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Paula Ch. Supit
Universitas Sam Ratulangi

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SUBTITUSI PUPUK KALIUM (KCL) DENGAN ABU PENGASAPAN KOPRA UNTUK MENINGKATKAN PRODUKSI TANAMAN WORTEL Demmassabu, Sofia; Tulung, Stella; Sumayku, Bertje; Supit, Paula Ch.
EUGENIA Vol 17, No 1 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.1.2011.99

Abstract

Research objectives were to study the interaction between fertilizing time and potasium fertilizer dosageand to evaluate the use of ash of copra fumigation to be potasium fertilizer substitute to increasingcarrot production. Randomized block design was used. The treatment was combination time ofapplication and dosage of fertilizer. Each treatment was repeated three times. The first factor was thetime of application consisted of the application at planting (A1) and application after two weeks (A2).The second factor was fertilizer dosage consisted of 100 % recomended potasium + 0 % ash of coprafumigation (B1), 75% recomended potasium + 25 % ash of copra fumigation (B2), 50% recomandedpotasium + 50 % ash of copra fumigation (B3), 25% recomanded potasium + 75 % ash of coprafumigation (B4), 0% recomanded potasium + 100% ash of copra fumigation (B5). Observed variableswere length of bulb (cm) , bulb diameter (cm), tuber fresh weight at haverst (g) and bulb yield per plot.The result showed that there was no interaction between time and dosage of fertilizer. Similarly, singlefactor both time and dosage of fertilizer did not affect the production of carrot. ABSTRAKTujuan penelitian ini untuk mempelajari pengaruh interaksi antara waktu pemberian dan dosis pupukkalium terhadap produksi tanaman wortel, dan mempelajari kemungkinan subtitusi pupuk kaliumdengan abu pengasapan kopra terhadap produksi tanaman wortel.Penelitian ini menggunakanrancangan acak kelompok dengan perlakuan kombinasi antara waktu aplikasi dan dosis pupuk kaliumyang di ulang 3 kali. Perlakuan tersebut adalah:Faktor A : waktu aplikasi yang terdiri dari 2 taraf, yaituA1 adalah aplikasi saat tanam dan A2 adalah aplikasi 2 minggu setelah tanam.Faktor B : dosis pupukyang terdiri dari 5 taraf yaitu: B1 = 100% Kalium anjuran + 0% abu pengasapan kopra, B2 = 75% kaliumanjuran + 25% abu pengasapan kopra, B3 = 50% kalium anjuran + 50 % abu pengasapan kopra, B4 =25% kalium anjuran + 75% abu pengasapan kopra, B5 = 0% Kalium anjuran + 100 % abu pengasapankopra, Variabel yang diamati : panjang umbi (cm), Diameter umbi (cm), berat segar umbi saat panen (g)dan hasil umbi per petak . Hasil penelitian menunjukkan bahwa tidak ada interaksi antara waktupemberian dan dosis pupuk terhadap variabel-variabel yang diamati : Panjang umbi, diameter umbi,berat segar umbi dan hasil umbi per petak. Demikian pula sebagai faktor tunggal baik waktu pemberianmaupun dosis pupuk tidak berpengaruh terhadap produksi tanam wortel.
PEMUPUKAN UREA DAN PACLOBUTRAZOL TERHADAP PERTUMBUHAN TANAMAN JAGUNG MANIS (Zea mays saccharata Sturt.) Tumewu, Pemmy; Supit, Paula Ch.; Bawotong, Ridson; Tarore, Anni E.; Tumbelaka, Selvie
EUGENIA Vol 18, No 1 (2012)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.18.1.2012.4147

Abstract

ABSTRACT The study aims to determine the response of sweet corn plants of urea fertilizer and the provision of Paclobutrazol. Randomized trials using Design Group (RAK) Factorial pattern. The experiments are a factor I (A): Nitrogen fertilizer, Ao = Without fertilization, A1 = 100 kg N / ha, A2 = 200 kg N / ha, and Factor II (B): The concentration of Paclobutrazol ie, Bo = Without Paclobutrazol, B1 = 500 ppm, B2 = 1000 ppm. Variables observed were: 1) Higher Plants, 2) The number of leaves. Data were analyzed using a variety of analysis followed by LSD 5%. The results showed that the interaction between nitrogen fertilizer and Paclobutrazol is not significant  on sweet corn plants but interaction on the number of leaves. Paclobutrazol independently affect the height of sweet corn plants. Giving Paclobutrazol 500 ppm and 1000 ppm to corn plants are shorter than without Paclobutrazol. Keywords: Nitrogen fertilizer, Paclobutrazol, and sweet corn crops ABSTRAK Penelitian bertujuan untuk mengetahui respon tanaman jagung manis terhadap pemupukan urea dan Paclobutrazol. Percobaan acak menggunakan Design Group (RAK) pola faktorial. Percobaan adalah faktor I (A): pupuk Nitrogen e Ao = Tanpa pembuahan, A1 = 100 kg N / ha, A2 = 200 kg N / ha, dan Faktor II (B): Konsentrasi Paclobutrazol yaitu, Bo = Tanpa paclobutrazol, B1 = 500 ppm, B2 = 1000 ppm. Variabel yang diamati adalah: 1) Tanaman tinggi, 2) Jumlah daun. Data dianalisis dengan menggunakan berbagai analisis diikuti oleh Uji Perbedaan Terkecil Real (LSD) 5%. Hasil penelitian menunjukkan bahwa interaksi antara pupuk nitrogen dan Paclobutrazol tidak nyata pada tinggi tanaman jagung manis tapi interaksi nyata pada jumlah daun. Paclobutrazol mempengaruhi tinggi tanaman jagung manis. Pemberian Paclobutrazol 500 ppm dan 1000 ppm memberikan tanaman jagung lebih pendek daripada tanpa Paclobutrazol. Kata kunci: Pupuk nitrogen, Paclobutrazol, dan tanaman jagung manis