The research effects of liquid calcium fertilizers on the growing and producing of potatoes (Solanum tuberosum L.) had properly done. The research was carried out on Lau Gumba Village, Berastagi Sub-district, Karo Regency, North Sumatra, December 2018- May 2019. Randomize Block Design with two factors i.e. Faktor I: Concentration of “BF” fertilizer, B0: control, B1: 2, 5 ml/96 ml of water, B2: 5 ml/ 96 ml of water, B3: 7, 5 ml/ 96 ml of water. Factor II: concentration of “BC” fertilizer, C0: control, C1: 1 ml/ 96 ml of water, C2: 2 ml/ 96 ml of water, C3: 3 ml/ 96 ml of water. The results of the study show that the concentration of the liquid calcium fertilizer had significantly impact (p < 0.05) to the growing and the production of tubers. The concentration of B3 (7,5 ml/96 ml of water) and C3 (3 ml/96 ml of water) had highest score 39.4 cm of plants’ height, The concentration of B3 (7, 5 ml/96 ml of water) and C3 (3 ml/96 ml of water) had significant impact to tubers’ weight.
Penelitian ini dilaksanakan bagi pengujian “Respon Campuran Media Tanam dan Perlakuan fisik Terhadap Laju Pertumbuhan dan Produksi Pada Tanaman Ubi Jalar (Ipomea batatas L). Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan dua faktor perlakuan kombinasi. Faktor pertama adalah media tanam (C) terdiri dari 4 taraf yaitu: media top soil (Co), media top soil + pasir (C1), media top soil+kotoran sapi + abu sekam (C2) dan media top soil+jerami+kulit pisang (C3). Faktor yang kedua adalah penggunaan perlakuan fisik (P) terdiri dari 3 taraf yaitu: tanpa perlakuan (Po), batang ubi jalar di dulung diletakkan diatas gulutan (P1), dan pemangkasan dilakukan pada lewat bedengan (P2). Berdasarkan hasil penelitian yang dilakukan dapat diketahui bahwa Media tanam dan perlakuan fisik memberikan kemampuan yang tinggi dan berbeda nyata (p < 0.05) terhadap semua parameter kecuali jumlah cabang primer. Kombinasi kedua factor yang diujikan tidak menunjukkan perbedaan yang nyata (p > 0.05 pada setiap parameter yang diamati.
Community service is carried out as part of the implementation of the Tri Dharma of Higher Education which aims to assist the community in increasing knowledge and skills in the field of making brown sugar that utilizes the sap of palm oil stems. Oil palm stem sap can be processed into brown sugar which is an alternative for processing palm oil waste in Sei Musam Village, Sei Batang Serangan District, Langkat Regency. The method of implementing this community service activity is in the form of assistance to brown sugar producers in the form of technology transfer, management, and equipment support. Assistance activities carried out for 2 (two) days. The result of the mentoring activities is an increase in palm sap processing skills, and an increased understanding of business management, especially in financial governance with simple bookkeeping. Assistance to brown sugar artisans needs to be done considering the quality of brown sugar produced so far is still low and the shape of the brown sugar produced is not uniform. The assistance team provided equipment in the form of a brown sugar molding tool to produce a uniform brown sugar mold so that when it is packaged it looks neat for marketing. From the community service activities that have been carried out, it shows that the craftsmen are able and successful in making brown sugar uniform shapes and are able to calculate the cost of producing brown sugar from palm oil stem sap.
The aim of study is to identify and analyse the role of women in improving their incomes by taking advantage of mangrove forest (Wanatani mangrove) in economic activities in Sei Naga Lawan village, Perbaungan sub district, Serdang bedagai regency among these are the age of farm women (x1), income of farm women (x2), farm women’s land area (x3), marital status of test (x4), experience level (x5) analyze the revenue afforded the womenworking over mangrove accounts in their contributions to his family revenues. The result of the correlation test, the influential factor in booting farm women’s incomes is based on linear regression to variabel influences in farm women’s incomes. Based on the first hypothes put by researches, the variabels of agricultural stock to mangrove forest are influenced (x1 and x5), which account for a significant and redlified significance of 0.05 (0.016). Thus, it can be inferred that the rate of peaset women’s wages have a bearing on income. The insignificant facts raised by researches show that variabel land area (x3) and subsequent variabels show that marital status (x4) and so do variable rates of experience (x5) are incalculable to the incomes of mangrove farm women.
Tujuan dari penelitian ini adalah untuk membandingkan pengaruh teknologi proses fermentasi biji kakao (Theobroma cacao L) dengan pre-conditioning terhadap derajat fermentasi dan derajat keasaman selama proses fermentasi. Penelitian ini dilakukan dengan menggunakan rancangan acak lengkap faktor tunggal yaitu: teknologi (T): (T1 = teknologi fermentasi tanpa pre-conditioning; T2 = teknologi fermentasi dengan teknologi pre-conditioning I dan T3 = fermentasi dengan pre-conditioning II) dengan fermentasi waktu: 3, 4 dan 5 hari. Parameter yang dianalisis adalah derajat fermentasi dengan nilai indeks fermentasi dan derajat keasaman dengan pH. Hasil penelitian menunjukkan bahwa waktu fermentasi berpengaruh sangat signifikan terhadap derajat keasaman namun tidak berpengaruh nyata terhadap derajat fermentasi.
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