Sweet-potato (Ipomoea batatas [L.] Lam.) is the 3 rd most important root and tuber plant in the world, after potatoes and cassava. The knowledge of the structure of Genotype × Environment interaction (GEI) could assist in the development of cultivars of sweet-potato. The objective of this research was to select superior sweet-potato genotypes in Indonesia based on Finlay-Wilkinson regression, additive main effect and multiplicative interaction (AMMI) analysis, AMMI stability value (ASV), and Genotype plus Genotype × Environment (GGE) biplot methods. Genetic materials evaluated in this research were 10 Indonesian superior genotypes developed by the

Penelitian ini bertujuan untuk Menduga keragaan karakter kuantitatif 9 jenis sagu di Kampung Marau, Distrik Oridek, Kabupaten Biak Numfor, Menduga karakter yang dapat menunjukkan variasi antara genotipe, Menduga karater yang menunjukkan variasi terbesar dan memiliki korelasi yang kuat. Penelitian dilaksanakan Kampung Marau, Distrik Oridek Kabupaten Biak Numfor pada Bulan Maret 2020 sampai dengan Mei 2020. Penelitian ini menggunakan metode Deskriptif Kuantitatif dengan teknik pengamatan secara langsung terhadap tanaman sagu. Variabel yang diamati terdiri dari jumlah anakan, jumlah daun dewasa, jumlah anak daun, panjang anak daun, lebar anak daun, luas anak daun, panjang tangkai daun/petiol, lebar petiol, lingkar batang, tinggi batang, dan diameter batang. Data yang diperoleh di analisis menggunakan  uji Z untuk, Analisis Komponen Utama (PCA), Analisis Biplot, analisis cluster. Hasil menunjukkan Terdapat tiga karakter yang menunjukan keragaan terbesar pada pada 9 jenis tanaman sagu di Kampung Marau. Terdapat 4 komponen utama yang menyebabkan keragaman pada genotipe sagu yang diamati. Karakter yang menunjukkan keragaman terbesar berdasarkan hasil biplot adalah tinggi batang dan panjang tulang daun. Terdapat tiga kluster utama berdasarkan tingkat kemiripan genotipe sagu asal Kampung Marau

The objective of this study was to develop soybean lines adapted to low light intensity for intercropping with rubber trees. The experiment was conducted in the University Farm experimental field in Cikabayan, from September to December 2007. A total of 67 advanced (F7) soybean lines were evaluated under shading and open field in an Augmented Design experiment. Parental lines Ceneng, Pangrango, Godek and Slamet were used as control. The results showed that the number of filled pod has the highest direct effect on yield (0.552). Soybean lines selected for tolerance to low light intensity based on number of filled pod are PG-36-8, CP 32-1, CG, 23-7, CS-38-1, CS- 45-4, CS-52-1, GC- 22-10.

This study aimed to determine the level of sweetness of sugarcane growing in the village of Wariori Indah. This research was conducted in Wariori Indah village, Masni district, Manokwari regency in August 2020. The method used in this study was a descriptive method with field observation techniques. There were 5 types of sugarcane grown by the people of Wariori Indah Village, namely Red Sugar Cane (Meresa Ekeni), Yellow Green Sugar Cane (Meresa Ofrha), Yellow Sugar Cane (Meresa Oruk), White Striped Red Cane (Meresa Epsi), and Green Stripes Red Cane (Meresa Ofrha). The results of the study found that there were differences in the level of sweetness in the sugarcane plants observed. Yellow green sugarcane has a high level of sweetness (15.2), followed by yellow sugar cane (14.0), and red sugar cane (13.3), while white stripes red cane and green stripes red cane stripes having the same level of sweetness, namely 12.3.

The purpose of this study was to determine the application effect of some organic fertilizers and inorganic fertilizers on the intensity of bean leaf rust disease. This study was designed using a Randomized Block Design (RAK), repeated 3 times, with 10 treatments, namely control (P0), Papua Nutrient (P1), POC Agrica (P2), NPK 16:16:16 (P3), POC Nasa (P4), Green Tonic (P5), Liquid Chemical Fertilizer Solution (P6), Urea + KCL + Phosphate (P7), Organic Fertilizer MX Bio Bas BWI (P8), and SP – 36 (P9). The results showed that the application of Papua Nutrient fertilizer has a better effect in suppressing the development of the intensity of bean leaf rust disease. The resistance of all treatments to the bean leaf rust disease studied was classified as moderately resistant.