Ismailia Governorate Research Articles

RESPONSE OF PEACE LILY (SPATHIPHYLLUM WALLISII REGEL) PLANTS TO FOLIAR SPRAY WITH SOME GROWTH REGULATORS AND MICRO ELEMENTS

A pot experiment was conducted during two successive seasons (2016/2017 and 2017/2018) at the greenhouse of the Ornamental Dept., El-Kassasin Res. Station, Ismailia Governorate, Egypt. This study was carried out to investigate the effect of foliar spraying with some growth regulators (gibberellic acid (GA3) at 100 and 200 ppm, kinetin (Kin) at 100 and 200 ppm beside the control treatment) and a microelements mixture at (0, 1, 2 and 3 g/l) on vegetative growth, root system and quality of peace lily(Spathiphyllum wallisii Regel) plant. Results showed that the interaction treatment between spraying peace lily plants with Kin at 100 ppm in addition to the microelements mixture at 2 g/l gave the highest values regarding number of leaves/plant, stem diameter and leaf area, number of roots/plant in both seasons, fresh weight of roots in the 2nd season and dry weight of root, fresh and dry weight of shoots, number of both shoots and flowers/plant in both seasons. The interaction treatment between spraying plants with GA3 at 200 ppm and 2 g/l microelements mixture gave the tallest plants in both seasons. However, the interaction treatment between Kin at 100 ppm and spraying plants with 3 g/l microelements mixture was the best interaction treatment for enhancing the concentration of total chlorophyll and total carbohydrates in shoots, in both seasons. Generally, the best interaction treatments for increasing growth, flowering and biochemical constituents was obtained with Kin at 100 ppm and 2 g/l microelements.

The Six Thinking Hats program as a tool to measure the level of creative thinking of managers in tourism companies in Ismailia

The research aims at verifying the effectiveness of the Six Thinking Hat program as a tool to measure the level of creative thinking of managers to innovative solve administrative problems facing the tourism companies in Egypt in general and tourism companies in Ismailia Governorate in particular .

THE EFFECT OF DIFFERENT WELL WATER QUALITY AND IRRIGATION METHODS ON SOME CHEMICAL PROPERTIES AND SALINITY DISTRIBUTION OF SOIL IN ARID AREAS: A CASE STUDY OF ISMAILIA GOVERNORATE

The increasing demand for irrigation water to secure food for growing populations with limited water supply suggests re-thinking the use of non-conventional water resources. The study was conducted to monitor the salinity distribution in soil under different well water quality and irrigation methods in specific sites of Ismailia Governorate region. Water and soil samples were collected from hundred randomly selected sites. Both soil and water samples were analyzed for chemical characteristic which included salinity, cations, anions and SAR. The findings indicated that the mean soil pH was 7.35 while the mean EC value was 3.73 dS/m. The mean cations in the water samples were 7.43, 5.98, 0.17, and 23.33 meq/l for Ca2+, Mg2+, K+, and Na+, respectively and the a mean value of Sodium Adsorption Ratio (SAR) was 9.11. The mean bicarbonates concentration detected in the irrigation water was 4.43 meq/l, while the mean chloride and sulphate were 29.95 and 2.49meq/l, respectively. The mean values of EC of soil were 3.94, 5.98 and 4.56 for drip, sprinkler and surface irrigation methods in depth 0-20 cm, respectively. While, in soil depth 20-40 cm the mean values of EC were 6.78, 4.94 and 2.99 for drip, sprinkler and surface irrigation methods, respectively. The spatial distribution of soil salinity in the soil horizons were found to be higher at shallow depths of 0-20cm and decreasing gradually up to a depth of 20-40cm. This trend is clear with surface and sprinkler irrigation method. In drip irrigated method, the salinity distribution showed a different pattern from that observed in surface and sprinkler irrigation. Salinity was the lowest in the surface layer (0-20 cm), and increased gradually with soil depth (20-40 cm). Salt concentration factor (SCF) of Ismailia soil under studies ranged between0.14 to 6.33. The results showed that SCF varies according to water and soil quality and irrigation methods.EC of soil was positively and significantly correlated with Ca2+, Mg2+, Na+ , K+, Cl-, HCO-3 but positively and not significantly correlated with pH andSO2-4.The general trend showed that soil salinity increased with an increase in water salinity. Correlation coefficient (r) between EC of irrigation water and EC of soil was 0.550**.

Genetic Variation of E. coli Strains Isolated from Poultry Slaughterhouses at Ismailia Governorate, Egypt

Genetic Variation of E. coli Strains Isolated from Poultry Slaughterhouses at Ismailia Governorate, Egypt

Mites Inhabiting Some Fruit Trees in Ismailia Governorate

Field study was carried out on mite species inhabiting some fruit trees in Ismailia Governorate, during the period from October 2014 to September 2016. Survey of mites proved the occurrence of 44 mite species belonging to 36 genera and 21 families belong to 2 orders and 4 suborders. Order: Acariformes include three suborders; Prostigmata, Astigmata and Cryptostigmata. Suborder Prostigmata was represented by 14 families: Tetranychidae (7 species), Tenuipalpidae (8 species), Eriophyidae (one species), Stigmaeidae (2 species), Neophyllobiidae (2 species), Caligonellidae (one species), Raphignathidae (one species), Cheyletidae (3 species), Eupalopsellidae (one species), Bdellidae (one species), Cunaxidae (one species), Eupodidae (one species), Tydeidae (3 species) and Tarsonemidae (one species). Suborder: Astigmata was represented by two families: Acaridae (two species) and Glycyphagidae (one species). Suborder Cryptostigmata was represented by two families: Oppiidae (one species) and Oribatulidae (one species). On the other hand, order: Acariformes include one suborder: Mesostigmata, which represented by three families: Phytoseiidae (4 species), Ologamasidae (one species) and Ameroseiidae (one species).

Population Fluctuations of The Phytophagous Mite, Oligonychus mangiferus and its Predator on Mango Trees in Ismailia Governorate, Egypt

Seasonal abundance of the phytophagous mite Oligonychus mangiferus and its predator Amblyseius swirskiiassociated with mango orchard trees was investigated at the experimental farm of the agriculture faculty of the Suez Canal University, Ismailia, Egypt. This study was carried out during two successive years from October 2014 to September 2016. Results showed that the temperature and moisture R.H.% were significantly affected the mean abundanceof the phytophagous mite O. mangiferus and its predator A. swirskiiassociated with mango orchard trees. The highest mean abundance of O. mangiferus was recorded in the summer season (2.96 ± 0.6 indv./leaf) and (1.33 ± 0.05 indv./leaf) for A. swirskii, respectively in the first year (from October 2014 to September 2015). On the other hand, the lowest mean abundance was recorded in the autumn (0.6 ± 0.11) for O. mangiferus, (0.23 ± 0.09 indv./leaf) for A. swirskii. The mean abundance of O. mangiferuspopulations increased to (3.43 ± 0.7 indv./leaf) in the second year of study in contrast to the populations of its predator. The results stated that the temperature had a significant effect on the population abundance of the phytophagous mite, O. mangiferus and its predator while the relative humidity had a negative effect on both populations.

Effect of pruning severity on yield and fruit quality of two mandarin cultivars

The present work was carried out during two consecutive seasons (2014 and 2015) in a private orchard located in Wadi Almollak, Ismailia Governorate, Egypt on 5-year-old trees. The study involved two mandarin cultivars, namely ‘Murcott’ and ‘Fremont’ (Citrus reticulata Blanco) grown on ‘Volkamer’ lemon (Citrus volkameriana Ten. and Pasq.) rootstock. ‘Murcott’ trees are prone to alternate bearing that can result in tree death as well as small fruit size. Pruning could reduce the crop size and the remaining crop should show an increase in fruit size. The small fruit size of ‘Fremont’ may make it unsuitable for cooler production areas. The trees of the two mandarin cultivars were pruned during the growth part of the season in January such that 25 (light pruning), 50 (moderate pruning) and 75% (heavy pruning) of the two-year-old shoots remained to bear the total yield tree-1, while the control plant was not pruned. The results showed that ‘Fremont’ mandarin showed the higher fruit yield compared to ‘Murcott’. Light pruning (25%) caused a significant higher yield than the control. Moderate pruning (50%) gave the highest increase in yield in the two seasons. ‘Fremont’ TSS (%) and TSS/acid ratio was superior to those of ‘Murcott’ in the control plant. All pruning treatments significantly increased TSS (%) and TSS/acid ratio in both ‘Fremont’ and ‘Murcott’ mandarin fruit. The results showed that light and moderate pruning of ‘Murcott’ and ‘Fremont’ produced acceptable yield as well as high desirable fruit quality.

RESPONSE OF TUBEROSE PLANTS (POLIANTHES TUBEROSA L.) TO CHEMICAL AND BIO FERTILIZATION AND THEIR EFFECT ON VEGETATIVE GROWTH, FLOWERING AND CHEMICAL COMPOSITION UNDER SANDY SOIL CONDITIONS

A field experiment was carried out at the Experimental Farm of El-Kassasin Horticultural Research Station, Agricultural Research Center, Ismailia Governorate, Egypt, to study the effect of partial substitution of chemical nitrogen fertilizer with biofertilizer containing two strains of nitrogen-fixing (Azospirillum lipoferum, Azotobacter chrococcoum), on vegetative growth, flowering and chemical composition of tuberose plants (Polianthes tuberosa L.) under sandy soil conditions to rationalize the use of mineral fertilizers and reduce pollution of the environment in order to increase the quantity and improvement quality of the product on the tuberose plants during the two successive seasons of 2017 and 2018. This experiment included seven treatments with three replications, which were the combinations between two of mineral nitrogen rates (50% and 75%) and three bio-fertilizers of nitrogen-fixing bacteria (Azospirillum lipoferum (S), Azotobacter chrococcoum (Z) and Azospirillum lipoferum + Azotobacter chrococcoum (S*Z) treatments in addition to the control which was 100% N. The treatments were arranged in Randomized Complete Block Design. The results showed that fertilizing tuberose plants with mineral nitrogen at 100% of the recommended dose recorded the highest values for plant height, number of leaves/plant and number of florets/spike. while fertilization with mineral nitrogen at 75% plus the dual inoculation with Azospirillum + Azotobacter recorded the highest values for fresh and dry weights of leaves (g)/plant, fresh and dry weights of root (g)/plant, fresh and dry weights of spike (g)/plant, floret diameter (cm), spike length (cm), longevity of tuberose cut flower spikes (days), in addition to leaves content of N, P, K, total chlorophyll a, b and carbohydrates %, as well as essential oil percentage in flowers without significant difference between them and control in most cases in both seasons.

EFFECT OF RICE STRAW AND APPLICATIONS OF POTASSIUM SILICATE, POTASSIUM HUMATE AND SEAWEED EXTRACT ON GROWTH AND SOME MACRONUTRIENTS OF SWEET PEPPER PLANTS UNDER IRRIGATION DEFICIT

growing seasons of 2013-2014 and 2014-2015, in a private farm at El-Salheya El-Gedida City, Ismailia Governorate, Egypt, to investigate the effect of rice straw (RS) as alternative to sandy soil (SS) and drenching applications of potassium humate (K2-HA) at 2 g/l, potassium silicate (K2SiO3) at 5 g/l, and seaweed extract (SWE) at 0.5 g/l on improving growth of sweet pepper (capsicum annuum L.) plants under deficit irrigation every 2 (I2), 3 (I3) and 4 (I4) days in addition to daily irrigation (I1) as control. Plant samples were taken at 90 days after transplanting to record leaf area, shoot fresh and dry weights, in addition to, determination of leaf relative water content (LRWC), concentrations of N, P, K and Ca. Mean values of drenching applications showed significant increase in the growth parameters ;shoot fresh and dry weights, leaf area, LRWC, as well as, concentrations of N, P and Ca in the two seasons comparing to untreated control and the best results were due to K2-HA followed by SWE then K2SiO3. The highest concentration of K was obtained by K2SiO3 followed by K2-HA then SWE. Plants were grown on RS showed significant increase in LRWC comparing to plants were grown on SS. Plants were applied with I2+ K2-HA+ SS showed the highest significant value of shoot fresh weight, shoot dry weight, leaf area, N, P and Ca concentrations followed by I2+SWE+SScomparing to control plants applied with I1+ SS without drenching applications. Plants were grown on RS showed significant increase in growth parameters comparing with control plants but less than those were grown on SS. The best results were achieved by I3 + K2-HA+ RS, I3 + SWE+ RS, I4 + K2-HA+ RS. Plants were grown on rice strawunderI3 irrigation and applied with K2-HA or SWE showed significant increase in N, P and Ca concentrations, while, under I4 irrigation an increase in N and P concentrations was obtained by K2-HA.The highest concentrations of k were observed with plants grown on SS under the highest level of irrigation deficit I4 by K2SiO3.It could be concluded from the present study that rice straw could alleviate the negative effect of low water supply and applications of K2-HA and SWE are recommended for enhancing sweet pepper growth and nutrient elements uptake under water deficit conditions.

EFFECT OF ORGANIC FERTILIZER, GYPSUM AND FOLIAR-CA ON YIELD, YIELD COMPONENTS AND QUALITY OF PEANUT PLANT GROWN IN SANDY SOIL

Two field experiment were conducted at Ismailia Experiment Research Station, Ismailia Governorate, Egypt during the two successive seasons of 2015 and 2016 to evaluate the effect of different rates of compost application (0, 12.5 and 25 Mg ha-1), gypsum at rates of (0, 0.6 and 1.2 Mg ha-1) and Ca-foliar (300 mg L-1) and its combination application on yield and quality of peanut grown in a sandy soil. Application of compost significantly increased pods and grain yield, shelling percentage and 100 grain weight of peanut as compared to control. The increases were 29.6 and 35.4 % for pod and 35.5 and 41.40 % for grain due applications of 12.5 and 25 Mg ha-1 compost. Application any of the two gypsum rates increased pods, grain yield, shelling percentage and 100 seed weight with non-significant difference between two rates. Addition any of the two rates of compost significantly increased N, K, Fe, Zn and Mn contents of straw and seed. Two rates of gypsum also increased the same nutrient with non-significant difference between two rates. Oil and protein contents of grain significantly increased due to application of compost and /or gypsum.

ENHANCEMENT OF ROCK PHOSPHATE APPLICABILTY BY COMPOST AND PHOSPHATE DISSOLVING BACTERIA AND ITS EFFECT ON QUALITY AND PRODUCTIVITY OF CANOLA PLANT GROWN IN SANDY SOILS

Two field experiments were conducted during the two early winter seasons of 2014/2015 and 2015/2016 at Ismailia Agricultural Research Station, Agricultural Research Center (ARC),Ismailia Governorate, Egypt. Aim was to evaluate enhancement of applicability of rock phosphate by addition of compost and inoculation with phosphate dissolving bacteria and its effect on quality and productivity of canola plant. The experiment included 3 factors as follows: (1) three rates of rock phosphate i.e. 0 (RP0), 250 kg ha-1 (RP1) and 500 kg ha-1 (RP2, (2) two treatments of compost: without application C0 and 24 Mg ha-1(C1) and (3) two P-dissolving bacteria (PDB): none (PDB0) and inoculation (PDB1). The highest values of plant growth characters, yield and its component, seed quality, nutrient content and their uptake of canola plant were obtained under treatment of RP2 + C1 + PDB1. It could be concluded that, the combined use of rock phosphate at rate of 500 kg ha-1 and compost manure at rate of 24 Mg ha-1 plus seed inoculation with PDB was more economical due to reduce and costs of the used fertilizers with access to results would be an appropriate substitute for chemical phosphorous fertilizer in sustainable agriculture system.

Description of a new species of Oodinychus (Acari: Uropodina: Trematuridae) from Egypt, with a key to the species

This paper reports on a collection of mites from the red palm weevil, Rhynchophorus ferrugineus (Oliver) (Coleoptera: Curculionidae) and its habitat in Ismailia governorate in Egypt. A new species Oodinychus egypticus n. sp. is described from adult females and males. This study continues work on possible biological control agents for the red palm weevil.

Management of Crown and Root Rot Diseases in Strawberry Commercial Fields in Egypt

Surveyed strawberry fields at three different districts (Abo Swar, EL-Kassasin and El-Manayef) in Ismailia Governorate during 2014 -2016 growing seasons showed that 13 fungal species belonging to 13 genera were isolated from infected roots, runners and crowns segments of strawberry plants. The most frequent isolated fungi were; Macrophomina phaseolina (53.33%) and Colletotrichum acutatum (33.33%). These two pathogenic fungi were used in this study. Biological and chemical control experiments were conducted and significant differences in diseases incidence (DI%) and disease severity (DS%) were found among treatments of bioagents and chemical fungicides compared with control treatments. DI and DS percentages reached 0% when Bacillus subtilis or Rizolex were applied in plots of artificial infested soil with M. phaseolina and C. acutatum. Trichoderma harzianum occupied the second rank after B. subtilis, Rizolex (15 and 7.4% for DI) for M. phaseolina , (10 and 6.5% for DS)for C. acutatum, T. viride (16 and 16% for DI), (26 and 11% for DS) and Streptomyces canescens (20 and 21% for DI), (25 and 26% for DS), respectively. Moreover; Rizolex gave best results in pathogens control more than Topsin-M fungicide. In field experiment; the effect of soil disinfection using three treatments; two fumigants (Methyl bromide and Agrocelhone) and solar heating solarization applied on two strawberry cultivars (Festival and N-70) during 2015 and 2016 seasons were studied. Soil fumigation with Agrocelhone™ compound and Methyl bromide (MB) led to the best results for soil disinfection on both Festival and N70Strawberry cultivars during two seasons. Percentage DI and DS of crown and root rot diseases occurred were (9.4, 9.0%) and (8.4, 7.5%) for both cultivars, respectively in 2015 it was very low (2.9, 3.0%) and (2.5 and 3.0%); respectively when applied again in 2016.

Survey and Characterization of Strawberry Cultivars Susceptibility to Crown and Root Rot Diseases in Ismailia Governorate, Egypt

Survey and Characterization of Strawberry Cultivars Susceptibility to Crown and Root Rot Diseases in Ismailia Governorate, Egypt

KNOWLEDGE LEVEL OF AGRICULTURAL EXTENSIONISTS IN THE FIELD OF BIOLOGICAL CONTROL IN ISMAILIA GOVERNORATE

The aim of the research were to determine knowledge level ofagricultural Extensionists in the field of Biological Control, identify trainingmethods which preferred by agricultural Extensionists for training in the fieldof Biological Control, identify reasons for farmers 'reluctance to applyBiological Control methods from the point of view of the Extensionists, anddetermining the relationship between the studied variables and the knowledgelevel of the agricultural Extensionists in the field of Biological Control.Research was conducted on a random sample of 95 agricultural Extensionistsin Ismailia Governorate. Data were collected by a questionnaire in January2017, frequency, percentage, weighted average, Pearson's simple correlationcoefficient, Chi square were used to analyse data.The main findings of the research were as follows:1. More than three froths of the respondents (76.8%) of the agriculturalExtensionists did not receive training in the field of Biological Control. 8.4%and 14.7% of them had low and average benefit.2. about four fifths of the respondents (78.9%) had low knowledge ofBiological Control, compared with 4.3% have high level of knowledge.3. Agricultural Extensionists prefer the following methods of training in thefield of Biological Control: field visits, practical demonstration, and seminars.4. Reasons of reluctance of farmers to use the Biological Control from thepoint of view of respondents: Lack of knowledge and information of farmersabout the methods of biological control, lack of requirements for theapplication of biological control, weak shortage of communication challengesbetween research centers and agricultural extension and farmers.5. The most important problems faced respondents in the field of biologicalcontrol were: lack of incentives and rewards, shortage of extension programson Biological Control, lack of extension aids.6. There is a significant relationship between the following variables: age,academic qualification, academic specialization, length of service in extensionwork, training, the degree of job satisfaction, and knowledge level of theextensionists in the field of Biological Control.

PATHOGENICITY OF THE FUNGUS, BEAUVERIA BASSIANA TO THE RED PALM WEEVIL, RHYNCHOPHORUS FERRUGINEUS UNDER FIELD CONDITIONS

The present study was carried out at El-Kassasin district Ismailia Governorate, Egypt to evaluate the virulence of entomopathogenic fungus, Beauveria bassiana against of the red palm weevil under field conditions. Field trials showed that the injection of B. bassiana-9894 in infested palm trees gave successful recovery at light and median infestation level. On the other hand, dusting a date palm trees with B. bassiana-9894 caused an increase in adult weevil infestation and reduction of the palm trees infestation. The obtained results also showed that the chemical insecticides Chlorzan 48% EC and Diazinox 60% EC were highly effective against red palm weevil.

EVALUATION OF SOME ENTOMOPATHOGENS ON THE RED PALM WEEVIL, RHYNCHOPHORUS FERRUGINEUS UNDER LABORATORY AND FIELD CONDITIONS

he present study was carried out at El-Kassasin district Ismailia Governorate, Egypt to evaluate the efficiency of three entomopathogens (Heterorhabditis. bacteriophora- HP-88, Metarhizium anisopliae and Bacillus thuringiensis subsp. Kurstaki ) against of the red palm weevil, Rhynchophorus ferrugineus under laboratory and field conditions. The results revealed that Heterorhabditis bacteriophora-HP-88 was most virulent to the red palm weevil, Rhynchophorus ferrugineus under laboratory conditions. On the other hand, the activity of M. anisopliae and B thuringiensis subsp. Kurstaki against red palm weevil were low. However, field experiments indicated that H. bacteriophora-HP-88, M. anisopliae and B. thuringiensis subsp. kurstaki had no external sign of recovery from the infestation levels

Prevalence of Antibiotic Resistance Genes among E.coli Strains Isolated from Poultry in Suez Canal Area

A total of 200 cases of diseased and recently dead different poultry species (100 broiler chickens, 50 laying hens, 30ducks and 20 turkeys) with the same prevalence from liver, lung and heart blood were collected from different localities in El- Ismailia Governorate. E. coli was isolated from 102(51%) cases. Only representive 10 E. coli isolates were serotyped as O111:K58, O1:K1and O146:K99 in order of frequency (60%, 20%and 20%) of the isolates, respectively. Selected representive 13 E. coli isolates were tested for their susceptibility to 13 antimicrobial agents and absolute resistance was obtained among selected E. coli isolates against amoxicillin clavulanic acid (100%), chloramphenicol (76.9%) and erythromycin (76.9%). In addition, (69.2%) of isolates were resistant to nalidixic acid, rifamycin, streptomycin and cefoxitin and (61.5%) of isolates were resistant to ceftriaxone and all tested isolates were resistant to at least 4 antibiotics and multidrug resistance was seen. The highest sensitivity rates were recorded to ciprofloxacin (84.6%) and colistin sulphate (76.9%). PCR results indicated that representative 10 E .coli isolates hadantibiotic resistance genes as dfrA1, aada1, blaTEM andSul1 genes 100 % (10/10), while only 40 % (4/10) hadfloR gene.

IMPACTS OF CYANOBACTERIA AND BRADYRHIZOBIUM INOCULATION ON LUPINE PLANTS UNDER DIFFERENT NITROGEN RATES IN SANDY SOIL

A field experiment was conducted in sandy soil at Ismailia Agricultural Research Station, (Ismailia Governorate, Egypt, in two successive winter seasons of 2015/2016 and 2016/2017. The experiment aimed to study the response of lupine plants (Lupinus albus L.) variety Giza 2 to cyanobacteria applied with different methods under different nitrogen fertilizer rates and inoculated with rhizobia. Results revealed that application of cyanobacteria generally increased the mean values of nodules number, dry weight of nodules and shoot dry weight of lupine plants, nitrogen uptake, biological activity of the soil rhizosphere lupine plants, yield, yield components and seed protein content as compared to those recorded by the control treatment without cyanobacteria. Increasing nitrogen rates decreased the mean values of both nodules number and dry weight of nodules. On the contrary, increasing nitrogen rate up to 100% of the recommended one increased all the other tested parameters. The highest values of these parameters were recorded when cyanobacteria were applied as dry + soaking combined with 75 % N rate expect for those of number and nodules the dry weight of nodules that gave their highest values when the lupine plants received the treatment of dry + soaking combined with 50 % N rate. In conclusion, the use of cyanobacteria along with rhizobia as renewable nitrogen source for lupine production can save 25% N from that required for lupine.

RESPONSE OF MAIZE PLANTS TO DIFFERENT N-SOURCES AND FOLIAR APPLICATION OF POTASSIUM HUMATE

Two field experiments were conducted at El-Kassasin Farm, Ismailia Governorate, Egypt, (30o 33 ״ 31 ׳ N-30°56 ״ 7 ׳ E, elev. 15.8 m) during the summer seasons of 2014 and 2015 on maize plants (c.v. single hybrid 30K8) grown on a sandy loam soil to study the effect of applying different sources of N-fertilization alone and in combination with foliar application of humate potassium on yield and its components and quality of maize grains. Different sources of N-fertilization caused significant increases in yield and its components and mineral uptake. Meanwhile, application of 50% N- mineral as ammonium sulphate (75kg N fed.-1) +50% organic N (75 kg N fed.-1) (5.3 t compost fed-1) achieved the highest values of all aforementioned parameters followed by the application of 100% of the recommended mineral N (150 kg N/fed.) then 100 % organic N (150 kg N fed.-1) (10.6 t compost fed-1), in a descending order. Spraying maize plants with potassium humate significantly enhanced plant growth, yield and its components as well as N, P and K uptake, total protein and oil in grains. In this respect, spraying plants with 4 L/fed potassium humate attained the superiority impacts comparing the other treatments. Hence, it can be concluded that fertilizing maize plants with 50% N- mineral (75 kg N fed.-1) +50% organic N (75 kg N fed.-1) (5.3 t compost fed-1) in combined with spraying plants at rate 4 L/fed potassium humate gave the highest values of yield and its components and NPK uptake as well as protein and oil content in grains as compared to other interaction treatments.