摘要 : During 2009 and 2010, field experiments were conducted in Ljubljana to study the efficacy of three herbs (oregano, rosemary and common lavender) as intercrops for reducing <i>Phytomyza</i> (<i>Napomyza</i>) <i>gymnostoma</i> damag... 展开 During 2009 and 2010, field experiments were conducted in Ljubljana to study the efficacy of three herbs (oregano, rosemary and common lavender) as intercrops for reducing <i>Phytomyza</i> (<i>Napomyza</i>) <i>gymnostoma</i> damage on onion plants. Two onion cultivars ('Holandska rumena' and 'Ptujska rdeca') were involved in the experiment. Results of our research indicated that in 2009 different intercrops did not have an influence on the cultivar Holandska rumena, meanwhile cultivar Ptujska rdeca gained the highest yield in control treatment (184.2+or-6.6 g) and the lowest one in treatment where oregano plants were interplanted (147.2+or-6.1 g). Plants of common lavender proved to be the less suitable in intercropping system as the yield of both onion cultivars was lowest in 2010. Mean index of damage caused by Allium leaf miner was influenced as by onion cultivar as plant species which were used as intercrops. In 2009 we noted less damage in 'Holandska rumena', the lowest range of damage on onion (1.36+or-0.03) was in treatment with oregano as intercrop. In 2010 we did not confirm differences in the extent of damage between cultivars, similar as also between different species of intercrops. We conclude that, in 2009 and 2010, the Allium leaf miner did not reduce the yield of onion, therefore we cannot expose any intercrops tested as a suitable plant species for diminishing the damage caused by the larvae on onion. 收起