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Pengaruh Media Tanam dan SADH terhadap Pertumbuhan dan Perkembangan Tanaman African Violet (Saintpaulia ionantha) Sari, Fitria; Mattjik, Nurhajati Ansori
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 1 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (682.876 KB) | DOI: 10.24831/jai.v32i1.1434

Abstract

The purpose of the experiment was to identify  the effect of growing medium and SADH (Succunic Acid Dimethyl Hydrazide) on growth and development of African Violet (Saintoaulia ionanthqJ. The experiment was conducted in Baranang Siang Bogor (240 m above sea level), and arranged in factorial randomized complete block design. The first factor was medium (1 cocopeat : 1 sand : 1 compost ;  1 cocopeat : 2 sand : 1 compost ; 1 cocopeat : 1 sand : 2 compost ;  2 cocopeat  : 1 sand :  1 compost). The second factor was concentration of SADH (0, 15, 30, 45 mg/l). There was not significant effect of medium and SADH qn vegetative growth, except leaf area. SADH (15 mg/l) and medium 4 (2 cocopeat : 1 sand : 1 compost) had largest leaf Growing medium and SADH had significant effect on generative growth especially on time to visible flower buds, flower bud number, flower number, flower diameter and flower senessence. SADH (15 mg/l) applied to medium 4 (2 cocopeat : 1 sand : 1 compost) initiated time to flower. SADH (30 mg/l) applied to medium 4 affected to highest number of flower buds, and SADH (0 mg/l) applied to growing medium 4 affected highest flower diameter.
Screen Time and Early Childhood Social–Emotional Development Among Children Aged Five to Six Years Sari, Fitria; Lilawati, Agustien
Journal of Educational Management Research Vol. 4 No. 6 (2025)
Publisher : Al-Qalam Institue

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61987/jemr.v4i6.1567

Abstract

Digital exposure has become a dominant part of early childhood routines and increasingly influences social–emotional development. This study aims to analyze the relationship between screen time, peer interaction, emotional regulation, and parental mediation in children aged 5–6 years. Using a qualitative case study, data were collected from six children, two teachers, and four parents through interviews, observations, and documentation. The findings show that high screen exposure triggers weakened emotional regulation, reflected in frequent tantrums, low frustration tolerance, and abrupt mood shifts. Excessive screen time also reduces peer interaction, indicated by 52% low group participation, 48% reluctance to share, and 43% preference for solitary play. Conversely, parental mediation improves social–emotional development by reinforcing cooperation, conflict resolution, and verbal expression. The novelty of this study lies in demonstrating that screen time becomes beneficial only when accompanied by active parental guidance. The results recommend collaborative screen management between schools and families to optimize children’s social–emotional growth.