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Mardiana Wahyuni
Sekolah Tinggi Ilmu Pertanian Agrobisnis Perkebunan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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EFEKTIVITAS BIOFUNGISIDA Trichoderma koningii TERHADAP PENCEGAHAN PENYAKIT JAMUR AKAR PUTIH DI PEMBIBITAN BATANG BAWAH TANAMAN KARET (Hevea brasiliensis) Gema Tarigan; Mardiana Wahyuni; Guntoro .
Jurnal Agro Estate Vol 3 No 1 (2019): Juni 2019
Publisher : Institut Teknologi Sawit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.327 KB) | DOI: 10.47199/jae.v3i1.16

Abstract

One of the main obstacles in rubber cultivation is the white root fungus (JAP) attack which caused by Rigidophorus ligonosus. This pathogen infects rubber plants from the nursery until the mature plants. Efforts to control the disease have been carried out by chemical, technical culture and use of biological agencies. This research was conducted at the STIP-AP Medan in January 2017 to June 2017, this study used a non-factorial Randomized Block Design (RBD) with four replications and four treatments. Using Trichoderma koningii with somes doses were 20 grams, 30 grams, and 40 grams/seedling. The results of this study indicate that the biofungicide application of Trichoderma koningii 30 g/seedling produces the greatest inhibition of the rubber plants seedling nursery against the growth of pathogens Rigidoporus lignosus.
KORELASI KADAR UNSUR HARA DAUN KELAPA SAWIT TERHADAP KADAR MINYAK SAWIT MENTAH Ika Ucha Pradifta Rangkuti; Mardiana Wahyuni
Jurnal Agro Estate Vol 3 No 1 (2019): Juni 2019
Publisher : Institut Teknologi Sawit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.441 KB) | DOI: 10.47199/jae.v3i1.17

Abstract

Mesocarp or fruit flesh is the main component of the cultivation of oil palm which is extracted to Crude Palm Oil (CPO). The amount of CPO produced from processing in palm oil mills is influenced by the quality of Fresh Fruit Bunches (FFB). Some factors that influence the quality of FFB are the type of crossing, plant age, maintenance level and fraction of fruit maturity. Adequacy of nutrients N, P, K, and Mg play a role in fruit formation and are expected to increase levels of CPO. In connection with this matter, research on the relationship / nutrient correlation with CPO content is needed. This research was conducted in October 2017 - March 2018 in the field with land suitability classes S1 (Maradja Hill), S2 (Limau Mungkur), S3 (Bah Birung Ulu) and STIPAP LPP Medan Practice Gardens. Processing data with single and multiple linear regression. Leaf samples were analyzed with the Sochlet apparatus in STIPAP Processing Laboratory. In general, the average nutrient content of leaves N, P, K were the normal category and nutrient Mg, Cl were deficiency category. The level of CPO (oil / mesocarp) varies from 31.14% - 59.59%. With single nutrient regression N, P, K, Cl has a positive correlation with CPO levels while Mg is negatively correlated. Multiple regression analysis of nutrient N, P, K, Mg and Cl has significant effect on O / N with a correlation coefficient of 0.744.
EFEKTIVITAS BEBERAPA DOSIS BIOFUNGISIDA TRIKO SPPLUS TERHADAP JAMUR AKAR PUTIH (Rigidoprus lignosus) DI PEMBIBITAN BATANG BAWAH TANAMAN KARET (Hevea Brasuliensis) Mardiana Wahyuni; Rahmad Habibi Nauli Harahap
Jurnal Agro Estate Vol 1 No 2 (2017): Desember 2017
Publisher : Institut Teknologi Sawit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (533.299 KB) | DOI: 10.47199/jae.v1i2.85

Abstract

One of the main constraints on the cultivation of rubber plants are fungal root diseases (JAP) caused by R ligonosus. This Pathogen infecting plants in the nursery until since rubber plants. The disease control efforts have been carried out by means of chemical, technical culture and the use of biological agents. JAP is (soil borne disease) so it's not easy to control it. This research was conducted on the campus of STIP-AP Medan in January 2017 until June 2017, The study used a Randomized Design Group (RAK) factorial with 5 teatment and four replicatios. Use the trico SP plus with a dose of 50 g, 75 grams, 100 grams and 125 grams. The results of this research shown that the application of Biofungisida trico SP plus (125 grams) is the most effective treatment against pathogen Rigidoporus lignosus.
Co-Authors Gema Tarigan Guntoro Guntoro Ika Ucha Pradifta Rangkuti Rahmad Habibi Nauli Harahap