RESPON PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) DENGAN PEMBERIAN BERBAGAI KONSENTRASI PGPR (Plant Growth Promoting Rhizobacteria) AKAR KAKAO

Irawan, Triono Bambang and Soelaksini, Liliek Dwi and Nuraisyah, Anni (2022) RESPON PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) DENGAN PEMBERIAN BERBAGAI KONSENTRASI PGPR (Plant Growth Promoting Rhizobacteria) AKAR KAKAO. Jurnal Ilmiah Hijau Cendekia, 7 (1). pp. 7-17. ISSN 2477-5096

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Abstract

The aims of this study were: (i) to determine the response of cocoa seedling growth to cocoa root PGPR; (ii) determine the appropriate PGPR concentration of cocoa roots for the growth of cocoa seedlings. The research was carried out in June – December 2021, located in the Jember State Polytechnic nursery with an altitude of 89 m above sea level. The study used non-factorial RAK, namely: PO = PGPR concentration 0 ml/liter/5 polybags; P1 = PGPR concentration 50 ml/ liter / 5 polybags; P2= PGPR concentration 100 ml / liter / 5 polybags; P3 = PGPR concentration 150 ml / liter / 5 polybags and 6 replications. The results showed: (i) Cocoa seedling growth response by giving PGPR (Plant Growth Promoting Rhizobacteria) Cocoa Roots had a significant effect on plant height,number of leaves, stem diameter, wet weight and dry weight of roots, number of roots and root volume; (ii) Provision of optimal PGPR concentration of cocoa roots on root dry weight : 109 ml / l and root wet weight : 99 ml / l.

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