Open AccessThe role of agricultural extension on the productivity of arabica coffee farmers’ (Study: Sait Buttu Saribu, Pematang Sidamanik District, Simalungun Regency)
Author(s) -
S N Lubis,
S Wardanti
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/977/1/012050
Subject(s) - likert scale , productivity , agriculture , agricultural extension , simple random sample , sample (material) , arabica coffee , agricultural science , agricultural productivity , extension (predicate logic) , business , marketing , geography , medicine , economic growth , mathematics , statistics , economics , computer science , environmental health , population , chemistry , environmental science , archaeology , chromatography , horticulture , biology , programming language