Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Jurnal Ilmiah Inovasi
Siman Suwadji
Institut Pertanian STIPER Yogyakarta
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Education Other

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Keragaan Kualitas Pertumbuhan Batang Pohon Balsa (Ochroma pyramidale) Umur 1 Tahun Di KP2 INSTIPER Ungaran Siman Suwadji; Nanda Satya Nugraha; Sri Widata
Jurnal Ilmiah Inovasi Vol 26 No 02 (2026): Agustus (In Progress)
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jii.v26i02.7198

Abstract

This study aimed to evaluate the growth performance of stem quality in 1-year-old balsa (Ochroma pyramidale) trees using the census method (100%). The research was conducted in April 2026 at the Educational and Research Forest (KP2) INSTIPER Ungaran, assessing a total population of 53 sample trees. The observed parameters included diameter at breast height (DBH), total height, clear bole height (CBH), stem straightness, number of active branches, stem taper, apical dominance, and pest/disease infestation levels. The stem quality assessment was calculated using the Stem Quality Index (SQI). The results showed an average DBH of 3.99 cm and an average total height of 283.23 cm. Based on the SQI values, the majority of the balsa trees fell into Quality Class B (Good) at 77.36%, followed by Class C (Moderate) at 9.43%, Class D (Poor) at 11.32%, and Class A (Excellent) at 1.89%. Correlation analysis among variables revealed a strong positive correlation between DBH and total height, while a negative correlation was found between the percentage of clear bole height and the total stem quality score, indicating that young trees have not yet optimally developed a stable mature canopy.
Co-Authors Nanda Satya Nugraha Sri Widata