Respons Vegetatif Bibit Kopi Robusta terhadap Vermikompos Cascara dan Media Tanam Organik

Abstract

Pembibitan kopi robusta membutuhkan media tumbuh yang mendukung pertumbuhan vegetatif. Penelitian ini bertujuan menganalisis respons vegetatif bibit Coffea canephora terhadap vermikompos berbahan cascara dan media tanam organik pada beberapa rasio bahan organik terhadap tanah. Penelitian menggunakan rancangan kelompok lengkap teracak (RKLT) faktorial dua faktor, yaitu jenis bahan organik dan rasio bahan organik terhadap tanah. Jenis bahan organik terdiri atas vermikompos berbahan cascara, media tanam organik, dan kombinasi keduanya, sedangkan rasio yang digunakan adalah 1:4, 1:6, dan 1:8. Parameter yang diamati meliputi tinggi tanaman, diameter batang, jumlah daun, panjang akar, serta bobot basah dan kering tajuk maupun akar. Hasil penelitian menunjukkan bahwa jenis bahan organik berpengaruh nyata terhadap beberapa parameter. Media tanam organik lebih menonjol pada tinggi tanaman, sedangkan vermikompos cascara lebih menonjol pada parameter daun, tajuk, dan akar. Rasio bahan organik secara umum tidak berpengaruh nyata, sedangkan interaksi perlakuan berpengaruh nyata pada jumlah daun, panjang akar, dan bobot basah akar.

Robusta coffee nurseries require growing media that support vegetative growth. This study aimed to analyze the vegetative response of Coffea canephora seedlings to cascara vermicompost and commercial organic growing media at several organic material-to-soil ratios. The experiment used a two-factor factorial randomized complete block design (RCBD): organic material type and organic material-to-soil ratio. The organic materials were cascara vermicompost, commercial organic growing media, and their combination, while the ratios were 1:4, 1:6, and 1:8. The observed parameters included plant height, stem diameter, leaf number, root length, and shoot and root fresh and dry weights. The results showed that organic material type significantly affected several growth parameters. Commercial organic growing media showed a more prominent response in plant height, whereas cascara vermicompost was more prominent in leaf, shoot, and root parameters. The organic material-to-soil ratio generally had no significant effect, while treatment interaction significantly affected leaf number, root length, and root fresh weight.