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| ARPN Journal of Agricultural and Biological
Science December 2017 | Vol. 12 No. 12 |
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Title: |
Screening of okra
genotypes (Abelmoschus esculentus L.) against jassid (Amrasca
biguttula biguttula Ishida) under agro-climatic conditions
of Bahawalpur, Pakistan |
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Author (s): |
Jahangir Ashraf, Muhammad
Waqar Hassan and Moazzam Jamil |
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Abstract: |
Okra (Abelmoschus esculentus
L.) is one of the important vegetable crops grown all over
the world from tropical to sub-tropical areas. It can be
grown throughout the year. It is also grown in Pakistan.
There are many diseases and a number of insects which cause
severe damage to okra and among these, jassid (Amrasca
biguttula biguttula Ishida) is an important sucking pest,
which causes damage by sucking the cell sap. Thus, current
study was conducted regarding varietal screening of okra
genotypes against jassid. Five different varieties, i.e.,
Green wonder, Local cultivar, Pusa swani, Sabz pari and
Sharmeeli were sown and investigated for jassid infestation.
All genotypes were non-significantly different from each
other regarding jassid population. Results showed maximum
jassid population on Pusa swani (6.256 ± 1.978 per leaf) and
minimum was on Green wonder (4.937 ± 1.561 per leaf). Jassid
population significantly varied on okra genotypes with
respect to different dates of observation, i.e. maximum
jassid population was recorded on 29th of June and minimum
was on 11th of May. Host Plant Susceptibility Indices (HPSIs)
for okra genotypes showed that Pusa swani had maximum value
(23%) and minimum on Green wonder (17%). Subsequently yield
was maximum in Green wonder variety and minimum in Pusa
swani and Sabz pari. Correlation of environmental factors
(average temperature and relative humidity) showed
temperature had negative and humidity had a positive
correlation with jassid population. This study will be
helpful for managing the A. biguttula on okra under agro
climatic conditions like in Bahawalpur. |
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Title: |
Effect of spraying the
aqueous extract of licorice roots on fruit cracking in
Ziziphus Spp. (Mill.) cultivars planted in Basra province –
Iraq |
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Author (s): |
Manal Zbary Al-Mayahi, Jamal
Abdul Ridha Al Rabea’a and Murtadha Hussein Fayadh |
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Abstract: |
This study was conducted
during the growing season (Sept., 20th, 2013 – April, 20th ,
2014) at private orchard at Abu Al Khaseeb area, Basra,
Iraq, to study the effect of spraying the aqueous extract of
Licorice Roots on the phenomenon called fruit cracking in
some Ziziphus spp. (Mill.) cultivars, as follow: Bathri,
Toffahi, Mallasi, Laimoni, Baidh Al Asfoor and Hindi. The
results showed a significant superiority of Toffahi in the
percentage of cracking, Cracks number in fruits and length
and wide of crack, which was significantly not different
from the Hindi cultivar, which belongs to the same species
Ziziphus mauritiana comparing with other studied cultivars.
While the cultivars Bathri, Mallasi and Laimoni, which
belong to the species Ziziphus spina- christi were superior
in the percentage of calcium Pectate in fruits, also Bathri
was superior in the percentage of T.S.S. |
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Title: |
Leakage, evaporation and
sedimentation affecting water storage in arid areas: case
studies of the Foum el Gherza and Gargar dams, Algeria |
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Author (s): |
Benfetta HNE and Ouadja A |
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Abstract: |
Most dams in arid areas face
storage losses from leakage, sedimentation, and evaporation.
We assessed these losses at the Gargar and Foum el Gherza
dams in Algeria based on a long-term dataset supplemented by
physicochemical analyses. Leakage and evaporation were the
main loss pathways at the Foum el Gherza and Gargar dams,
respectively. Estimated total losses were 46 hm3 (about 98%
of total capacity) and 166.8 hm3 (about 98% of total
capacity) at Foum el Gherza and Gargar dams, respectively.
Water and capacity losses should be assessed at a
case-by-case level to generate effective solutions for
implementation in Algerian dams. |
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