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The problem of generative propagation of soursop is its seeds take a long time to germinate which are caused by the hard seed coat. The solution to solve that problem is scarification and coconut water soaking to simpifly the process of imbibition and seed germination and also stimulate the growth of shoot. This objective of the research was to determine the effect of scarification position and the soaking with various concentration of coconut water on seed germination and growth of soursop seedling. This research was held at Faculty of Agriculture field, University of Sumatera Utara in March -July 2017. The resesarch used factoial randomized block design with two factor and three replication. The first factor is scarification position (without scarification, stomach scarification, top scarification) and the second factor is coconut water soaking (0%; 25%; 50%; 75 %). The result of the research showed that the germination rate parameter, germination percentage, crop height, number of leaves, root volume and dry weight of crop significantly higher on without scarification treatment than with scarification treatment. The interaction between scarification position and soaking with various coconut water concentrations was not significant affecting to the seed germination and growth of soursop seedling. ABSTRAKPermasalahan dalam perbanyakan generatif tanaman sirsak adalah biji yang disemai membutuhkan waktu yang lama untuk berkecambah. Hal tersebut disebabkan oleh tingkat kekerasan kulit bijinya Solusi dari permasalahan tersebut adalah dengan melakukan skarifikasi dan perendaman air kelapa dengan berbagai konsentrasi untuk memudahkan proses imbibisi dan perkecambahan pada biji serta merangsang pertumbuhan tunas. Penelitian ini bertujuan untuk mengetahui pengaruh posisi skarifikasi dan konsentrasi air kelapa terhadap perkecambahan biji dan pertumbuhan bibit sirsak, Penelitian ini dilaksanakan di lahan Fakultas Pertanian, Universitas Sumatera Utara, Pada bulan Maret -Juli 2017 dan menggunakan rancangan acak kelompok dengan dua faktor perlakuan dan tiga ulangan. Faktor pertama adalah posisi skarifikasi (tanpa skarifikasi, skarifikasi bagian perut, skarifikasi bagian ujung) dan faktor kedua adalah perendaman air kelapa (0% ; 25% ; 50% ; 75%). Hasil penelitian menunjukkan bahwa peubah amatan laju perkecambahan, persentase perkecambahan, tinggi bibit, jumlah daun, volume akar dan bobot kering bibit nyata lebih tinggi pada perlakuan tanpa skarifikasi dibandingkan dengan perlakuan skarifikasi. Interaksi antara posisi skarifikasi dan perendaman pada berbagai konsentrasi air kelapa tidak berpengaruh nyata terhadap perkecambahan biji dan pertumbuhan bibit sirsak.

Background: Diabetes and higher HbA1c level have increased the incidence of stroke. Hemoglobin levels both high and low are associated with poor outcomes. Leukocytes play an important role in the initiation of the atherosclerosis process.Methods: This was a cross-sectional study with a sample size of 62 people selected by non-random sampling method on a consecutive basis, patients with acute stroke were taken blood to measure blood glucose levels, HbA1c, Hb and Leucocytes when entering the hospital room. Outcomes were assessed using NIHSS and MRS. The calculation of NIHSS and MRS scores was performed on the first day of admission and the fourteenth day. To analyze the correlation of blood sugar levels during HbA1c, Hb and leukocytes in acute stroke, this study used Spearman's correlation test. The p value <0.05 was considered statistically significant.Results: The study subjects of 62 acute stroke patients (acute ischemic stroke 31 people and 31 people hemorrhagic stroke). Acute stroke patients were consisted of 38 men (61.3%) and 24 women (38.7%). Of 31 people with hemorrhagic stroke, there were 16 men (51.6%) and 15 women (48.4%), ischemic stroke patients were consisted of 22 people (71, 0%) and women were 9 people. Spearrman repair test showed no symptoms between blood glucose levels, HbA1c, Hemoglobin and leukocytes with outcomes in acute stroke.Conclusions: There was no significant association between blood glucose levels, HbA1c, hemoglobin and leukocytes with outcomes in acute stroke.

Drought stress is a major limiting factor for soybean cultivated on dry land. Water limitation in the root zone will inhibit the growth, development and yield of soybeans. This research aimed to study the characteristics of root growth and its effect on soybean yield on drought stress. The study used a pot method with two levels of treatment, 80% field capacity (FC) and 20% FC. Tested indicator plants were soybean consisting of two types, namely Nanti and Cikurai. The results showed that the Nanti Variety at 20% FC groundwater content experienced a percentage decrease in root dry weight, root volume, root length, shoot dry weight, and dry seed yield with the values of 58.33; 73.2; 24.85; 69.63 and 73.00%, respectively. Cikuray varieties experienced a decrease in root dry weight (55.17%), root volume (43.8%), root length (47.13%), shoot dry weight (71.05%), and dry seed yield (62.78%), respectively.

Corn is one of the indicator plants that can give response to volcanic dust sinabung. The purpose of this study was to determine the respons of sweet corn plant growth to the composition of planting media (top soil, Sinabung volcanic dust and EFBOP). This research was done at experimental field of Agriculture Faculty of University of Sumatra Utara, Medan at height about 25 mals in August until November2016. The research was using a non-factorial randomized block design which was consisting of 6 treatments of top soil : volcanic dust : EFBOP ratio that is 10 kg : 0 kg : 0 kg (M0), 8 kg : 0 kg : 2 kg (M1), 8 kg : 0,5 kg : 1,5 kg (M2), 8 kg : 1 kg : 1 kg (M3), 8 kg : 1,5 kg : 0,5 kg (M4), and 8 kg : 2 kg : 0 kg (M5). Parameters observed were plant height, flowering age, length and width of leaves, fresh weights, length of cob, diameter of cob, seed line in cob, and number of seeds of cob. The result showed that the ratio of top soil, Sinabung volcanic dust and EFBOP had significanly effect on plant height, long and width of the leaves, fresh weights, length of cob, diameter of cob, seed line in cob, and number of seeds of cob, and had no significant effect on age flowering. The best composition of planting media was M2 with composition 8 kg top soil, 0,5 kg sinabung volcanic dust, and 1,5 kg EFBOP.