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All Journal Jurnal Penelitian Karet International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET)
Murni Sari Rahayu
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Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Economics, Econometrics & Finance Education

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HUBUNGAN SUKROSA DENGAN PRODUKSI LATEKS PADA TANAMAN KARET KLON PB 260 UMUR BERBEDA Yayuk Purwaningrum; Yeni Asbur; Murni Sari Rahayu; Rahmi Dwi Handayani Rambe; Dedi Kusbiantoro; Khairunisyah Nasution
Jurnal Penelitian Karet JPK : Volume 39, Nomor 2, Tahun 2021
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v39i2.752

Abstract

PB 260 atau dikenal dengan klon quick starter memiliki masa gugur daun lebih cepat dibandingkan dengan jenis klon lainnya. Pada penelitian ini bertujuan untuk menentukan hubungan antara perbedaan umur tanaman karet klon PB 260 dengan kadar kandungan sukrosa lateks yang dihasilkan. Penelitian ini dilakukan di PT. Perkebunan Nusantara III (Persero) Afdeling I, Bandar Betsy, Kabupaten Simalungun, pada ketinggian 900 m di atas permukaan laut. Tanaman yang diamati yaitu jenis klon PB 260 dengan waktu tahun tanam 2004, 2005, 2010 dan 2011 yang memiliki lingkar batang 60-75 cm dan dihitung dengan tinggi 130 cm di atas permukaan tanah. Metode penelitian ini ditentukan dari analisis uji korelasi dan regresi. Hasil penelitian diperoleh hubungan antara peran dari kandungan sukrosa terhadap produksi lateks klon PB 260 diperoleh waktu tahun tanam 2004 yang kecil hanya 3%, tahun tanam 2005 sebesar 14%, 2010 dan 2011 sangat kecil hanya 0,3%.
BREAKING SEED DORMANCY USING CHEMICAL, PHYSICAL, AND ORGANIC SCARIFICATION METHODS ON THE GROWTH OF AREN SEEDS (Arenga pinnata Merr.) Hetty Lisma Evianti Manurung; Rahmad Setia Budi; Murni Sari Rahayu
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 4 No. 9 (2025): AUGUST
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijset.v4i9.988

Abstract

Prolonged seed dormancy is an obstacle in the provision of quality seedlings. Therefore, this study was conducted to accelerate the germination process of Arenga pinnata Merr. seeds through various treatments. This study aims to evaluate the response of chemical, physical, and organic dormancy breaking on the growth and development of Arenga pinnata Merr. seeds. The method used was a Non-Factorial Complete Randomized Design with seven treatments: seed soaking in 3% H₂SO₄ solution (6 hours), 0.5% KNO₃ (24 hours), 3% HCl (6 hours), sanding (sandpaper), 100% red onion extract (24 hours), 100% palm sap (24 hours), and 100% coconut water (24 hours). The results showed that seed soaking in 3% HCl or sandpaper abrasion yielded the best results in terms of germination rate, although there was no statistically significant effect; these treatments also successfully reduced the dormancy period of palm seeds. Additionally, soaking with 100% palm sap produced the tallest plants at 8 MST and 12 MST. This study is expected to provide useful information for the development of more efficient and practical palm seedling propagation technology.
INFLUENCE OF RAINFALL ON DOWNY MILDEW INTENSITY, PRODUCTIVITY, AND SYMPTOMS OF Peronosclerospora spp. ATTACK IN MAIZE CROPS IN SIMALUNGUN REGENCY Murni Radiah; Syamsafitri; Murni Sari Rahayu; Romi Fahri
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 4 No. 8 (2025): JULY
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijset.v4i8.869

Abstract

Maize is one of the world's food crops, and Simalungun Regency is one of the corn production centers in Indonesia. Corn production in Simalungun Regency has decreased due to various factors including downy mildew. Downy mildew disease is caused by Peronosclerospora spp. its development is increasingly rapid supported by a high humidity environment, while the purpose of the study was to examine the effect of rainfall on downy mildew disease intensity, productivity, production, and symptoms of corn plant attack in different locations.Research method: Observations of correlation and regression tests of rainfall on disease intensity, productivity, production, and harvest area of corn were analyzed using Minitab statistical application.The results showed that there is a relationship between rainfall and downy mildew intensity, production, productivity, and harvest area of corn plants. The intensity of downy mildew was highest in Tanah Jawa sub-district with an average disease intensity of 7.81%, this was due to the fact that no eradication was done on plants infected with Peronosclerospora spp. The symptoms of attack found at each observation location had the same symptoms.
Co-Authors Dedi Kusbiantoro Hetty Lisma Evianti Manurung Khairunisyah Nasution Murni Radiah Rahmad Setia Budi Rahmi Dwi Handayani Rambe Romi Fahri Syamsafitri Yayuk Purwaningrum Yeni Asbur