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Agrosains: Jurnal Penelitian Agronomi
Published by Universitas Sebelas Maret
ISSN : 14115786     EISSN : 26557339     DOI : https://doi.org/10.20961/agsjpa
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Agrosains: Jurnal Penelitian Agronomi publishes articles related to agriculture such as plant physiology, crop production, physiology and seed production, soil science, plant breeding, plant protection, agro-climatology, agroecology, and plant biotechnology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 163 Documents
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Penggunaan Azotobacter dan Kompos Kulit Buah Kakao Terhadap Pertumbuhan dan Efisiensi Penggunaan Nitrogen Pada Pembibitan Utama Kelapa Sawit Wilda Lumban Tobing; Mariani Sembiring
Agrosains : Jurnal Penelitian Agronomi Vol 23, No 1 (2021): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v23i1.49042

Abstract

The expansion of oil palm plantations continues to increase so that it requires quality seed. Nurseries need to be done before moving to the field. The use of Azotobacter and cocoa fruit skin compost is one way to increase the  growth and nitrogen use efficiency in oil palm in main nursery. This research was aimed to know the growth and nitrogen use efficiency of palm oil in main nursery. This research was conducted on the research area of the Agricultural Agribusiness College of Agriculture Practices (STIPAP) Medan and the Laboratory of Balai Pengkajian Teknologi Pertanian (BPTP) of North Sumatra and the Agricultural Laboratory of the University of North Sumatera from February until Juli 2013. The method used was Randomized Group Design factorial with 3 replications and followed by Duncan test at α=5%. The first factor is Azotobacter including without giving Azotobacter (A0), 20 ml/polybag (A1) and 40 ml/polybag (A2). The second factor is cocoa fruit skin compost, which consists of 3 of them, namely without compost (K0), 125 g/polybag (K1), and 250 g/polybag (K2). The research parameters were plant dry weight (g), nitrogen uptake (mg) and N use efficiency (EPN). The results showed that the use of Azotobacter and cocoa fruit skin compost were able to significantly increasing dry weight of plant and N uptake of oil palm seeds and gave the highest EPN value of 12.93.  
Aplikasi Polyhalite sebagai Pengganti ZK dan Pengaruhnya terhadap Kadar K, Mg, dan S Daun, Produksi, dan Mutu Buah Jeruk Siam Sutopo Sutopo; Titistyas Gusti Aji
Agrosains : Jurnal Penelitian Agronomi Vol 22, No 2 (2020): Agrosains : Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v22i2.44249

Abstract

As a natural mineral that contains several macro elements, polyhalite (K2Ca2Mg (SO4) 4H2O) has good potential as a fertilizer. This study aims to study the effect of polyhalite on branch growth, leaf nutrition (K, Mg and S), chlorophyll index, harvest weight, fruit quality, and the effective dose of Siam citrus. A 4-year-old Siam citrus planted on vertisol soil was treated with 6 fertilizer treatments: 625; 1,000; 1,375; 1,750; 2.125 kg polyhalite and 625 kg ZK/hectare/year. The experiment using a randomized block design was repeated 3 times. The results showed thatthe application of polyhalite at the same K2O dose as ZK increased leaf Mg content, chlorophyll index and total juicesolids significantly. Polyhalite application of 1,750 kg/hectare (2.8 kg/tree) is an effective dose for mature Siam citrus in vertisol with moderate K status and high Ca and Mg status.
Dosis dan Waktu Aplikasi Boron Terhadap Pertumbuhan dan Hasil Kacang Hijau Krisna Cahya Nurani; Susilo Budiyanto; Endang Dwi Purbajanti
Agrosains : Jurnal Penelitian Agronomi Vol 22, No 2 (2020): Agrosains : Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v22i2.42058

Abstract

Green beans are legume plants that are in great demand because of their high nutrition content and include plants that require boron to support growth from the vegetative to generative phase. The study aims to assess the growth and production of green beans due to influence of the dose and time of boron application. The research was carried out using completely randomized design with factorial pattern 3×3 with 3 replications. The first factor was the treatment of boron doses of 1, 1.5, and 2 kg/ha was given once at 7 Day After Planting (DAP), fertilizer application twice at 7 and 28 DAP, and once given at 28 DAP. The results showed that dose of boron at a dose of 1 kg/ha was able to produce the number of affective root nodules and the best pod weight. The treatment of boron once at 7 DAP can increase plant height, flowering age, pod weight, and seed weight per pod. The interaction between dose and time of boron application affects the number of affective root nodules and seed weight per pod.
Pengaruh Pemberian Berbagai Konsentrasi Indole-3-Butyric Acid (IBA) dan Lama Perendaman terhadap Pertumbuhan Stek Batang Timi (Thymus vulgaris L.) Khodijah Wafia; Karno Karno; Florentina Kusmiyati
Agrosains : Jurnal Penelitian Agronomi Vol 23, No 1 (2021): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v23i1.44802

Abstract

The method of thyme stem cutting needs to be developed to produce better roots to support growth. The study aims to examine the response of thyme stem cuttings to various concentration of IBA and time soaking. The research was carried out on January – March 2020 in screen house PT. INDMIRA, Sleman, Yogyakarta and the Physiology and Plant Breeding Laboratory of the Faculty of Animal and Agricultural Science, Diponegoro University. The method used was a completely randomized design with a factorial 4×3 with 5 replications. The first factor was a various concentration of IBA: A0 (0 ppm), A1 (100 ppm), A2 (250 ppm), and A3 (500 ppm). The second factor was the time soaking: B1 (5 minutes), B2 (10 minutes), and B3 (15 minutes.) The results showed that IBA concentration has no significant effect for root dry weight, while the time soaking has significant effect for all parameters. Soaking thyme stem cuttings at an IBA 250 ppm for 10 minutes gave the best results on plant length, the number of leaves, root length, and root dry weight, but soaking in water (without IBA) for 5 minutes was able to give the best number of percentage of life cuttings (85%) so that giving IBA had no needed.
Pengaruh Diameter Batang Bawah dan Hormon BAP (Benzyl Amino Purin) Terhadap Keberhasilan Sambung Pucuk Sawo Nabila Nuraini Fatikhasari; Karno Karno; Budi Adi Kristanto
Agrosains : Jurnal Penelitian Agronomi Vol 23, No 1 (2021): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v23i1.44696

Abstract

Sawo is a tropical native fruit from Indonesia, demand fot the fruit of sawo is increasing every year, one of the most effective ways to consumer demand is to vegetatif propagation that is top grafting. Top grafting can be accelerated by the addition of plant growth regulators. The purpose of this research was to know the success of top grafting of sawo plants at various sizes of diameter plant seedling and levels of BAP concentration. The method used was factorial complete randomized design with 2 factor,the first factor was diameter plant seedling (small, medium and big) and the second factor was concentrations of BAP (0, 100 and 200 ppm) with 5 replications. The result showed that diameter plant seedling small and medium gave a significant effect (P<0.05) on time of shoot, number of leaf and long of shoot. The levels of BAP concentration 100 and 200 ppm gave a significant effect on the time of shoot, number of shoot and long of shoot and percentage of success. There is interaction of diameter seedling and concentration of BAP against top grafting of sawo varieties jumbo vietnam.
Organic Fertilizer Improve the Growth, Physiological Characters and Yield of Pak Choy Endang Dwi Purbajanti; Susi Setyawati
Agrosains : Jurnal Penelitian Agronomi Vol 22, No 2 (2020): Agrosains : Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v22i2.43112

Abstract

Organic fertilizer expected increase number of growth and yield of pak choy. This research aims to study the influence of solid organic fertilizer and liquid organic fertilizer on growth, physiological characters, and yield of pak choy. The method used was Randomized Complete Design and three replications. The parameters observed were number of leaves, leaf area, chlorophyll content, Nitrate Reductase (NR), yield and harvest index. The result showed that the highest leaf number with 13.3 leaves was achieved by combination of SOF 20 t.ha-1 and LOF 3 times a week.  The largest leaf area was 208.44 cm2due to the application of Solid Organic Fertilizer 20 t.ha-1.The largest chlorophyll content was 0.84 mg.g-1 due to the combination treatment of SOF 20 t.ha-1 and LOF 3 times a week.  The largest NR of Pak choy is 3.51 µ mol NO2.hr-1 due to the combination treatment of SOF 20 t.ha -1 and LOF 3 times a week. The highest yields of pak choy is 29.79 kg.plot-1 is due to combination treatment SOF of 20 t.ha -1 and LOF 3 times a week, the highest harvest index was 94.6% due to combination treatment of SOF 20 t.ha -1 and LOF 3 times a week.
Pertumbuhan dan Hasil Tanaman Pakchoy Pada Tanah Berpasir Dengan Pemberian Biochar dan Pupuk Kandang Sapi Eva Aprilia Saesarini Pangaribuan; Adriani Darmawati; Susilo Budiyanto
Agrosains : Jurnal Penelitian Agronomi Vol 22, No 2 (2020): Agrosains : Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v22i2.42093

Abstract

Sandy soil is very difficult to remain the water and nutrients so that leaching often occurs before nutrients absorbed by the roots. It can be happen because sandy soil has many macro pores in the soil. This research was aimed to study the effect of biochar and cow manure fertilizer for growth and products of Brassica rapa L. plants on sandy soil. The method used was factorial completely randomized design with 2 factors. This first factor was type of biochar (paddy husk biochar and corn cobs biochar) and the second factor was dosage of cow manure fertilizer (5 tons/ha, 10 tons/ha, 15 tons/ha, 20 tons/ha, 25 tons/ha). The result showed that the application of cow manure fertilizer had significant effected on bulk density and soil porosity. The interaction between the type of biochar and dosage of cow manure fertilizer had significant effect on ground water content. The application of biochar and high doses of cow manure fertilizer resulted in increased ground water content on sandy soil.  The type of biochar and dosage of cow manure fertilizer had no significant effect on the nitrogen uptake, plant height, number of leaves, and crown fresh weight.
Efikasi Beberapa Agens Hayati Terhadap Penekanan Pertumbuhan Pyricularia grisea Secara In Vitro Shyntiya Ayu Lestari; Umi Kalsum; Evan Purnama Ramdan
Agrosains : Jurnal Penelitian Agronomi Vol 23, No 1 (2021): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v23i1.48174

Abstract

The demand for rice as an important food crop in Indonesia is still constrained by the attack of blast disease caused by Pyricularia grisea. Controlling using synthetic chemical pesticides has a negative impact on the environment so that the use of biological agents is an alternative option. This study aims to determine the effectiveness of several biological agents against the pathogen P. grisea that causes blast disease in rice plants in vitro. The study used a completely randomized design (CRD) with 6 levels of treatment and was repeated 3 times using the dooble culture method. The results of the study showed that the inhibition of P. grisea was the highest in the treatment of P. grisea × Trichoderma sp. and P. grisea × Gliocladium sp. namely 67.04% and 51.85% compared to other treatments. The P. polymyxa and P. fluorescence treatments showed low inhibition, namely 23.70% and 28.89%. Biological agents Trichoderma sp. and Gliocladium sp. able to inhibit the growth of the fungus P. grisea. Each biological agent has a different percentage of inhibition in that caused by the inhibitory mechanism of the biological agent.
Keragaman Serangga di Pola Pertanaman Tumpang Sari Kedelai-Titonia Putri Mustika Sari; Adriansyah Yoesoep; Lisdayani Lisdayani
Agrosains : Jurnal Penelitian Agronomi Vol 23, No 1 (2021): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v23i1.47920

Abstract

Plants that have a wide range of insect presence, decreased insect diversity and abundance were so few consequenced because the absence of one insect species can be replaced by the presence of another. The bad consequences that occur are the types of plants that have specific insect specificities because the absence of these insects will cause the failure of plant pollination and will directly cause a decrease in crop production. This study aimed to determine the diversity of insect species that come in the soybean-tithonia intercropping. The method was used direct observation in tithonia-soybean intercropping, took insects using a sweep net in the morning. The results showed that there were 15 types of insects identified, namely Epilachna sp.; Coccinella sexmaculata; Coccinella transveralis; Verania lineata; Ropalidia fasciata; Priocnemis sp.; Naupactus leucoloma; Piezodorus guildinii; Bemicia tabaci; Agromyza phaseoli; Spodoptera sp.; Nezara viridula; Paederus fusipes; Hylaeus sp.; and Trigona sp. The range of results of the calculation of the diversity index showed that the five treatments in intercropping plants had the same abundance. So it was needed to calculate the highest diversity index value or maximum H expressed in Ln S. The maximum H value in this study is 2.708, which is a measure of moderate species diversity (1<H’<3).
Identifikasi dan Deskripsi Tanaman Umbi-Umbian Pengganti Karbohidrat di Kabupaten Trenggalek Evy Latifah; PER Prahardini
Agrosains : Jurnal Penelitian Agronomi Vol 22, No 2 (2020): Agrosains : Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v22i2.43787

Abstract

The programs to increased food diversification through policies to accelerate diversification of food consumption based on local resources as a substitute for rice. The tubers that have been widely used by the community are cassava, sweet potato and potato. However, there are still many other yam plants that have not been maximally utilized and developed.  Thus it is necessary to carry out research aimed at knowing the identification and description of tuber crops, especially in several sub-districts in Trenggalek Regency. The determination of the research area was carried out by using purposive sampling method by coordinating with the Trenggalek Regency Agriculture Office, then to obtain data on the potential area of tubers was carried out by sampling using the snowball sampling method. From the results of the study, it is known that Munjungan sub-district is one of the districts that has the most land area (154.80 km2) compared to other sub-districts in Trenggalek Regency so that it is able to produce the production of several tuber commodities including uwi, gembili, gadung, suweg and bentoel so it needs development for this tubers in the region.

Page 10 of 17 | Total Record : 163

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