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Gontor AGROTECH Science Journal
Published by Universitas Darussalam Gontor
ISSN : 2460495X     EISSN : 24775800     DOI : -
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Education
Gontor AGROTECH Science Journal (GASJ) is a sciencetific journal published biannual (june and december), covered but not limited issues in agronomy, integrated farming, sutainable agriculture, plant cultivation, soil science, plant protection, pest and diseases. GASJ published research article, short notes, review papers or review concept in above mentioned subjects
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Articles 5 Documents
 1 
Search results for , issue "Vol 7, No 2 (2021): December 2021" : 5 Documents clear
Analysis of the Movement of Rice Field Rats (Rattus argentiventer) Using the Linear Trap Barrier System Hamdan Maruli Siregar; Swastiko Priyambodo; Dadan Hindayana
Gontor AGROTECH Science Journal Vol 7, No 2 (2021): December 2021
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v7i2.6208

Abstract

Linear Trap Barrier System (LTBS) is an innovative control technology developed using a trap system to control the movement of rice field rats. This study aims to determine the catch pattern and catch direction of rice field rats in several phases of rice plant growth. The experiment carried out was the installation of 6 LTBS units in 2 types of rice field rats habitat, i.e., village border and irrigation embankments. LTBS was installed in 3 phases of rice plant growth, i.e., vegetative, early generative, and late generative. The results showed that the installation of LTBS in both habitats had the same catch pattern, i.e., the highest percentage of rat catch occurred in the early generative phase. Likewise, the direction of rat catch in each phase of rice growth also showed the same pattern, i.e., the number of rats caught in the entry trap was relatively the same as the number of rats caught in the exit trap.
Effect of The Type Impermeable Storage Container on The Quality of Rice Seeds Hairu Suparto; Riza Adrianoor Saputra; Novitriani Saragih
Gontor AGROTECH Science Journal Vol 7, No 2 (2021): December 2021
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v7i2.6524

Abstract

Rice as a food source that provides carbohydrates for the people of Indonesia, especially South Kalimantan, needs to be increased in production so that the community's needs can be met. The quality of seeds will determine the productivity and quality of seeds. Storage treatment is one way that can be done to maintain seeds until the seeds are planted, but storage treatment that is too long will cause seed deterioration or seed viability to decrease. The decline in seed quality caused by keeping in open spaces storage causes fluctuations in temperature and humidity due to direct interaction with the environment. Efforts to control factors that can affect the rate of seed deterioration can be executed, among others, by using an impermeable storage container. Impermeable storage containers do not support the exchange of air from the environment to the inside of the storage container. The purpose of this study was to determine which type of impermeable storage container is best for the quality of rice seeds. The research has been at the Laboratory of Center for Supervision and Certification of Food Crops and Horticulture Seeds, South Kalimantan Province, Banjarbaru City and used a one-factor CRD with w0 (+) (cans), w0 (-) (plastic sack), w1 (glass jars), w2 (plastic jars) and w3 (aluminum foil). The results of the study indicated that the use of impermeable storage containers had a significant effect on moisture content, germination, and maximum growth potential of rice seeds. The use of the best impermeable storage container for the moisture content of rice seeds in the storage period of 45 days after storage (das) was found in the w3 treatment (aluminum foil) of 11.63%, while the parameter of germination in the 15 das was 63.83%, the maximum growth potential in the storage period of 45 and 90 das was found in the w1 treatment (glass jar) of 73.50% and w0 (+) (cans) of 70.69%.
Inbreeding Depression Test in Phenotypic Characters of Maize Plants from Selfing and Open Pollinated fitri ekawati; Doni Hariandi; Irfan Suliansyah
Gontor AGROTECH Science Journal Vol 7, No 2 (2021): December 2021
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v7i2.5167

Abstract

The initial step in the assembly of hybrid maize is the formation of inbred lines. This research aims to see the differences in phenotypic characters and to determine the percentage of inbreeding depression between selfing and open-pollinated plant populations. Research activities have been carried out in the cornfield of Nagari Sitiung, Sitiung District, Dharmasraya Regency, West Sumatra. The materials used were F2 maize selected from a cross between BSM0729S3 and BAP27799 and maize S4 from BSM0729S3 (female parent). The research was conducted using a T-test, namely open-pollinated (T1) and selfing (T2). After the T-test was performed, the percentage of inbreeding depression was calculated for each observation variable. The results showed that the open-pollinated treatment was significantly different from the selfing treatment on the variables of plant height, ear height, anthesis time, silking time, harvesting age, ear weight per plant, length and diameter of the ear, kernel row number, and intensity of anthocyanin staining on hair, tassels, and roots. The magnitude of the decrease in vigor in the open-pollinated treatment was smaller than the selfing treatment on all observed variables except for the anthocyanin intensity variable in tassel and roots. Therefore, it is necessary to do further selfing on the S4 population to obtain uniform pure lines and mass selection on the F2 population to produce a uniform maize population.
Effect of Liquid Media Formulations in the Growth of Biological Agents Derived from Trichoderma sp. and Gliocladium sp. and Their Potential in Controlling Alternaria sp. Leaf Spot on Apple Unun - Triasih
Gontor AGROTECH Science Journal Vol 7, No 2 (2021): December 2021
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v7i2.5961

Abstract

Several types of antagonistic fungi that are used as biological agents to control plant diseases include Trichoderma sp. and Gliocladium sp. But in its growth, it requires alternative media that are easy and cheap to obtain, one of which is the use of rice washing water and coconut water. The purpose of this study was to determine the potential of liquid media for washing rice water and coconut water on the growth of Trichoderma sp. and Gliocladium sp. The test results showed that the conidia density of the fungus Trichoderma sp. Ranged from 2,53 to 9,19 times that of the control, Gliocladium sp. 1,35 – 3,73 times as much. The pH of acidic media can produce the highest wet weight and dry weight  at P5, namely Trichoderma sp. 10.67 grams of wet weight and 0,26 grams at pH 5,01. Gliocladium sp. Has the highest wet weight at P5, namely 24,25 grams and 2,73 grams dry weight. Antagonist test against Alternaria sp. best to use Trichoderma sp. 79,39%. The conclusion of this test is the fungus Trichoderma sp. and Gliocladium sp. can grow in all media compositions except in P0 treatment (control) because mycelia cannot grow in sterile water and has the ability to inhibit the growth of Alternaria sp. 
Use of Bacillus firmus E65-Talc Based Formulation for The Management of Bacterial Leaf Blight Disease yadi - suryadi; Dwi Ningsih susilowati; I Made - Samudra
Gontor AGROTECH Science Journal Vol 7, No 2 (2021): December 2021
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v7i2.5993

Abstract

It has long been known that bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo), is major bacterial diseases which occured widespread in rice growing countries. This study was performed to determine effect of biological control using endophyte bacteria formulated in talc-based powder against Xoo in rice agroecosystem which grown under organic system of rice intensification (SRI) in Cianjur-West Java. Carriers formulation of talc-based powder was prepared to contain endophytic bacteria of Bacillus firmus (isolate E65) which was previously isolated from the rice field. BLB disease suppression was ranged 2.14% to 97.15%. among cultivars tested, with the average BLB severity among six cultivars was 9.79%. The cv. Inpari 10 (Moderate) showed the lowest disease severity compared with that of resistance cv. Sintanur, Mekongga and Code. This suggests that the biocontrol efficacy of formulation B. firmus E65-talc-based powder was not affected by cultivar susceptibility. The antagonistic bacteria formulation yields up to 9%. The highest yields for each respective treatment treated with talc based-bacterial formulation were obtained using cv. Inpari 10 and Cisantana. The scale-up of biocontrol products that prolongs biocontrol activity may challenged with shelf life of formulation. This study showed advantages of single cultures of bacterial antagonist used in a talc-based formulation is possible to suppress BLB disease and promotes rice yield under SRI field condition.  

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