COMPARATIVE ASSESSMENT OF LOCAL TOMATO VARIETIES UNDER ORGANIC AND CONVENTIONAL CULTIVATION
Authors: Aglaia Liopa-Tsakalidi and Kleopatra Giannopoulou
Aglaia Liopa-Tsakalidi: Department of Agriculture, University of Patras, GREECE.
Kleopatra Giannopoulou: Department of Agriculture, University of Patras, GREECE.
ABSTRACT
This study comparatively assessed the performance of three local Greek tomato varieties—’Chios’, ‘Milo’, and ‘Grentza’—under organic and conventional cultivation systems. The research evaluated phytometric (plant growth), reproductive (flowering and fruiting), and qualitative (fruit characteristics) parameters to determine varietal adaptability and system efficiency. Organic cultivation significantly enhanced vegetative growth, with ‘Chios’ and ‘Milo’ exhibiting 85% and 166% increases in fresh plant weight, respectively, compared to conventional farming. Reproductive performance varied: ‘Chios’ produced 159% more fruits under organic management, whereas ‘Grentza’ showed higher fruit quality (↑ °Brix) but reduced yield (-77%). Fruit quality traits, including soluble solids and average fruit weight, were generally superior in organic systems, suggesting improved nutritional and organoleptic properties. The findings highlight genotype-dependent responses, with ‘Chios’ and ‘Milo’ demonstrating strong suitability for organic production, while ‘Grentza’ may require tailored management. This study underscores the potential of local varieties in sustainable agriculture, balancing yield and quality while conserving agrobiodiversity.
Keywords: Organic farming, conventional farming, local tomato varieties, agrobiodiversity, fruit quality, sustainable agriculture.