Agricultural Research Journal Suez Canal University /
[9000717.] رقم البحث : 9000717 -
Yield Response of Two Canola Varieties to Nitrogen and Bio Fertilizers /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 12/01/2015
تاريخ قبول البحث 12/01/2015
عدد صفحات البحث 8
H.M. Abd El-Mottaleb
A.M. Gomaa
Canola Varieties, Nitrogen, Bio Fertilizers, Sandy Soil.
Two field experiments were carried out during 1999/2000 and 2000/2001 seasons at the Experimental Farm, Faculty of Agriculture, Suez Canal University, Ismailia Governorate, Egypt to study the effect of nitrogenous and bio fertilization on yield and yield components of two canola cultivars ( Topas and AD 201). The results showed that AD 201 cv. surpassed Topas cv. in seed and oil yields/fed. The highest seed and oil yields were obtained by applying 50 kg N/fed. Inoculation with Pseudomonas or soil yeast (Rhodotorula) significantly increased number of branches /plant, 1000- seed weight, siliques yield/fed., seed yield/fed. and oil yield/fed. The highest values of increases were recorded owing to the combined application of Pseudomonas and Rhodotorula.
استجابة محصول القمح ) Triticum durum.L ) للسماد النيتروجيني تحت الظروف البعلية بالقبة. ليبيا /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 12/01/2015
تاريخ قبول البحث 12/01/2015
عدد صفحات البحث 10
الطيب فرج حسين
محصول القمح، السماد النيتروجيني، الظروف البعلية، ليبيا
أقيمت دراستان حقليتان خلال موسمي الزراعة 2002/2003 و 2003/2004م بالقبة إحدى الأجزاء الشرقية بالجبل الأخضر بالجماهيرية ذات تربة طمية تفاعلها 7.89, 8.01 و محتواها من المادة العضوية 2.7, 2.8 و النتروجين الكلي 0.2% و كمية الهطول بلغت من 310, إلى 375 مم خلال موسمي الدراسة وذلك لمعرفة تأثير عنصر النيتروجين المضاف في المستويات (صفر, 80, 160, 250كجم/هـ) في صورة يوريا 46% عند مرحلة 4 أوراق كاملة على محصول القمح صنف (ازردة) احد الأصناف الصلبة والمستنبط محلياً. صممت الدراستان بالقطاعات كاملة العشوائية في 4 مكررات أظهرت النتائج وجود فروق معنوية في دليل مساحة الأوراق, ومعدل نمو المحصول في الفترة (ما قبل التفريع) وعدد الاشطاء الحاملة للسنابل بينما كانت الفروق غير معنوية بالنسبة لعدد الاشطاء الغير حاملة للسنابل / م2, وزن السنابل كجم/ م2, ووزن حبوب السنبلة, وطول السنبلة, وجود فروق معنوية في دليل الحصاد و دليل البذور وذلك بين المستويين 160 و 250كجم ن/ هـ مقارنة بعدم إضافته. 61, نظر للمحصول البيولوجى فلقد اظهر اختلافاً معنوياً بين أدنى محصول 1.61, 1.73 وأقصى محصول 5.07, 3.21 طن/هـ عند عدم التسميد أو التسميد بمعدل 250 كجم ن/ هـ في موسمي الدراسة الأول والثاني, على التوالي. كما لوحظ أيضا نفس الاستجابة لمحصول الحبوب وفي موسمي الدراسة الأول و الثاني من حيث أدنى محصول 0.57, 0.49,ن/هـ و أقصى محصول 1.49, 1.4 طن/هـ عند عدم التسميد أو التسميد بمستوى 250كجم/هـ وفي كلا الموسمين على التوالى. واظهر محصول القش وجود فروق معنوية بين أدنى محصول 1.04, 1.12طن/هـ وأقصى محصول 3.58, 1.81طن/هـ عند عدم إضافة النيتروجين أو إضافته بمعدل 250كجم/هـ وفي موسمي الدراسة الأول والثاني وعلى التوالي و وكما أعطى محصول البروتين كجم/هـ ونسبة البروتين الخام % فروقاً معنوية باختلاف مستويات النيتروجين المضافة, حيث كان أدنى محصول بروتين ونسبة البروتين الخام 40.74, 48.43 كجم/هـ و 8.2, 7.94%بينما أقصى محصول بروتين ونسبة البروتين الخام فكان 190.72, 165.48كجم/هـ و 12.8, 11.82% عند عدم إضافة النيتروجين أو إضافته بمستوى 250كجم/هـ في كلا موسمي الدراسة الأول والثاني و بالتوالي.
An experiment with 2.1+ 0.1 g Nile tilapia Oreochromis niloticus was conducted to evaluate the influence of partially or totally substituting of fish meal (FM) protein by soybean meal (SM) in practical diets supplemented with 3 microbial phytase levels (0, 1000, 1500 IU). Three diets were formulated to be isonitrogenous (ca. 35% crude protein) and isocaloric (ca. 461 Kcal./100g protein). The control diet, diet 1, and diet 2 contained FM and SM, as merely the sole sources of protein respectively. Diet 3 contained 20% protein from fish meal and 15 % of its total protein from Soya bean meal. Each diet was supplemented with 3 levels of phytase (0, 1000, 1500 IU/Kg diet). Three replicates groups of fish per treatment were hand-fed twice a day for 90 days in glass aquaria. After 90 days, fish fed FM diet and fish fed SM diet supplemented with 1500 IU/Kg phytase had significantly (p<0.05) higher weight gain, absolute growth rate, specific growth rate, protein efficiency ratio, feed efficiency and feed conversion ratio than the rest of experimental groups. Supplemental phytase tend to increase bone ash, body and bone phosphorous in fish fed SM diet and FM plus SM diet. No significant differences in body composition among treatments were observed. The present study demonstrates that a diet containing 35% crude protein with 20% protein from FM and 15% crude protein from SM supplemented with 1500 IU phytase is adequate for good growth of fingerlings Nile tilapia.
The effects of supplementing diets with three levels (zero, one and two g/kg diet) of Yea-Sacc1026 (YS) on growth performance, carcass characteristics, some blood parameters and economic efficiency of Fayoumi chicks were examined. One hundred fifty, 3 weeks old Fayoumi chicks were used and randomly assigned to three groups. Each group received one of the dietary YS levels. The experiment lasted 10 weeks (from 3 to 13 weeks). Inclusion of one g YS per kg diet significantly (P<0.05) increased body weight of Fayoumi chicks as compared to the other treatments. The overall means of body weight gain of Fayoumi chicks which received YC were significantly higher than control. Chicks which received diets supplemented with YS showed significant reduction in the total amount of feed consumed as compared to the control. Feed consumption was significantly lower as a result of supplementing 2 g YC/kg diet than the other treatments. Significant improvement of feed conversion efficiency (11.25%) was achieved as a result of feeding either level of YS. Plasma total protein, glucose, calcium, and inorganic phosphorus were not significantly altered by feeding diets supplemented with YS. Significant (P<0.05) decrease in average plasma triglycerides and cholesterol levels were found in Fayoumi chicks which received the dietary YS. Relative weights of feather, liver, gizzard, abdominal fat, and gonadal organs were not significantly affected by dietary treatments. However, males that received the YS in their diets showed significant increase in their relative eviscerated carcass as compared to the control. Significant increase of spleen weight percentage in chicks which received the diet supplemented with 1g YS/kg diet. Feeding diets supplemented with YS resulted in improvement of economic efficiency. About 16.18% and 10.53% increase in economic efficiency was observed in groups which received the diet supplemented with 1 and 2 g YS/kg diet, respectively. These results indicate that supplementing diet with one g YS/kg diet was the most effective for improving growth performance, eviscerated carcass percentage, and the best economic efficiency .Therefore, it is recommended to use this level of Yea-Sacc1026 under summer condition.
This study was carried out to determine the effects of supplemented 4 levels of zinc (Zn) as zinc sulphate (ZnSO4.7H2O) in broiler diets on performance, carcass characteristics, some blood parameters and economic efficiency of broilers. Two hundred, one-day old male broiler (Arbor Acres) chicks were used and randomly assigned to 5 groups.The birds were fed either a control diet or the control diet supplemented with either 50,100,150 or 200 mg Zn/kg diet. The experiment lasted 7 weeks.The results obtained can be summarized as follows: Significant increases in final body weight and total body weight gain (0-7wks) were observed in groups received 50 and 100 mg Zn/kg diet compared to the control group, and the other treated groups. However there were significant decreases in total body weight gain in groups received 150 and 200 mg Zn/kg diet compared to the control group. A significant decrease in total feed consumption was observed in groups received 150 and 200 mg Zn/kg diet compared to the control group and the other treared groups during the whole experimental period (0-7wks). Feed conversion efficiency for the whole experimental period (0-7wks) was improved significantly of groups received Zn supplemented diets 50, 100 and 150 mg/kg diet compared to the control group. Data of carcass characteristisics showed non significant differences between the treated groups which received Zn supplemented diet as compared to the control group concerning liver weight, heart weight and empty gizzard weight. Significant decreases (P<0.05) were observed in abdominal fat weight and percentages in all groups which recevied Zn supplemened diet compared to the control group.Carcass weights were significantly increased of groups recevied 50 and 100 mg Zn/kg diet compared to the control group. Also, there were significant increases (P>0.05) in carcass percentages in all groups which recevied Zn supplemened diet compared to the control group. Zinc supplementation to broiler diets depressed both bursa and thymus (weights and percentages) and increased spleen weight and percentage in all treated groups compared to the control group. Plasma total protein was significantly increased of groups recevied 100 and 200 mg Zn/kg diet compared to the control group. Also, plasma albumin was significantly increased (P>0.05) in all groups which received Zn supplemented diet compared to the control group. The obtained data revealed significant increase in plasma globulins of group recevied 100mg Zn/kg diet compared to the control group. The data obtained for plasma creatinine, total lipid and triglyceride revealed significant increases (P>0.05) in all groups which received Zn supplemented diet compared to the control group. While plasma albumin-globulin ratio and total cholesterol showed non significant differences in all treated groups which received Zn supplemented diet as compared to the control group. The data showed non significant differences between all treated groups which received Zn supplemented diets in number of red blood cells , hemoglobin, mean corpuscular volume and packed cell volume compared to the control group. Meanwhile, there was a significant increase in white blood cells in all groups which received Zn supplemented diets as compared to the control group. Supplementing zinc to control diet at levels of 50 and 100 mg/kg diet improved economic efficiency (EE) as compared to the control group. These improvement in EE were 6.92 and 7.19 % than the control value respectively. These results indicate that supplementing zinc at levels 50 and 100 mg Zn/kg diet were more effective for improving growth perfomance and economic efficiency, increasing carcass weight and percentages and reducing abdominal fat than the control. However adding 50mg Zn/kg diet would be recommended as a suitable supplemental level to broiler diets.
Two field experiments were carried out at the ? Experimental Farm, Faculty of Agriculture, SuezCanal University, Ismailia during 2003and 2004seasons to study the effect of two levels of P 2O5 ( 16and 32kg/fed.) and five foliar micronutrients treatments 700ppm Zn ( ZnSO 4.7H2O) , 600ppm Mn ( MnSO4.7H2O), 600ppm Fe (FeSO 4.7H2O) , 100ppm B ( H3BO 3) , 100ppm Mo ( Na2 Mo4.2H2O) and the control onanatomical structure and yield components of soybean crop. Results showed that phosphorus fertilization and foliar nutrition with some micronutrients (Zn, Fe, B, Mn, Mo) treatments affected significantly both secondaryroot and stem structure of soybean plants. Generally, most of the studied parameters of secondary root structure were decreased as a resultof the most studied treatments. Significantly highest values fo r root transverse section diameter, maximum thickness of phloem tissue, maximum diameter of xylem cylinder, number of xylem vessels in T.S., number of rays, maximum width of rays and diameter of maximum vessels were observed at control compared to the studied treatments. In general, most of the studied anatomical characters (thickness of phloem + cambium, thickness of xylem ring, width of xylem ring, thickness of medullary rays, width of medullaryrays and number of medullary rays between the two vascularbundles) of soybean stem increased at 32kg P 2O5/fed., and foliar spraying of Zn, Mn and Mo treatments. In addition, the maximum values of number of xylem arms/vascular bundle and number of xylem vessels in T.S. were recorded at 32kg P 2O5/fed., and foliar spraying of B treatment. Increasing P level from 16kg P 2O5/fed., to 32kg P 2O5/fed., Increasedsignificantly number and weight of pods and seeds/plant, shelling percentage and seed protein content (%), as well as, oil and protein yields (kg/fed.) in thetwo growing seasons. While, the two P levels and did not differ significantly from each other concerning the effect on 100-seed weight in two seasons and seed oil % in the second season only. Foliar spraying of Zn, Fe, B, Mn or Mo caused significant increases in number and weight of pods and seeds/plant, shelling percentage, seed oil content (%), seed protein content (%) and yield of protein/fed. Seed yield and yield (kg/fed.) were significantly increased by foliar spring with the above mentioned micronutrients, except that Mo did not affect significantly oil yield in the first season, as well as, seed yield in the second season. Also, foliar spraying with Fe, B or Mo did not exert significant effect on 100-seed weight in the second season. The interaction between phosphorus fertilizer levels and micronutrients affected significantly on number of seed/plant, weight of seeds/plant and seed and oil yields (kg/fed.) in the two growing seasons. The highest values were obtained with 32kg P 2O5/fed., and foliarsp rayingwith Zn, while the lowest values were obtained with 16 kg P 2O5/fed., without spraying micronutrients
Thermal inactivation of Lactic Acid Bacteria (Streptococcus thermophilus) /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 13/01/2015
تاريخ قبول البحث 13/01/2015
عدد صفحات البحث 6
A. HEl. Demerdash.
Heat treatment, Phage inactivation, LAB phages.
The effect of thermal treatments on t he viability of three Streptococcus thermophilus (S. thermophilus) phages ( 0/S0, 10/S0and 8/S8) in medium, milk with different fat percentages, and yoghurt was investigated by plaquetitration. The thermal resistance was depended on the phage type. Treatm ents at 90 ° C for 1and 5min, pasteurization at 72 ° C for 30second and long-time pasteurization 62 ° C for 30min produced a total inactivation of high titer suspensions of all studied phages. Additionally, increase the fat percentage from 0.5 to 4.5 % in milk increased the phages stability against the high heat treatment. Mixed phages in milk or yoghurt were more stable when it was subjected to heat treatments. Phage ( 0/S0and 10/S0) were more stable against the high heat treatment than (8/ S8). The infectivity of phages is affected by freezing at -10and -20for 30, 60and 120min. A complete- inactivation was observed when mixed phages were subjected to freezing at –20for at least 60to 120min. The conditions of yoghurt production (temperature and time of incubation) at 40-42 ° C for 3-4hrs were suitable for phage propagation, so the phage lyses was increased under these conditions . All phages ( 0/S0, 10/S0and 8/S8) were resistant at pH ranges from 5.5 to 7.5 . No clear inactivation was observed by storage thephages in normal milk or in yoghurt at 4 ° C for 15days. The rate of S . thermophilus phages inactivation was higher S . thermophilus was in single culture than in mixed culture containing Lactobacillus delbrueckii subsp. bulgaricus (L. bulgaricus). Clear differences were observed in phage inactivation of different phages for the same strains. These obtained data of inactivation kinetics of relevant bacteriophages, will make it possible, by specifically setting process parameters, to improve fermentation safe ty
Influence of the Bacterial Cultures’ Type on Some /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 13/01/2015
تاريخ قبول البحث 13/01/2015
عدد صفحات البحث 9
H. A. El-Demerdash
A. M. El-Kholy.
Yoghurt, yoghurt starter cultures, EPS bacteria
Yoghurt milk samples were fermented either by ropy-strains (r -strains ) of Streptococcus thermophilus 71and Lactobacillus delbrueckii subsp. bulgaricus Mt64(producing exopolysaccharides, EPS) or non-ropy s trains ( classic culture) of Streptococcus thermophilus ER1and Lactobacillus. delbrueckii subsp . bulgaricus 92063. Also mixed culture of ropy and classic culture were used in making yoghurt. The resulted yoghurt was stored in the refrigerator for 15days a nd changes in chemical, rheological, bacteriology and organoleptic properties of different treatments were assessed. Yoghurt made from milk fermented by r-strains developed less acidity during fermentation and during cold storage. However, it also, presented higher rheological and microbiological properties, and less syneresis than yoghurt produced by using classic strains. Regarding final product characteristics it was found that the functional properties of yoghurt increased when the ropy starter culture was applied. Yoghurt made with the ropy culture exhibited increase viscosity than did yoghurt made with the culture unable to produce EPS. Using the ropy-starter cultures improved the survival count for yoghurt and the total viable count maintained their ability ( >10 7 cfu /g) till the end of the storage period. The sensory analysis has shown that yoghurt made by using ropy strains had higher scores for body and texture, appearance and a good flavor than yoghurt fermented with classic strains. However, clear improvement was observed in the rheological, bacteriological and sensory properties when yoghurt was fermented by mixed culture form (ropy and classic strains). It can be concluded from this study that the yoghurt fermented with mixed cultures from ropy a nd classic strains is better than yoghurt fermented only by one of them in regard to final yoghurt characteristics
ABSTRACT In fi eld trail, 20 -year –old Succary Abiad mango trees, grown in Sandy soil at Abou-Sweer region, Ismailia Governorate, Egypt, were sprayed with amcotone ( commercial mixture of 1-naphthyl acetamide ( 1.2 %) and 1-naphthyl acetic acid ( 0.45%) in four concentrations ( 0,300, 600and 900ppm) at full bloom in randomized complete block design. An increment in initial number of fruits per panicle and shoot length was exhibited by 600 ppm followed by 300ppm. The critical periodof fruit DROP waswith on 30-45days after full bloom, where the most reduction was attached to 900and 600ppm in each period of fruit drop, which resulted in the greatest number of mature fruits per tree and the highesttree yield. A significant response towards earliness was noted with 900ppm. An increment in fruit, seed, pulpweight and net ratio as well as SSC/acidity, ascorbic acid, total sugar, reducing and non reducing sugar were observed with 900ppm while 300ppm gave the longest fruit length and led to reduce SSC/acidity, but fruitwidth, fruit shape index, SSC and total phenols were varied in very short range among the various concentrations. A significant increase in number of leaves per shoot,leaf density and foliage area per shoot were obtained by 900ppm amcotone. from a practical stand point, full bloom spray of amcotone at 900ppm may be recommended to reduce fruit DROP and increasenumber of fruit per tree, fruit weight and tree yieldas well as improvefruit quality and vegetative growth.
Effect of Some Bioagents, Fungicides and Fertilizers /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 15/01/2015
تاريخ قبول البحث 15/01/2015
عدد صفحات البحث 10
M. N. A. Khalil
A. Seif El-Eslam
Bean, Phaseolus vulgaris, root rot
Bean is subjected to infection with damping-off and root rot diseases causing great loss in seedling emergence and seed yield. Under laboratory conditions, the most effective bioagent on decreasing linear growth and number of selerotica of Sclerotium rolfsii was T. viride followed by Azotobacter chrococcum (genetically modified), Pseudomonas fluorecense and Bacillus megaterum, respectively. While, A. chrococcum and Candida spp. were the least effective ones. Under greenhouse conditions, the bioagent T. viride was the most effective on reducing incidence and severity of the infection with S. rolfsii and gave the highest crop yield followed by A. chrococcum; P. fluorecense and B. megaterum, respectively. While, A. chrococcum and Candida spp. were the least effective ones. The most effective fungicide on reducing the linear growth of S. rolfsii in vitro was Ronilan followed by Vitavax/Thiram. While, Euparein and Switch gave the lowest effect. Under greenhouse conditions, the same results were obtained using these fungicides against damping-off disease. Applying different levels of fertilizers (nitrogen, phosphorus and potassium) decreased incidence of post emergence damping-off at different degrees. Using the previous fertilizers at levels of 100:200:100 kg/feddan and 150:300:150 kg / feddan significantly reduced the disease than the other levels.
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 15/01/2015
تاريخ قبول البحث 15/01/2015
عدد صفحات البحث 7
Olfat M. Moussa
Amira H. Abdullah
Eman A. Hamad
Grape - Fruit Rots Fungi
Using TLC technique, it was found that only A. flavus isolate No1, among the tested fungi, produced aflatoxins in various amounts. The remainder fungi could not produce either aflatoxin or ochratoxin. On the other hand, all the tested fungi had the ability to produce other biological active materials (B.A.M.) in the culture filtrates except Botrytis cinerea. These materials are not fractionated. To confirm toxin formation, two different bioassay methods were used, i.e. okra seed germination and bacterial growth inhibition. It was found that there are different degrees of either seed germination, yellowing percentage or inhibition zones of Bacillus subtilis growth. Meantime, the boiling of fungal filtrate has no effect on bacterial growth inhibition. Isolate of A. flavus No.1, isolated from rotted grape fruit during marketing gave aflatoxin B1 and B2 in high concentration and this isolate was highly positive in all the bioassays compared with other tested fungi.
Biology of the Bethylid Parasitoid Goniozus legneri Gordh /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 15/01/2015
تاريخ قبول البحث 15/01/2015
عدد صفحات البحث 7
Awad A. Sarhan
Fawzia A. Hassanein
Shoukry A. A.
Nesrin A. El-Basha
Bethylidae - legneri Gordh
The bethylid parasitoid Goniozus legneri Gordh was introduced from U.S.A in 1997 as a bio-control agent against the pyralid pest Palpita unionalis (Hb.) attacking olive trees in Egypt. The present paper deals with its biology. The four constant temperatures, 15, 20, 25 and 30 oC; each combined with 60 ±5 % R.H. were used to estimate the durations of immature stages and activity of adult reproduction. The temperature showed a significant effect on each items. The most favourable hygrothermic condition are 30 oC and 60 %R.H. The longevity of mated and unmated parasitic individuals were also estimated under different temperatures and feeding regimes. It was significantly affected by such factors.
Description and Duration of the Immature Stages of the Encyrtid /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 15/01/2015
تاريخ قبول البحث 15/01/2015
عدد صفحات البحث 5
K.T. Awadallah
A. M. A. Ibrahim
Mona H. Tawfik
Angel R. Attia
Neoplatycerus palestinensis –Description and duration of immature stages
The present paper deals with the description and duration of the immature stages of the encyrtid parasitoid, Neoplatycerus palestinensis (Rivnay). This encyrtid is recorded for the first time in the present work. It is a solitary endoparasitiod on the vine mealybug Planococcus ficus infesting the table grapes, Vitis vinifera. The description of the various immature stages of this parasitoid was achieved; the egg, 4 larval instar, prepupa and pupa. The duration of such immatures were also estimated under the constant hygrothermic conditions of 30oC and 55-60 % R. H.
On the Biology of the Vine Mealybug Planococcus ficus (Signoret) /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 15/01/2015
تاريخ قبول البحث 15/01/2015
عدد صفحات البحث 8
K. T. Awadallah
A. M. A. Ibrahim
Mona H. Tawfik
Angel R. Attia
Planococcus ficus – biology, Vine Mealybug.
Planococcus ficus (Signoret) is one of the most important pests attacking the grape vine, Vitis vinifera in Egypt, especially in the newly-reclaimed areas. The present paper deals with the effect of temperature and host plant on the bio-parameters of this pest. The hygrothermal conditions of 30 oC and 55-60% R.H. seem to be the most favorable conditions for either development or reproduction of the pest. On the other hand, using sprouting potato tubers in the pest’s rearing is most suitable than pumpkin fruits; showing higher value of net reproductive rate together with shorter population doubling time.
Effects of three insect growth regulators (IGRs) chlorfluazuron, flufenoxuron and pyriproxyfen on certain biological in Spodoptera Littoral’s parameters were evaluated. The two chitin synthesis inhibitors, chlorfluazuron and flufenoxuron were the first and second most toxic IGRs, respectively for the larvae, whereas the juvenile hormone mimic, pyriproxyfen was the least toxic compound. Chlorfluazuron and flufenoxuron decreased the mean larval duration in the parental generation (the generation during which the treatment was carried out) and in both the first and second generations (the generations following the parental generation) as compared to non-treated larvae. Such decrease in larval duration was only significant in chlorfluazuron – treated larval in the parental generation. However, pyriproxyfen resulted slightly increased in the parental and first generation the slightly decrease in the second-generation .In the same context, all treatments resulted in a slight increase in the pupal duration as compared to parallel control. However, these treatments slightly dacreased in pupal weight and such decrease was generation-dependent. Both sexes of Spodoptera littoralis moths survived after treatment of the 4th instars treated with the LC50 values of chlorfluazuron, flufenoxuron and pyriproxyfen lived shorter than non-treated moths in the three generations. Such decrease was only significant for chlorfluazuron-insects in all generations, and for the male and female moths treated with flufenoxuron in both the parental and second generations, respectively. The percent of egg-hatch also was decreased as a result of treatment with the three tested IGRs in the three generations. However, chlorfluazuron exhibited the highest effect in suppressing the reproductive potentials of the female moths.
Survey of some rodent species in three different localities during winter, 2003-2004 at Sharkia Governorate showed that the highest population density were 54.9, 25.4 and 19.6 % for Rattus rattus alexandrinus, Rattus norvegicus and Mus musculus. In houses, the percentages of rats population density were 90, 71.4 and 30.7 for M. musculus, R. rattus alexandrinus and R. norvegicus, respectively. The Norway rat, R. norvegicus, was the most dominant species in granaries (53.8 %), while the gray bellied rat, R. rattus alexandrinus was the least common species (7.14 %). In citrus farm, the R. rattus alexandrinus was the most frequent populations than other species. The survey of ectoparasites infesting rodents in three localities of the study revealed the occurrence of the three species of ectoparasites (i.e., lice, mite and fleas) on the three rodent species. The infestation rate with ectoparasites was highly on males than females in all trapped species. The infestation rates were 12.1, 9.6 and 8.2; in citrus farm, while were 7.3, 4.0 and 0.0; in granaries, but in houses were 6.3, 2.0 in granaries and 3.3 for R. norvegicus, R. rattus alexandrinus and Mus musculus, respectively. The application of rodenticides (i.e., Difenacoum, coumatetrayl and Diphacinone) caused highly reduction of rat population in citrus farm, houses and granaries respectively. While, coumatetrayl revealed the lowest rodenticides effective against population reduction percent than another rodenticides in granaries.
Effect of Potassium and Micronutrients (Fe, Zn, Mn, and Their Mixtures) /
تخصص البحث : General
Agricultural Research Journal Suez Canal University /
تاريخ تقديم البحث 15/01/2015
تاريخ قبول البحث 15/01/2015
عدد صفحات البحث 6
Megahed H. E. A
Hashem H. H. A
Broad beans; Aphis craccivora Koch; Potassium and micronutrients fertilization.
The effect of potassium fertilization and Fe, Zn, Mn, and their mixture on the population density of Aphis craccivora Koch infested broad bean plants and seed yield. In completely randomized design the variety Giza 461 was chosen and sown at Ismailia during 2001/2002 and 2002/2003 seasons. Recommended doses of N and P2O5 (20 and 25 kg/fed) with 0.5 g/l of Fe or Zn or Mn or their mixture in the presence and absence of (24 kg K2O/fed.). the results indicated that, in absence of K plants treated with Fe or Zn or Mn or their mixture increased Fe, Zn, Mn and protein content accompanied with reduction in moisture, aphid infestation and increased seed yield significantly. The presence of K results in expend the previous responses, higher levels of Fe, Zn, Mn content and percentages of protein and lower percentages of moisture accompanied with higher increase of seed yield.
جميع البيانات التي يتم تسجيلها على النظام هي ملك للجهة صاحبة هذه البيانات
لا يتم الاطلاع على هذه البيانات من قبل مهندسي المركز إلا للضرورة القصوى ولغرض الدعم الفني وبالاتفاق مع الجهة صاحبة البيانات شفوياً أو كتابياً
لا يتم إعطاء أي بيان من بيانات النظام لأي فرد او جهة فرعية تنتمي للجهة صاحبة البيانات او لأي جهة أخرى إلا بموافقة كتابية من الجهة صاحبة البيانات
يمكن استخدام البيانات المسجلة على النظام بهدف عمل إحصائيات يستفاد منها فى قياس اداء النظام وكفاءة استخدامه من قبل مستخدميه
يتم تأمين جميع البيانات الخاصة بالنظام من خلال تأمين الحاسب الخادم الذي يستضيف البيانات ومن خلال تأمين انتقال البيانات بين جهاز المستخدم والحاسب الخادم وكذلك تأمين واجهة النظام التي يستخدمها المستخدم
كل مستخدم للنظام مسئول مسئولية كاملة عن كلمة المرور الخاصة به وعليه اتخاذ كافة الاحتياطات الممكنة حتى لا يستطيع أى شخص آخر الحصول عليها