Onion (Allium ascolanicum L.) is not only popular as cooking spices in Indonesia but also throughout the world. Onion that has high economic value, has its own attraction to be cultivated by farmers. However, farmers often face some problems in onion farming. Problems were faced by farmers related to social economic conditions both internal, external and natural conditions. Fertilizer application for onion can use inorganic and organic fertilizer materials. The use of inorganic fertilizers without the addition of organic fertilizers over a long period of time, suspected to cause a decrease in soil physical and chemical capabilities, with the application of solid and liquid organic fertilizer is predicted to be more effective because the elements are more than one element. The use of fertilizers and organic matter through soil is often inefficient because of the fixation by soil particles. Liquid fertilizers administered overcome gapnutrients during growth. Herbafarm liquid organic fertilizer is a type of liquid fertilizer released by PT. Sidomuncul herbafarm which contains bio protectant, processed from by products of medicinal products made from raw medicinal plants and spices. Herbafarm contains macro and micro nutrients and also organic compounds that are essential for the growth and development of plants. This research was conducted in Sidera village, Biromaru sub-district, Sigi regency, Central Sulawesi Province. This study used a Randomized Block Design consisting of 5 treatment levels: P0 = control, P1 = 1 ml/liter of water, P2 = 2 ml/Liter of water, P3 = 3 ml/liter of water, and P4 = 4 ml/liter of water. All treatments were repeated 4 (four) times, so that there were 5 treatments each time 4 replicates = 20 experimental units. The results of this research were the best herbafarm POC on the treatment of     4 ml/liter of water that was on the parameters of plant height of  33,56 cm, leaves number  as much as 30. 63 blades, total dry weight of crop 9.99 g, number of tubers per family of 8.13 fruit, tuber diameter  of 20.26 mm, tuber length of  34.55 mm, fresh tuber weight per family of 32.57 g, tuber water content of 114.54 g and Weight of tuber per hectare 8.68 ton.ha-1.

The performance of the Wastewater Treatment Plants (WWTP) in several hospitals is reported low, where the wastewater often does not meet the quality standards so that it has the opportunity to pollute the environment. Horizontal Sub-surface Flow Constructed Wetland (HSSF-CW) is a green and sustainable technology; it can be used as an alternative technology for hospital wastewater treatment. This study aimed to evaluate the performance of HSSF-CW on a pilot-scale in the removal of total coliform (TC) and total suspended solids (TSS), as well as to assess the effect of Ludwigia adscendens, Echinodorus paniculatus, and Typha angustifolia plants on the performance of HSSF-CW using experimental methods. The operational and design strategy adopted was setting the water depth at 0.30 m, maximum hydraulic loading rate of 3.375 m3/day, continuous wastewater recirculation, the use of river sand-gravel media measuring 5–8 mm, as well as setting tight spacing for T. Angustifolia was 53 clumps per m2, L. adscendens 133 stems per m2, and E. paniculatus 13 clumps per m2. The results of this study indicate that the performance of the HSSF-CW system on a pilot-scale planted with L. adscendens, E. paniculatus, or T. Angustifolia has proven to be able to eliminate the TC and TSS parameters of hospital wastewater to match their respective quality standards in hydraulic retention times <2 and 4 days. It can be concluded that T. Angustifolia, E. paniculatus, and L. adscendens positively boost the performance of HSSF-CW in the removal of TC and TSS. However, T. Angustifolia had a better effect than E. paniculatus and L. adscendens on the performance of the HSSF-CW system. Keywords: Constructed wetland, E. paniculatus, Hospital wastewater, L. adscendens, T. angustifolia ABSTRAK Kinerja Instalasi Pengolahan Air Limbah (IPAL) beberapa rumah sakit dilaporkan rendah, dimana air buangannya seringkali tidak memenuhi baku mutu sehingga berpeluang mencemari lingkungan. Horizontal Sub-surface Flow Constructed Wetland (HSSF-CW) adalah teknologi hijau dan berkelanjutan, yang dapat digunakan sebagai teknologi alternatif untuk pengolahan air limbah rumah sakit. Penelitian ini bertujuan untuk mengevaluasi kinerja HSSF-CW skala percontohan dalam penghilangan total coliform (TC) dan total padatan tersuspensi (TSS), serta menilai pengaruh tumbuhan Ludwigia adscendens, Echinodorus paniculatus, dan Typha angustifolia terhadap kinerja HSSF-CW dengan metode eksperimental. Desain dan strategi operasional yang ditempuh adalah pengaturan kedalaman air pada 0,30 m, laju pemuatan hidrolik maksimal 3,375 m3/hari, resirkulasi air limbah secara kontinyu, pemakaian media pasir-kerikil sungai ukuran 5–8 mm, serta pengaturan jarak tanam yang rapat masing-masing untuk T. angustifolia adalah 53 rumpun per m2, L. adscendens 133 batang per m2, dan E. paniculatus 13 rumpun per m2. Hasil penelitian ini menunjukkan bahwa kinerja sistem HSSF-CW skala percontohan yang ditanami L. adscendens, E. paniculatus, ataupun T. angustifolia terbukti mampu menyisihkan parameter TC dan TSS air limbah rumah sakit hingga sesuai baku mutu dalam waktu retensi hidrolik <2 dan 4 hari. Dapat disimpulkan bahwa T. angustifolia, E. paniculatus, dan L. adscendens secara positif mendorong kinerja HSSF-CW dalam penghilangan TC dan TSS. Namun, T. angustifolia memiliki pengaruh lebih baik dibandingkan E. paniculatus dan L. adscendens terhadap kinerja sistem HSSF-CW. Kata kunci: Air limbah rumah sakit, E. paniculatus, Lahan basah buatan, L. adscendens, T. angustifolia

The research aimed to discover the response of the growth of two spinach species on Nutrient Film Technique (NFT) hydroponic system and the concentration of the appropriate AB Mix solution on each species. The research was conducted in January to February 2016, at Green House, Faculty of Agriculture, Tadulako University by using Split Plot Design method. The main plot was red and green spinach, while the subplot was the concentration of AB Mix nutrient solution, namely 4 ml/L of water, 5 ml/L of water, 6 ml/L of water and 7 ml/L of water. The research findings reveal that AB Mix nutrient solution was generally very good to support the growth of spinach on NFT hydroponic. The green spinach had better response rather than the red one. There was no interaction between species and the concentration of nutrient solution. The good concentration of nutrient solution for green spinach is 6 ml/L. It was showed by the better growth of plant height on all age of plant, the more number of leaves, the canopy and the root (wet and dry) were heavier, while on the red spinach, 5 ml/L of concentration of nutrient solution resulted in the best growth, yet it was not significantly different from other concentration except on the parameter of plant height and the dry weight of plant canopy.