Soybean extensification on mineral and peaty mineral soils of tidal land are limited by

<p>ABSTRACT<br />Perennial sow thistle (Sonchus arvensis L.) is one of medicinal plants which has potential in healing kidney disease. However, quality and sufficient supply of perennial sow thistle seedling with good quality is inadequate. This research was aimed at producing perennial sow thistle seedling generatively and to determine the suitable type of growth media and media volume for its production. The experiment was conducted in experimental field at Cikarawang, IPB from October 2015 to January 2016. The experiment was laid out in completely factorial randomized design (3x3) with three replications. The two of treatment factors were volume of growth media (9, 12, and 29 mL) and composition of growth media (100% goat manure, 50% goat manure + 50% rice hull charcoal, and 33% goat manure + 33% rice hull charcoal + 33% coco peat) (v:v). The results showed that larger media volume produced better perennial sow thistle seedling. There was significant effect of interaction between media volume and composition of growth media to some variables: leaf number, leaf length, leaf width, plant weight, shoot weight, root length, and total flavonoid concentration. The result showed that 50% goat manure + 50% rice hull charcoal and combination of media volume 12 mL was strongly recommended for production of perennial sow thistle seedling.<br />Keywords: coco peat, flavanoid, manure, rice hull, seedling</p><p>ABSTRAK<br />Tempuyung (Sonchus arvensis L.) merupakan salah satu tanaman obat yang berpotensi untuk mengatasi masalah penyakit batu ginjal. Besarnya potensi yang dimiliki oleh tempuyung belum diimbangi dengan penyediaan bibit yang baik dan jumlah yang besar. Penelitian ini bertujuan untuk memproduksi bibit tempuyung melalui pembibitan secara generatif, serta menentukan jenis media tanam dan volume media yang tepat. Percobaan dilakukan di kebun percobaan Cikarawang IPB, pada bulan Oktober 2015 sampai Januari 2016. Percobaan menggunakan Rancangan Acak Lengkap (RAL) dengan 2 faktor, faktor pertama adalah jenis komposisi media tanam yaitu menggunakan 100% pupuk kandang kambing, 50% pupuk kandang kambing+ 50% arang sekam, dan 33% pupuk kandang kambing + 33% arang sekam + 33% cocopeat (v:v), faktor ke dua adalah volume media dengan ukuran 7.9, 12, dan 29 mL tiap lubang pada tray, setiap perlakuan memiliki 3 ulangan. Hasil penelitian menunjukkan bahwa perlakuan volume media yang lebih besar (29 mL) menghasilkan pertumbuhan dan hasil bibit tempuyung yang lebih baik. Terdapat pengaruh interaksi antara perlakuan jenis komposisi media dan volume media terhadap peubah jumlah daun, panjang daun, lebar daun, bobot total dan bobot tajuk tanaman, panjang akar serta kadar total flavonoid. Perlakuan media terbaik untuk produksi bibit tempuyung komposisi media 50% pupuk kandang kambing + 50% arang sekam (v:v) dengan volume media 12 mL.<br />Kata kunci : arang sekam, cocopeat, flavonoid, pembibitan, pupuk kandang kambing</p>

Orange jessamine (Murraya paniculata (L.) Jack) has high economical values due to its medicinal properties. Orange jessamine leaves contain flavonoid, mexotionin and coumarin. Orange jessamine flowers contain scopoletin that can lower blood pressure and can be used as an anti-inflammatory agent and as anti-allergic. Orange jessamine is often used as an ornamental plant because it has beautiful flowers similar to jasmine, has nice scent, and red color fruits. The aim of this research is to study the effects of guano and rice-hull ash application on flowering induction of orange jessamine. The research was conducted at an organic experimental farm, Bogor Agricultural University, Darmaga (6°30' – 6°45' S, 106°30'-106°45' E) from December 2014 to June 2015 using randomized complete block design. The experiment used four treatments, i.e. guano at 0.4 kg per plant, combination of guano (0.4 kg per plant) and rice-hull ash (3.0 kg per plant), rice-hull ash 3.0 kg per plant and without fertilisation as control. The results showed that the application of rice-hull ash increased plant height and leaf number. Guano application significantly increased the intensity of leaf color in mature orange jessamine leaves. Rice-hull ash application increased flower number at 12 and 20 weeks after application.Keywords: chlorophyll, flower number, flower weight, NPK value, organic farming