Pertumbuhan Jenis – Jenis Ubi Kayu (Manihot esculenta. Crantz) Berdasarkan Ukuran Stek

Abstract

Cassava is an important food commodity and has a strategic role for people's lives and the country's economy. Development efforts continue to be made to increase production and productivity. This study aims to analyze the growth and production of several types of cassava in North Sumatra based on the size of the cuttings used as seeds. The cassava seeds used were obtained from cassava plants cultivated by the community consisting of 4 types (genotypes), namely: Malaysian cassava (G1), Roti (G2), Adira 1 (G3), and Genderuwo Hitam (G4). This research was conducted at St Bunga Sedap Malam XVIII, Medan Selayang, Medan, North Sumatra from August to December 2022. This study used a Randomized Block Design (RBD) with 2 treatment factors. The first factor is genotype (Malaysia; Roti; Adira 1 and Genderuwo Hitam). The second factor is the size of the cuttings (1; 2; 3 and 4 buds). The results showed that the genotypes were significantly different in parameters of plant height at 6, 8 and 10 WAP and growth percentage. At 2 and 4 WAP, stem diameter, number of twigs per tree, tuber weight, tuber diameter, tuber number, and tuber length were not significantly different. The treatment of cuttings size had no significant effect on all observed variables. There was an interaction between genotype and cuttings size on the growth percentage parameter, but no significant effect on plant height, stem diameter, number of twigs per tree, tuber weight, tuber diameter, tuber number, and tuber length.