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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 15 Documents

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Search results for , issue "Vol 8 No 2 (2018)" : 15 Documents clear

Pengaruh Pemupukan Berimbang Spesifik terhadap Pertumbuhan Tanaman Gaharu (Gyrinops versteegii) dan Perubahan Beberapa Sifat Kimia Tanah A.A. NYOMAN SUPADMA; I MADE DANA; I MADE MEGA
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Effect of Fertilizer (Organic + Inorganic + Dolomite) Combination to Improve of Growth Gaharu Plant (Gyrinops versteegii) and Characteristic of Soil Chemistry. This study aims to find combinations of fertilizer (organic + inorganic + dolomite) to promote the growth of gaharu plant and chemical properties of soil. This research was conducted in Tabanan Regency. The study was a randomized block design (RBD) with 7 treatments, each treatment was repeated three times to obtain 21 gaharu plants as a crop sample. The fertilizer formulations were tested as treatments as follows: A = without fertilizer (control), B = (50 g urea + 50 kg SP-36 + 50 kg KCl + 10 kg compost) + 50 g Dolomite) per tree, C = (100 g urea + 100 g SP-36 +100 g KCl + 7.5 kg compost + 75 g Dolomite) per tree, D = (150 g urea +150 g SP-36 + 150 g KCl + 5 kg compost + 75 g Dolomite) per tree, E = (200 g urea + 200 g SP-36 + 200 g KCl + 2.5 kg of compost + 100 g Dolomite) per tree, F = (200 g urea + 150 g SP -36 + 150 g KCl + 7.5 kg of compost + 100 g Dolomite) per tree, G = (200 g urea + 100 g SP-36 + 100 g KCl + 7.5 kg of compost + 75 g Dolomite) per tree. Parameters measured were plant height, girth of plants, and chemical properties of the soil. Analysis of data using analysis of variance and Duncan test (0.05). The results showed that fertilization treatments significantly affected plant height, but not significant to girth of plant. The best fertilizer combinations was the treatment of C, which were increase plant height (26,35 cm), pH (6,7), total N (0,28 %) and other chemical properties of soil.

Pengaruh Air Kelapa dan BAP terhadap Tanaman Teh Klon GMB 7 setelah Centering Ke-2 SYLVIA PUSPA HARJANTI; SANTI ROSNIAWATY; MIRA ARIYANTI; YUDITHIA MAXISELLY
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

The Effect of Coconut Water and Bap on Tea Plant Clone Gmb 7 After 2nd Centering. Tea plants as one of the leading commodities in Indonesia demanding high productivity. Clone GMB 7 and maintenance such as the formation of the area of plucking by 1st centering and 2nd centering on the immature plant can be done to improve the productivity of tea. Centering that plays a role in stimulating bud formation can be enhanced by the addition of Plant Growth Regulator (PGR) derived from natural ingredients such as coconut water and synthetic ingredients such as Benzyl Amino Purine (BAP). This research was conducted to determine the effect of BAP concentration and coconut water on tea plants after the 2nd centering. The research was conducted from July 2017 to September 2017 at Ciparanje Field Station, Padjadjaran University. The experimental design used was Randomized Block Design with 7 treatments repeated 4 times. The treatment used were: control (without PGR); 25% coconut water; 50% coconut water; 75% coconut water; 60 ppm BAP; 90 ppm BAP; and 120 ppm BAP. The best result are shown by 50% coconut water on the ratio of leaves number, the ratio of bud number, and the bud length.

Daftar Isi Agrotrop Vol. 8, No. 2, November 2018 Jurnal AGROTROP
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (26.647 KB)

Daftar Isi Agrotrop Vol. 8, No. 2, November 2018

Perbanyakan Tanaman Jeruk Siam (Citrus nobilis L.) dengan Teknik Kultur in vitro Menggunakan Biji Tanaman Terinfeksi Penyakit Citrus Vein Phloem Degeneration (CVPD) BAYU ARYA BAGASKARA; I GEDE PUTU WIRAWAN; MADE SRITAMIN; I GUSTI AYU DIAH YUNITI
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Citrus (Citrus nobilis L.) Propagation Through Culture In Vitro Using Seed From Infected Plants Of Citrus Vein Phloem Degeneration (CVPD) Disease. The sample was taken in Belancan Village, Kintamani District, Bangli Regency, and invitro culture was conducted in UPT. Genetics Resource and Molecular Biology Laboratory in February to June 2018. This research purposes were to get the new citrus plant from citrus seed infected of CVPD disease explants with culture in vitro and found the presence of the bacterium Liberobacter asiaticus in results of citrus plants culture in vitro. The sampling method is using plants appearance. Obtained sample 1 is a plant that shows severe symptoms of CVPD disease and sample 2 plants that show no symptoms of CVPD disease. Seed Sample is cultured with MS0 medium for 8 WAP then proceed to acclimatization. The results of this research showed that the seed explants from both samples were able to grow well and did not have the characteristic of CVPD disease, but explant seed sample 2 in vitro culture result showed that the bacterial DNA bacterium Liberobacter asiaticus pathogen CVPD disease does exist in length 1160bp, so it cannot be expected to produce CVPD-free crops.

Perkembangan Pradewasa dan Perilaku Parasitisasi Hemiptarsenus varicornis (Girault) (Hymenoptera: Eulophidae) sebagai Ektoprasitoid Larva Liriomyza sativae (Blanchard) (Diptera: Agromyzidae) I PUTU DARMA WIASA; ANAK AGUNG AYU AGUNG SRI SUNARI; I WAYAN SUPARTHA
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Imature Development and Parasitization Behavior of Hemiptarsenus varicornis (Girault) (Hymenoptera: Eulophidae) as a Larval Ectoparasitoid of Liriomyza sativae (Blanchard) (Diptera: Agromyzidae). Liriomyza is one of the important pests that attacking vegetable plants in Indonesia. Parasitoid which is commonly associated with Liriomyza is Hemiptarsenus varicornis. The study was conducted at the Greenhouse of the Faculty of Agriculture, Udayana University and at the Integrated Pest Management Laboratory Faculty of Agriculture, Udayana University, Denpasar. The research starts from February to September 2018. The purpose of this study was to determine the development and parasitization behavior of the pre-adult phase of H. variconis on L. sativae. The development of the parasitoid pre-adult phase was observed in the form of egg, larvae, pupa and imago stages. Observation of pre-adult phase parasitization behavior was carried out by tearing the leaves of plants that had been infested and observed under a binocular microscope. The result indicated that the time required for the development of pre-adult phase H.varicornis was nine days at an average temperature of 28oC, with egg stage (24 hours), larval stage (48 hours) and the pupa stage (120 hours). The parasitization behavior of the immature parasitoid H. varicornis includes three stages, namely the search for hosts, finding the host and receiving the host and directly infusing the host's body fluids, then going away from the host's destroyed body. Host search behavior occurs when new larvae appear, while the process of sucking in body fluids occurs when the instar-1 larvae before the instar-2 and away from the host occur before parasitoid larvae enter the pupa phase.

Reviewer Agrotrop Vol. 8, No. 2, November 2018 Jurnal AGROTROP
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (21.829 KB)

Reviewer Agrotrop Vol. 8, No. 2, November 2018

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.

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.

Cover Agrotrop Vol. 8, No. 2, November 2018 Jurnal AGROTROP
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.721 KB)

Cover Agrotrop Vol. 8, No. 2, November 2018

Parameter Biologi dan Demografi Parasitoid Diadegma semiclausum Hellen (Hymenoptera : Ichneumonidae) pada Plutella xylostella L. (Lepidoptera : Plutellidae) NI PUTU NIA KUMARAWATI; I WAYAN SUPARTHA; KETUT AYU YULIADHI
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Biological and Demographic Parameters of Parasitoid Diadegma semiclausum Hellen (Hymenoptera: Ichneumonidae) on Plutella xylostella L. (Lepidoptera: Plutellidae). Diadegma semiclausum Hellen (Hymenoptera: Ichneumonidae) is one of the parasitoid larvae which attacks Plutella xylostella (Lepidoptera: Plutellidae) effectively. This research was aimed to know the biology of parasitoid D. semiclausum in broccoli. The research was carried out in a laboratory by observing the development of parasitoid, fecundity, longevity the males and females as well as parameters demographic of D. semiclausum. The results showed that immature development time of D. semiclausum parasitoid from egg up to adult the imago was 10.65 ± 0.63 days, with the number of fecundity was 22.9 grains. Longevity of male imago of D. semiclausum was 12.10 ± 0.74 days and imago of females 9.80 ± 1.87 days. Parameters demographic of D. semiclausum showed that net reproduction rate (R0) was 22.11 per generation, intrinsic growth rate (r) was 0.18 per day, limited increased rate (?) was 1.16 individuals per day, generation time (T) was 17.50 day.

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