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Journal : Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)

Evaluasi Beberapa Ekotipe Jarak Pagar (Jatropha curcas L.) untuk Toleransi Cekaman Kekeringan Iskandar Lapanjang; Bambang S. Purwoko; , Hariyadi; Sri Wilarso Budi R; Maya Melati
Indonesian Journal of Agronomy Vol. 36 No. 3 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (257.78 KB) | DOI: 10.24831/jai.v36i3.1386

Abstract

Drought stress in crop  occurs due to imbalance between water supply and demand.  Crop responses to drought stress  depend on their ecotypes.  This study was aimed at examining the tolerance of the physic nut ecotype to drought stress in inceptisol. This study was conducted at Silviculture greenhouse, Forestry Faculty IPB, from September to December 2007. A Completely Randomized Design with two factors was used in the experiment, i.e. water content (80, 60, and 40 % of field capacity) and physic nut ecotypes (Palu, NTB, IP-A, and IP-P) The results showed that (1) drought reduced stem diameter (31.4%), root length (65.49%) and leaf area (72.73%), and decreased plant dry weight (74.83%),(2) tolerance level of the evaluated physic nuts on the drought stress were moderate tolerance (IP-1A, NTB,  Palu) and sensitive (IP- Pakuwon).   Key words:  physic nut, drought stress, tolerance
Penggunaan Pot Berbahan Dasar Organik untuk PembibitanGmelina arborea Roxb. di Persemaian Sri Wilarso Budi; Andi Sukendro; Lina Karlinasari
Indonesian Journal of Agronomy Vol. 40 No. 3 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (375.8 KB) | DOI: 10.24831/jai.v40i3.6833

Abstract

The objectve of this research was to obtain the best materials composition and adhesive of organic pot for forest trees seedling production. Organic pot strength was evaluated by testing the strength of rupture elasticity and elasticity stiffness of each composition. The bioassay testing used Completely Randomized Design with factorial pattern, consisting of two factors, (1) basic raw materials of the pot (used newspaper, litter and compost) and (2) the type of adhesive (control, tanin and starch). The results showed that the adhesive starch gave higher strength, whereas adhesive tannin gave higher stiffness as compared to control. Results of bioassay showed that the mixture (50:50 v/v) of basic materials of used newspaper and compost (KKK) which were glued with tannin, produced the best results for height and diameter increament with the value of 35.85 cm, 0.31 cm respectively and biomass value of 0.99 g after 12 weeks of planting. The highest level of damage in organic pot with basic raw materials KKK without adhesive was 47.6%, whereas lowest level of damage in organic pot with basic raw material used newspaper (KK) with tannin addhesive was 2.0% after 12 weeks in the nursery.Keywords: adhesive, Gmelina arborea,organic pot, organic matter, nursery,
Co-Authors , Hariyadi AAboe B. Saidi Abdurrani Muin Adisti Permatasari Putri Hartoyo Agustina Puspita Dewi Aji Nuralam Dwisutono Akhmad Wahyudi Alfi Laila Zuhriansah Allaily Allaily Andi Sukendro Ani Kurniawati Arif Budi Setiawan Arum Sekar Wulandari Atang Sutandi Bambang S. Purwoko Baskoro Rochaddi Basuki Wasis Bedah Rupaedah Berry Oktavianto Betty Purwati Cahyo Wibowo Ceng Asmarahman Corryanti . Corryanti Corryanti Corryanti Corryanti Dadan Mulyana Dida Syamsuwida Didah Nur Faridah Didy Sopandie DWI ANDREAS SANTOSA Dwi Puspasari Arum Ramadhani Endah Retno Palupi Endang Suhendang Eny Widajati Erdy Santoso Erdy Santoso Faisal Al Asad Fatimah Nur Istiqomah Fiona Christina Fransisca Yosina Regina Luturmas Gunawan Gunawan Hamim Hamim Husna Husna Husna Husna Hutami Indah Pertiwi Ikbal . Ikbal Ikbal Imam Wahyudi Indrawan, Imam Wahyudi Intan Fajar Kemala Irdika Mansur Iskandar . Iskandar Iskandar Iskandar M. Lapanjang Iskandar Z Siregar ISKANDAR ZULKARNAEN SIREGAR Istomo . Iswandi Anas JAYANI, FARADILA MEI Jumadil Akhir Kartika Megawati Kartini Kramadibrata Kartini Kramadibrata Khoryfatul Munawaroh Lina Karlinasari Luluk Setyaningsih Maman Turjaman Maman Turjaman Maman Turjaman Maman Turjaman Maman Turjaman Maryani Fatimah Putri Hardhani Maya Melati MEITY SURADJI SINAGA MEITY SURADJI SINAGA Mohammad Agus Salim Mohammad Agus Salim Salim Muhammad Helmi Muttaqin, Zainal Nelly Fridayanti Noor F Mardatin NUNANG LAMAEK MAY Nurheni Wijayanto Panca Dewi MH Karti Prijanto Pamoengkas Putri Aurum Putri Aurum Rahmawati Rahmawati Sabti Indah Purwanti Safinah S. Hakim S Hakim Safinah Surya Hakim Satriyas Ilyas Siti Hanna Ghaida Sri Muryati Sri Muryati Sri Muryati Sudirman Yahya SUDIRMAN YAHYA Tedi Yunanto Teuku Tajuddin Tirsa Eka Saputri Ulfah Juniarti Siregar Wahono Sumaryono Yadi Setiadi Yadi Setiadi Yan Eka Prasetyawati YENNI BAKHTIAR YENNI BAKHTIAR YENNI BAKHTIAR Zainal Muttaqin