EFFECTS OF CUTTING THE HERB AND THE U E OF NOTROBEIN AND PHOSPHOREIN ASSOCIATED WITH MINERAL FERTILIZERS ON GROWTH, FRUIT AND OIL YIELDS, AND CHEMICAL COMPOSITION 0 THE ESSENTIAL OIL OF CORIANDER PLANTS (Cod narum sativum L.)

This experiment was carried out on coriander plants (Coriandrum stivum L.)
to study the effects of cutting the herb and the \,Ise o( Nol1obein and P ospnorein
biofertilizers plus mineral fertilizers on growth, Quality, fruit and oil yiel S, and the
essential oil composition of conander plants. The results shewed lhal cutting me
herb at 60 day after planting date reduced growth and fruit and essential oil yield or
the fruits. Otherwise, it did not affect fruit quality and essential oil percen age of me
fruits. The results also showed thaI inoculation with Notrobein substituted the effect
of 25% of the minerai N fertilizer used to improve growth of the pianl, yi Id of fruits
and essential oil yield or fruits. The best growth was achieved using Phosphorein
inoculation whether it was used with mineral NPK or witn Notrobeln plu!> 75% N plus
PK. These two treatments gave the talles! plants, highest number of hools and
innorescenceper plant, and the highest yield of both fruits and essential oil. The high
yield was atlribuled to the increase in fruits weight and yield. These two eatments,
on tne other hand, decreased the oil percentage of the fruit. Separation of the
essential oil using GLC revealed eight idenlified components forming rnor than 96%
of oil. Linaloor was the major constituent forming more than 76% of the oil; and Ihe
other constituents were a-Pinene, Camphene, p-Plnene, Limonene, Menthane,
Geraniol, and Euginor. Treatments with bio(ertilizers changed the pe cenlage of
some essential oil components. Phosphore In plus Notrobein treatment gave the
highest records for Linalool (81.3%) and Camphene (1.4%), and the lowest C1-Pinene
(1.7%), p-Pinene (2.9%), and Limonene (1.1 %). Concentrations of Menthone (4%),
Geraniol (3%), and Euginol (3.2%) were slightly or unaffected by thi~ treatment
compared with the control.