eng
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
2015-08-01
6
8
1143
1153
10.21608/jppp.2015.74715
74715
Original Article
EFFECT OF NUTRITION AND PHYSICAL FACTORS ON MYCELIAL GROWTH AND SPORE PRODUCTION OF Curvularia prasadii, A MYCOHERBICIDE AGENT FOR BARNYARD GRASS (Echinochloa crus-galli) IN RICE
Y. Shabana
yassershabana2@yahoo.com
1
A. AbouTabl
2
M. Sadek
3
Plant Pathology Department, Faculty of Agriculture, Mansoura University, El-Mansoura, Egypt
Plant Pathology Department, Faculty of Agriculture, Mansoura University, El-Mansoura, Egypt
Plant Pathology Department, Faculty of Agriculture, Mansoura University, El-Mansoura, Egypt
Echinochloa crus-galli is an important weed in rice paddies. The optimum cultural and physical conditions for production of Curvularia prasadii (CP01, CP02, and CP03 isolates), a biocontrol agent for the rice weed, E. crus-galli, were determined. Culture media, light regime, pH, incubation temperature, and aeration were tested for their effect on the mycelial growth and spore production of the fungal biocontrol agent. Showed to be the best medium for the linear growth of the three isolates of the fungus was malt extract agar (MEA). Maximum yield of spores of the three isolates was obtained on potato dextrose agar (PDA). Contentious darkness was the most suitable light regime for the mycelial growth and sporulation of the CP01 and CP02 isolates, while contentious or diurnal light were best for CP03 growth. However, all degrees light regime were sutable for the spore production of the isolate CP03, with no significant differences among them. The pH levels of 6, 7, and 8 induced the highest mycelial growth of the three isolates. However, the latter two pH levels (7 & 8) were best for the sporulation of all three isolate. The best mycelial growth was obtained at incubation temperature of 30°C (for CP01 and CP03) and 35°C (for CP02). For spore production, the optimum level of temperature for isolates CP01 and CP02 was 35°C, while it was 30°C for CP03. Aeration level (as negatively correlated with the number of Parafilm® layers around the culture plate edge) was also tested. There was no effect of the number of Parafilm® layers (aeration level) on the CP02 mycelial growth. However, two layers of sealing culture plates with Parafilm® provided optimum level of aeration for best mycelial growth for isolates CP02 and CP03 and highest spore production for all three isolates.
https://jppp.journals.ekb.eg/article_74715_5922a230bfed40bb5507a667f6abe832.pdf
biological control
mycoherbicide
Curvularia prasadii
cultural conditions
physical factors
rice
Oryza sativa
Echinochloa crus-galli
eng
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
2015-08-01
6
8
1155
1162
10.21608/jppp.2015.74717
74717
Original Article
EFFICIENCY OF SILICA NANOPARTICLES COMPARED WITH CERTAIN BIO-INSECTICIDES, MINERAL OIL AND INSECTICIDE ON COTTON BOLLWORMS UNDER FIELD CONDITIONS AT EL-RIAD REGION, KAFR EL-SHEIKH GOVERNORATE
Asmaa El-Ghobary
1
M. El-Samahy.
2
Plant Protect. Res. Inst. (PPRI), Agric. Res. Station (ARS), Sakha, Kafr El-Sheikh, Egypt
Plant Protect. Res. Inst. (PPRI), Agric. Res. Station (ARS), Sakha, Kafr El-Sheikh, Egypt
This experiment was carried out at El-Riad region, Kafr El-Sheikh Governorate to estimate the efficiency of silica nanoparticles compare with bio-insecticides, mineral oil and the conventional insecticide (Dursban H) on reducing the population of the cotton bollworms; pink bollworm, Pectinophora gossypiella (Saunders) and spiny bollworm, Earias insulana (Boisd.) in cotton fields during 2013 and 2014 seasons. Data showed that Dursban H in two sprays was the highest effective. Silica nanoparticles came in the second order with high concentration (200 ppm) followed by low concentration of silica nanoparticles (100 ppm) during the two successive cotton seasons. However, Biovar (Beauveria bassiana) was the least effective. The efficiencies of the tested compounds were significantly differences according to the population reduction of the two cotton bollworms.
https://jppp.journals.ekb.eg/article_74717_69ef8725b079bd5df831115a8b72a741.pdf
cotton bollworms
Silica nanoparticles
control
eng
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
2015-08-01
6
8
1163
1173
10.21608/jppp.2015.74716
74716
Original Article
SURVEY OF LEAFHOPPERS ON MEDICINAL AND AROMATIC PLANTS IN EGYPT (HEMIPTERA: AUCHENORRHYNCHA: CICADELLIDAE)
Heba Ibrahim
1
Azza Emam
2
A. Helmy
3
M. Ahmed
maibrahim@ucdavis.edu
4
Plant Protection Research, Agric. Res. Center, Giza, Egypt.
Dept. of Plant Protection, Fac. Of Agric. Ain Shams Univ., Shoubra El- Kheima, Cairo, Egypt.
Dept. of Plant Protection, Fac. Of Agric. Ain Shams Univ., Shoubra El- Kheima, Cairo, Egypt.
Plant Protection Research, Agric. Res. Center, Giza, Egypt.
Leafhoppers are common and abundant insects in worldwide. Numerous leafhopper species are considered serious plant pests, and those as vector plant diseases inflict untold economic losses in agricultural crops. the present work aims to surveyleafhoppers species infesting medicinal and aromatic plants in Egypt. Soleafhopper adults and nymphs were collected from these plants at different localities in Egypt using both sweeping net and aspirator throughout 2011 to 2015. Fifteen leafhopper species belonging into four subfamilies and fourteen genera were surveyed. Synonyms, diagnostic morphological characters and host plants were provided.
https://jppp.journals.ekb.eg/article_74716_97a274b12a86faaa405f01e5e1f49d31.pdf
Cicadellidae
leafhoppers
Medicinal
aromatic plants
Hemiptera
Auchenorrhyncha
Egypt