Plant diversity is really important to be a good learning media for students to achieve their goals. Presenting objects directly in class is not easy, therefore herbarium specimens are an alternative. The purpose of Program Kemitraan Masyarakat (PKM) is to provide groups of MGMP / Biology MGMP with understanding and skills in utilizing herbarium specimens as learning media in the classroom. This activities are carried out by lecture, demonstration and question and answer method. The lecture was conducted to explain basic knowledge about the herbarium, and its benefits as a media. The demonstration method was carried out by the instructors to demonstrate how to make a herbarium start from plant selection to pressing. Question and answer method if there is material that is not yet clear. The training on making herbarium as a medium that is used in classroom for Science/Biology teachers group in Enrekang is going well and smoothly; 2) Science / Biology teacher groups as trainees can understand the material well and are skilled in making herbariums starting from the sampling of plants, preservation with alcohol, pressing, drying, until attaching.
This study is an experimental research that aims to find out how the response of corn growth (Zea mays) with urea-coated zeolite as nitrogen release slowly, implemented from April to December 2017. The making of fertilizer is done in The corn variety used was HJ 21 Agritan. Observation parameters were stem circumference, leaf chlorophyll content, plant biomass (root, stem and leaves), cob weight, ear length, seed weight, leaf nitrogen and seed nitrogen. The technique of data origin is done by using variance analysis technique (F test) / ANOVA at the level of trust α = 0,05%. Then proceed with Duncan's advanced test using SPSS statistic program 20. The results showed that there was an interaction between zeolite-coated urea fertilizer on the yield of cob and corncob with different results on the other treatment. The best results on urea-coated zeolite treatment with 10% concentration. While for stem circumference, leaf chlorophyll content, plant biomass (root, stem and leaf), seed weight, leaf nitrogen and seed nitrogen showed no effect but when viewed the average result of urea coated application of zeolite with the highest 30% concentration.
Field and incubation experiments were conducted to determine the emission rate of greenhouse gases, nitrogen change, populations of AOB, NOB, and fungi as well as growth of corn in response to amendment of urea granulated with and without nitrification inhibitors and zeolite. The application of urea with neem, urea with zeolite, urea with zeolite + neem, urea with zeolite + dicyandiamide, and urea with dicyandiamide (UD) decreased the N 2 O emissions by 16.3%, 59.6%, 66.8%, 81.9%, 16.3%, and 86.7%, respectively. Meanwhile, patterns of CH 4 fluxes were mostly determined by small emissions. Increase in corn height, weight of cobs, biomass, and chlorophyll leaf contents were not significantly different between urea alone and urea with NIs and zeolite. In the incubation experiment, the highest concentration of NH 4 + and N 2 O production was detected during the first week and it remained high up to the second week of incubation in the combination of urea with NIs and zeolite treatments, although there was no significant difference compared with urea. During NH 4 + decrease, the concentration of NO 3 − started to accumulate from the second to the third weeks. Production of CO 2 showed no significant differences among treatments. The static production of CO 2 could also explain that NIs and zeolite additions did not change AOB, NOB, and fungi activities after the fourth week of incubation. Keywords Emission of N 2 O and CH 4 . CO 2 Production . Dicyandiamide . Neem . Nitrification inhibitor . Zeolite * Oslan Jumadi
Abstrak. The study aimed to examine the diversity of riparian tree vegetation on the banks of the Lawo River in Soppeng Regency. This research is descriptive and carried out for three months, starting from June to August 2018. This study uses a quadrant method with a plot size of 20 m x 20 m. Data analysis was performed to calculate diversity index, evenness index, and similarity index of riparian tree vegetation. The results showed that riparian tree vegetation found in the littoral zone of the Lawo River totaled nineteen (19) species belonging to eight families. Plant Gmeliana arborea (fam: Verbenaceae) is the most common plant. Species Diversity Index is a medium category. The Species Evenness Index is high (close to 1). Riparian tree vegetation on the banks of the Lawo river observed at five points shows almost the same vegetation conditions.
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