Adult 1 Crop Production 1 Extension agents 1 Humans 1 Middle Aged 1 Needs Assessment 1 Organic Agriculture 1 Organic agriculture (OA) 1 Plant Diseases 1 Riyadh [Saudi Arabia] 1 Riyadh region 1 Saudi Arabia 1 Training needs 1 Weed Control 1 Young Adult 1 adult 1 agricultural extension 1 agricultural land 1 article 1 crop production 1 education 1 farmers knowledge 1 female 1 human information 1 major clinical study 1 male 1 marketing 1 middle aged 1 needs assessment 1