Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Effect of some Natural Material Additives on Growth and Flowering of Tuberose (Polianthes tuberosa, L.) Bulbs8959064089710.21608/jpp.2017.40897ENSamia M. Z.El-BablyHort. Res. Inst., Agric. Res. Center, Giza, EgyptJournal Article20190715Tuberose (<em>Polianthes tuberosa</em>, L.) has a good economic potential for cut flower trade and essential oil industry. A field experiment was conducted at Sakha Horticulture Research Station, Kafr El-Sheikh Governorate, Egypt, during the two successive seasons of 2013/2014 and 2014/2015 to study the effect of some natural materials, i.e. humic acid, yeast and garlic extracts, using two application methods, i.e. soil drench and foliar spray, on some vegetative growth traits, flowering, bulbs and bulblets productivity. The investigation aimed to improve plant quality and raise new formed bulbs and bulblets under local conditions. Results indicated that humic acid treatment followed by yeast then garlic extract significantly increased all traits under study. Soil drench method was superior for vegetative growth, flowering traits, bulbs productivity and chemical constituents compared to the foliar spray one. Application of humic acid as soil drench increased leaf length, number of leaves. Furthermore, it induced precocity in flowering, increased spike and rachis length, number of florets per spike, fresh weight of florets, fresh and dry weights of spike. Also, it significantly increased number of bulblets, fresh weight of clump, fresh weight of new formed bulb and its diameter. Besides, it increased chlorophyll (a) and (b), carbohydrates content, nitrogen, phosphorus and potassium percentage in the leaves compared to untreated plants in both seasons. Therefore, application of humic acid by soil drench method, at the rate of 9 ml/l after three weeks of planting tuberose bulbs, three times with three weeks' interval is important for improving plant quality and raising new formed bulbs and bulblets under local conditions.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Retardation of Rutab Development of "Zaghloul" Dates and Enhancing Bunch Ripening Uniformity by Preharvest Application of Calcium and the Antiethylene Compound 1- Amino Cyclopropene, 1- Mcp.9079114089910.21608/jpp.2017.40899ENK. M.FaragDepartment of Horticulture (Pomology), Faculty of Agriculture, Damanhour University, P.O.Box 22516, Damanhour, Egypt.Neven M. N.NagyDepartment of Horticulture (Pomology), Faculty of Agriculture, Damanhour University, P.O.Box 22516, Damanhour, Egypt.Safaa M.ElnoamHorticulture Research Institute, Egypt.Journal Article20190715Consumption of "Zaghloul" date fruits is highly demanded especially at the bisr stage. Date growers complain about the non-uniformity of the bunch that leads to greater loss of fruits either due to increase abscission prior harvest or deterioration of dates at the rutab stage. This study utilized the antiethlyene-action compound, namely 1-Methylcyclopropene along with calcium near maturity to inhibit the ripening (rutab development) of the dates that already have reached to the bisr stage, while the dates that were still near the end of the kimri stage continued to grow. Dates were preharvest sprayed during the two consecutive seasons 2015 and 2016 to the run off by using a hand sprayer. The treatments included the control (water), 1- MCP at (50 ppm) known as Smart Fresh, as an aqueous spray, CaCl<sub>2</sub> (2%, w/v), glycerol (1 %, v/v), 1-MCP followed by CaCl<sub>2</sub>, 1-MCP followed by CaCl<sub>2</sub> plus glycerol, and finally CaCl<sub>2</sub> plus glycerol at the same above concentrations. The whole bunches of all replications were harvested and sorted for their content of various ripening stages, namely bisr, semi- dry and rutab. The data revealed that almost all fruits were at the bisr stage at harvest time during the two seasons when they were treated first with 1- MCP followed by CaCl<sub>2 </sub>plus glycerol, while the control bunches had significantly lower percentage of bisr dates as compared with the above treatments. Meanwhile, dates treated with 1- MCP followed by CaCl<sub>2</sub> plus glycerol had significantly greater anthocyanin content at harvest than that of the control in both seasons. Furthermore, all 1- MCP- treated fruits had significantly lower leakage of electrolytes than that of the control dates. In conclusion, this study provided a practical evidence for the possibility of utilizing 1- MCP as a mean of enhancing uniformity and delaying the progress towards the ripening of "Zaghloul" dates and extending the bisr stage.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Effect of Silicon Dioxide Nanoparticles on Growth Improvement of Banana Shoots In Vitro within Rooting Stage9139164090010.21608/jpp.2017.40900ENM. E.EL-KadyPomology Department, Faculty of Agriculture, Mansoura University, EgyptM. S.El-BorayPomology Department, Faculty of Agriculture, Mansoura University, EgyptA. M.ShalanPomology Department, Faculty of Agriculture, Mansoura University, EgyptLamiaa M.MohamedPomology Department, Faculty of Agriculture, Mansoura University, EgyptJournal Article20190715Silicon (Si) is considered as one of the most vital elements for the plant life. Nanoparticles interact with plants causing many changes morphologically and physiologically based on the properties of NPs. Nano silicon dioxide (with diameter 20:40 nm) was synthesized from sodium metasilicate and inclusively characterized. Murashige and Skoog media were supplemented with nano SiO<sub>2 </sub>in four levels (0, 50,100 and 150 ppm) in addition to IBA in order to find the interaction mechanism between nanosilica and banana plants under control condition <em>in vitro</em>. The efficiency of Nano SiO<sub>2</sub> was evaluated in terms of its impact on some morphological traits, total chlorophyll content and total phenolic compounds were also assessed. Results showed a positive effect of silicon dioxide nanoparticles on rooting rate and photosynthesis pigments. Overall, application of Silicon in the nano scale was beneficial in improving growth of banana.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Effect of Postharvest- Cold Shock and some Safe Treatments on Carotene Development in "Nova" Tangerines.9179224090110.21608/jpp.2017.40901ENK. M.FaragDepartment of Horticulture (Pomology), Faculty of Agriculture, Damanhour University, P.O.Box 22516, Damanhour, Egypt.Neven M. N.NagyDepartment of Horticulture (Pomology), Faculty of Agriculture, Damanhour University, P.O.Box 22516, Damanhour, Egypt.Journal Article20190715Increasing the carotene density in the peel of "Nova" tangerines, which have been extremely- widely spreaded for their flavor and nutritional value, is demanded by producers and consumers and the most importantly is utilizing natural and safe means to achieve it. In this study, harvested greenish yellow tangerines were exposed during the two consecutive seasons 2014 and 2015 to several treatments such as: - Control (water), cold shock (immersed for 30 minutes at 2<sup>0</sup>C and then incubated at 5<sup>0</sup> C for 6 hours), EDTA, K- EDTA, K<sub>2</sub>SO<sub>4</sub> (all at 0.1 % concentration) and Ethrel at 500 ppm, then all treated tangerine fruits were incubated at ambient temperature 22 ± 2<sup>0</sup>C for three days. The results showed that postharvest- cold shock treatment resulted in lower percentage of weight loss as compared with other treatments. Moreover, this achieved lower percentage of rind electrolyte leakage relative to EDTA and Ethrel treatments. On the contrary, cold shock treated fruits have higher content of vitamin C in comparison with those treated with other applied treatments. In addition, postharvest- cold shock treatment had superior amount of carotene content of tangerine peel as compared with other postharvest treatments.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Influence of Iron Levels and Foliar Application Times on Productivity and Quality of Sugar Beet9239274091010.21608/jpp.2017.40910ENM. E. M.IbrahimSugar Crops Research Institute, Agricultural Research Center, Giza, Egypt.Journal Article20190715A field trial was performed at Tag El-Ezz Research Station, Governorate of Dakahlia, Egypt, in 2015/2016 & 2016/2017 seasons to find out the impact of levels and times of foliar application of iron fertilizer on productivity and quality of sugar beet cv. Sultan. The experiment was arranged in design of strip-plot with three replicates during both seasons. Levels of iron foliar application (untreated "without spraying ", spraying solution of Fe-EDTA at the levels of 500, 750 and 1000 ppm) put in the vertical-plots. The horizontal plots were devoted to five times of foliar application (60, 75, 90, 105 and 120 days after sowing "DFS"). We can summarize the given results as follows:- The greatest averages of all considered traits were achieved when spraying plants with solution of Fe-EDTA (1000 ppm). The second best level of Fe foliar fertilizer was 750 ppm and followed by foliar spraying plants with 500 ppm Fe during both seasons. Adversely, control treatment gave the lowest averages of all considered traits in the two seasons. -Foliar spraying plants with Fe-EDTA after 90 DFS attained the greatest values of all considered traits and followed by spraying with Fe-EDTA after 105 DFS, 120 DFS, then 75 DFS and lastly 60 DFS ranked secondly during the two seasons. It can be concluded that foliar spraying plants of sugar beet with the solution of Fe- EDTA (1000 ppm concentration) after 90 days from sowing to gave the upper limits of yields and quality under climate and nature of agricultural lands in Dakahlia Governorate, Egypt.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Effect of Foliar Application and N-Levels on Productivity and Granis Quality of Barley9299334091210.21608/jpp.2017.40912ENS. E.SeadhAgron. Dept., Fac. of Agric., Mansoura Univ., Egypt.A. T.El-KassabyAgron. Dept., Fac. of Agric., Mansoura Univ., Egypt.M. MansourBarley Res. Dept., Field Crops Res. Inst., Agric. Res. Center, Giza, Egypt.M. M. M.El-WaseefBarley Res. Dept., Field Crops Res. Inst., Agric. Res. Center, Giza, Egypt.Journal Article20190715To study the influence of foliar applications, N-levels and their interaction on growth, yield and its attributes and grain quality of barley Giza 123 cultivar, a field experiments was carried out at the Experimental Farm of Sahl El-Husseiniya, Agriculture Research Station, as a new reclaimed soils (salinity affected soils), during 2015/2016 and 2016/2017 seasons using design of strip-plot with 4 replicates. Vertical plots devoted to five foliar applications <em>i.e. </em>without, spraying with; Macro + Micro, amino acids, humic acid and the combination of Macro + Micro, amino acids and humic acid. Horizontal plots billed to 3 levels of N-fertilizer (40, 60 and 80 kg N/fed). Spraying barley plants with the combination of (Macro + Micro), amino acids and humic acid at the rates of 2 g + 1 ml + 1.25 ml/liter water, respectively in each spraying was the best treatment to increase barley growth, productivity and grains quality, which produced the highest values of these characters, with exception of total carbohydrates % in grains, which had inverse trend into both seasons. Fertilizing plants of barley with 80 kg N per fed gave the uppermost mean values of barley growth, productivity and quality of grains, except carbohydrates % in grains in together seasons. Foliar spraying barley Giza 123 cultivar with Macro + Micro, amino acids and humic acid at the side of fertilizing by 60 kg N per fed in order to maintain high productivity and grains quality and decrease production costs and environmental pollution under salinity affected soils conditions.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Estimate of Genetic Parameters and Correlation Coefficient in Sudan Grass (Sorghum sudanense, (Piper) Staff)9359384091510.21608/jpp.2017.40915ENI. M.AhmedForage Crops Research Department, Field Crops Res. Inst., ARC, Giza, EgyptMagda N.RajabForage Crops Research Department, Field Crops Res. Inst., ARC, Giza, EgyptJournal Article20190715This investigation was laid out during 2013 and 2014 seasons at Sids Agricultural Research Station, Agricultural Research Center, Egypt. The aim of this study were to (1) assess the magnitude of genetic variability parameters and heritability among sixteen exotic genotypes of Sudan grass as compared with two check varieties (Giza 1 and Giza 2) (2) determine correlation among forage yield and its component of Sudan grass genotypes (3) select the appropriate genotype (s) that are suited to Egypt environment. Significant mean squares due to genotypes, years and genotype × year interaction for fresh and dry forage yields at each cut and total yield were observed across the two years. Over the first and second seasons, the genotype IS 3214 was superior and significantly exceeded the check variety (Giza 2) by 6.3% for total fresh forage yield and the genotype IS 720 (Piper) was superior and significantly exceeded the check variety (Giza 1) by 6.6% for total dry forage yield. Tests of significance of mean squares showed significant differences for genotypes, years and genotype × year interaction for most of morphological characters. The genotype of Sudan grass IS 720 (Piper) gave the highest values of number of leaves and leaf /stem ratio while the genotype IS 3214 gave the highest values of number of tillers and leaf/stem ratio. In general phenotypic coefficient of variation (PCV) estimates were higher than genotypic coefficient of variation (GCV) estimates for all the studied characters. Heritability (H<sup>2</sup>%) estimates were generally moderate for some studied characters and recorded values 45.429% for total dry forage yield, 59.083 % for plant height but number of leaves, stem diameter and leaf/stem ratio were low and recorded 5.494, 9.523and 33.333% respectively. Fresh forage yield had high positive and significant correlation with dry forage yield, plant height and number of tillers (r= 0.926<sup>**</sup>, r= 0.613<sup>**</sup> and r=0.998<sup>**</sup>, respectively). Consequently, the genotypes IS 720 (Piper) and IS 3214 deserves further testing before being recommended for commercial use under Egypt conditions<em>. </em>Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Effect of Water Regime and Weed Control Treatments on Weeds, Growth and Yields in Hybrid Rice9399434091810.21608/jpp.2017.40918ENI. H.Abou El-DaragRice Research and Training Centers Sakha, Kafr El-Shiekh, Egypt.S. S. M.Abd El-NabyRice Research and Training Centers Sakha, Kafr El-Shiekh, Egypt.A. M. A.El-GhandorRice Research and Training Centers Sakha, Kafr El-Shiekh, Egypt.Journal Article20190715Two field experiments were conducted at Rice Research and TrainingCenter, Sakha, Kafr El-Sheikh, Egypt during 2015 and 2016 seasons to detect the effect of water regime and weed control treatments on weeds, growth and yields of hybrid rice (Sk2034H). Water regime (4-days on and 6-days off, saturation and continuous flooding) were allocated in main plots while weed control treatments were Thiobencarb 50% EC at three rates; 1.8 , 2.4 and 3.6 kg ai ha<sup>-1 in addition to weedy check were distributed in sub-plots. Weed species and hybrid rice yields were greatly influenced by water regime and weed control treatments<em>. Echinochloa crus-galli</em> and total weeds dry weights were significantly reduced under flooded or saturated plots than under shortage of water (4-days on + 6-days off). In different response, <em>Cyperus difformis </em>considerably reduced under the water shortage than saturated or flooded plots. The highest values of panicles per hill </sup>and grain yield of hybrid rice were recorded under flooding conditions followed by saturated soil. The application of Thiobencarb 50% EC at the high rate (3.6 kg ai h<sup>-1</sup>) resulted in the best weed control and highest grain yield followed by the application of 2.4 kg ai ha<sup>-1</sup> from the same compound, while weedy check plots recorded the highest in weed presence and the lowest in rice yields. For the interaction, the lowest dry weights of <em>Echinochloa crus-galli</em>, <em>Cyperus difformis</em> and total weeds, also the largest weed control efficiency (%), number of panicles per hill and the highest rice grain yields were obtained under flooded plots treated with Thiobencarb at both rates of 2.4 and 3.6 kg ai ha<sup>-1</sup>. This trend was true under all treatments even the weedy check plots except for <em>Cyperus difformis</em> which increased significantly by soil saturation or flooding in un-treated plots.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-36698920170901Impact of Organic, Mineral and Bio-Fertilization on Broccoli9459514092010.21608/jpp.2017.40920ENSamar M. A.DoklegaVeget. and Flori. Dept., Fac. Agric., Mansoura Univ., Egypt.M. A.Abd El-HadyVeget. and Flori. Dept., Fac. Agric., Damietta Univ., Egypt.Journal Article20190715Two field experiments were conducted at the Experimental Station Farm, Faculty of Agriculture, Mansoura University, Egypt, during 2014/2015 and 2015/2016 seasons to estimate the effect of organic (compost and compost tea), mineral (100%, 75% and 50% from recommended dose of NPK) and bio-fertilization (without, mixture of bacteria with fungi and EM) as well as their interactions on growth, yield and quality of broccoli plants. Data which obtained in this experiment indicated that organic treatments gave the highest means of vegetative growth parameters, total yield and quality of broccoli heads were recorded from plants which fertilized with compost compare to compost tea except total carbohydrates and regarding to mineral fertilization, broccoli plants which fertilized with 75% NPK from recommended dose gave the maximum means of all studied characters in both seasons. Moreover bio-fertilizers, the highest values of all parameters were resulted from plants treated with EM followed by bio-fertilizer mixture treatment in both seasons. It could be recommended that fertilization of broccoli plants with compost (4 ton/fed.), 75% NPK from recommended dose and inoculation with EM (10 ml/plant) in would improve broccoli plants productivity and quality.