Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190101Effect of Different Doses of Gamma Irradiation on Vegetative Growth and Oil Yield of Ocimum basilicum L.163619210.21608/jpp.2019.36192ENA. Y.ShalaMedicinal and Aromatic Plants Research Department, Horticulture Research Institute. Agricultural Research Center, Giza, Egypt.Journal Article20181225Gamma irradiation is important agent used to improve the productivity and quality of many plants. The present study was carried out to evaluate the effectiveness of different doses of gamma rays (0, 5, 10, 15, 20, 25, 30 kR) on germination percentage, vegetative growth, photosynthetic pigments, oil yield, oil components and total phenolic content of <em>Ocimum basilicum </em>L during the two successive seasons of 2017 and 2018 at the Experimental Farm of Sakha Horticulture Research Station, Kafr El-Sheikh Governorate, Egypt. Results showed that low doses of gamma irradiation significantly increased germination percentage, plant height, number of branches, fresh and dry weight per plant and per fed, chlorophyll a and chlorophyll b, essential oil percentage, oil yield per plant and per fed and essential oil main components. Increasing gamma rays doses significantly reduced germination percentage, vegetative growth characters and oil yield while total carotenoids content and total phenolic content significantly increased as a defensive effect to the increase in irradiation doses. The study suggested 10kR dose as seeds treatment for increasing basil plants production through enhancing germination percentage, vegetative growth, fresh yield, essential oil yield and essential oil components.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190101Response of Sweet Pepper to Irrigation Intervals and Humic Acid Application7163619310.21608/jpp.2019.36193ENHala A.El-SayedVegetables and Floriculture Department, Faculty of Agriculture, Mansoura University.M. M. B.ShokrHorticulture Research Institute, Agricultural Research Center, Giza.Hemat A. A.ElbauomeVegetables and Floriculture Department, Faculty of Agriculture, Mansoura University.A. K. S. A.ElmorsyVegetables and Floriculture Department, Faculty of Agriculture, Mansoura University.Journal Article20181225Two field experiments were carried out at the private field in El-Hawawsha Village, Dakahlia Governorate, Egypt, during the two successive summer seasons of 2016 and 2017 to study the effect of irrigation intervals, humic acid application and their interaction on growth and productivity of sweet pepper cv. "California wonder". The experiments were carried out in split-plots design with three replications. The obtained results showed that 15 days irrigation interval significantly increased number of leaves/plant, fresh and dry weight/plant, leaf area/plant, yield/plant, total yield, chlorophylls a, b and total chlorophyll of sweet pepper leaves and vitamin C, total soluble solids (TSS %) and acidity of pepper fruits as compared with irrigation at 20 days, which had the lowest significant values. Soil application of humic acid showed significant increases in all studied parameters as compared with control in both seasons. The superior application was soil application of 3 kg humic acid/fed, followed by soil application of 2 kg humic acid/fed, then foliar application of 2 g humic acid/L and foliar application of 1 g humic acid /L in both seasons. The highest values of all the studied characters were resulted from irrigation sweet pepper plants every 15 days combined with soil application with humic acid at the rate of 3 kg/fed in both seasons. Therefore, this treatment can be concluded under the same conditions.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190110Effect of Some Substrates on Production of Oyster Mushroom17203619410.21608/jpp.2019.36194ENHala A.El-SayedHort. Dept., Fac. Agric., Mansoura Univ.A. A.MohamedVeg. Res. Dept. Hort. Res. Inst., Agric. Res. CenterS. R.EldeebHort. Dept., Fac. Agric., Mansoura Univ.Journal Article20190101This research was carried out at the Mushroom Research Laboratory, EL_Kassain Horticulture Research Station, Ismailia Governorate. The research was carried out for two successive seasons, 2016 and 2017. The object of this experiment was to study the effect of some of substrates (rice straw, wheat straw, bean straw, alfalfa hay and pea straw) on physical the yield and its components, of oyster mushroom (<em>Pleurotus florida)</em> fruit bodies. These parameters were measured during the experiment of Cap diameter (cm), Cap weight (gm), fruit body weight (gm), dry matter, early yield (gm), total yield (gm), NPK contents, carbohydrate content and protein content. The results revealed that, there were significant differences in all characters under study, the use of rice straw has achieved the highest results in most of these characters. With regard to chemical constituents of fruit bodies, using rice straw substrate enhanced the percentages of dry matter, phosphorus, potassium and total carbohydrates. On the other hand, the bena straw, pea straw and alfalfa hay were the highest values in nitrogen and crude protein. In generaly the results indicated that, the suitable substrates used for cultivation and production of oyster mushroom was rice straw of the substrate as compared to other substrates.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190110Field Evaluation and Molecular Detection of Allelopathic Potential for Some Rice Genotypes to Improve Weed Management and Grain Yield of Broadcast-Seeded Rice21303619710.21608/jpp.2019.36197ENS. S. M.Abd El-NabyRice Research Dept., Field Crops Research Institute, ARC, EgyptA. M. A.El-GhandorRice Research Dept., Field Crops Research Institute, ARC, EgyptI. A.RamadanRice Research Dept., Field Crops Research Institute, ARC, EgyptSamah M.Abd El-KhalekRice Research Dept., Field Crops Research Institute, ARC, EgyptJournal Article20190101A field study was carried out at the Experimental Farm of Rice Research Dept., Sakha Agricultural Research Station, ARC, Egypt through 2016 and 2017 seasons to study allelopathic activity of selected rice genotypes to integrate with herbicides use under field conditions and to assess genetic diversity using SSR markers linked to allelopathic activity. Six rice entries were used in field study included MBG-41, HHZ-12-SAL8-Y1-Y2, FFZ-1, Weed tolerant-1, Sakha 106 and non-allelopathic check Sakha 101. Pre-mixed herbicide Top Shot 6% OD (penoxsulam 1% + cyhalofop-butyl 5%) was applied at recommended and half doses as compared with un-treated (weedy check) plots. Sakha 106 and Weed tolerant-1 performed the best in weed control, yield and yield attributes in both seasons, while Sakha 101 recorded the highest dry weights of studied weeds and lowest values of rice dry weight as well as grain yield and its attributes during both seasons. The recommended dose of Top Shot 6% OD was the best as compared to either half dose or un-treated plots. Sakha 106 as allelopathic rice cultivar had same behavior under both recommended and half doses of herbicide in controlling grasses, sedges, broad leaves and total weeds, and produced the highest rice dry weight, grain yield and its attributes in both seasons. For molecular study, Rikuto Norin22 was used as identified allelopathic genotype. Four previously identified SSR markers linked to allelopathic activity in rice were used to study genetic diversity among studied rice genotypes. A total number of 13 alleles were generated and number of alleles per locus varied from 2 to 5. Heterozygosity (H<sub>e</sub>)values ranged from 0.490 to 0.735 with an average of 0.607. Polymorphic Information content (PIC) values ranged from 0.37 to 0.685. Genotypes were clustered based on genetic background and allelopathic activity. The results demonstrated the power of SSR markers in detecting molecular diversity as they separated indica from japonica genotypes. SSR 227 was able to detect Weed tolerant-1 and Rikuto Norin22 and Sakha106. This marker could be a potential candidate for MAS-based allelopathic selection. Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190114Influence of Potassium Fertilization Rates and Spraying with Magnesium on Production and Quality of Faba Bean Yield31353619910.21608/jpp.2019.36199ENM. A. A.El-SaidDept. of Agron., Fac. of Agric., Al-Azhar Univ., Assiut, Egypt.A. Y.MahdyDept. of Agron., Fac. of Agric., Al-Azhar Univ., Assiut, Egypt.H. A.AhmedDept. of Agron., Fac. of Agric., Al-Azhar Univ., Assiut, Egypt.Journal Article20190103The objective of this study was to investigate the influence of spraying with magnesium [0, 100 and 150 ppm] and potassium fertilization rates (35, 50 and 65 kg K<sub>2</sub>O /fad.) on <em>Vicia faba,L</em> yield and seeds quality. Two field trials were carried out at the Experimental Farm of Agricultural Res., Center, Al-Azhar University, Assuit Governorate, Egypt during two successive seasons of 2016/2017 and 2017/2018 using faba bean cultivar Giza-843. Split plot design was used with three replicates; where potassium fertilization rates were assigned to the main plot, while spraying with magnesium were distributed randomly in the sub plot. Results revealed that the mean values of no. of branches/plant, no. of pods/plant, 100-seed weight, seed and straw yields/fad. and protein percentage of seeds were increased significantly with increasing rates of potassium fertilizers. The highest values were recorded with using 65 kg K<sub>2</sub>O / fed. Magnesium spraying with increasing application concentration increased from 0, 100 to 150 ppm had significant increased in all studied characters in both season. The interaction between of potassium fertilization and magnesium spraying improved yield and yield components, of faba bean. Therefore, this study recommends that adding potassium fertilization at the rate of 65 kg K<sub>2</sub>O/fad., and spraying with magnesium (150 ppm) in order to improve the production of faba bean under the conditions of Assiut Governorate, Egypt.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190118Effect of Nitrogen Fertilizer on some Flax Varieties under Two different Location Conditions37443620010.21608/jpp.2019.36200ENE. M. A.Abdel-KaderAgronomy Department, Fac. Agric. , Cairo, Al-Azhar University, Nasr city, Cairo, Egypt.A. M. A.MousaFiber Research Dept., Field Crop Res. Institute, Agriculture Research Center, Giza, EgyptJournal Article20190106Two field experiments were carried out at El-Gemmeiza and Sakha Agriculture Research Stations, Gharbia and Kafr El-Sheikh Governorates, Egypt in 2016/2017 and 2017/2018 seasons to study the effect of three nitrogen fertilizer rates (30, 45 and 60 kg/feddan)on four flax varieties(Giza 11,Giza 12, Sakha 5 and Sakha 6) .Results indicated that, fertilized flax Giza 12 variety with nitrogen fertilizer at the rate of 45 kg N /feddan at El-Gemmeiza location yielded the highest values of seed index, seed yield per plant, seed yield per feddan, and oil yield per feddan, on the same line fertilized flax Giza 12 variety with nitrogen fertilizer at the rate of 60 kg N /feddan at El-Gemmeiza location produced the highest values of plant height, fiber length, straw yield per plant, straw yield per feddan and fiber yield per feddan. On the other hand, flax Sakha 6 variety with nitrogen fertilizer at a rate of 60 kg N /feddan at El-Gemmeiza location gave the highest values of number of capsules per plant but flax Sakha 5 variety with nitrogen fertilizer at a rate of 45 kg N /feddan at Sakha location gave the highest values of oil percentage only as compared with all other this interaction treatments in 2016/2017 and 2017/2018 seasons , respectively .Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190123Effect of Sowing Dates and Potassium Fertilizer Rates on Seed Yield of Lima Bean CV. (Phaseolus vulgaris L.)45523620210.21608/jpp.2019.36202ENA. S. M.BadawyForage Crops Res. Sec., Field Crops Res. Institute, ARC. EgyptFatma S.IsmailForage Crops Res. Sec., Field Crops Res. Institute, ARC. EgyptAzza K.SalemForage Crops Res. Sec., Field Crops Res. Institute, ARC. EgyptJournal Article20190115To investigate the effect of sowing dates and potassium fertilizer rates on seeds yield and yield component of lima bean. Two field experiments were conducted at Sakha Agricultural Research Station during 2015 and 2016 summer seasons. Four sowing dates (1<sup>st</sup> May, 15<sup>th</sup> May, 30<sup>th</sup> May and 15<sup>th</sup> June) and potassium fertilizer rates (0, 50, 75, and 100 kg/fed) were used as treatments. The main findings could be summarized as follows:Sowing dates significantly affected seed yield (t/fed), No. of seeds/pod, pod length (cm), No. of pods/plant, pods weight/plant, plant height (cm), stem diameter (cm), No. of branches/plant. Sowing on 1<sup>st</sup> May significantly exceeded all studied traits compared with other sowing dates and produced the highest yield (2.477 t/fed), while the lowest sowing date on 15<sup>th</sup> June. The stem diameter increased with sowing late (1.810 t/fed.).Potassium fertilizer rates significantly affected on seed yield (t/fed), No. of seeds/pod, pod length (cm) , No. of pods/plant, pods weight (t/ fed), plant height (cm), stem diameter (cm), No. of branches/ plant. The results indicated that the highest lima bean seed yield was 2.375 (t/fed) when fertilized with100kg k<sub>2</sub>o/fed and the lowest at control zero fertilizer 1.990 (t/fed).It could be concluded that early sowing on 1<sup>st</sup> May with addition potassium fertilizer rate at 100 kg k<sub>2</sub>o/fed were the recommended treatment to produce the highest seed yield production of lima bean at North Delta under the environmental condition of Kafr EL-Sheikh Governorate.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190127Effect of Nitrogen Rates, Biofertilizers and Foliar Urea Application on Yield and Yield Components of Maize (Zea mays, L.)53583620310.21608/jpp.2019.36203ENA. M.HassaneinDepartment of Agronomy, Faculty of Agriculture, Al Azhar University, Cairo, EgyptE. A. E.MesbahDepartment of Agronomy, Faculty of Agriculture, Al Azhar University, Cairo, EgyptF. H.SolimanField Crops Res. Institute, Agric. Res. Center, Giza, Egypt.T. E.T.El-AidyMinistry of Agriculture and Land Reclamation, EgyptJournal Article20190116Two field experiments were conducted at Bahteem region, Kalubiah Governorate during 2011 and 2012 seasons, to study the effect of three nitrogen rates (40, 60, and 80 kg/fed), biofertilizers (control, without biofertilizer application and Azotobacter + Azospirillum) and foliar spraying with four urea concentrations (0,1.5,2.5 and 3.5%) as well as their interactions on yield and yield components of maize (single cross 30 K8). Results indicated that nitrogen fertilizer rates significantly affected on ear length, number of grains/ears, 100-grain weight and grain yield/fed. in the two seasons. Nitrogen at the rate of 80kg/fed. gave the highest values for all studied traits. Also, results showed that the difference between biofertilizer treatments were significant for all studied traits in the two seasons. Inoculation maize seed with Azotobacter + Azospirillum gave the maximum values for all studied attributes in both seasons compared with the control. In the same trend, results indicated that the differences between urea foliar spraying treatments were significant for all studied traits in the two seasons. Foliar maize plants with 3.5 % concentration gave the highest values for all studied traits compared with other treatments in both seasons. The interactions between nitrogen rates x biofertilizers x foliar treatments with urea were significant for all studied attributes in the two seasons. The results showed that foliar maize plants with 3.5 % urea concentration and inoculation with Azotobacter + Azospirillum as well as fertilized with 80 kg N/fed. gave the highest values for the yield and yield components.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910120190129Effect of some Compounds Spraying on Fruiting of Superior Seedless Grapevines under Assiut Conditions59643620410.21608/jpp.2019.36204ENE. M. A.RadwanHorticultural Dept., Fac. Agric. The New Valley Univ., Egypt.O. A.KhodairHorticulture Dept., Fac. Agric., Al-Azhar Univ., Assiut Branch.A. A. E. M.SilemHorticulture Dept., Fac. Agric., Al-Azhar Univ., Assiut Branch.Journal Article20190120This investigation was carried out during two seasons i.e. 2016 and 2017 on Superior Seedless grapes cultivar grown at the Experimental Orchard, Faculty of Agriculture, Assiut University, Egypt. Ten combined treatments of GA<strong><sub>3</sub></strong>, urea, roselle and active dry yeast spraying at various stage of berry development were evaluated. The experimental vines were arranged in a complete randomized design. From the results of this investigation, it could be concluded that spraying with GA<strong><sub>3</sub></strong> seven times, once at pre-bloom (5 ppm), thrice at full-bloom (5 and 10 ppm) and other thrice when the berry at (6 mm) pea stage (30ppm). In addition , combined spraying GA<strong><sub>3</sub></strong> four times once at pre-bloom and thrice at full-bloom plus 1.5% active dry yeast when the berry at pea stage, as well as roselle at0.2% three times to obtain heavy and less compact cluster and hasten the ripening with fairly good SuperiorSeedless berries quality. In addition, it could be used urea and yeast as well as roselle extract instead of GA<strong><sub>3</sub></strong> in grape production to overcome the adverse GA<strong><sub>3</sub></strong> effects.