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All Journal Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Journal of Business Innovation and Research
Anas Iswandi
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science

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The Potency of Azotobacter spp.Isolated from Tidal Land of South Kalimantan to Produce Indole Acetic Acids (IAA) Fakhrur Razie; Anas Iswandi
Jurnal Ilmu Tanah dan Lingkungan Vol 7 No 1 (2005): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.767 KB) | DOI: 10.29244/jitl.7.1.35-39

Abstract

Tidal land area is considered as the most frigile ecosystems. To open this area as agricultural land has to be donecarefully. To reduce the risk of declining the environmental quality of tidal swa,,!p area due to the agricultural activity, lhearea should be managed properly and Wisely especially when using agrochemicals such as fertilizers and pesticides. Inrelation to this, the use of biofertilizer such as Azotobacter spp, a nitrogen fIXing bacterium and IAA producer, might beimportant thingfor this area.The aims of this experiments was to study the ability of Azotobacter isolated from rice' rhizophere grown in tidalswamp area of South Kalimantan, in producing IAA to stimulate the growth of roots of rice cultivar I R-64. The parametersused to evaluate the effect of Azotobacter inoculation were the increase of the surface area of root, length of roots, totallength of roots, fresh, dry weight of rice IR-64 roots and the growth of root hairs.The results showed that Azotobacter produced less IAA in the media containing Urea (18.28-35.54 ppm IAA) comparedto Azotobacter grown in media without Urea (33.89 - 42.01 ppm IAA). Azotobacter T.M. UNST.3 produced the highest IAA(42.01 ppm), therefore they were able to increase the surface of roots, increase the length and weight of roots of rice cultivarIR-64 compared to other Azotobacter strains. In media containing Urea, Azotobacter RG 3.62 produced the least IAA (/8.29 ppm IAA) compared to other Azotobacter strains. However, this particular Azotobacter strain was able to increase the surface area of root, increased the number of root hairs compared to other strains.
The Influence of Consumer Perceptions and Attitudes towards Online Purchasing Decisions through Motivation on the Bukalapak Marketplace during the Covid-19 Pandemic (Study on Bukalapak Marketplace Consumers in Yogyakarta) Iswandi, Anas; Istanto, Yuni; Pujiharjanto, Ambar
Journal of Business Innovation and Research Vol 1, No 1 (2022): Journal of Business Innovation and Research
Publisher : UPN Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jubir.v1i1.8029

Abstract

This study was made to examine the influence of consumer perceptions and attitudes towards online purchasing decisions through motivation on the Bukalapak marketplace during the covid 19 pandemic, this research was applied to Bukalapak consumers in Yogyakarta.  Based on the population and the selected sample, the sampling technique in this study uses the Non-Probability Sampling method, which is a sampling technique that does not provide equal opportunities or opportunities for each element or member of the population to be selected as samples. The considerations in taking the sample selected in this study were: having made a purchase at the Bukalapak marketplace during the Covid-19 pandemic, being in Yogyakarta when making a purchase and being at least 17 years old when making a purchase. The sample size that will be taken in this study is 100 respondents. The data taken is then processed using SmartPLS 3.2.9 software. And the results of this study are all independent variables have a significant positive effect on repurchase decisions.
The Influence of Consumer Perceptions and Attitudes towards Online Purchasing Decisions through Motivation on the Bukalapak Marketplace during the Covid-19 Pandemic (Study on Bukalapak Marketplace Consumers in Yogyakarta) Iswandi, Anas; Istanto, Yuni; Pujiharjanto, Ambar
Journal of Business Innovation and Research Vol. 1 No. 1 (2022): Journal of Business Innovation and Research
Publisher : UPN Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jubir.v1i1.8029

Abstract

This study was made to examine the influence of consumer perceptions and attitudes towards online purchasing decisions through motivation on the Bukalapak marketplace during the covid 19 pandemic, this research was applied to Bukalapak consumers in Yogyakarta.  Based on the population and the selected sample, the sampling technique in this study uses the Non-Probability Sampling method, which is a sampling technique that does not provide equal opportunities or opportunities for each element or member of the population to be selected as samples. The considerations in taking the sample selected in this study were: having made a purchase at the Bukalapak marketplace during the Covid-19 pandemic, being in Yogyakarta when making a purchase and being at least 17 years old when making a purchase. The sample size that will be taken in this study is 100 respondents. The data taken is then processed using SmartPLS 3.2.9 software. And the results of this study are all independent variables have a significant positive effect on repurchase decisions.
Co-Authors Fakhrur Razie Pujiharjanto, Ambar Yuni Istanto, Yuni