Subagiya Subagiya
Department of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret

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Journal : Agrotechnology Research Journal

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (625.376 KB) | DOI: 10.20961/agrotechresj.v1i1.18866

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (197.056 KB) | DOI: 10.20961/agrotechresj.v1i2.18878

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.977 KB) | DOI: 10.20961/agrotechresj.v1i2.18890

Abstract

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.