The acclimatization process of cultured plants needs special attention because it is a critical period for adaptation to In-Vivo conditions. The environmental changes and the imperfection of planlet anatomy are important things that need to be considered to support the growth of Dendrobium orchid planlet. The aim of this study was to determine the effect of planting media type and its positioning on the Dendrobium orchid adaptability during acclimatization process. This study was conducted from March to Mei 2017 in AIAT North Sumatra tissue culture laboratory and screen house. The experimental design used in this study was a randomized group design with five replications. The treatment consisted of planting media and pot position model. The planting media combination were fern+wood charcoal (M0); fern+coconut fibre (M1); ferns+broken bricks (M2); fern+wood charcoal+coconut fibre (M3); and ferns+wood charcoal+coconut fibre+broken bricks (M4) while the pot position model were laying (P0) and hanging (P1) model. Morphological parameters observed were growing plant percentage, plant height, leaves number, roots number, and roots length. The results showed that the best planting media and pot position combination supported the Dendrobium orchid growth were found in ferns and wood charcoal (M0) and ferns and bricks (M2) with lying model (P0).

The aim of this assessment was to investigate the characteristic of dried chilli powder with different drying methods and pretreatmen size before dried. Chilli was cutted half and sliced before dried using solar drying or gas oven and then grind dried red chilli in a blender to produce chilli powder. The pretreatments is to make drying time shorter therefore can get better colour and vitamin C. The characteristic parameters were moisture content, colour (L*, a*, b* values), ash and vitamin C content. The results showed that the colour and vitamin C of dried chilli powder using solar drying was higher than that using oven. In addition, the sensory evaluation of abon cabe using the best quality of dried chilli mixture with fried shallots, fried garlic powder, andaliman powder, roasted teri and terasi were observed.

VCO Fermentation method can be done on a large scale with many advantages compared to the heating method, such as the effectiveness and efficiency of labour, time, cost, equipment also produce higher VCO quantity and quality. This study was aimed to determine type and yeast concentration with fermentation time that produced the best VCO yield and quality. The study was conducted from February to November 2015 in the Post Harvest Laboratory AIAT North Sumatra. The research used a completely randomized factorial design with 3 replications. The treatment consisted of 2 factors, which are yeast type (baker’s, tape, and tempeh) and yeast concentration (3,6,9,12, and 15%). The results showed the baker’s yeast of 15% concentration on 24 hours fermentation time gave the best yield (13.60%) and the highest score on organoleptic test. Interaction results of type and yeast concentration were significantly different on VCO water content but were not significantly different on FFA and peroxide value. Generally, the lowest VCO water content is obtained in tape yeast while the lowest FFA and peroxide value in baker’s yeast. VCO fermented by tempeh yeast produced the highest lauric acid (48.76%) while the highest medium-chain fatty acid composition produced by tape yeast fermentation (60.64%).

Provinsi Sumatra Utara sebagai daerah penghasil padi nasional keenam memiliki peran penting dalam mendukung swasembada pangan nasional. Program Desa Mandiri Benih yang telah dilaksanakan oleh Provinsi Sumatra Utara sejak tahun 2015 bagaimanapun juga masih memerlukan pemantauan dan evaluasi berkelanjutan secara berkala. Penulisan buku ini merupakan salah satu cara atas upaya tersebut. Selain sebagai pembelajaran untuk menghindari pengulangan kesalahan dan sebagai cara untuk meningkatkan peluang strategi perbenihan padi, buku ini diharapkan juga dapat meningkatkan semangat petani dalam kegiatan penangkaran benih. Ditulis oleh Badan Penelitian dan Pengembangan Pertanian, khususnya Balai Pengkajian Teknologi Pertanian Sumatra Utara, buku yang memotret dan merekam kegiatan nasional yang digagas oleh Kementerian Pertanian dalam mendukung Program Lumbung Pangan Dunia 2045 ini juga berkontribusi menyajikan rekomendasi kebijakan yang dapat diambil oleh Pemerintah Sumatra Utara. Pendeknya, buku yang memotret dan merekam kesuksesan serta permasalahan petani penangkar benih di Sumatra Utara ini cocok dibaca oleh siapa saja yang menghendaki peningkatan dan penyebaran varietas unggul baru, khususnya dengan menjadikan Sumatra Utara sebagai kawasan mandiri benih pada masa yang akan datang.

Tropical climatic conditions accompanied by high rainfall are supporting factors for soil acidification in Indonesia's drylands. One of the conventional management technologies that are most widely used to improve soil acidity is liming. This study observed the effectiveness of various doses of Aglime ameliorant for improving acid soil and its effect on the growth of maize (Zea mays L.). The study was conducted in Pasar VI Kwala Mencirim Village, Sei Bingai District, Langkat Regency, North Sumatra from June to October 2020. The experimental design of this study was a non-factorial randomized bock design consisted of 7 treatments of Aglime ameliorant dosage with four replications. The results showed that the application of various doses of Aglime ameliorant was able to increase soil pH, height, and maize production which the highest pH value, height, and production were obtained at Aglime dose of 5 tons Ha-1 (AL 5). The effectiveness of Aglime ameliorant to increase soil pH is reflected in the relative agronomic effectiveness (RAE) which is overall > 95% (101,7 – 274,5%) for the tested Aglime dose of 1 to 5 tons per hectare (AL1-AL5).