Pemerintah memanfaatkan media sosial seperti twitter sebagai salah satu kanal interaksi dengan masyarakat. Informasi hasil interaksi tersebut sebagai umpan balik untuk mengetahui opini masyarakat terhadap kebijakan publik. Analisis sentimen tweet dari masyarakat dapat dijadikan sebagai salah satu parameter penunjang bagi pemerintah dalam mengevaluasi kebijakan dan pengambilan keputusan mendatang. Penelitian ini bertujuan untuk mengetahui sentimen data tweet masyarakat terhadap akun twitter resmi Pemerintah Provinsi DKI Jakarta di masa pandemi COVID-19. Data yang diperoleh sebanyak 14208 baris dengan query pada tweet yang mengandung kata atau menyebut username @dkijakarta, dimana akan dikelompokkan berdasarkan kelas sentimen yaitu, negatif, netral, dan positif dengan menggunakan TF-IDF Vectorizer untuk pembobotan kata dan klasifikasi menggunakan beberapa metode yaitu, random forest classifier dengan hasil akurasi sebesar 75,81%, algoritma naive bayes dengan hasil akurasi 75,22%, dan algoritma support vector machine 77,58%. Dilakukan proses analisis sentimen pada tweet dengan presentase hasil negatif, netral, dan positif masing-masing yaitu, 8,8%, 83,6%, 7,6%.

Kalimantan whose existence is increasingly extinct so it needs to be preserved by in vitro propagation. This study aims to determine the effect of a combination of the growth regulators, Benzyl Amino Purin (BAP), Kinetin, Naphthalene Acetic Acid (NAA) and banana extract on the growth of sugar cane orchids in vitro. The basic media used were Half Murashige and Skoog (1/2 MS), on the base media were added 30 g.L-1 sugar, 8 g.L-1 seaweed commercial powder,  plus BAP 3 ppm, Kinetin 3 ppm, NAA 0.5 ppm, and ambon banana extract 100 g.L-1, the acidity (pH) of the media is adjusted to around 5.8. The research design used was a Completely Randomized Design (CRD), each treatment was repeated six times. Data were analyzed using variance analysis and continued with DMRT (Duncan Multiple Range Test) tests with a level of 5%.            The results showed that the half media Murashige and Skoog was good for the propagation of sugarcane orchids.  The addition of BAP growth regulators, Kinetin, NAA, and banana extracts showed a good response to growth culture. The addition of BAP 3 ppm + NAA 0.5 ppm showed the best results for the height increased, leaf number increased, leaf length increased, leaf width increased, and the number of shots increased. The addition of Ambon banana extract to media containing growth regulators tended to decrease the growth response, seen in the parameters of plant height increased, leaf number increased, leaf length increased, leaf width increased, the number of shoots increased, the number of roots increased and in root length increased.

The research was conducted to find out the effect of interaction; mycorrhizal dosage; and local microorganisms of weevil and banana stems on the growth and yield of red chili. The experiment was conducted from February to June 2020 in Loa Bakung Village, Sungai Kunjang Subdistrict, Samarinda, arranged in a Randomized Complete Block Design consisting of two factors and replicated seven times. The first factor was mycorrhizal dose, consisting of four levels: 0; 5; 10; and 15 g plant-1. The second factor was the concentration of local microorganisms, consisting of four levels, namely: 0 mL L-1  (100% water);100; 200; and 300 mL L-1. The variables observed were an increase in plant height, number of branches, flowering age, fruiting age, number of fruit, fresh weight of fruit, dry weight of fruit, fruit diameter, and fruit length.  Data were analyzed by analysis of variance and continued by Duncan’s Multiple Range Test at a level of 5%.    The results showed that the interaction between mycorrhizae and MOL was significantly different on fresh fruit weight and fruit dry weight with the best treatment being 10 g mycorrhizal plant-1 and 200 ml MOL L-1 on fresh fruit weight and dry fruit weight, 303.14 and 36.86 g plant-1. The effect of mycorrhizae was significantly different on fresh fruit weight, fruit dry weight, fruit diameter, and fruit length, with the best dose being 10 g mycorrhizal plant-1, obtained fruit fresh weight 229.42 g and fruit dry weight 26.77 g. The effect of MOL was significantly different on the number of fruit, fruit fresh weight, fruit dry weight, fruit diameter, and fruit length, with the best concentration was 200 mL MOL L-1 obtained fresh fruit weight of 256.53 g and fruit dry weight 29.98 g.

Eucalyptus pellita  is fast growing species and have many advantages such as: pulp and paper industry raw material, building construction, charcoal, and medicine.  The research was carried out to study plant morphogenesis from shoot explant of E. pellita F. Muell by in vitro technique. The experiment was conducted at Tissue Culture Laboratory, Agriculture Faculty of Mulawarman University from March until June, 2016.Single factor experiment was arranged in Completely Randomized Design with 10 replications.  The factor was BAP concentrations (B) consisted of 1.00 mg BAP L-1 (b1); 2.00 mg BAP L-1 (b2); 3.00 mg BAP L-1 (b3); and 4,00 mg BAP L-1 (b4). The explants was innoculated on MS medium supplemented with BAP according to the treatments. Data analyzed by analysis of variance (anova) and continued by Least Significant Difference  (LSD) test  with level 5%. Results of the experiment showed that the BAP concentrations can promote shoot formation of E. pellita.  Statistical analysis indicated that the  effect of BAP concentrations significantly difference on number of shoots at 8 weeks after innoculation (WAI), shoot length, and number of leaves at  4; 6; and 8 WAI, however it’s no significantly difference on shoot formation time and number of shoots at 4 and 6 WAI.  The highest number of shoots,  shoot length, and number of leaves achieved by 4,00 mg BAP L-1.