EFFECT OF INTERCROPPING AND NEIGHBOR SYSTEMS OF COTTON PLANTS AND OTHER SUMMER CROPS ON THE OCCURRANCE OF SOME COTTON PESTS AND ASSOCIATED NATURAL ENEMIES
Mohamed
Ibraheem
Abd Allah and H.M.H. Al-Shannaf
Plant Protection Institute, Dokki, Giza, Egypt.
author
Atef
Abd Allah
Plant Protection Institute, Dokki, Giza, Egypt.
author
Hatem
Al-Shannaf
Plant Protection Institute, Dokki, Giza, Egypt.
author
text
article
2006
eng
This study was conducted to evaluate the effect of intercropping and neighbor cotton plants with other summer plants on the occurrence levels of some cotton pests in Graia village at Zagazig, Sharkia Governorate during 2003 and 2004 seasons. The results show that Intercropping cotton with tomato or onion increased Aphis gossypii ( Glover) average numbers significantly on cotton plants. While with cucumber and pepper the average numbers were decreased in both 2003 and 2004 seasons. The average numbers of Tetranychus spp. increased in intercropping system of cotton with tomato or cucumber, while the contrast results was found with onion or pepper intercropping system in comparing with the solid cotton plants during 2003 and 2004 seasons. The all intercropping systems increased the population density of Thrips tabaci (Lind.) on cotton plants in comparable with solid plants in both of seasons. The influences of intercropping systems on Bemisia tabaci (Genn.) and Empoasca sp. were differed from season to another and from system to another. With respect to the occurrence of associated natural enemies under intercropping systems, the highest population density of predators, Scymnus spp. and Orius spp. were recorded on cotton plants intercropped with tomato in both seasons. While, the highest number of predators ( Syrphus sp.,) Paederus alfierii, true spider mites, predator mite (Phytoseiulus sp.) and parasitoids, Encarsia sp. and Ertmocerus sp. were recorded on solid cotton plants compared to the intercropping systems in the two study seasons. The highest numbers of Chrysoperla carnea were detected on cotton plants intercropped with cucumber, whereas, the highest average number of Coccinella spp. recorded on cotton plants intercropped with onion in the first season and cotton plants intercropped with tomato in the second one. As neighbor effect, the numbers of Empoasca sp. and T.tabaci was increased on cotton plants, while the numbers of A. gossypii, B. tabaci and Tetranychus spp. were decreased in both of seasons 2003 and 2004. The neighbor of cotton plants by tomato, cucumber, onion or pepper was increased the numbers of predators (Chrysoperla carnea, Orius spp., Paederus alfierii) and parasitoid, Encarsia sp. on cotton plants; while the numbers of Coccinella spp. Scymnus spp., Syrphus spp., true spider mites and Ertmocerns sp. were decreased in both seasons.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
185
198
https://jpd.journals.ekb.eg/article_45312_b80ce4c6232ef7e6a8f3dd4802cb0161.pdf
dx.doi.org/10.21608/jpd.2006.45312
ECONOMIC AND BIOLOGICAL REVENUE OF MAIZE EXPERIMENTS (In Arabic)
Ahmed
Abd El–Hallim
A.A. ; Ezzat Zidan and Faten M. El Hady
Central Lab. For Design and Statistical Research, Agricultural Research Center, Giza Egypt.
author
Ezzat
Zidan
Faten M. El Hady
Central Lab. For Design and Statistical Research, Agricultural Research Center, Giza, Egypt.
author
Faten
Mohamed El Hady
author
text
article
2006
eng
Two field experiments were carried out at Agricultural Research Station of Gimmaza in (2002-2003,2003-2004) seasons to study the economic and biological production efficiency for new ten hybrids white and yellow maize. Different rates of nitrogen fertilizer were used to evaluate the biologic revenue with economic revenue The study showed that there was an increasing in total production although the cultivated area was decreased through the years (2002-2003,2003-2004), this indicates the high production of new varieties of maize. The gap of maize production was about 5.1 million ardab in year (2004). The study showed that the importance of the height achievement net revenue of verities and hybrid maize. The net revenue average of single hybrid-10 reached about 1498 LE / feddan, but biological revenue was about 30 ardab/ feddan, where the economic revenue of thirdly hybrid-326 reached about 1515 LE/ feddan and the biological revenue reached 31 ardab / feddan. The thirdly hybrids 326,327,325 should be cultivated to achieve higher biological revenue, while thirdly hybrid-326 and single hybrid-10 achieved higher economic revenue by applying 120 singular/feddan of the nitrogen fertilizer.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
199
213
https://jpd.journals.ekb.eg/article_45313_63637989bcbe938defb63377b7ce70e7.pdf
dx.doi.org/10.21608/jpd.2006.45313
STATISTICAL ASSESSMENT OF POTATOES CROP LOSSES IN EGYPT (In Arabic)
Ezzat
Zidan
Central Lab. For Design and Statistical Research, Agricultural Research Center,Giza, Egypt.
author
Faten
Mohamed EL–Hady
.
Central Lab. For Design and Statistical Research, Agricultural Research Center,Giza, Egypt.
author
text
article
2006
eng
Potatoes crop is considered one of the most important agricultural crops for domestic food and export in the world and Egypt. The cultivated area of potatoes was about 192 thousand feddans in the years (2000-2004). The production of potatoes reached about 2.02 million tons, and total exported amount reached about 341 thousand tons, its total value reached about 300 million L.E.. The annual potatoes losses increased due to wide geographical acreage size of cultivated areas in addition to difference in climatic, environmental, biological factors and decrease technological and technical experience. The potatoes losses mainly occur in production, harvest, transportation, storing and export stages. The total losses reached about 180 thousands ton in the year of 2004 where it represents about 8.2% of total production in the same year. The study end by some recommendation to reduce potatoes crop losses by planting potatoes variety of higher productivity as Silany, Cara and Biren. In order to make coverage of potatoes losses in addition to interesting with some cultivation treatments as fertilization, irrigation, diseases control and blights for increasing the value added and improvement of the produced crop and increase the Egyptian exportation of potatoes. Key words:
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
215
227
https://jpd.journals.ekb.eg/article_45314_d9e31d51ed90f2d0352d7eb57056abee.pdf
dx.doi.org/10.21608/jpd.2006.45314
EFFECT OF POLLEN SUBSTITUTES FEEDING ON THE ACTIVITY OF HONEYBEE COLONIES
I.
Shehata
Plant Protection Department, Faculty of Agriculture. Al-Azhar Univ., Egypt.
author
E
Nafea
Agriculture Research Centre, Giza, Egypt.
author
text
article
2006
eng
The effect of pollen substitutes feeding on the activity of honeybee was investigated using F1 generation of El-Wady El-Gadid and F1 Italian honeybee. Some food materials of high protein, sugar, vitamins and minerals content available locally were used to increase colony population, pollen collection as well as honey production. The pollen substitutes were: A (agwa, sugar, soybean, melon shell, mandarin shell), B (yeast, agwa, sugar, maize, melon shell, banana shell) and C ( yeast, agwa, sugar, Egyptian bean, melon shell, orange shell). The results showed that there were no significant differences between food consumption, pollen collection, area of brood rearing and honey production in the two tested strains. The data showed that there was a significant differences between all treatment; A (99.1 % ), B ( 98.5 %) and C (91.03 %) of El-Wady El-Gadid colonies, when the food preference was studied, whereas there was no significant difference between all treatment in case of Italian colonies. There was a significant difference in honey production, sealed brood area and pollen collection among the tested pollen substitutes and control hives treatment of El-Wady El-Gadid colonies, while there were no significant differences between them in honey production and brood rearing area of F1 Italian colonies. There was no significant difference between the two hybrids and pollen substitutes in all activates with the exception of diet A in the honey production and pollen collection. The data also indicated that, there was a significant differences between the worker brood area of all diets in case of El-Wady El-Gadid colonies, where the pollen substitute (B) was the first followed by (A) and (C). On the other hand, there were no significant differences between all diets and control hives treatment in Italian colonies.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
239
248
https://jpd.journals.ekb.eg/article_45315_84f0e9ceae862580c00f8d513504c776.pdf
dx.doi.org/10.21608/jpd.2006.45315
INFLUENCE OF DIETARY ENERGY AND PROTEIN SOURCES ON DIGESTIBILITY, RUMEN PARAMETERS AND WEIGHT GAIN OF MALE GOATS
Sabry
Shehata
Animal Production Dept., Faculty of Agriculture, Zagazig University, Egypt.
author
Mahmoud
El-Gamal
Nutrition and Clinical Nutrition Dept., Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
author
text
article
2006
eng
This work was carried out to study the effect of dietary energy and protein sources on digestibility, nutritive values, rumen parameters and weight gain. Twelve male goats, average body weight 20 kg were used in this experiment, which divided into four equal groups, fed on concentrate feed mixtures (CFM) and wheat straw ad libitum . The concentrate feed mixtures of tested rations were: Ration 1 : 70% corn + 29% cotton seed meal + 1% additives (CFM1). Ration 2 :23% corn + 29% cotton seed + 47% SBP + 1% additives (CFM2). Ration 3 :70% corn + 29% broken horse bean + 1% additives (CFM3). Ration 4: 23% corn + 29% broken horse bean + 47% SBP + 1% additives (CFM4). The CFM was offered the give goat requirements while wheat straw offered ad libitum. The results of two energy sources showed that sugar beet pulp (SBP) has crude fiber (CF), crude protein (CP) and ash contents higher than corn grains content. While nitrogen free extract (NFE) and ether extract (EE) were less than corn grains. Cotton seed meal (CSM) has higher CF, EE and ash content and lower CP and NFE in comparison with broken horse bean (HB). Using of SBP instead of corn (CFM2) decreased (P<0.05) the digestibility of CP, EE and NFE while the total digestible nutrients (TDN) and digestible crude protein (DCP)% did not significantly affected. Broken horse bean (HB) caused significantly (P<0.05) increase in DM, OM, CF, NFE digestibility and TDN and DCP% in comparison with (CSM). The interaction between energy and protein sources had significant (P<0.05) effect on all nutrient digestibilities and nutritive values (%). The daily body weight gain did not affect by energy sources. It was high (P<0.05) for goats fed HB in comparison with which fed CSM. Generally, most results indicate that the best rations were contained CFM4 followed by CFM3 followed by CFM1 then CFM2. Results of rumen parameters showed that, the pH value, ammonia nitrogen and total volatile fatty acids (TVFA's) concentrations not significantly (P<0.05) affected by energy source. On the other hand, the ammonia nitrogen and TVFA's significantly (P<0.05) affected by protein sources. The interaction between energy and protein sources was significant. The lowest pH and highest TVFA's were found in rumen liquor of goats fed CFM1 in comparison with fed others (CFM)s. The CSM increased (P<0.05) ammonia nitrogen concentration in comparison with HB. Results of the study indicate that , replacing 67% of corn of CFM1 by SBP had deleterious effect on the digestibility, nutritive values and weight gain of goat when CSM was the protein source (CFM2). On the other hand, replacing of corn by SBP with using HB as protein source (CFM4) give the best results. All results indicate that HB was better than CSM meal.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
267
277
https://jpd.journals.ekb.eg/article_45316_b29aa1c2c53d4e876387f1eccb1db093.pdf
dx.doi.org/10.21608/jpd.2006.45316
EFFECT OF SOWING METHOD AND CUTTING SYSTEM ON FORAGE AND SEED PRODUCTION OF SOME EGYPTIAN CLOVER CULTIVARS (TRIFOLUM ALEXANDRINUM, L.).
El Sayed
Gaballah
Plant Production Department (Agronomy), Institute of Efficient Productivity, Zagazig University, Zagazig, Egypt.
author
text
article
2006
eng
Two field experiments were conducted at the Research Farm of the Faculty of Agriculture, Suez Canal University in Al-Ismailia, during 2003/2004 and 2004/2005 winter seasons. The present investigation aimed to study the effect of two sowing methods (in rows and broadcasting) and three cutting systems ( system (A): the three growth periods were 60, 35 and 30 days before the 1st, 2nd and 3rd cuts respectively. While, these periods were prolonged by 5 and 10 days in the second (B) and the third (C) systems, respectively. on forage and seed production of three Egyptian clover multicuts Meskawi cultivars namely Helaly, Sakha 4 and Giza 15 under sandy soil conditions. A split-split plot design with three replicates was used in both seasons. The results revealed that broadcasting method gave higher values in plant height, fresh, dry yields and seed yield and its attributes than sowing in rows one. Whereas, forage quality (CP, DCP, TDN and SV percentages) were not significantly affected by sowing methods. At the three cuts, prolonging the cutting intervals by 5 and 10 days in B and C systems caused a continuous and significant increase in each of plant height, fresh, dry forage and seed yields/fad.. The number of heads/plant was not significantly affected in both seasons. While, TDN and SV percentages were gradually increased by prolonging the cutting intervals but the CP and DCP percentages took an opposite trend in the first two cuts. Helaly cv. recorded the highest values of plant height, fresh, dry forage yields and seed yield and its components in the two seasons and their combined while, Giza 15 and Sakha 4 cvs, recorded the highest values of CP% and DCP% in the 2nd and 3rd cuts of the combined data followed by Helaly cv. in respective order. The results did not show significant interaction effects between sowing methods and cutting systems in all studied traits except, pant height. There was a positive and significant correlation between each of plant height, total forage yield, TDN% and SV% on one hand and total dry forage yield per fad. on the other. However, the correlation between total dry forage yield and both CP% and DCP% negative and significant. Conclusively ,Results indicated that Helaly Egyptian clover cv. when broadcasted and cut as in C system can produced the highest forage and seed yields under sandy soil conditions of Ismailia Governorate..
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
279
295
https://jpd.journals.ekb.eg/article_45319_b6e905529af1990e70d8a9ea3d71e91a.pdf
dx.doi.org/10.21608/jpd.2006.45319
PHENOLIC COMPOUNDS, SWEETNESS AND AMINO ACIDS CONTENT OF ONION CULTIVARS DISTRIBUTED IN EGYPTIAN LOCAL MARKETS AND THEIR RELATIONSHIP WITH ANTIOXIDANT ACTIVITIES
Yousif
Elhassaneen
Department of Nutrition and Food Science, Faculty of Home Economics, Minufiya University, Shebin El-Kom, Egypt
author
text
article
2006
eng
Phenolic compounds, sweetness and amino acids content of two onion (Alliumcepa L.) cultivars, white (Giza-6) and red (Giza-20) onions and their relationship with antioxidant activities were assessed. Data analysis showed that the white onion variety has higher values for protein, ash, fiber, total carbohydrates and total energy while red once has the lowest dry matter content (12.61%). Regarding mineral and vitamins levels, the white onion variety represents higher levels of K, Ca, Mg, P, Zn, Cu and Mn while Fe, S, Se and vitamin C were higher in red variety. A white variety shows higher value of total amino acids (1460 mg/100g FW) than red once [1345 mg/100g FW) and the opposite was observed for sulphur-containing amino acid (cysteic, S-carboxymethyl cystein (S-CM cystein), cystine and methionine]. The total single sugars detected in red onion (4.78 g/100g FW) are superior to in white (3.91 g/100g FW). Glucose and fructose levels are higher in the red onion than the white once and the opposite with sucrose. Concerning pungency, white variety can be classified as very sweet (6.24 µmol pyruvic acid/g FW) andred as sweet (8.37 µmol pyruvic acid/g FW). A negative correlation in sucrose and glucose and a positive correlation in fructose, sulphur, vitamin C, sulphur-containing amino acids and phenolics content with pungency werealso observed. The phenolic acids, flavonols, anthocyanins and total phenolics content in red variety(81.59, 70.38, 7.56 and 187.17 mg/100g FW, respectively) were higher than for white once (72.47, 32.49, 4.90 and 131.65 mg/100g FW, respectively). Consequently, antioxidant activity was higher for the red variety. Statistical analysis indicates that total phenolic compounds beside other factors including Se and sulphur-containing amino acid contents play the major role in the antioxidant activity of onion bulbs. Conclusively, the present data indicates that white onion variety shows higher nutritional value while the potential healthbenefits related to the presence of antioxidant compounds and other factors were higher in onion red variety.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
297
315
https://jpd.journals.ekb.eg/article_45320_129b41922b4244392e383bc62e15c91a.pdf
dx.doi.org/10.21608/jpd.2006.45320
ARMERS KNOWLEDGE OF THE HARMS OF INSECTICIDES AND THEIR SUBSTITUTES USAGE IN CONTROL VEGETABLES PESTS IN SOME VILLAGES IN SKARKIA GOVERNORATE
mohamed
El-Sayed
Agricultural Extension & Rural Development Research Institute, Agricultural Research Centre, Giza, Egypt
author
Mohamed
Farag
Agricultural Extension & Rural Development Research Institute, Agricultural Research Centre, Giza, Egypt
author
text
article
2006
eng
ABSTRACT: The main objectives of this study were to: Determine the knowledge level of the respondent farmers with the harms of using insecticides and determine their knowledge level with substitutes of these insecticides in control vegetables pests. Determine the relation between the knowledge degree of the respondent farmers with insecticides harms and some independent studied variables, and also determine the relation between the respondent farmers knowledge degree with substitutes theses insecticides and the studied independent variables. Identify the problems of substitutes insecticides usage in control vegetables pests from the view of the respondent farmers. A random sample of 168 respondents from Skarkia governorate, the data were collected by personal interviews using protested questionnaire during March 2006. Simple correlation coefficient, multiple correlation and regression analyses (Step-Wise) and means, standard Deviation, coefficient of variance and Range, were used to analyze date statistically, in addition to frequencies, percentages and tables. The results of this study revealed that: 1-About 48.81% of respondent farmers their knowledge level of insecticides harms was high, while about 18.45% from them was low. 2-About 64.88% from respondent farmers their knowledge level of substitutes of the insecticides was low while 10.71% from them was high. 3-From multiple correlation and Regression Analysis, three independent variables affected significantly the knowledge degree of the respondent farmers with the harms of using insecticides (33.8%) which were: mass media exposure degree, leadership behaviour degree, the size of agricultural. 4-From multiple correlation and Regression Analysis, three independent variables affected significantly the knowledge degree of the respondent farmers with substitutes of these insecticides (38.7%), the participation in the extension activities degree, the number of agricultural information sources, and mass media exposure degree.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
317
336
https://jpd.journals.ekb.eg/article_45321_039797000a7832f4572ba8de0d09b0df.pdf
dx.doi.org/10.21608/jpd.2006.45321
EFFECT OF SEEDING RATE AND NITROGEN FERTILIZATION ON THE YIELD OF FLAX
Abd El Rahman
Omar
Agronomy Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt.
author
Salwa
Ash- Shormillesy
Agronomy Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt.
author
text
article
2006
eng
This field study was performed at the Agricultural Research Farm (Ghazala location), Faculty of Agriculture, Zagazig University., Egypt during 2002/2003 and 2003/2004 seasons to evaluate the effect of seeding rate (expressed herein as seed number, being 800, 1200 and 1600 seeds/m2) and N fertilization levels (20, 40 and 60 kgN/fad) on the yield and some certain characters of the two flax genotypes (local cultivar Giza 7 and Imported genotype Elise). In each trial, split-split plot design of three replicates was employed, with 2 genotypes as main plots, the three seeding rates as sub-plots and the three N levels as sub-sub plots. The experimental unit was 6 m2 with dimensions of 2x3 m. The results showed significant cultivar behaviour, since Giza 7 cultivar was markedly distinguished on its similar Elise one in each of : stem diameter, number of basal and apical branches / plant, straw yield/fad, capsule and seed numbers/plant, seed index, seed yield/fad, seed oil percentage and oil yield/fad. On the other hand, Elise genotype was significantly superior as for : plant height, technical stem length, fibre% and fibre yield/fad. Such trend was greatly valid in both seasons and over them. The three numbers of seeds/m2 gave considerable response in all flax traits studied, since planting 800 seeds/m2 gave greater mean values respecting : stem diameter, number of basal and apical branches/plant, capsule and seed numbers / plant, seed index and seed oil content. Moreover, planting 1600 seeds / m2 possessed greater excess in each of : plant height, technical stem length, fibre% and at last the final yields/fad of straw, fibre, seed and oil when compared with both 800 and 1200 seeding rates. This phenomenon was completely true in both trials and across them as well. Nitrogen fertilization levels exerted noticeable variations in all tested flax traits, since the 20 kg N dose was most effective in raising both fibre% and seed oil content. Likewise, the 60 kg N level attained the greatest mean records regarding plant height, technical stem length, stem diameter, number of basal and apical branches/plant, straw and fibre yields/fad, capsule and seed numbers / plant, seed index and both seed and oil yields/unit area. Such N levels trend was fairly manifested in both seasons and their pooled data as well. Planting 1600 seeds/m2 interacted meaningly with 60 kg N/fad to produce pronounced increments as for : plant height, fibre% and fibre yield/fad (respecting Elise genotype), number of basal branches/plant as well as straw, seed and oil yields/fad (in case of Giza 7 cultivar). In other score, the final yields/fad from straw, fibre, seed and oil were markedly maximized by considering the 1600 seeding rate along with 60 kg N level/fad under the circumstances of this investigation.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
337
350
https://jpd.journals.ekb.eg/article_45322_0d0bd94694e489f8de21aa6e3496dbc0.pdf
dx.doi.org/10.21608/jpd.2006.45322
GROWTH PERFORMANCE, DIGESTIBILITY, CARCASS TRAITS AND SOME BLOOD CONSTITUENTS OF JAPANESE QUAILS AS AFFECTED BY SUPPLEMENT OF CHROMIUM IN GROWING RATIONS
Waheed
Ezzat
Poult. Breeding Dep., Animal Production Research Institute, Dokki, Giza, Egypt.
author
Ahmed
El-Koteat
Poult. Breeding Dep., Animal Production Research Institute, Dokki, Giza, Egypt.
author
Mohamed
Shoeib
Poultry Nutrition Dep., Animal Production Res. Institute, Dokki, Giza, Egypt.
author
text
article
2006
eng
The present study aimed to the effects of chromium (Cr) supplementation with different levels on growth performance, digestibility nutrients, carcass characteristics, some blood constituentsand economic efficiencyof the growing Japanese quail. A total number of 450 one-day-old Japanese quail's chicks was used divided randomly into five experimental groups. Each group was distributed by 3 replicates pens containing (30 birds in each) until 6 weeks of age. The 1st group fed the basal experimental diet without supplementation (as control), while the other groups were fed on diets supplemented with 200, 400, 800, and1200 µg chromium (Cr)/kg ration as chromium picolinate (Cr pic.), respectively. The results showed that the addition of chromium in the diets of growing Japanese quail resulted in an improvement (P<0.05) in body weight, and weight gain of group which received 1200 µg Cr/kg diet as compared to control one at the first three and six weeks of age. Moreover, at the same level addition of chromium in quail diets significantly (P≤0.05) improved the feed conversion, protein efficiency ratio and efficiency of energy utilization when compared with those fed unsupplemental diet, during the experimental periods (0-3 and 0-6 weeks of age). However, the addition up to 800 µg /kg of Cr in the diets improved significantly (P<0.05) the digestibility of organic matter and nitrogen free extract, while crude protein, crude fibre and ether extract digestibility were insignificantly affected. The results, also demonstrated that the abdominal fat decreased as the levels of chromium increased while, carcass percentage was increased. Serum total cholesterol,glucosewere significantly (P<0.05) decreased by Cr supplementation. On the other hand total lipid, total tri-glycerides and high density lipoprotein cholesterol (HDL %) showed the inverse trend. The highest value of economic efficiency (EE) was obtained for quails fed on diets supplemented by Cr up to 800 µg /kg. The results from this study demonstrate that a supplementation up to 800 µg /kg of Cr in the ration improved the growth performance, digestibility, carcass characteristics and blood constituentsof the growing Japanese quail.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
351
366
https://jpd.journals.ekb.eg/article_45323_40945eaf304fec3bafe245168c4fd05a.pdf
dx.doi.org/10.21608/jpd.2006.45323
SURVEY AND SEASONAL ABUNDANCE OF LEAFHOPPERS INFESTING SOME SOLANACEOUS AND CRUCIFEROUS CROPS.
Reda
Omar
Plant Prot. Dept., Faculty Agric., Benha Univ., Benha, Egypt.
author
Aly
Hegab
Plant Prot. Dept., Faculty Agric., Zagazig Univ., Zagazig, Egypt.
author
Abd El rahman
El-Bery
Plant Prot. Dept., Faculty Agric., Benha Univ., Benha, Egypt.
author
Mostafa
Hashem
Plant Protection Institute, Dokii, Giza , Egypt.
author
text
article
2006
eng
A survey and seasonal abundance of leafhopper species on certain selanaceous and cruciferous vegetable plants in Sharkia, Egypt were studied by using sweeping net and sticky board traps throughout 2002/2003 and 2003/2004 seasons. The obtained results showed that the dominant leafhopper species on pepper plants were Empoasca decipiens (Paoli), E. decedens (Paoli), Cicadulina chinai (Ghauri) and Circulifer tenellus (Baker). On eggplant E. decipiens, E. decedens, C. chinai and E. lybica (De Barg). On cabbage and cauliflower plants, E. decipiens, E. decedens and Balclutha hortensis (Lindb.) were found. The seasonal abundance of the dominant leafhopper species can be summarized as follows: The population density of E. decipiens were recorded two peaks at the 3rd week of July and the 3rd week of September, respectively on pepper and eggplant, while on cabbage and cauliflower plants two peaks were noticed at 4th week of October and at the end of January, respectively. On the other hand, E. decedens had one peak occurred at the 2nd week of August on eggplant plants and at the 2nd week of November on cabbage and cauliflower plants, while on pepper plant tow peaks were showed at the 3rd week of July and at the 3rd week of September. Population of B. hortensis recorded one peak with high population density at the 2nd week of October on cabbage and cauliflower plants. Population density of C. chinai recorded only one peak on pepper plants at the 3rd week of September. On the other hand, population of E. lybica on eggplant showed two peaks at the 3rd week of July and at the 3rd week of September.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
367
381
https://jpd.journals.ekb.eg/article_45324_5f13a20e1963080174b6840e63b02e1f.pdf
dx.doi.org/10.21608/jpd.2006.45324
EFFECT OF SOME POLLEN SUBSTITUTES ON BROOD REARING ACTIVITY AND QUEEN PRODUCTION OF HONEYBEE COLONIES
Reda
Omar
Department of Plant Protection. Fac. Agric. Moshtohor, Benha University, Egypt.
author
text
article
2006
eng
Wheat germ, dried brewer's yeast and defatted soybean flour were offered, in form of cake (paste), as pollen substitutes to honeybee colonies. The effect of such feeding on brood rearing activity and queen production were investigated during 2003/2004 and 2004/2005 seasons in the apiary of Faculty of Agriculture at Moshtohor. Summarized results are as follow: 1- The greatest total sealed brood area was measured during spring season, ranging between 1590.66 (control) – 2471.01 inch2/colony for wheat germ treatment in the first season; 1667.00 and 2538.33 inch2/colony in the second season. The least brood rearing activity, however was detected in winter during 2003/2004 and in autumn during 2004/2005. 2- The cake based on wheat germ induced the highest brood rearing activity in both seasons as the total sealed brood area reached 6874.00 and 7132.67 inch2/colony. Dried brewer's yeast cake came the second class (6210.00 and 5995.67 inch2/colony), followed by soybean cake (5291.00 and 5598.67 inch2/colony). On the other hand, control colonies reared 4475.33 and 4358.35 inch2/colony in 2003/2004 and 2004/2005, respectively. Percent increase in sealed brood area realized due to pollen substitutes feeding attained 52.99, 38.76 and 18.23% in the first season; 63.67, 37.57 and 28.46% in the second season for the colonies fed on the cake of wheat germ, dried brewer's yeast and defatted soybean flour, respectively. Feeding queen rearing colonies on the test pollen substitutes resulted in considerable increase in grafted queen cups acceptance, ranging between 29.49 – 86.44%. In addition, an increase in the emergence of virgin queen, ranging between 45.11- 105.10% was detected in pollen substitute fed colonies. Wheat germ cake proved most potent in enhancing both grafted cups acceptance and virgin queen emergence to be especially during clover season.
Journal of Productivity and Development
Zagazig University. Institute of Efficient Productivity
1110-2543
11
v.
2
no.
2006
383
391
https://jpd.journals.ekb.eg/article_45325_6e0930c8d7fe027b4e371577da91f7b5.pdf
dx.doi.org/10.21608/jpd.2006.45325