Abstract. Selection is a routine activity in plant breeding programs that must be done by plant breeders in obtaining superior plant genotypes. The use of appropriate selection criteria will determine the effectiveness of selection activities. The purpose of this study was to analysis the inheritable agronomic traits that contribute to soybean yield. A total of 91 soybean lines were planted in Muneng Experimental Station, Probolinggo District, East Java Province, Indonesia in 2016. All soybean lines were arranged in randomized complete block design with two replicates. Correlation analysis, path analysis and heritability estimation were performed on days to flowering, days to maturing, plant height, number of branches, number of fertile nodes, number of filled pods, weight of 100 seeds, and yield to determine selection criteria on soybean breeding program. The results showed that the heritability value of almost all agronomic traits observed is high except for the number of fertile nodes with low heritability. The result of correlation analysis shows that days to flowering, plant height and number of fertile nodes have positive correlation with seed yield per plot (0.056, 0.444, and 0.100, respectively). In addition, path analysis showed that plant height and number of fertile nodes have highest positive direct effect on soybean yield. Based on this result, plant height can be selected as one of selection criteria in soybean breeding program to obtain high yielding soybean variety.

Nursery success is one of the important things in the oil palm plantation business. Nurseries are the beginning of efforts to cultivate palm plants, so the nurseries must consider all the conditions that can affect the development of the growth of oil palm plants. One important requirement is to conduct nurseries that tend to be organic, which are environmentally friendly. The use of organic fertilizers and sustainable biological fertilizers is very important in increasing soil fertility, growth and crop yields. Organic fertilizer that used is sugar mill wasted blotong and biological fertilizer is mychorrhizal. To determine the effect of giving sugar mill waste blotong and mycorrhizal applications on P nutrient levels in the Main Nursery. This study uses factorial randomized block design method (RAK). First factor is blotong (B): B0= control, B1= 500 gr blotong/seed, B2= 100 gr blotong/seed. Second factor is Mycorrhizal (M): M0= control, M1= 10 gr mycorrhizal arbusculae/seed, M2= 20 gr mycorrhizal arbusculae/seed. 9 treatment combinations were obtained with 4 replications, so the total treatment was 36. Blotong compost application significantly affected palm seed height, canopy dry weight and root dry weight, while mycorrhizal application only significantly affected seed height. the combination between them two gives the best effect on B1M1 treatment.

No abstract

Mobile technologies have become a key potential learning tool for the public in this digital era, particularly for young people. The Indonesian government, through its National Disaster Management Agency, has developed and launched a mobile application called InaRisk Personal to help citizens become more aware of disasters. This paper aims to assess whether this map-based application is effective and efficient as a disaster learning tool for senior high school students by evaluating its readability (efficiency and accuracy of map interpretation) and overall satisfaction with the application by surveying 361 students in West Java, Indonesia. This study also compared the application with printed disaster maps obtained from local governments to roughly examine its performance. The findings show that both measurements (readability and user satisfaction) were higher for the application. We also found that most students prefer to learn about disasters through cartographic visualization on the mobile application with suggestions for improvements compared to the printed maps.

Limbah kulit buah yang selama ini dibuang, ternyata memiliki nilai nutrisi yang cukup baik bagi manusia dan makhluk hidup lainnya, beberapa penelitian telah dilakukan pada limbah kulit buah-buahan untuk diolah menjadi makanan, obat, dan kosmetik. Penelitian ini bertujuan untuk memperoleh formula sediaan krim yang mengandung ekstrak kulit buah pepaya dan ekstrak kulit buah rambutan sebagai antioksidan yang aman, efektif,  dan stabil. Kulit buah pepaya dan kulit buah rambutan masing-masing diekstraksi menggunakan etanol 70% dengan metoda maserasi. Maserat yang diperoleh kemudian dipekatkan dengan menggunakan rotary evaporator. Ekstrak dikombinasi dan dibuat sediaan krim menggunakan metode pencampuran dan peleburan. Krim yang dihasilkan dievaluasi. Ekstrak memiliki aktivitas antioksidan yang sangat kuat dengan nilai IC50 untuk ekstrak kulit buah rambutan, ekstrak kulit buah papaya, campuran ekstrak kulit buah pepaya 2,5% dan kulit buah rambutan 2%, campuran ekstrak kulit buah pepaya 3% dan kulit buah rambutan 2%, campuran ekstrak kulit buah pepaya 3,5% dan kulit buah rambutan 2%, berturut-turut adalah 1,324; 13,769; 2,186; 2,525; dan 2,648 µg/ml. Ekstrak kulit buah pepaya dan ekstrak kulit buah rambutan dapat dibuat sediaan krim minyak dalam air dengan karakteristik berwarna cokelat, berbau khas manis, homogen, pH 5,02±0,218 sampai 5,11±0,206, sifat alir pseudoplastis tiksotropik, viskositas 11.000-130.000 cPs. Aktivitas antioksidan krim sangat kuat dengan nilai IC50 untuk F1, F2, F3, dan F4, berturut-turut adalah 9,071; 13,824; 15,914; dan 16,407 µg/ml.