Abstract:
Coriander (Coriandrum
sativum) is one of the medicinal plants that
its essential oil yield has abundance
medicinal and food value. One of the main
concepts in the production of medicinal
plants is to increase of yield by
biofertilizers. In order to evaluate the
separate and combined effect of nitrogen
and biofertilizer Nitroxin (mixture of
bacteria Azotobacter and Azospirillum)
fertilizer on vegetative traits, grain yield and
essential oil yield of coriander, an
experiment was conducted as a factorial in a
randomized complete block design (RCBD)
with three replications in the field research
of Islamic Azad University, Jiroft, Iran. The
experiment factors were consisted of three
levels of nitrogen (0, 75 and 150 kg·ha-1)
and three levels of Nitroxin biofertilizer
(0, 2 and 4 L·ha-1). The results showed that
application of 150 kg·ha-1 N significantly
increased height and stem diameter, number
of lateral branches and shoot dry weight,
compared with control and application of 75
kg·ha-1 N. Nitroxin biofertilizer significantly
improved vegetative traits of coriander
when compared with control, so that
application of 4 L·ha-1 of Nitroxin caused
increase the mean of traits compared to
control. In the most evaluated growth traits,
the highest means were obtained with
combining of 150 kg·ha-1 N with 4 L·ha-1 of
Nitroxin. Application of 150 kg·ha-1 N
increased the number of umbels per plant,
1000 seeds weigh, seed yield and essential
oil yield, 29.9, 33.0, 72.9, 40.7, 147.4 and
177.1 percent, compared with the control,
respectively. In the presence of Nitroxin,
yield and yield component and essential oil
yield of coriander increased significantly.
Maximum average of these traits obtained
when 4 L·ha-1 of Nitroxin was applied. Integrated of nitrogen and Nitroxin
increased yield and yield component and
essential oil yield significantly, when
compare with application separately of
them. So that the maximum mean of these
traits obtained with combined application of
150 kg·ha-1 nitrogen and 4 L·ha-1 of
Nitroxin. The results of this research was
showed that application Nitroxin
biofertilizer have an important role in
increase of quantity and quality yield of
coriander medicinal plant and can be used
as an alternative of nitrogen fertilizer in
sustainable agriculture.
