Influence of ground and foliar fertilization on vegetative proprieties and volatile oil for Origanum vulgarL.

Abstract

Pot trial was conducted out during the growing season of 2012-2013, cultivar Origanum vulgare L., located at two locations, to find out a better fertilizer formula to the growth and aromatic oils content of sweet marjoram plants. Twelve fertilizer formula were supposed as a treatments , which formatted from organic fertilizer Reset (4-4-3) NPK  at 10 g.pot ^-1 , chemical fertilizer Jordan DAP  at 5 g.pot ^-1 , organic fertilizer at 5 g.pot^-1  + chemical fertilizer at 2.5 g.pot^-1  , foliar spray with humic acid at 3 mg.L^-1 , foliar spray with organic acid at 50 mg.L^-1 and control without fertilization. Results study can be summarized as follows: Vegetative properties : All fertilizer formula indicated significant effects on vegetative growth of plants , fertilizer formula from organic fertilizer at 5 g.pot ^-1 + chemical fertilizer at 2.5 g.pot^-1 + foliar spray with arginic acid at 50 mg.l^-1 gave a high plant length , branch numbers per plant , fresh and dry weight of vegetative parts were(47 cm in Anbar location-1^st cut) , (31 branches in Anbar location-2^st cut) 41gm^-1-26gm^-1. Furthermore, results indicated that  foliar spray with humic acid gave a high percentage of fertilizer formula from chemical fertilizer at 4 g.pot^-1 + foliar spray with argininc at 50 mg .pot^-1  gave a high percentage of Thymolof36.43% in second cutting at Al-Anbar location the fertilizer formula from organic fertilizer 5g.pot^-1 + chemical fertilizer at 2.5 g.pot^-1  gave a high percentage from Carvacrol compound in Anbar location-2^st cut was 58.40%, and the fertilizer formula from organic fertilizer5 g.pot^-1 + chemical fertilizer2.5 g. pot^- + foliar spray with arginin50 mg.pot^-1  at to gave a high percentage of 8,1Cineole compound , Caryophllene and Terpenineof 27.32% (Anbar location-2^st) and 16.30% (Anbar location-2^st cut).