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Stanley A.F. Walingkas
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Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Social Sciences

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RESPONS NAPHTHALEN ACETIC ACID DAN UNSUR MIKRO MIKOMBI SUPER TERHADAP CHERELLE WILT PADA TANAMAN KAKAO Walingkas, Stanley A.F.; Rantung, Meity
EUGENIA Vol 18, No 2 (2012)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.18.2.2012.3953

Abstract

ABSTRACT This study aims to determine the effect of plant growth regulators and micro elements to cherelle wilt in cacao plants as well as finding the right business in tackling cherelle wilt in cacao plants. The research was carried out in the garden village folk Eris Eris Minahasa district for 8 months from January to August 2009. Spraying micro-nutrient elements is necessary to reduce cherelle wilt because the various treatments for the first observation is not significantly different, but the observations into two to seven observations to indicate a significant difference between treatments (percentage cherelle wilt on treatment without nutrient elements higher than sprayed). While spraying the treatment factor of plant growth regulators (NAA) is not necessary because the first observation and the two had no significant effect on the percentage of cherelle wilt affected only the third observation and further observations to a fourth, fifth, sixth and seventh again no effect. So is the treatment for fruit length and diameter showed that administration of the micro nutrients necessary for sprayed with micro nutrients result 22.10 cm higher than that is not sprayed is 19.43 cm. As for the diameter of the fruit is affected by plant growth regulators. Treatment is better than 200 ppm 100 ppm and 0 ppm (control). Keywords: NAA, cocoa, mikombi     ABSTRAK   Penelitian ini bertujuan mengetahui pengaruh pemberian zat pengatur tumbuh dan unsur mikro terhadap cherelle wilt pada tanaman kakao serta menemukan usaha yang tepat dalam menanggulangi cherelle wilt pada tanaman kakao. Penelitian ini dilaksanakan di kebun rakyat Desa Eris Kecamatan Eris Kabupaten Minahasa selama 8 bulan sejak Januari – Agustus 2009. Penyemprotan unsur hara mikro perlu dilakukan untuk mengurangi cherelle wilt sebab pada berbagai perlakuan untuk pengamatan pertama tidak berbeda nyata namun pada pengamatan ke dua sampai pengamatan ke tujuh menunjukkan adanya perbedaan nyata antar perlakuan (prosentase cherelle wilt pada perlakuan tanpa unsure hara lebih tinggi dari yang disemprot). Sementara faktor penyemprotan dengan perlakuan zat pengatur tumbuh (NAA) tidak perlu dilakukan sebab pengamatan pertama dan ke dua tidak berpengaruh nyata pada persentase cherelle wilt hanya berpengaruh pada pengamatan ke tiga dan selanjutnya pengamatan ke empat, ke lima, ke enam dan ke tujuh kembali tidak berpengaruh. Begitu juga perlakuan untuk panjang dan diameter buah menunjukkan bahwa pemberian unsur hara mikro perlu dilakukan sebab yang disemprot dengan unsur hara mikro hasilnya 22,10 cm lebih tinggi dari yang tidak disemprot yaitu 19,43 cm. Sementara untuk diameter buah dipengaruhi oleh zat pengatur tumbuh. Perlakuan 200 ppm lebih baik dari 100 ppm dan 0 ppm (kontrol). Eugenia Volume 18 No. 2  Agustus 2012 Kata kunci : NAA, kakao, mikombi
Peranan Poliembrioni Terhadap Produksi Benih Pada Tanaman Jeruk Siam (Citrus nobilis L.) Piri, David Gilbert Young; Raintung, Jeane S.M.; Walingkas, Stanley A.F.
AGRI-SOSIOEKONOMI Vol. 19 No. 1 (2023): Agri-Sosioekonomi
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.765 KB) | DOI: 10.35791/agrsosek.v19i1.46757

Abstract

This study aims to determine the growth of polyembryonic seeds in Siamese oranges and to study the growth of seedlings from polyembryonic seeds which will be used as good seeds in overcoming the problem of availability of Siamese orange seeds. The research was carried out from May to October 2022 at the Green House of the Faculty of Agriculture, Sam Ratulangi University and Eris Village, Eris District. The research method used a randomized block design (RBD) with 5 treatments repeated 4 times and found a total of 20 treatments, namely Z11, Z12, Z13, Z14, P21, P22, P23, P24, P31, P32, P33, P34, B21, B22, B23 , B24, B31, B32, B33 and B34. Data analysis used ANOVA analysis (analysis of variance). If it has no effect, then proceed with the BNT test at the 5% test level. The results showed that the growth of Siamese orange sprouts resulted in the growth of embryos up to 6 intact in one seed. Polyembryony, the ability to germinate seeds above 80.00% is one of the conditions for seeds to be recommended for seed sources 20.95%.
Pengaruh Jenis Dan Konsentrasi Auksin Terhadap Pertumbuhan Dan Perkembangan Tanaman Anggrek Dendrobium mirbelianum Secara In Vitro Galensong, Justio P.D.; Tilaar, Wenny; Rogi, Johannes E.X.; Lengkong, Edy F.; Walingkas, Stanley A.F.; Inkiriwang, Annatje E.B.
AGRI-SOSIOEKONOMI Vol. 20 No. 2 (2024): Agri-Sosioekonomi
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/agrsosek.v20i2.57367

Abstract

This study aims to determine the effect of auxin type and concentration on the growth and development of orchid plants. The research was conducted at the Tissue Culture Biotechnology Laboratory, Faculty of Agriculture, Sam Ratulangi University Manado, and was carried out over 2 months from July to August 2023. This study used a factorial experiment in a Completely Randomized Design (CRD) with 5 replications consisting of two factors. The first factor is the type of auxin: IAA (A1), NAA (A2), and IBA (A3), and the second factor is the concentration of each auxin: 1 ml/l (K1), 2 ml/l (K2), and 3 ml/l (K3). The data were analyzed using analysis of variance, and if the results were significant, a 5% Least Significant Difference (LSD) test was conducted. The results showed that there was an interaction between the type and concentration of auxin on variables such as the number of roots, root length, root emergence time, number of leaves, number of shoots, and shoot height. Similarly, there was an effect of auxin concentration on each type of auxin, but there was a significant effect of individual auxin types (IAA, NAA, and IBA) on the root formation of Dendrobium mirbelianum orchids, affecting variables such as the number of roots, root length, root emergence time, number of leaves, number of shoots, and shoot height.
PENGARUH PEMBERIAN PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) PADA PERTUMBUHAN BIBIT STEK STEVIA (Stevia rebaudiana Bertoni) Gabai, Maria; Sumayku, Bertje R.A.; Tulungen, Antje Grace; Tilaar, Wenny; Rogi, Johannes E. X.; Walingkas, Stanley A.F.
EUGENIA Vol. 30 No. 3 (2024): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.v30i3.58773

Abstract

Sweetleaf stevia (Stevia rebaudiana Bertoni) is one of the potential sugar-producing plants besides sugar cane which is widely used as a natural non-calorie sweetener. Propagation of stevia by shoot cuttings produces more uniform seedlings. Plant Growth Promoting Rhizobacteria (PGPR) contains a group of beneficial bacteria that live in the plant root ecosystem that can stimulate plant growth. This study aims to determine the effect of PGPR on the growth of stevia cuttings and the best concentration of PGPR on the growth of stevia cuttings. This study was conducted in February-May 2024 in Kolongan Atas II Village, Sonder District, Minahasa Regency, North Sulawesi Province. The study used a Completely Randomized Design (RAL), with 5 treatment levels, namely P0 = Control (Without PGPR), P1 = PGPR 10 ml/liter of water, P2 = PGPR 20 ml/liter of water, P3 = PGPR 30 ml/liter of water and P4 = PGPR 40 ml/liter of water. Each treatment was repeated 4 times.The results showed that the aplication of PGPR affected the growth of stevia cuttings. The best PGPR concentration for the growth of stevia cuttings was at a PGPR treatment concentration of 20 ml/liter of water.  Keywords: plant growth promoting rhizobacteria, stevia
Co-Authors Edy F. Lengkong Gabai, Maria Galensong, Justio P.D. Inkiriwang, Annatje E.B. Johannes E. X. Rogi Meity Rantung Piri, David Gilbert Young Raintung, Jeane S.M. Sumayku, Bertje R.A. Tulungen, Antje Grace Wenny Tilaar