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Efektifitas Cuka Kayu sebagai Pestisida Nabati dalam Pengendalian Hama Crocidolomia Pavonana dan Zat Perangsang Tumbuh pada Sawi Nunung Ambarwati; Subagiya Subagiya; YV Pardjo NS
Agrosains : Jurnal Penelitian Agronomi Vol 15, No 1 (2013): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Cabbage caterpillar pests (Crocidolomia pavonana) is one of the main obstacles inhibiting the production both in quality and quantity. Control is generally done with chemical pesticides that can harm the environment and humans. Wood vinegar is an agricultural waste that is used to increase the quantity and quality of mustard plant. This study aims to determine the effectiveness of wood vinegar as a botanical pesticide in the mustard plant and the PGR and the most effective concentration. Research using completely randomized design with 7 degree treatment laboratory tests (mortality, biology, kemampua eating) and 8 standard treatment field test (the intensity of pest attack, plant height, leaf number and weight of mustard plant), repeated 3 times. The results showed that wood vinegar is not effective as a pesticide plant pest control C.pavonana the mustard. Wood vinegar speed up the life cycle C. pavonana. Wood Vinegar can help to enhance and augment leaf mustard plant so that it can be effective as an aphrodisiac mustard plant grows. The greater the concentration of a given wood vinegar, increased growth (both height and number of leaves of mustard plant).

Toksisitas Ekstrak Biji Mahoni Terhadap Ulat Plutella xylostella pada Daun Kubis Ayu Putri Dwi Ariyanti; Subagiya Subagiya; Ato Sulistyo
Agrosains : Jurnal Penelitian Agronomi Vol 22, No 1 (2020): Agrosains : Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Plutella xylostella is one of cabbage’s main pests. Botanical insecticides as alternative of chemical insecticides need to be expand, one of them is mahogany seed extract. Mahogany seed exctract contains saponin and flavonoid as reported mortal to P. xylostella. This study aimed to know the effective concentration of mahogany seed extract to manage P. xylostella different larva instar and to know LC50 value of mahogany seed extract to P. xylostella. This method used was completely randomized experimental design (CRD). Two factors used were mahogany seed exctract concentrations (0 gL-1, 5 gL-1, 10 gL-1, 20 gL-1, and 40 gL-1) and larva instar (first and third instar). Each treatment repeated four times. The results showed that percentage of larva mortality first instar higher than third instar. Concentration 20 gL-1 of mahogany seed exctract effective to kill first instar larva, and concentration 40 gL-1 effective for third instar. Percentage of pupa mortality highest in concentration 10 gL-1 for first instar and concentration 40 gL-1 for third instar larva. Antifeedant increased as concentration given, while the eating ability that higher in third instar was decreased. LC50 for first instar larva was 2,6 gL-1 and third instar was 13,7 gL-1, meaned that mahogany seed extract more toxic to first instar than third instar larva.

Efikasi Dry Ice terhadap Sitophilus oryzae dan Tribolium castaneum pada Beras Kemasan Plastik di Dataran Tinggi Aisyah Aisyah; Subagiya Subagiya; Ato Sulistyo
Agrosains : Jurnal Penelitian Agronomi Vol 18, No 1 (2016): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Sitophilus oryzae and Tribolium castaneum are pest that can always attack rice in long periode storage. Rice in the plastic packaging that spread in market has not did fumigation, so the pest can attack faster than rice in sack packaging. This research was aimed to understand the effectiveness of dry ice to attack S. oryzae and T. castaneum with effect of dry ice to rice in plastic packaging at high land. This research used completely randomized design (CRD) with two factors. The first factor was dose of dry ice and second factor was wrapper of dry ice. The data was analyzed in variance analysis then continue with Duncan Mean Range Test (DMRT). The result showed that dose of dry ice 10 g/rice 5 kg can effect for 90,83 % mortality of S. oryzae and T. castaneum but it have not made effect for imago and larvae population. Also, dry ice was not make effect for rice weight and rice quality (color of rice, scent of rice and taste of rice).

Respon Populasi Kutu Daun Persik Terhadap Pemberian Beberapa Jenis Ekstrak Kulit Jeruk pada Cabai Nur Raisa Amalina; Subagiya Subagiya; Ato Sulistyo
Agrosains : Jurnal Penelitian Agronomi Vol 20, No 1 (2018): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Myzus persicae is the main pest in chili which causes decreasing production and qualities of chili. The was aimed to know the effect of Pomelo and Orange’s peel extract to controlling green peach aphids population. The research was conducted in screen house located in Colomadu, Karanganyar regency from October 2017- January 2018. This research used Randomized Complete Design with 2 factors i.e variety of orange’s peel extract and levels of concentration. The various Citrus’s peel extract consisted of Pomelo’s peel extract and Orange’s peel extract. Levels of concentration from each extracts i.e 1%, 2%, 4%, 8%, and 16%. Each treatment replicated 5 times. The result showed that Citrus peel extracts had effect on the green peach aphid population and had no effect on the growth of chili. The LC50 value of Pomelo and Orange’s peel extracts were 4,77% and 5,56%. Pomelo and orange peel extract treatment on differrent concentration was not give effect on the percentage of the attack intensity.

Pengaplikasian Dry Ice Untuk Pengendalian Cylas formicarius pada Ubi Ketela Rambat Afni Kurnia Firmani; Subagiya Subagiya; Ato Sulistyo
Agrosains : Jurnal Penelitian Agronomi Vol 20, No 2 (2018): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Cylas formicarius is the main pest of sweet potatoes especially in storage. Damage from the pest attacks can reduce yields up to 97% and even minor damage causes sweet potatoes cannot be consumed because they taste bitter and toxic. Warehouse pest control such as C. formicarius is generally carried out by fumigation. Dry ice is a solid CO₂ that can be used as a fumigant to control warehouse pests. This study aims to determine the application of dry ice as fumigant and different storage places for C. formicaius in sweet potatoes. The variables observed C. formicarius population and mortality, weight loss, decrease in water content, level of damage to sweet potatoes and taste testing. The results showed that the population of C. formicarius in control higher than the other treatments, in the storage area in the population space C. formicarius is higher than in dark storage. Mortality in the treatment of giving dry ice reached 100% at the dose of 5g, 10g and 15g. Weight reduction and decrease in water content in sweet potatoes correlate with each other where in the control treatment changes in weight and water content are highest compared to other treatments. Storage places have no effect on weight loss and loss of water content in sweet potatoes. Taste of sweet potatoes before and after the shelf life with the dry ice application has not changed.

Toksisitas Biji Srikaya Terhadap Kumbang Tepung (Tribolium Castaneum) Pada Gandum Subagiya Subagiya; Ato Sulistyo; Umi Nurchasanah
Agrosains : Jurnal Penelitian Agronomi Vol 20, No 1 (2018): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Wheat (Triticum aestivum) is one of main food source with carbohydrates which is consumed by world people. The loss of wheat during storage is caused by pests attack. Flour beetle (Tribolium castaneum) is one of the main pests of wheat flour. Biological insectisidies is a solution to solve the attack of warehouse pests. The aim of research are to study the effectiveness of srikaya seeds on T. castaneum in wheat flour and to study the quality of wheat flour after the application srikaya seeds to T. castaneum. The research were be held in Pandan Rejo Village, Kebakkramat Sub-District, Karanganyar Regency on 105 asl altitude during September until October 2017. The research use Complete Randomized Design (CRD) with two factors of four repetitions. Dose treatment for Srikaya seeds consist of four levels of controls, 2.5 g/100 g wheat, 5 g/100 g wheat, and 10 g/100 g of wheat and the form of application consist of two kinds are 0.5 mm srikaya seed and 1 mm srikaya seed. Research variables which are observed were toxicity srikaya seed, imago mortality, moisture content, wheight shrinkage of wheat, color of wheat, and odor of wheat. The result show that LD50 of srikaya seed on a form 0.5 mm is 3.97 g/100 g wheat and form 1 mm is 4.70 g/100 g wheat. The application of the srikaya seed to minimize changes in quality wheat. The lowest shrinkage weight is 2.43 g and highest on the control of wheat color 5.805 g. control treatment from while to white murky scales (2). Scent control treatment of wheat does not become musty semlling scented (1).

Hubungan Tingkat Serangan Ulat Kipat (Cricula Trifenestrata) terhadap Hasil Mete Rina Siswanti; Supriyadi Supriyadi; Subagiya Subagiya
Agrotechnology Research Journal Vol 1, No 1 (2017): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Cricula trifenestrata Helfer (Lepidoptera;Saturniidae) are insect pest of avocado, walnuts, and cashews. C. trifenestrata is most destructive insect pest of cashews, but there is no serious control by farmers. The questions about the effect of C. trifenestrata to cashew’s yield. This study aimed to determine the correlation and regression attack degree of C. trifenestrata to the number of flowers and seeds produced by cashew. Research was conducted by a survey of 30 cashew plants with 6 samples unit at each plant. The parameters observed in this study were plant varieties, plant age, time appears caterpillar, caterpillar number, the attack rate, days to flowering, the number of bunches, flower, and seed. The data were analysed by the correlation and regression analysis. The results showed a positive correlation between the degree of caterpillar attacks to number of flowers and seeds. Increasing degree of attacks may increase the number of flowers and seeds.

Potensi Abu Daun Bambu dan Kompos Jerami untuk Mengendalikan Wereng Coklat Ade Brian Nugraha; Retno Wijayanti; Subagiya Subagiya
Agrotechnology Research Journal Vol 1, No 2 (2017): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

This study aims to determine the effect of the bamboo ash and straw compost on brown planthopper and rice production. This research was conducted in Bakaran, Sukosari Village, Jumantono, Karanganyar in 12ndDecemberMarch 2017. The study was conducted using Complete Randomized Block Design (RCBD) in paddy fields consisting of 16 plots, each was 16 m2 with Bamboo Leaftreatment, Straw Compost, and Chemical Silica with SiO2of 200 kg-1ha dosage. The variables observed were: Population of brown planthopper, stem hardness, plant height, number of tillers, number of productive tillers, weight of 100 seeds, weight of filled seed, hollow seed weight and percentage of hollow seeds. The data obtained were analyzed by Analysis of Variance (ANOVA) and if there was a significant difference, it followed by Duncans Multiple Range Test (DMRT) at 5% level. The results showed that bamboo leaf ash and straw compost not significan increase the hardness of the rice plant stems and brown planthopper population. Straw compost has the highest potential compared to other treatments because it produces the hardest stem rice and the lowest brown planthoppers population at 11 Weeks. The application of silica from various sources has no direct role in rice production.

Kajian Penggunaan Debu Limbah Tembakau dan Pemberian Vermikompos Terhadap Populasi Ditilenchus pada Bawang Merah Yanuar Mahir Hermawan; Subagiya Subagiya; Ato Sulistyo
Agrotechnology Research Journal Vol 1, No 2 (2017): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Shallot is a high value commodity for Indonesian people. The rate of shallot production is considered quite slow considering of the increasing population, income, and the area of shallot cultivation. On the cultivation of shallots common obstacle of Ditylenchus that cause damage to the stems and shallot bulb. The dust of tobacco and vermicompost waste is known to suppress the development of nematodes. This study aims to examine the use of tobacco ash waste and vermicompost on the population of Ditylenchus nematodes as well as the growth and yield of shallot. This research was conducted at Faculty of Agriculture, Sebelas Maret University (UNS) Surakata in August to December 2016. The study was performed using Completely Randomized Design (CRD) with treatments in the form of tobacco dust, vermicompost, combined tobacco dust and vermicompost and control treatment. Data were analyzed using variance test (F test) with 5% level. If the result shows significant effect then followed by DMRT of 5% level. The result of this research showed that the use of combination of tobacco ash waste and vermicompost could decrease nematode ditylenchus population in the soil. The use of tobacco ash waste could decrease total of parasite nematode population on plant tissue. The treatment didn’t give any effect to shallot’s yield. Shallot’s yield was not influenced by the existence of nematode ditylenchus and another on plant tissue.

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