Development of Pratylenchus Coffeae in Biochar Applied Soil, Coffee Roots and Its Effect on Plant Growth

Biochar improve physical, chemical and biological properties of soil. It may also be used as botanical pesticides. The experiment was aimed to determine the effect of biochar on population development of parasitic nematode Pratylenchus coffeae. The experiment was carried out in Nematology Laboratory and in a greenhouse of Indonesian Coffee and Cocoa Research Institute (ICCRI), Jember, Indonesia. The experiment was arranged according to completely randomized design with six treatments of biochar concentrations, i.e. 4%; 3%; 2%; 1%; 0.5% and 0% dry weight of soil. Research results revealed that biochar application of 4.0% was effectively killed 74.5% of P. coffeae, while the lowest mortality level of 37.5% at biochar 0.5% treatment. In the greenhouse trial, application of biochar 4.0% was the most effective in suppressing the population of parasitic nematode in coffee seedlings. Application of biochar was also able to increase the growth and biomass of coffee seedlings

Hubungan Antara Kesadaran Merek, Kualitas Persepsian, Kepercayaan Merek Dan Minat Beli Produk Hijau

To enrich research related to green product purchase intention this study is focused on young educated consumers in Indonesia. This is reinforced by the recent rise in green business management at several companies, but still less education and public awareness on environmental issues and healthy living. This study investigates the relationship among brand awareness, perceived quality, brand trust and purchase intention toward green product “Ades” mineral water used purposive sampling with educated young consumers as subjects. The survey with questionnaires was conducted to collect the data. By implemented structural equation modeling (SEM) the results indicate that brand awareness has a significant effect toward purchase intention. Brand awareness and perceived quality have a significant and positive effects toward brand trust. Another result in this study shows that there is no positive effect of perceived quality and brand trust toward purchase intention

Distribution of Soil Fertility of Smallholding Arabica Coffee Farms at Ijen-Raung Highland Areas Based on Altitude and Shade Trees

Soil fertility is one of the most important factors influencing plant growth and productivity and it depends on the availability and quantity of nutrients in the soil. To study soil fertility status of an area, a study on soil chemistry and physics has to be conducted. The aim of this study was to investigate soil fertility status of smallholding Arabica coffee farms based on altitude and shades trees utilization. This research was carried out in April-August 2012 at IjenRaung highland areas by field survey. The results showed that the soil contained high content of organic carbon, nitrogen total, and C/N ratio; low available phosphorus; moderate to high cation exchange capacity, and low base cation of calcium, magnesium, and potassium; as well as slightly low pH. Higher altitude tended to have higher C organic and N total content, C/N ratio as well as pH. In contrast, in lower altitude tended to have lower available P, base saturation, as well as Ca, Mg, and K content. The dominant shade trees for coffee farming at the Ijen-Raung highland areas were suren (Toona sureni) , dadap (Erythrina sp.), kayumanis (Cinnamomum zeylanicum), pinus (Pinus mercusii), and kayu putih (Eucalyptus globulus). Different shade tree species resulted in different of soil fertility. Shade trees tended to influence cation exchange capacity from moderate to high, pH slightly acid, high base saturation, and low P available. Suren tree influenced better base cation than that of other trees but dadap tree was better in increasing soil fertility

Intensity of Vascular Streak Dieback in Different Cocoa Clones and Various Agro-climatic Conditions

Vascular streak dieback (VSD) is one of the main diseases on cocoa. This disease can produce a heavy damage in susceptible plants. Agro-climatic condition influences the VSD disease severity level. A study on the relationship between agro-climatic condition and VSD disease severity was conducted in eight locations which were selected based on difference in agro-climatic conditions including altitude, rainfall, number of wet, and dry months. Randomized complete block design was used consisting of eight agro-climatic conditions as treatments which consisted of 200 trees samples, and scored for VSD intensity. A study was also conducted on the response of cocoa clones with different level of resistance at different altitude at Kendeng Lembu, Jatirono, Sungai Lembu, Banjarsari, and Sumber Asin Plantations. A split plot design was applied consisting of two factors. The first factor was location including Pager Gunung (highland) and Besaran (lowland). The second factor was clone resistance with two levels: PA 191 (resistant) and BL 703 (susceptible). VSD scores and stomatal characteristics (stomata number, stomata diameter, and stomata aperture) were determined. The results of experiment showed that VSD scoring differed significantly between the eight agro-climatic conditions. The highest VSD score occurred in the lowland (Gereng Rejo, Banjarsari Plantation, 38 m asl.), where the average annual rainfall was 2161 mm, with five dry months. Cocoa trees in Sumber Asin (580 m asl.), with the average annual rainfall of 2302 mm and 8.5 wet months/3.5 dry months were mostly free of VSD disease. Altitude was positively correlated with rainfall, and negatively correlated with VSD severity. Number of wet months was negatively correlated with VSD severity. Conversely, number of dry months was positively correlated with VSD. The result indicated that genotype, environment, or their interaction did not significantly affect number and aperture of stomata. Although stomatal diameter was significantly affected by environment, genotypes or their interaction with environment did not influence this character

Pengembangan Modul Pembelajaran IPA Berbasis Etnosains Materi Interaksi Makhluk Hidup dengan Lingkungannya untuk Menanamkan Jiwa Konservasi Siswa Kelas VII SMP

The purpose of this study is to develop ethnics-based science learning modules that have the feasibility to be used after validation. The research method uses the Borg & Gall development model which consists of 6 stages, namely a preliminary study stage, a research planning stage, a design development stage, a limited field test stage, a revised stage of the results of a limited field test stage, and a final product stage. This research is limited to the developing stage, namely the feasibility of the module. The instrument used was a questionnaire for module eligibility. The research subjects were 3 lecturers from Bengkulu State Islamic Institute which consisted of 1 language expert lecturer, 1 material expert lecturer, and 1 media expert lecturer. The results of the questionnaire analysis data by calculating the percentage of achievement in each component of the percentage of achievement of the eligibility criteria of the science learning module based on ethnoscience that was developed is suitable for use with a percentage of 92.00%, 76.25%, 86.25% (the category is very feasible, feasible, and very worthy). From the results of these data, it can be concluded that the module is feasible to be used as teaching material in supporting the teaching and learning process on the material interaction of living things with their environment in junior high school for class VII

Pengaruh Penambahan Tepung Kepala Udang dalam Pakan terhadap Pigmentasi Warna pada Ikan Koi (Cyprinuscarpiolynn) Jenis Kohaku

Koi as ornamental fish excellence in body shapes with interesting colour. Chromatopore cells took responsibility to colour of fish. Enhancing of colour possible with added of carotenoid source like shrimp head meal in feed. This study purposes to assessed effects of shrimp head meal to enhance colour of koi in different percentages of inclusion (0, 10, 12 and 14 %). Koi in juvenile size, 3 month old, 28 g of body weight and 12 cm of total length used for this study. Five trained persons by used Toca Colour Finder (TCF) justified scores of colour patterns during 60 days of culture. Results showed 10 % inclusion of shrimp head meal optimum in carotenoid those effect to enhances of colour. Positive corelation showed between amount of chromatopore cells and percentage of inclusion of shrimp head meal

Buying Behavior In Online Food Delivery Applications During The Covid-19 Pandemic

This study aims to review the effect of discount framing, brand reputation, purchase intention, and actual behavior based on online food delivery applications during the COVID-19 pandemic. The population, in this study are users of online food delivery applications throughout Indonesia, with the unit of analysis being the individual. Sampling in this study used the purposive method, namely respondents who filled out online questionnaires with total of 119. The data analysis technique in this study used SEM-AMOS version 23. The results showed that discount framing had a positive effect on brand reputation and purchase intention, brand reputation has a positive effect on purchase intention, and purchase intention has a positive effect on actual behavior. The implications of the results of this study for application owners are to know the effect of discount framing, brand reputation, and purchase intention so that they can take strategies and policies related to these matters. For application, users are to be able to use applications that provide discount framing according to their needs