this study was carried out during summer 2014 in Siano Research Station- the
Agricultura Research Center in Lattakia . Four varieties of Cowpea: Dolicho (entrance),
Blackey (entrance), Almaarefa (Local) and local
cultivar were planted and compared
concerning the vegetative growth , productivity
and quality of green pods.
The results showed the superiority of Almaarefa cultivar in some vegetative traits
:plant hieght (166.66) cm compared with local cultivar 116.58 cm ,number of leaves on
plant and( 27) leaves and( 17) leaves for local cultivar, and plant leaves area( 7840.23)
cm2 for Almaarefa comparing with( 4499.75) cm2 for local cultivar
As well as it had a maximum pod length( 16.71) cm and highest grain number of
pod( 9.44) ,while Blackey cultivar was the most superior comparing with
other cultivars in productivity( 0.6229) kg \ m 2 and pod's number/m2 ( 81.069)
Whereas Almaarefa had the lowest productivity( 0.4935) kg/m2 and lowest pod's number
( 65.89)pod/m2.
The results also showed that the local cultivar had the most vitamin C content
comparing with other cultivars by( 23.765%) and in dry matter by (15.38%) , while
there was no significant differences between protein green pods content.
This study was conducted to evaluate the effect of seed Rhizobia-treating
and Cowpea severe mosaic virus (CPSMV) inoculation on bacterial nodulation
and nitrogen fixation in cowpea. CPSMV was isolated from infected plants,
College of Agriculture,
Abu-Ghraib, Baghdad, IRAQ, the Rhizobia was isolated
from nodules on roots of cowpea plants. The plants were inoculated by the
virus 2 weeks after germinations. Nodules on roots of Rhizobia-treated plants
were formed while no nodules were observed on non-treated ones. The mean
number of nodules was 24.93\ plant on virus inoculated plants compared to
59.86 nodules\plant on non-inoculated ones. Significant reduction in nodules
weight was induced by the virus, 0.62 gm on the virus inoculated plants
compared to 2.13gm on non-inoculated ones. It has been found that the
Rhizobia induced significant increase in nitrogen percentage at p=0.05 in the
foliage, 1.29% in plants non-treated with Rhizobia non-inoculated by the virus
compared with 2.502% in Rhizobia treated-virus inoculated plants and 2.550%
in Rhizobia treated non inoculated plants. The virus caused an increase in
nitrogen percentage, 1.877% compared to 1.29% in non-inoculated plants. The
Rhizobia caused an increase in pods number\plant, seed number\plant, and seed
dry weight (gm)\plant, 25.6, 114, 32.4 compared to 12.8, 70.6, 8.7 in non-treated
plants respectively. The treatment of virus inoculated plant by Rhizobia
induced a significant increase in these values, except with nitrogen percentage
in seeds, 16.4, 84.6, 10.4, 4.3 respectively.
The experiment was conducted at the vegetable research farm, Depart.of
Hort. and Forst. Resea., Nenivah during the growing season of ١٩٩٤ and ١٩٩٥.
The objective of the research was to investigate the effect of plant spacing
(١٠, ٢٠, ٣٠ cm) and phosphorus fertilizer (٠, ٢٥, ٥٠, ٧٥ kg.P٢O٥/donum),on
yield and other related traits of Cowpeas.
