Pengaruh Stimulan Atonik dan Warna Polybag terhadap Pertumbuhan Stek Kopi Robusta

Abstract

The experiment was conducted t o observe t h e e f f e c t of Atonik concentration and the colour of polybag on Robusta Coffee cutting growth. The treatments were four l e v e l s of Atonik concentration combined with two polybag colour. The experimental r e s u l t s showed that the colour of polybag had no e f f e c t on the all observed variables. Atonik concentrat i o n 1 : 2000 on black polybag and Atonik concentration 1 : 2000 on transparant polybag were able t o stimulate the root system and the length of shoots. The placement of cutting in group gave s i g n i f i c a n t e f f e c t on the length of shoot, root dry weight and the t i m e of shoot format ion, due t o duration of sunshine.