Jurnal Agrotech (Universitas Alkhairaat Palu)
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STRUKTUR KOMUNITAS PARASITOID YANG BERASOSIASI DENGAN PENGOROK DAUN TANAMAN BAWANG MERAH DI BALI
Get PDFThe existence of a type of parasitoid in an area with a certain height is largely determined by several factors, including the physical environment, space, feed sources, the presence of other parasites and human intervention. The purpose of this study was to determine the community structure of parasitoid associated with stone leek leafminer including abundance index, diversity index and dominance index in several locations of onion planting in Bali. Field surveys are conducted regularly during one planting season. On the location of onion plantations with an altitude of<500 m asl, covering the Badung Regency and Gianyar Regencies, on the onion planting area at that location no parasitoid was found (abundance index R1 = 0.00; diversity index H’= 0.00; dominance index D = 0.00). In locations with a height of ≥500-1000 m asl, covering several locations in Tabanan Regency, there were 2 types of parasitoid, Hemiptarsenus varicornis as many 3 adult (abundance index R1 = 0.6213; diversity index H’ = 0.2544; dominance index D = 0.0100) and Opius sp. 22 adult (abundance index R1 = 6.5239; diversity index H’= 0.1125; dominance index D = 0.7700). In locations with an altitude of ≥1000 m asl, covering several locations in Tabanan Regency and Bangli Regency, there were also 2 types of parasitoid namely H. varicornis 5 adult (abundance index R1 = 1.2941; diversity index H’ = 0.3380; dominance index D = 0.0433) and Opius sp. 17 adult (abundance index R1 = 5.1763; diversity index H’= 0.2013; dominance index D = 0.5887)
EKSPLORASI MIKROBA EPIFIT, ENDOFIT DAN RIZOSFER DARI BERBAGAI SUMBER PADI GOGO DI KECAMATAN KULAWI KABUPATEN SIGI
Get PDFExploration carried out in the filosphere area (leaves) and rhizosphere area (roots) in upland rice plants to get the type of microbes that have potential that can be utilized as biological fertilizer sources, such as N2 fastening microbes, plant growth microbes or phosphate solvent microbial as well as those acting as natural enemies. The research was conducted by location survey method. Determination of location is done by purposive sampling, which is the location of upland rice cultivated by farmers in Kulawi District. The results showed that 10 isolates were isolated from epiphytic and endophytic microbes and endophytes. Morphological tests showed differences in color, shape, elevation, edge, texture and size and the coloring test showed that the bacteria had Coccus cell forms, Bacill, Diplococcus and Semi-Bacillus
PENGARUH FREKUENSI DAN APLIKASI INSEKTISIDA ABAMECTIN TERHADAP KELIMPAHAN POPULASI DAN PERSENTASE SERANGAN LALAT PENGOROK DAUN LIRIOMYZA SPP (DIPTERA: AGROMYSIDAE)
Get PDFEffect of Frequency and Application of Abamectin Insecticides on Population Abundance and Attack Level of Leafminer Liriomyza, spp. (Diptera: Agromysidae) is one of the main pests on the Lembah Palu red onion, where this pest is relatively new in the Palu Valley. The aim of the study was to examine the effect of frequency and application of insecticides on population abundance, and the attack rate of L. chinensis (Diptera: Agromyzidae) on the Lembah Palu red onion plant under applied and unapplied insecticide. The treatment of abamectin insecticide was applied once a week with a concentration of 1 ml of formulation per liter of water, beginning at the age of 2 MST and ending at 7 MST. The results showed that there were 2 species of Liriomyza, spp associated with Palu valley red onion i.e. Liriomyza chinensis and Liriomyza sativae. This research found that the application of Abamectin insecticides significantly affected population development and the percentage of Liriomyza, spp. on the lembah Palu red onion
EKSPLORASI KONSORSIUM MIKROB FILOSFER DAN RIZOSFER ASAL BERBAGAI EKOSISTEM DI KABUPATEN SIGI PROVINSI SULAWESI TENGAH
Get PDFMicrobial consortium exploration in an ecosystem is a series of activities aimed at obtaining microb living in a consortium and beneficial to plant growth.The study aimed to obtain leaf and soil samples in various plants within an ecosystem, as a source of a consortium of microbial phyllosphere and rhizosphere to be tested for their effectiveness in increasing the growth and yield of rice crops. The method of determining the location is based on the method of transect sampling/line intersep plot design on an area of 5,196.02 km2. Site determination based on purposive sampling includes ecosystems: rice fields, gardens, pastures and forests.The results showed that, Sigi District has biodiversity in various ecosystems that have potential as source of consortium of microbial phyllosphere and rhizosphere. From the exploration results obtained a sample of 48 species of plants consisting of plants under the level of 30 species, 12 pile poles and 6 types of stakes. The results of the isolation of leaf and soil samples obtained 144 consortium of microbial phyllosphere and 48 consortium of microbial rhizosphere. The obtained consortium was then tested for its effectiveness on the growth and yield of rice crops in the next stage of the stud
EFEKTIVITAS PUPUK ORGANIK CAIR KEONG MAS PADA PERTUMBUHAN DAN HASIL TANAMAN PADI
Get PDFPenelitian ini bertujuan untuk mengkaji efektifitas pupuk organik cair keong mas terhadap pertumbuhan dan hasil tanaman padi. Penelitian dilaksanakan pada bulan Mei sampai November 2018 di Desa Sidondo III Kecamatan Sigi Biromaru Kabupaten Sigi. Penelitian ini dilakukan dalam 2 tahap, tahap pertama adalah pembuatan pupuk organik cair menggunakan Rancangan Acak Lengkap dengan 4 perlakuan yaitu A (Penambahan cangkang keong mas), B (penambahan daging keong mas), C (penambahan cangkang+daging keong mas) dan D (tanpa penambahan keong mas). Tahap kedua adalah aplikasi pupuk organik cair setiap perlakuan di lahan persawahan. Setiap perlakuan diulang 4 kali sehingga terdapat 16 unit percobaan.
Hasil penelitian menunjukkan bahwa perlakuan dengan penambahan cangkang+daging keong mas memberikan hasil tertinggi terhadap kandungan N,P,K pupuk cair dibandingkan perlakuan lainnya. Perlakuan Cangkang+daging keong mas nyata meningkatkan pertumbuhan dan hasil tanaman padi.
 
ANALISIS KEUNGGULAN KOMPARATIF KAKAO DI PROVINSI SULAWESI BARAT
Get PDFIncreased competitive advantage (competitiveness) of Indonesia cocoa becomes an important agenda in order face tight global competition. This research aimed (1) to determine the competitive advantage (Comparative Advantage) of cocoa commodities; (2) to investigate the competitive advantage of cocoa commodities (comparative advantage); (3. The research used a descriptivi-qualitative approach. The population included 5 regencies in West Sulawesi Province. The secondary data were obtained from the work force in the cocoa plantation in both West Sulawesi Province and lndonesia and from both the West Sulawesi Provincial Central Statistics Agency (BPS) and the National Central Statistics Agency. The analyses used were the Locational Qoutient (LQ) and SWOT analyses. The research results revealed that the cocoa commodities in West Sulawesi Province had a comparative advantage in the labor force in the cocoa plantation Sector. In general, since the last five years has the value of LQ> 1 or the average reaches 8.47. While the comparative advantage of the land area of cocoa based on a comparison with the Sulawesi area LQ value reached 2.99 in 2012. While the 2013-2014 experienced a drastic 0,95 and 0,89. That matter decline due to land conversion from cocoa to sawait
PENGARUH PEMBERIAN PUPUK ORGANIK CAIR NIRA AREN (Arenga pinnata MERR) TERHADAP PERTUMBUHAN TANAMAN KANGKUNG DARAT (Ipomea reptans POIR)
Get PDFThis study aims to determine to determine the effect of land spinach plant growth due to the provision of liquid organic fertilizer palm sugar and to determine the right concentration of palm sugar palm POC to the growth of land spinach plants. This experiment used a single factor randomized block design consisting of 4 replications of 4 treatments. The best experimental results on plant height and number of leaves, leaf length and leaf width aged 14 and 24 HST were influenced by the use of palm juice 40 ml / L water with a height of 19.59 cm and 32.13 cm number of leaves 6.34 and 12.25 strands, leaf length 13.71 and 15.75 while leaf widths are 1.74 and 3.48 cm
EFEKTIVITAS INSEKTISIDA DALAM MENEKAN PERKEMBANGAN POPULASI DAN SERANGAN LIRIOMYZA, SP PADA TANAMAN BAWANG MERAH LOKAL PALU (Allium cepa L.x Wakegi Araki) DI DESA GUNTARANO KECAMATAN TANANTOVEA KABUPATEN DONGGALA
Get PDFThis study aimed to examine the effectiveness of some insecticides on the population development and attack Liriomyza sp on local Palu onions. The research conducted from Februari to April 2017, at Guntarano village, Tanantovea Sub-District, Donggala District. The study used Randomized Block Design (RAK) consisting of four treatments, namely Po.Control; P1. Abamectin; P2. Azadiractin; P3. Dimohipo. Each treatment was repeated three times so that 12 treatments were obtained. The results showed that the insecticidal treatment had an effect on the development of the varied Liriomyza sp. Adult population at various plant age levels. Observations on plant age 5 and 6 of MST showed that abamectin insecticides were effective in suppressing the growth larvae populations of Liriomyza sp compared with the treatment of Azadiractin, Dimohipo and non-treated insecticides
PENGARUH BERBAGAI JENIS DAN DOSIS PUPUK KANDANG TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BAWANG MERAH VARIETAS LEMBAH PALU
Get PDFResearch aims to test the effectiveness of various types of manure combined with various doses of application for the growth and result of shallot varieties of Palu Valley. This research was designed using factorial randomized block design. The first factor was manure with three types of treatment, namely chicken manure (P1), got manure (P2), cow manure (P3). The second factor was the dose of manure consisting of three types of treatment, namely 10 t ha-1 (3,6 kg plot-1) (D1), 20 t ha-1 (7,2 kg plot-1) (D2), 30 t ha-1 (10,8 kg plot-1) (D3). The results show that the combination of various types of treatment and doses of chicken manure interacts on plat height parameters aged 35 days after planting. The treatment of chicken manure with a dose of 30 t ha-1 gives better results. The single treatment of chicken manure gave better results for the plant height, weight of leaves, root dry weight, leaf dry weight , number of tubers per clump. Single treatment of manure dosage of 30 t ha-1 gave better results on plant height, leaf area , leaf fres weight, leaf dry weight tuber fresh weight per hectare