THE SESONAL ACTIVITY OF THE MAIN INSECT PARASITOIDS ATTACKING PUPAL STAGE OF THE CABBAGE BUTTERFLY Pieris rapae L. ON DIFFERENT HOST PLANTS.
S.
Awadalla
Economic Entomology Dept. Fac. Agric. Mans. Univ.
author
Hala
EL-Serafi
Economic Entomology Dept. Fac. Agric. Mans. Univ.
author
Salwa
Abdel - Samad
Biological Control Dept. Sakha Agric. Res. Station Plant Protection Res. Inst. Agric. Res. Center.
author
Ekram
Abdou
Biological Control Dept. Sakha Agric. Res. Station Plant Protection Res. Inst. Agric. Res. Center.
author
text
article
2013
eng
The experiment was carried out at the experimental farm of the Plant Protection Department Sakha Agriculture Research Station, Kafr El-Sheikh, during three successive vegetable growing seasons, 2011/12and 2012/13 on cabbage (Brassica oleracea var. capitata L.), cauliflower (B. oleracea var. botrytis L.), and Canola rape (Brassica napu. oleifera L ).
Cabbage plants harboured the highest average percentage of the pupal parasitoids Brachymeria femorata parasitoid during three successive seasons 2011 , 2012 and 2013 represented by 17.5and 18.3% followed by cauliflower plants 13.9 and 14.9 %.While, canola plants recorded the last category and represented by 11.6and 13.9%,respectively .Moreover, there was a highly significant differences between the percentage of B.femorata parasitoids on different cruciferous plants during the two successive seasons .The cabbage plants harboured the highest average percentage of Pteromalus puparum during the three successive seasons 2011/12 and 2012/13 represented by 30.8% and 31.5% followed by cauliflower plants 24.4and 26.6% while, canola plants recorded the last category and represented by 19.6% and 14.7%,respectively .Moreover there were a highly significant differences between the percentage of P. puparum on different cruciferous plants during the two successive seasons. Cabbage plants harboured the highest average percentage of Phryxe vulgaris during three successive seasons 2011/12 and 2012/13 and represented by 8.9% and 8.1% followed by cauliflower plants 5.8and 6.8% while, canola plants recorded the last category and represented by 3.5% and 2.9 % , respectively.Moreover, there were a highly significant differences between the percentage of P. vulgaris on different cruciferous plants during the two successive seasons.
Journal of Plant Protection and Pathology
Mansoura University, Faculty of Agriculture
2090-3677
4
v.
8
no.
2013
693
699
https://jppp.journals.ekb.eg/article_87461_d33aba66ba6b97ce27c55fed2581a4a9.pdf
dx.doi.org/10.21608/jppp.2013.87461
HOST PLANT PREFERENCE OF THE CABBAGE BUTTERFLY Pieris rapae L ON DIFFERENT CRUCIFEROUS VEGETABLES , IN KAFR EL-SHEIKH REGION.
S.
Awadalla
Economic Entomology Dept. Fac. Agric. Mans. Univ.
author
Hala
EL-Serafi
Economic Entomology Dept. Fac. Agric. Mans. Univ.
author
Salwa
Abdel - Samad
Biological Control Dept. Sakha Agric. Res. Station Plant Protection Res. Inst. Agric. Res. Center.
author
Ekram
Abdou
Biological Control Dept. Sakha Agric. Res. Station Plant Protection Res. Inst. Agric. Res. Center.
author
text
article
2013
eng
The experiment was carried out at the experimental farm of the Plant Protection Dep. Sakha Agric. Res. Station, Kafr El-Sheikh, during two successive vegetable growing seasons, 2011/ 12 on Cabbage , Cauliflower and Canola plants. Cabbage plants harboured the highest average number of eggs during the two successive seasons 2011/12 and represented by59.2±3.8 and 56.6±3.5eggs/50 plants followed by cauliflower plants 56.9±4.6 and 43.8±2.0 eggs /50 plants while, canola plants recorded the last category and represented by 24.5±2.8 and 35.8±3.1 eggs /50 plants , respectively . Moreover , there was a highly significant difference between the number of egg-laying on different cruciferous plants during the two successive seasons.
Cabbage plants recorded the highest average number of larvae during the two successive seasons 2011 /12 and represented by 46.8±5.7 and 45.9±5.3larvae/50 plants followed by cauliflower plants 39.9±5.4 and 36.9±2.9 larvae/50 plants while, canola plants recorded the last category and represented by 17.9±2.5 and 20±2.9 larvae/50 plants ,respectively .Moreover, there were a highly significant differences between the number of larvae on different cruciferous plants during the two successive seasons. Cabbage plants recorded the highest average number of pupa during the two successive seasons 2011/12 and represented by 36.3±6.2 and 37.2±4.5 pupa/50 plants followed by cauliflower plants 32.9±5 and 31.2±4.8 pupa/50 plants while, canola plants recorded the last category and represented by 17.3±2.6and16.3±2.5pupa/50 plants respectively. Moreover, there was a highly significant difference between the number of pupa on different cruciferous plants during the two successive seasons..
Journal of Plant Protection and Pathology
Mansoura University, Faculty of Agriculture
2090-3677
4
v.
8
no.
2013
701
707
https://jppp.journals.ekb.eg/article_87464_80854be5a75badb202545885b8e50fc6.pdf
dx.doi.org/10.21608/jppp.2013.87464
PHYSIOLOGICAL RACES OF RICE BLAST PATHOGEN AND HOST RESISTANT GENES UNDER EGYPTIAN CONDITIONS
Y.
Shabana
Plant Pathol. Dept. Fac. of Agric., Mansoura Univ., Egypt.
author
S.
El-Wahsh
Rice Pathol. Dept., Plant Pathol. Res. Inst., Agric. Res. Center, Egypt.
author
A.
Abdelkhalik
Rice Dept., Field Crops Res. Inst., Agric. Res. Center, Egypt.
author
S.
Fayzalla
Plant Pathol. Dept. Fac. of Agric., Mansoura Univ., Egypt.
author
A.
Hassan
Rice Pathol. Dept., Plant Pathol. Res. Inst., Agric. Res. Center, Egypt.
author
text
article
2013
eng
Experiments were carried out at Rice Research and Training Center during 2009 to 2012 growing seasons. This study aimed at evaluation of some commercial Egyptian rice cultivars and some promising lines against blast disease, identification of effective rice blast resistant genes, and distribution of physiological races and common races of Pyricularia grisea. One hundred and thirty two of P. grisea isolates were collected from rice-cultivating governorates in Egypt, namely Kafr EL-Sheikh (36 isolates), Gharbia (48 isolates), Dakahlia (18 isolates), Sharkia (12 isolates), Damietta (6 isolates) and Beheira (12 isolates). IH race group was the most common race (47.69%), followed by IC (26.58%) and IF (12.15%) groups, While IG, ID and IE (6.06, 6.04 and 1.49%, respectively) were the minor race groups during this study period. The promising line GZ 9057-6-1-3-2 revealed the highest level of resistance against most isolates tested (98.48%) followed by Giza 178 and GZ 9523-2-1-1-1 (96.22% for each). On the other hand, the susceptible rice cultivars, Sakha 101 and Sakha104, were infected with the most tested isolates (25.76 and 61.36 % resistance, respectively).Pi-z-5 gene found in IRBLz5-CA and IRBLz5-CA (R) lines scored the highest effective gene of blast resistance (97.76 and 95.50%, respectively). This gene was followed by pita-2 gene, found in the monogenic line IRBLta2-Re (91.70%). On the other hand, Pia gene found in IRBLa-A and IRBLa-C lines was the lowest effective resistant gene with zero efficacy against the tested isolates. The highest percentage of race groups from the total identified isolates were obtained from Gharbia and Kafr El-Sheikh governorates (36.53 and 27.27%, respectively). On other hand, Damietta governorate had the lowest percentage of race groups (4.56% from the total identified races).
Journal of Plant Protection and Pathology
Mansoura University, Faculty of Agriculture
2090-3677
4
v.
8
no.
2013
709
720
https://jppp.journals.ekb.eg/article_87469_567deb89beecf3944fe8ff8b34faf7a0.pdf
dx.doi.org/10.21608/jppp.2013.87469
PRELIMINARY EVALUATION OF In vitro SECONDARY METABOLITES OF Sclerotium cepivorum, THE CAUSAL AGENT OF ONION WHITE ROT
Mohamed
El-Sheshtawi
Plant Pathology Department, Faculty of Agriculture, Mansoura University, El-Mansoura 35516, Egypt
author
Mona
Zaghloul
Pharmacognosy Department, Faculty of Pharmacy, Mansoura University, El-Mansoura 35516, Egypt
author
E.
Elsherbiny
Plant Pathology Department, Faculty of Agriculture, Mansoura University, El-Mansoura 35516, Egypt
author
Amany
Saad
Plant Pathology Department, Faculty of Agriculture, Mansoura University, El-Mansoura 35516, Egypt
author
text
article
2013
eng
Culture filtrates and organic solvent extracts of Sclerotium cepivorum liquid cultures were evaluated for their antifungal activities against the same fungus. Filtrates at 50% taken from 30 to 45-day-old cultures have reduced S. cepivorum growth by 51.9%. This treatment has also caused a reduction in the number of sclerotia by 98.6%. No sclerotial germination was observed on the media amended with the culture filtrates at all concentrations tested (10, 25 and 50%),.Among all organic solvent extracts, methanol extract was the strongest growth inhibitor against the fungal pathogen; it inhibited S. cepivorum growth by 82.2, 93.3, and 93.6% when used at concentrations of 400, 800, and 1200 ppm, respectively. At the same concentrations, ethyl acetate extract exhibited high inhibition to the fungal growth i.e., 85.56, 88.89, and 90.56%, respectively, while chloroform extract was the least effective in this regard causing 71.11% mycelial growth inhibition when used at concentrations of either 800 or 1200 ppm. All organic-solvent extracts completely suppressed the formation and germination of sclerotia at all concentrations. Further studies are needed to isolate different bioactive compounds from secondary metabolites of S. cepivorum.
Journal of Plant Protection and Pathology
Mansoura University, Faculty of Agriculture
2090-3677
4
v.
8
no.
2013
721
730
https://jppp.journals.ekb.eg/article_87473_1bcf8303b15cae786c40ebd2c4477e37.pdf
dx.doi.org/10.21608/jppp.2013.87473
ROLE OF MINERAL NUTRITION ON CONTROLLING Meloidogyne incognita INFECTING OKRA PLANT UNDER GREENHOUSE CONDITIONS
S.
Gad
Nematology Res. Unit, Agric. Zool. Dept, Fac. of Agric., Mansoura Univ. El-Mansoura, DK., Egypt.
author
text
article
2013
eng
The impact of three mineral fertilizers and magnetic iron at three levels (5, 10, 15 g/plant) on Meloidogyne incognita infecting okra plant in comparsion with furadan were studied under greenhouse conditions (29 ± 3°C). Results indicated that all tested materials significantly ameliorated okra plant growth criteria and reduced tested nematode parameters as well. Zinc sulphate, magnesium sulphate and magnetic iron at the level of 15 g/ plant achieved better results than did other levels with values of 20.1, 44.3 and 46.6%; 21.8, 50.9 and 32.6%; and 39.0, 34.2 and 32.1% for plant length , total plant fresh weight and shoot dry weight, respectively, followed by that of 10g/ plant, and then the level of 5 g/ plant - except that of ferrous sulphate. A positive correlation between reduction percentage of nematode population in soil and increasing tested materials levels was evident. The level of 15g/ plant ranked first in diminishing number of nematode in soil with values of 83.9, 80.6, 82.9 and 79.4% respectively for zinc sulphate, magnesium sulphate, ferrous sulphate and magnetic iron, respectively. However, a negative correlation between levels of application of such materials and reduction percentages of galls and eggmasses was also observed except that of magnetic iron. As the level of such materials raised, reduction of galls and eggmasses number decreased except that of magnetic iron. However, the least values of these nematode criteria were recorded by zinc sulphate, magnesium sulphate, and ferrous sulphate treatments at the rate of 15g/plant. Furadan (5g/plant) gave considerable percentage increase values for plant growth parameters and ranked first in diminishing nematode criteria.
Journal of Plant Protection and Pathology
Mansoura University, Faculty of Agriculture
2090-3677
4
v.
8
no.
2013
731
738
https://jppp.journals.ekb.eg/article_87476_79df973c4e840603d1021437478eb42b.pdf
dx.doi.org/10.21608/jppp.2013.87476
EVALUATION OF DIFFERENT SAMPLING METHODS TO ESTIMATE THE POPULATION DENSITY OF BLISTER BEETLE, MELOE PROSCARABAEUS L. (COLEOPTERA: MELOIDAE) IN NEW-VALLEY GOVERNORATE, EGYPT.
M.
Ali
Plant Protection dept., Fac. Agric., Al-Azhar University, Nasr city, Cairo, Egypt.
author
I.
Ibrahim
Plant Protection dept., Fac. Agric., Al-Azhar University, Nasr city, Cairo, Egypt.
author
A.
Abdel-Rahman
Plant protection dept., Desert Research Center, Mataria, Cairo, Egypt.
author
O.
Elsebai
Plant Protection dept., Fac. Agric., Al-Azhar University, Nasr city, Cairo, Egypt.
author
W.
El-Sheikh
Plant protection dept., Desert Research Center, Mataria, Cairo, Egypt.
author
text
article
2013
eng
The blister beetle, Meloe proscarabaeus L. (Coleoptera: Meloidae) was recorded for the first time as a serious insect pest attacking faba bean (Vicia faba L.), peas, alfalfa, onion and wild weeds in El-Farafra Oasis, (Western Desert), Egypt. Beetles feed on foliage and flowers of injured plants causing defoliation and crop loss. Adults occurred in the fields from early November until late March. Beetles secrete a cantharidin fluid, a potent blistering agent which burns plant leaves and flowers and at the same time, it is strong poison to all livestock and domestic animals feeding on contaminated plants.
The present work was conducted to evaluate different sampling methods to estimate the population of M. proscarabaeus under field conditions of El–Farafra Oasis. Three methods were tested during two seasons (2009-20010) and (2010-2011). Results revealed that the most effective method was direct count technique followed by pitfall traps and at last was wooden frames. Direction wise the north direction was significantly efficient over other directions.
Journal of Plant Protection and Pathology
Mansoura University, Faculty of Agriculture
2090-3677
4
v.
8
no.
2013
741
753
https://jppp.journals.ekb.eg/article_87478_4f45dcc2bd08aa73889dc4d717490c7d.pdf
dx.doi.org/10.21608/jppp.2013.87478
RELATION BETWEEN LEAF AGE AND RESISTANCE TO CERCOSPORA LEAF SPOT DISEASE IN SUGAR BEET.
Samia
EL-Fahhar
Plant Pathology Dept. of Sugar Crops, Sugar Crops Res, Inst, ARC, Egypt.
author
Samira
EL-Okkeya
Botany Dept., Fac. of Agriculture, Kafr EL-Sheikh, Univ, Egypt.
author
B.
Abou-EL-Magd
Physiology and Chem. Dept. of Sugar Crops, Sugar Crops Res, Inst, ARC, Egypt.
author
text
article
2013
eng
This investigation was conducted during 2011/2012 season at Sakha Agricultural Research Station farm and screen-house belongs to Sugar Crops Institute. This investigation was carried out on Kawamera sugar beet cultivar to answer the question of why young Leaves of sugar beet possess a high level of resistance to Cercospora leaf spot? Under artificial inoculation by Cercospora beticola spores (50 × 103 spores / ml), disease severity, chlorophyll content, losses in both yield and sugar were evaluated in randomized complete block design experiment. Different histological and biochemical factors were measured i.e., size of stomatal apparatus, mineral contents in different leaves starting from heart leaves up to outer leaves of the plant.
Results obtained revealed that percent losses of inoculated leaves was 64.15 % in chlorophyll content, 52.05% and 41.74% in root and sugar yields were (respectively. Dimensions of stomatal apertures, diameter and stomata intensity showed that the young leaves were narrow and it has less number of stomata ranged from in inner leaves 115 stomata / mm2 up to 331 stomata / mm2 in outer leaves. Relative water content (RWC) was determined for sugar beet leaves, data obtained showed that young inner leaves contain less relative water content than mature outer leaves. Moreover, peroxidase activity was higher in the younger leaves than the mature one. Element analysis showed that N, P, Fe, Mn and Cu contents increased gradually from the inner first leaf and reduced in the outer fifth leaf, while the opposite was in potassium and zinc contents. Total phenol compounds were increased after inoculation; while the free and conjugated phenol compounds were higher in the young leaves than the oldest ones. This study clarified the role of leaf age and position in relation to resistance to Cercospora leaf spot disease.
Journal of Plant Protection and Pathology
Mansoura University, Faculty of Agriculture
2090-3677
4
v.
8
no.
2013
755
765
https://jppp.journals.ekb.eg/article_87479_3519c06978bd994de1dd7d317bbd1c55.pdf
dx.doi.org/10.21608/jppp.2013.87479