tidal land Banyu Urip Village Subdistrict Tanjung Lago Banyuasin District from July to September 2013 design used is Split Split Plot Design consisting of 3 factors with 3 replications. Main plots were dose Dolomite (D0= 0 ton/ha dolomite, D1= 2 ton/ha dolomite), subplots were dose of urea (P1= 25 kg/ha urea, P2= 50 kg/ha urea, P2= 75 kg/ha urea) and the plot is children soybean varieties (V1= Argomulyo, V2= Anjasmoro, V3= Tanggamus). Variables measured were plant height 17 DAT, plant height 7 MST, leaf chlorophyll and number of branches. The results showed that the varieties that produce Argomulyo plant height, leaf chlorophyll content, and the number of branches is better than the soybean crop varieties Tanggamus and Anjosmoro. Thus soybean varieties are more adaptive Argomulyo planted in tidal land
Pengaruh Wadah dan Lama Penyimpanan Serbuk Sari terhadap Viabilitas Serbuk Sari Kelapa Sawit (Elaeis guineensis Jacq.)
No full textPollen of oil palm is one of important components that might affect productivity of oil palm (Elaeis guineensis Jacq.). Viability and availability of pollen directly affect the quality and quantity of oil palm. The aim of this research was to evaluate the effect of storage container and time of storage to pollen viability. This research has been conducted at Seed Preparation laboratory of PT. Sampoerna Agro Tbk, PT. Bina Sawit Makmur Mesuji Kabupaten Ogan Komering Ilir. The experimental design being used was Factorial Randomized completely design with two factors were storage containers i.e. Pirex tube reaction (M1), Film Ampoule (M2), Vial bottle (M3) and Glass Ampoule (M4) and time of storage i.e. storage for 0, 1, 2, 3, 4, 5 and 6 months. Each treatment was replicated three times. Parameters being observed included pollen viability, potential of maximum growth and pollen growth rate. The results showed that storage container and time of storage influenced potential maximum growth significantly but there was no effect on pollen viability and pollen growth rat
Kerusakan Pucuk Tebu oleh Scirpophaga nivella (F.) di Pertanaman Tebu Lahan Kering, PTPN VII Cinta Manis
No full textThe biggest obstacle sugarcane in Indonesia, including in South Sumatra and centers Cinta Manis sugar cane plantations that attack shoot borer (Scirpophaga nivella (F.). The study was conducted from July to December 2012 in PTPN VII Cinta Manis South Sumatera. One ha land observation area. Observation plots were divided into 5 plot diagonally into 5 plots each measuring 200 m2 with a population of approximately 1500 sugarcane stalks, performed every 2 weeks old plants of 1.5 months to 6.5 months. The research purposes were observing damage of sugarcane shoots by shoot borer (Scirpophaga nivella). Experimental research methods, data were collected purposively and directly at the affected plants. Hoist length formed by shoot borers from leaves to growing points was the 18.47 cm. Place of imago out mostly on the 3rd and 4th segment. Length of drilled stem was 8.20 cm. Damage caused by shoot borer could made totally dead or made siwilan on sugarcane
Budidaya Pakchoy (Brassica rapa L.) di Lahan Tailing Pasir Bekas Penambangan Timah dengan Amelioran Pupuk Organik dan Pupuk NPK
No full textThe objectives of this research are to study of the feasibility of using the sandy tailings for pakchoy (Brassica rapa L.) cultivation, to study the effect of organic manure and NPK fertilizer ameliorants to growth and yield of pakchoy and to get the optimum dosage of the organic manure and NPK fertilizer for pakchoy cultivation in sandy tailings of tin post-mining. This research was conducted in sandy tailings site which has been 27th years old after mining in Pemali Village Bangka District on May 2013 to July 2013. This research used factorial randomized completely block design with two factors and three replications. The first factor is organic manure dosage (15; 30; 45 ton/ha) and the second one is NPK fertilizer dosage (200; 250; 300 kg/ha).The results that the sandy tailings of tin post-mining is feasible to pakchoy cultivation. Organic manure dosage affected the growth and production of pakchoy and dosage of 30 ton/ha of organic fertilizer give the best growth and yield responses. There was no significant effect of NPK dosage to growth and yield of pakchoy. There was no significantly interaction effect of organic manure and NPK factors to growth and yield of pakchoy
Emisi Karbon Lahan Gambut pada Agroekosistem Kelapa Sawit
No full textCarbon emissions is one of the activities of agroecosystem impacts of oil palm on peat land as a result of the making drainage and plant growth. This research was conducted in the area of oil palm agroecosystem on peat land landscape, Ogan Komering Ilir District, South Sumatra with the aim of estimating reserves and carbon emissions on the land. Contribution of carbon emissions on the land with plant age 5, 3 and 2 years without drainage channels are respectively 12.027; 11.262 and 9.783 tons CO2/year, as well as plants age of 5 years with the drainage channel is 14.723 tons of CO2/year. Contribution of carbon emissions from the making drainage channel reaches 2,696 tons of CO2/ha/year and greater than the contribution of carbon emissions from the aging plant palm oil annually, amounting to 0.383 to 1.479 tons of CO2/ha/year
Aplikasi Formulasi Pakan Seimbang untuk Mendukung Peternakan Itik Petelur Ramah Lingkungan
No full textFeed is a major factor in the business of laying ducks. Approximately 70% of the production is to feed. Therefore, to get optimum benefit, feed must be efficiently formulated. To efficient, feed must be balance, the content of feed nutrients must be in accordance with the needs of livestock, so the remaining nutrients out of feed is a minimum. In addition to efficient, balanced feed can also reduce environmental pollution. Waste produced from farm can be a source of contamination of water or wells, if there is no further waste management. One of the consequences of water pollution by livestock waste nitrogen levels are rising. To simplify and accelerate the balanced feed formulations required a software application. This paper aims to introduce balanced feed formulation based software. Application software consists of three main parts, namely database, data processing and results. Simulations conducted on laying ducks feed on the production period. Two types of feed used in this simulation, namely: regular feed (PB) and balanced feed (PS). Each type of feed is repeated five times. Simulation results with the feed formulation software application show significant difference between PB and PS feed. PS is better than PB. Application of balanced feed formulation can be used to support environmentally friendly farming laying ducks
Efisiensi Pemanfaatan Lahan pada Tumpangsari Jagung (Zea mays L.) dan Kedelai (Glycine Max L. Merrill) di Lahan Pasang Surut
No full textTidal swamp is suboptimal land with low fertility rates. This study aims to determine the cropping pattern through intercropping spacing arrangement with biological fertilizer application on corn and soybean. Field research was conducted in the village of tidal swamp Banyu Urip South Sumatra in June-November 2013 using the Split Plot design with the main plot composition Corn planting distance (J) - Soybean (K) i.e. JK 1:3, 1:2 and 1:1; subplot is the provision of biological fertilizer (0, BioP, Azospirillum and BioP + Azospirillum) with 3 replications. Data monoculture corn and soybean as control. Land use on maize soybean intercropping obtained shelled corn and soybean production highest in treatments JK 1:3 with inorganic fertilizer application, although not statistically significantly different (HSD = 0.05). The efficiency ratio is calculated through the land Land Equivalent Ratio (LER) in the treatment of JK 1:3 high of 1.56 whereas the biological fertilizer application LER was 1.69. Competition between plants with CR (competition ratio) of 7.25 occurred at the highest JK 1:1. This study showed a favorable outcome in the land use pattern of intercropping maize planting soybeans in tidal swamps
Kecernaan Jerami Padi Yang Disuplementasi Zn Lysinate dengan Teknik In Vitro
No full textThis study was conducted to determine the digestibility of rice straw that supplemented with Zn Lysinate by in vitro techniques. This research was held in laboratory of Animal Feed and Nutrition, Departement of Animal Science, Faculty of Agriculture,  Sriwijaya University. Completely Randomized Design (CRD) with four treatment and four replications, were used : P0 (rice straw control),  P1 (rice straw with Zn Lysinate 0,1%), P2 (rice straw with Zn Lysinate 0,2%),  P3 (rice straw with Zn Lysinate 0,3%). Observed parameters were dry matter digestibility (DMD), organic matter digestibity (OMD), and N-ammonia concentration.The result showed  that the highest dry matter digestibility, organic matter digestibility and N-amonia were on M0 treatment ; 33,86%, 44,94%, 1,50mM respectively. Supplementation of Zn Lysinate for rice straw had  effect on Dry Matter Digestibility (DMD), but had no effect on Organic Matter Digestibity (OMD) and N-Amonia concentration