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All Journal Jurnal Agronomi Tanaman Tropika (JUATIKA) Innovative: Journal Of Social Science Research
Musthofa, Nurul
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Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Law, Crime, Criminology & Criminal Justice Public Health Other

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Optimizing The Growth of Corn Plant (Zea mays L) Local Variety of North Sumatera, which has been Irradiated with Gamma-Rays M1 with Urea Fertilizer Application Musthofa, Nurul; Mustamu, Novilda Elizabeth; Sitanggang, Kamsia Dorliana; Triyanto, Yudi
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 7 No. 1 (2025): Vol. 7 No. 1 (2025): Vol. 7 No. 1 (2025): Jurnal Agronomi Tanaman Tropika (JUAT
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v7i1.4233

Abstract

Corn (Zea mays L.) is the second most important food crop after rice and is a cereal crop that grows in various regions worldwide. Local varieties of corn in North Sumatra require high nutrient levels for optimal cultivation, particularly nitrogen (N), which is commonly supplied through urea fertilizer. The high demand for nitrogen in urea often leads farmers to apply it in inappropriate doses, resulting in several agronomic issues. This study aims to evaluate the growth of local varieties of corn in North Sumatra in response to different doses of urea fertilizer. The research was conducted in the experimental field in Perbaungan Village, Hulu Bilah District, Labuhanbatu Regency, North Sumatra, from December 2024 to February 2025. A Non-Factorial Completely Randomized Design (CRD) was employed, consisting of five treatment levels, each repeated four times. The urea fertilizer doses applied were as follows: control (no treatment), 2 g/polybag, 4 g/polybag, 6 g/polybag, and 8 g/polybag. The results indicate that varying doses of urea fertilizer significantly influence the growth of local North Sumatra corn plants, particularly in plant height and stem diameter. The optimal dose of urea fertilizer for promoting the development of these corn plants is determined to be 4 g/polybag.
Pengaruh Perceived Organizational Support Dan Kepuasan Kerja Terhadap Turnover Intention Pada Pekerja Bagunan PT. Sumberarta Mitra Jaya Kabupaten Tangerang Musthofa, Nurul; Dwi Lestari, Wuryaningsih
Innovative: Journal Of Social Science Research Vol. 3 No. 5 (2023): Innovative: Journal of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

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Penelitian ini dilakukan bertujuan untuk menganalisis pengaruh perceived organizational support dan kepuasan kerja terhadap turnover intention pada pekerja bagunan Pt. Sumberarta Mitra Jaya Kabupaten Tangerang. Penelitian ini menggunakan metode penelitian kuantitatif dengan pendekatan deskriptif dan kausal. Populasi dalam penelitian ini adalah Pekerja Bagunan PT. Sumberarta Mitra Jaya Kabupaten Tangerang yang berjumlah 51, sehingga populasi dalam penelitian ini berjumlah 51. Dalam Penelitian ini peneliti menggunakan Teknik sampling sensus atau sampling total. Sehingga sampel dalam penelitian ini adalah 51 orang pekerja bagunan. Penelitian ini menggunakan metode pengumpulan data dengan menggunakan kuesioner model likert. Teknik pengumpulan datanya menggunakan kuesioner melalui internet. Teknik analisis data penelitian ini dengan menggunakan perangkat lunak SPSS V23. Hasil penelitian ini adalah perceived organizational support berpengaruh negatif terhadap turnover intention. Terdapat pengaruh kepuasan kerja terhadap turnover intention pada karyawan. Perceived organizational support dan kepuasan kerja berpengaruh terhadap turnover intention
Co-Authors Dwi Lestari, Wuryaningsih Mustamu, Novilda Elizabeth Sitanggang, Kamsia Dorliana Yudi Triyanto