Hortscience Journal of Suez Canal University

Hortscience Journal of Suez Canal University

Organic Fertilizers Improved Growth and Productivity of Cowpea (Vigna unguiculata (L. ...
Posted on Saturday December 31, 2016

 The effect of three organic fertilizers; viz, chicken manure (ChM, 20 and 40 m3 fed.-1), pressed olive cake(POC, 20 and 40 m3 fed.-1) and cow manure (CwM, 30 and 60 m3 fed.-1) on growth and productivity of cowpea underwater stress condition was investigated. A field experiment was carried out at The Experimental Farm, Fac. Environ.Agric. Sci., Arish Univ., El-Arish, Egypt in summer seasons of 2013 and 2014 in a sandy soil. Irrigation waterrequirements (IWR) were 50% (1050 m3 fed.-1) and 100% (2100 m3 fed.-1) of the estimated crop evapotranspiration.Results showed that20 m3 fed.-1of both ChM and POC were more effective for most vegetative growth parameters andyield components in well irrigated-cowpea in both seasons. Water stressed-cowpeas fertilized by 60 m3 fed.-1 of CwMshowed the lowest reduction in yield (34.07 and 29.86%) in both seasons, respectively, followed by POC fertilizer at 40m3 fed.-1. Water stressed cowpeas fertilized by 40 m3 fed.-1 of POC gave the highest values of water use efficiency (0.86and 0.87 kg m-3). The lowest total consumed water was recorded with 20 and 40 m3 fed.-1 of ChM–fertilized plantsunder normal and drought conditions. The content of biochemical compounds and macro-elements as well asmeasurements of some important tissues in leaflet of 3rd leaf related to drought and organic fertilizers were also studied.It was concluded that application of 20 m3fed.-1 of ChM gave the highest yield in well irrigated-cowpea. Doubledamount of organic fertilizers reduced the deleterious effect of drought especially POC and CwM by saving irrigationwater.

Improving Tomato Productivity under High Temperature Conditions
Posted on Saturday December 31, 2016

Two field experiments were carried out during the summer seasons of 2014 and 2015 at the ExperimentalFarm of the Faculty of Environmental Agricultural Sciences, El-Arish, Arish University, North Sinai Governorate,Egypt to improve the performance of tomato plants (Hybrid Alissa F1) grown under high temperature. This studyincluded 12 treatments which were the combination between application of two types of floating covers (bare plants,covering with Agryl) and spraying with some growth substances to improve the fruit setting under heat stress (control,Ca+B, GA3, IAA, GA3+Ca+B, IAA+Ca+B); Ca, B, GA3, and IAA were used at 500, 25, 20 and 20 ppm, respectively.The results showed that tomato plant growth (both of fresh weight and dry weight) proline concentration, and fruitsetting were increased with application of floating cover (Agryl), while total chlorophyll content, marketable yield perplant and per feddan, total yield/fed. and number of seeds/fruit were decreased. Spraying with IAA,GA3+Ca+B andIAA+Ca+B were the best treatments for total dry weight, total chlorophyll, proline and fruit setting while IAA+Ca+Bwas the best treatment for both marketable yield /plant and per fed., total yield/fed. as well as number of seeds/fed. Thebest interaction treatments for total chlorophyll, the components of marketable yield and number of seeds/fruit werespraying bare plantswithGA3+Ca+Bor IAA+Ca+B, while the same treatments under floating cover increased prolineconcentration in leaves and partially increased average fruit setting (%).

Effects of Deficit Irrigation Strategy and Foliar Application of Salicylic Acid on Growth of ...
Posted on Saturday December 31, 2016

At present, irrigated agriculture will take place under inadequate water incompetency. In this research theinteraction between deficit irrigation (DI) and spraying Jatropha shrubs grown in sandy soil with salicylic acid (SA) tohave a significant impact on increasing its adoption to water-limited areas was studied. Irrigation process included threelevels of water regime, DI. In the first level, soil was irrigated up to full field capacity (0.0-DI), in the second, soil wasirrigated up to 0.65 of full field capacity (0.35-DI), and up to 0.4 of full field capacity for the third level, representing0.60-DI. Also, Jatropha plants were foliar sprayed with three levels of SA as 0.0, 5.0 and 10 mM. SA application at therate of 5 mM enhanced vegetative growth. The optimum treatment on growth characters was found when plantsirrigated with fresh water at 0.35-DI without significant difference with those at 0.0-DI treatments. Also, SA applicationeither at 5.0 or 10.0 mM resulted in negative impact on plant growth, when plants subjected to 0-DI. The obtainedresults indicated that, following 0.35-DI strategy, great amounts of irrigation water could be saved and reachedminimally 206 L plant-1 years-1 at 2nd year (144 m3 feddan -1).

Ex vitro Performance and Genetic Stability of Strawberry Plants Derived from Different in Vitro ...
Posted on Saturday December 31, 2016

Ex vitro experiment was conducted at the greenhouse and nursery facilities of the Plant Tissue CultureLaboratory of Department of Horticulture, Faculty of Agriculture, Suez Canal University during the period 2009-2012.Strawberry ex vitro growth performance of tissue culture-derived plants from different propagation methods (meristem,direct regeneration and callus-derived plants) were examined with standard runner-propagated mother plants based onmorphological traits and genetic analysis using RAPD. Ex vitro growth performance examination showed that leafmorphology and serration patterns were almost similar among plants obtained from meristem, direct or callusregeneration. Tissue culture plants have higher number of runners while standard runner plants were higher in flowerproduction compared with in vitro propagated plants. RAPD analysis indicated that plants of cv. 'Tudla' from thedifferent in vitro propagation methods were genetically stable, while in cv. 'Festival', callus-derived plants deviatedfrom normal genotype. The obtained results confirmed the usefulness of RAPD in determining genetic stability ofplants clonally propagated in vitro as well as detecting the somaclonal variants, which might be used further in breedingprograms.

Influence of Genotype, Salinity, Sulfur Treatments and Planting Container Size on Growth, Yield ...
Posted on Saturday December 31, 2016

A pot experiment was conducted at the Experimental Research Farm, Faculty of Agriculture, Suez CanalUniversity, Ismailia in Fall 2013 till Spring 2014. The experiment included two broccoli genotypes ("Sultan" and"Marathon"), two levels of salinity treatments (0, 100 mM NaCl), two levels of sulfur (0, 3 g/L soil) and two differentsoil volume containers (2, 4 L), in split-split plot design. The objective was to investigate the impact of genotype,salinity, sulfur treatments and container size on plant growth, yield and incidence of gray mold in broccoli. In addition,the effect of propolis extract as a natural mean of disease control was also explored. The results of the experimentrevealed that broccoli genotypes differed in their growth and yield response. Also, salinity treatment adversely affectedthe growth and yield of broccoli in both genotypes and sulfur treatments were not able to mitigate the unfavorableeffects of salinity on broccoli plants. As a result of this experiment, gray mold in broccoli was reported for the firsttime in Egypt and the fungus w a s identified as Botrytis cinerea based on mycological characteristics. Broccoligenotypes showed different disease severity as "Marathon" cv. was highly susceptible, while "Sultan" cv. showedhigher degree of resistance. RAPD analysis identified some specific DNA fragments discriminating between the twogenotypes which can explain the different response of both genotypes for yield and disease incidence. Salinity treatmentsignificantly increased the disease severity by an average of 15.6% and 21.2% when compared to the control for plantsgrown in large and in small culture container, respectively, which demonstrate the effect of container size on the diseaseresponse as the larger size promoted the disease severity. Sulfur application was the most effective treatment indecreasing disease severity by 100% in both genotypes and in both container sizes. In presence of salinity, theinhibitory effect of sulfur sustained in "Sultan" cv., while sulfur decreased the disease severity in "Marathon" cv. onlyby 52.5%. In addition, propolis extract displayed inhibitory effect on Botrytis cinerea growth in both genotypes.Overall, genotypic differences observed for yield and salinity tolerance suggest that breeding programs to enhance suchimportant traits are feasible. Soil-supplied sulfur enhanced broccoli defense to disease and can be suggested as mean ofmanaging nutrition to control plant diseases. Finally, propolis extract can be suggested as a natural mean of gray molddisease control in broccoli.

Growth Responses of Potato Plantlets Cultured In Vitro under Different Colors Light-Emitting ...
Posted on Saturday December 31, 2016

  This exploration work target was to upgrade the micropropagation of potato cultivars through the utilizationof new light sources in the development rooms. The experiment consisted of two potato cultivars (Diamant and agria),and five light sources (white, blue, green and red LEDs; and white fluorescent lights). The explants comprised of nodalsegments containing one bud, segregated from plantlets developed in vitro. The experimental design was completelyrandomized arranged in a 2x5 factorial, with 4 replications. Each experimental unit consisted of a flask with fiveexplants. Three 28-day successive subcultures were done in MS medium and incubated under controlled conditions(temperature = 25+2ºC; photoperiod = 16 hours; light intensity = 20 μmol m-2 s-1). Toward the finish of everysubculture, plantlet length, number of nodes per plantlet, internode length and plantlet fresh weight were assessed. Afterthe second subculture, differences were found among the two potato cultivars developed in vitro: "Agria" performedbetter than "Diamant" in most plantlet growth parameters. Different light sources influenced the potato plantletdevelopment: red and green LEDs were the most and least prescribed for plantlet advancement respectively, in view ofthe after effects of bud number per plantlet, plantlet length. Photosynthetic pigment contents were significantly differentunder the different light treatments. Chlorophyll a, b and carotenoids were higher in plantlets grown under Red, and lessin plantlets under green LED light.

Fruiting of "Keitte" Mango Trees in Relation to Application of Glutathione and Boron
Posted on Saturday December 31, 2016

This study was conducted during 2014 and 2015 seasons to examine the effect of spraying boric acid and/orglutathione each at (0.05 up to 0.1%) three times at monthly intervals starting from the first March, on growth, treenutritional status, yield and fruit quality of "Keitte" mango trees grown under sandy calcareous soil. An obviouspromotion was revealed on all growth aspects, leaves pigments and nutrients content, fruit retention%, yield and fruitquality as affected by the tested treatments. Glutathione was appreciably superior to boric acid in this respect and usingboth together was preferable than using them individually. The promising treatment was the application of boric acidplus the antioxidant glutathione each at 0.1and 0.05%without significant differences among them. Therefore, from theeconomical point of view, it is advised to use this treatment at 0.05%, to obtain acceptable yield and fruit quality of"Keitte" mango trees grown under sandy calcareous soil.


Posted on Thursday January 01, 1970


Posted on Thursday January 01, 1970


Posted on Thursday January 01, 1970