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Pengaruh Pemberian Pupuk Organik Terhadap Kandungan Karbon Organik, Nitrogen Total Tanah Dan Hasil Tanaman Jagung (Zea Mays L.) Pada Inceptisols: The Effect of Organic Fertilizer Application on Organic Carbon Content, Total Soil Nitrogen and Corn (Zea Mays L.) Yield in Inceptisols Sofyan, Emma Trinurani; Yulyanti
Agrifarm : Jurnal Ilmu Pertanian Vol 12 No 2 (2023): Jurnal llmu Pertanian Agrifarm
Publisher : Universitas Widya Gama Mahakam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24903/ajip.v12i2.2578

Abstract

The use of fertilizers as additional nutrition for maize plants needs attention. One of the efforts to optimal this problem is the use of organic fertilizer. This research aimed to study the effect of organic fertilizer  application on organic carbon, total nitrogen and maize (Zea mays L.) yield in Inceptisols. The research was conducted at The Laboratory of Soil Chemistry and Plant Nutrition, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor from June up to November 2022. The design used was Randomized Block Design (RBD) with nine treatments and three replications: (A) Control, (B) NPK, (C) 1OF, (D) ¾NPK + ¾OF, (E) ¾NPK + 1OF, (F) ¾NPK + 1½OF, (G) 1NPK + ¾OF, (H) 1NPK + 1OF, (I) 1NPK + 1½OF. The results showed that the use of Organik fertilizer had a significant effect on soil organic carbon, soil total nitrogen, and maize yield components compared to the control (without fertilizer) and NPK standard. The ¾ of organic fertilizer  (3.75 kg/ha) effectively increased maize yield when mixed with the NPK dose of standard fertilizer at ¾ (262.5+75+37.5 kg/ha). The use of organic ertilizer at that dose can also reduce NPK usage in Inceptisols. Keywords: Organic Fertilizer, C-Organic, N-Total, Sweet Corn, Inceptisol
PENGARUH CITRA MEREK, WORD OF MOUTH DAN KUALITAS PRODUK TERHADAP KEPUTUSAN PEMBELIAN SMARTPHONE XIAOMI DI KOTA BATAM Yulyanti; Sitorus , David Humala
SCIENTIA JOURNAL Vol 7 No 3 (2025): Scientia Journal
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/scientiajournal.v7i3.9783

Abstract

The purpose of this study is to examine the influence of brand image, word of mouth, and product quality on the purchasing decision of Xiaomi smartphones in Batam. This research adopts a quantitative approach using a survey questionnaire as the data collection tool. The sample was selected using purposive sampling technique, with a total of 100 respondents. Data processing was done using SPSS 30. Descriptive statistical analysis was employed to describe the characteristics of the respondents, while multiple linear regression analysis was used to test the relationships between variables. The findings of this study indicate that brand image, word of mouth, and product quality have a significant impact on the purchasing decision of Xiaomi smartphones in Batam.