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Agrotrop : Journal on Agriculture Science

agrotrop
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Published by Universitas Udayana

ISSN : 2088155X EISSN : 26544008 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Journal AGROTROP

Arjuna Subject : -

Articles 400 Documents

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Pengaruh Dosis dan Waktu Aplikasi Pupuk Hijau Lamtoro (Leucaena leucocephala (Lam.) de Wit) terhadap Sifat Kimia Tanah dan Hasil Tanaman Jagung (Zea mays L.) di Suco Mauboke, Distrik Liquiça Timor Leste IDA PEREIRA DOS SANTOS; NI LUH KARTINI; GEDE WIJANA
Agrotrop : Journal on Agriculture Science Vol 7 No 1 (2017)
Publisher : Fakultas Pertanian Universitas Udayana

The Effect of Dose and Time of Application of Green Manure of Lamtoro (Leucaena leucocephala (Lam.) de Wit) on The Chemical Properties of Soil and Plant Yield of Corn (Zea mays L.) in Village Mauboke, District Of Liquiça East Timor. Corn (Zea mays L.) as food, is a source of carbohydrate both after the rice, besides corn was also used the livestock feed ingredients and raw materials industry. Low crop yields at dryland farming areas is generally associated with poor soil physical and chemical properties. The application of green lamtoro, at appropriate rate and time is expected to be able to improve the soil fertility and in the end to increase crop yields. A Field experiments was conducted atvillage Mauboke, district Liquiça of Timor Leste, to know the effects of rates and time of application green lamtoro on the soil chemical properties and the yield of corn. The experiment was done from February until July 2016. A randomized completed block designwith two factors of treatment arranged factorially, was used in this experiment. The treatment consisted of greenfertilizer lamtoro 5, 10 and 15 tha-1and times of application 1, 2, 3 and 4 weeks before planting. All treatment were replicated three times. Results of experimentindicated that the interaction between rates and time of application of green fertilizer lamtoro real effects of soil N-total, number of plant and extensive index leaf, fresh brangkasanweight plants, brangkasan oven dry weight plants. The heighest oven dry seed weight was also resulted from the same rate 15 tha-1the highest 14,46% wish was not significantly. The time of green fertilizer lamtoro of 4 MST the best improved fertility of soil chemical on the rate of 15 tha-1 with the increase of C-organic of 37,90% lowest 20,93%, P-available 76,27% lowest 26.58%, K-available 100,79% lowest 21,35%. The best rate ofgreenfertilizerlamtoro 15 tha-1highest 3.7 tha-1shelled dry. The soil with similar soil condition with that ofthe experimentrecommended that the utilizing of rate green fertilizer lamtoro 15 tha-1with time application of 4 MST the increased production of corn crops.

Respon Pertumbuhan Planlet Anggrek Dendrobium sp. Melalui Aplikasi Ekstrak Tauge dan Air Kelapa pada Media Organik HESTIN YUSWANTI; IDA AYU PUTRI DARMAWATI
Agrotrop : Journal on Agriculture Science Vol 3 No 1 (2013)
Publisher : Fakultas Pertanian Universitas Udayana

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The Growth Response of Orchid Plantlets of Dendrobium sp. by Aplicación of Bean Sprouts Extract and Coconut Water in Organic Medium The aim of this researh is to obtain the effect of coconut water and bean sprouts extract and the best combination added to organic medium on growth of orchid planlets in vitro. The experiment was conducted at Tissue Culture Laboratory of Agriculture Faculty, Udayana University, Pegok Denpasar from Mei until Oktober 2012. The research design was Completely Randomized Design (RAL) with ten treatments and six replications. The results of this ezperiment showed that addition of coconut water at concentration of 150 ml/l and bean sprouts extract of 50 ml/l resulted in the best growth of orchid planlet which includes the height of plantlets (4,10 cm), the number of leaf (3,33 leaves), length of root (1,07 cm). The total fresh weight of plantlet was 0,20 g and total oven dry-weight of plantlet was 0,021 g.

Respon Pertumbuhan Bibit Anggrek Dendrobium sp. pada Saat Aklimatisasi terhadap Beragam Frekuensi Pemberian Pupuk Daun RINDANG DWIYANI
Agrotrop : Journal on Agriculture Science Vol 2 No 2 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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The aim of the experiment was to investigate the appropriate frequency of foliar fertilizer applicationof Hyponex and Gandasil D for the growth of seedlings of Dendrobium sp. at acclimatization stage.Various frequency of application for both foliar fertilizers were trialed, i.e. once in 5 days, once in 10days, once in 15 days and control (without fertilizer). The results showed that the most appropriatefrequency for the application of Hyponex and Gandasil D for seedlings of Dendrobium sp. was once inevery 10 days.

KAJIAN BEBERAPA MEDIUM PENYERAP KMNO4 DAN SUHU TERHADAP PENYAKIT ANTRAKNOSA PADA PISANG KULTIVAR SUSU LEPAS PANEN KEMASAN PLASTIK POLIETILEN RONY AL AFGANI; LOEKAS SOESANTO; DARINI SRI UTAMI
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Study of Several KMnO4 Absorbant Media and Temperature on Antracnose of Postharvest Susu Cultivar Banana Packaged in Polyethylene Plastic. A research was aimed to know the best KMnO4 absorbant media, temperature, and their combination on antracnose of postharvest susu cultivar banana packaged in polyethylene plastic was carried out at the Laboratory of Plant Disease, Faculty of Agriculture, Jenderal Soedirman University, Purwokerto. The banana with age of 3.5 months after flowering was taken from Sokawera Village, Somagede District, Banyumas Regency, Central Java. Split-Plot Design was used with the plastic. The main plot was room (25-28oC) and low (15-17oC) temperatures. The sub plot was without media and with or without inoculation, media of charcoal, coal, brick, cotton, and rockwool. Variable observed was incubation period, attact area, attact intensity, waste index, softy rate, and sugar content. Result of the research showed that the best media for absorbing KMnO4 was cotton. Low temperature could decrease softy rate of 64.75% and attact area of 92.78% compared to room one. Combination between cotton or rockwool and without inoculation at low temperature was the best treatment because of decreasing attact area ofColletotrichum musae and waste index for 100%. Inoculation of the fungus was not affect fungus attact in the KMnO4 and its combination with temperature. All treatments were not affect colour, aroma, and taste of the banana.

Aktivitas Penerbangan dan Perkembangan Populasi Thrips parvispinus Karny (Thysanoptera: Thripidae) pada Tanaman Cabai Besar (Capsicum annuum L.) NI PUTU EKA PRATIWI; I WAYAN SUPARTHA; KETUT AYU YULIADHI
Agrotrop : Journal on Agriculture Science Vol 8 No 1 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Flight Activities and Population Development of Thrips parvispinus Karny (Thysanoptera: Thripidae) on Chili (Capsicum annuum L.). Thrips parvispinus Karny (Thysanoptera: Thripidae) is one of the main pests on chili. T. parvispinus attacked the leaves and flowers on chili. The behavior of its attacked fluctuate between morning until late afternoon since the plants grow in the field. The purpose of this research was to know the flight activity of T. parvispinus and its population development on leaf and flower of chilli plant. The research used survey method with direct observation on plants in the field. Flight activity of T. parvispinus was measured by using a yellow sticky trap placed diagonally on the plant. The results showed that daily flight activity of adult T. parvispinus fluctuated between morning, afternoon, and evening. The highest flight activity of adult occurred at 09.00-10.00 (39.81 adults) and the lowest was at 18.00-19.00 (9.84 adults). The population of T. parvispinus nymph was more than adult in the leaf. The highest population of nymphs occurred at 12.00-13.00 (21.07 nymphs). While the population of T. parvispinus adul was more on flower than nymph population. The highest adult population occurred at 18.00-19.00 (27.36 adults). There were strong indications that the nymph stadium frevers live on the part of the leaf than the flower, while the adult prefers the flower rather than the leaf.

Kajian Beberapa Cara Fermentasi yang Dilakukan oleh Petani terhadap Mutu Biji Kakao (Theobroma cacao L.) NI LUH MADE PRADNYAWATHI; I KETUT ARSA WIJAYA; I NYOMAN SUTEDJA; ANAK AGUNG MADE ASTININGSIH
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Study of Assorted Fermentation Methods Conducted by Local Farmers on the Quality of VCocoa Beans (Theobroma Cacao L.). Various fermentation methods have been done by local farmers, however there has been no report on the quality of cocoa beans from those methods. This study aims were to identify various ways of cocoa beans fermentation conducted by local farmers; to compare between quality of fermented beans produced by local farmers and suggested quality of fermented beans; and o obtain a simple fermentation method which resulted in good quality beans and suitable practice for local farmers. The research wasconducted in Tabanan Regency, Province of Bali through field survey with observation and interview method, and supported with literature study. According to field observation and analysis of fermented cocoa beans taken from the local farmers, it can be concluded that most of local farmers did not fermented their kakao seeds. Thus, the fermentation done by utilizing a plastic sack, a bamboo basket or a wooden box lined and covered with banana leaves. The research also found that implementing similar fermentation methods to the seed did not always resulting similar quality of cocoa beans. Finally, the simplest method for local farmers to ferment the cocoa seed was the fermentation by utilizing basket lined and covered with banana leaves with at least 90kg wet beans.

Kadar Bahan Organik Tanah pada Tanah Sawah dan Tegalan di Bali serta Hubungannya dengan Tekstur Tanah AGUSTINA TANGKETASIK; NI MADE WIKARNITI; NI NENGAH SONIARI; I WAYAN NARKA
Agrotrop : Journal on Agriculture Science Vol 2 No 2 (2012)
Publisher : Fakultas Pertanian Universitas Udayana

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Recently, the soil organic matter was exposed decrease rapidly. The intensive soil tillage andapplication anorganic fertilizer to suppose decrease soil organic matter. How low organic matter contentof paddy soil and uppland soil not yet were taken.Soil sample of paddy soil and upland soil were taken from regency in Bali. Number of soil samplewas 96 consisted of 48 soil samples from paddy soil and 48 from uppland soil. For each regency wastaken 4 - 5 soil samples with random sampling. Soil sample was analyzed at Laboratorium TanahFakultas Pertanian Universitas Udayana. Organic matter content was analyzed with Walkley danBlack method and soil texture was analyzed with Pipet method. Organic matter content of paddy soilwere correlated with soil texture (sand, silt and clay), and of uppland soil were correlated with soiltexture (sand, silt and clay).Result of this experiment showed that, soil organic matter of paddy soil was higer than uppland soil.Soil organic matter of paddy soil with criteria very high 4.17 %, high 27.08 %, moderate 47.92 %,low 18.75 % and very low 2.08 %. Soil organic matter of uppland soil with criteria : high 6.25 %,moderate 35.42 %, low 39,58 % and very low 18.75 %. Fine texture was dominant of paddy soil, butcoarse texture was dominant at uppland soil. Correlation between soil organic matter to soil texture ofuppland soil was better than correlation between soil organic matter with soil texture at paddy soil.Correlation soil organic matter with texture (sand) at uppland soil r = -0.5142*) and correlation withclay r = 0.5007*. Correlation at paddy soil between sand and soil organic matter r = -0.1241 andbetween clay and organic matter of soils r = 0.2150.

KERAGAMAN PARASITOID YANG BERASOSIASI DENGAN LIRIOMYZA HUIDOBRENSIS(BLANCHARD)DANLIRIOMYZASATIVAE (BLANCHARD) (DIPTERA: AGROMYZIDAE) PADA TANAMAN KACANG-KACANGAN A.A.A. AGUNG SRI SUNARI
Agrotrop : Journal on Agriculture Science Vol 1 No 1 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Diversity of Parasitoid Associated to Liriomyza huidobrensis (Blanchard) and Liriomyza sativae (Blanchard) (Diptera: Agromyzidae) on Nuts Plant. The research was aimed to determined diversity of associated parasitoids withL.huidobrensis (Blanchard) andL. sativae (Blanchar) on the nuts plant in the field. The results showed that there are 8 types of parasitoids, namelyHemiptera varicornis Girault (Hymenoptera: Eulopidae).Asecodes deluchii Boucek (Hymenoptera: Eulopidae), Neochrysocaris okazaki (Kamijo) (Hymenoptera: Eulopidae), Opius spp. (Hymenoptera: Braconidae), Pnigalio sp. (Hymenoptera; Eulopidae). Clasteroceusnrsp (Hymenoptera: Eulopidae) andSphegigaster sp. (Hymenoptera: Pteromalidae). H. varicornis, A. deluchii andOpiusspp. has a different distribution spesialisation on plants hosts and altitude. H. varicornis spread evenly across the height and location of host plants. A. deluchii dominant in the lowlands and in the plains of being, andOpius spp. important in the highlands.

Efektivitas PGPR Formulasi Kompos Dalam Meningkatkan Ketahanan Tanaman Kedelai terhadap Soybean Stunt Virus I KETUT SIADI; KHAMDAN KHALIMI; I DEWA NYOMAN NYANA; I GUSTI NGURAH RAKA
Agrotrop : Journal on Agriculture Science Vol 7 No 2 (2017)
Publisher : Fakultas Pertanian Universitas Udayana

Effectiveness of PGPR Compost Formulation in Improving Soybean Plant Resistance to Soybean Stunt Virus. Soybean stunt virus (SSV) is one of important obstacles of soybean production in Indonesia. This virus causes the stunting on soybean plant and may cause the yield losses up to 71%. Eight isolates of plant growth promoting rhizobacteria (PGPR) were isolated and tested for their efficacy to control SSV on soybean. Those isolates are Paj, Pak2, Pa1, Pa3, Pa4, BT, and KT. Application of PGPR was done by soaking the seeds in PGPR solution prior to planting and application of PGPR in compost formulation. Virus concentration and disease incidence were determined using DAS-ELISA. Results of this study showed that application of PGPR in compost formulation suppressed disease incidence caused SSV. Disease incidence on treated plants ranged between 10% to 25%, while all of plant (100%) on un-treated plants were infected. Peroxidase activity on treated plants increased by 80.25% to 97.33% in comparison with un-treated plants. These results suggested that application of PGPR in compost formulation could increase the resistance of soybean against SSV. Hence, PGPR can be considered as one of measures to control SSV on soybean.

Aplikasi Pemberian Tinggi Genangan dan Dosis Pupuk Organik terhadap Hasil Padi Varietas Ciherang GEBY SAHALA SIMAMORA; I PUTU DHARMA; GEDE MENAKA ADNYANA
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

The Application of High Puddle and Organic Fertilizer on Rice Yield Ciherang Variety. Rice (Oryza sativa L.) is the staple vital food of Indonesian people. National rice production has not been able to meet the needs of the population, despite many efforts such as the use of improved varieties, fertilization, the use of agricultural machinery, and the use of pesticides. This study aimed to determine the effect of water level and organic fertilizers on crop yields of rice. This experiment used randomized block design in a simple treatment, namely the combination of the water level and the dose of organic fertilizer. This research using analysis of variance (ANOVA) to determine the effect of treatment on the variables tested. If treatment significant it will be followed by LSD test 5%. The results showed that the treatment of combination of water level and organic fertilizers provide a very real effect on the growth and yield of rice (Harvest dry grain yield ha-1). Harvest dry grain yield ha-1 obtained at the highest AMP2 treatment, namely without flooding water and organic fertilizers and 6 t ha-1 at 10.92 t ha -1 were significantly higher 70.09 % compared to the treatment of farmers. Based on the research results, it can be recommended that the application of water-saving cultivation of organic fertilizer with a dose of 6 t ha -1 needs to be done to improve rice yields.

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