Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910520190501Performance of some Wheat Cultivars under Normal and Late Sowing Dates in North Delta3853914314210.21608/jpp.2019.43142ENDalia A.El HagAgronomy Department, Faculty of Agriculture, Kafrelsheikh University Kafr El Sheikh, EgyptJournal Article20190731A field experiments were conducted at Experimental farm Faculty of Agriculture, Kafrelshiekh University, Egypt during 2014/15 and 2015/16 growing seasons. This work was intended to study the effect of late sowing on 30<sup>th</sup> December compared to normal sowing on 20<sup>th</sup> November, on growth, yield and yield components of five bread wheat cultivars i.e Sakha 93, Giza 168, Misr 2, Sids 12 and Giza 171cultivars. The results revealed that mean squares due to planting dates, cultivars and planting dates x cultivars interaction were affected significantly for most of the studied traits. The normal sowing on 20<sup>th</sup> November produced the highest values of studied traits, while late sowing on 30<sup>th</sup>December significantly declined yielding capacity of wheat genotypes. Varietal differences were significant for all traits under investigation. The cultivars Misr 2, Giza 171 and Giza 168 produced highest grain yield in both seasons. In addition, all tested wheat cultivars produced highest grain yield when planted on 20<sup>th</sup> November. Giza 168 recorded the highest values for germination percentage, EC and hectoliter weight, and Giza 171 for protein percentage. While, Sakha 93 recorded the lowest electrical conductivity. It could be concluded that wheat cultivars produced the highest values of traits under sowing on 20<sup>th </sup>November. Misr2 was more susceptible to late sowing date. Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910520190501Assessing Organic Manure Efficiency Versus Mineral Fertilization with and without Mycorrhiza on Yield and Properties of Globe Artichoke (Cynara scolymus L.) Grown on a Clay Alluvial Soil in Egypt Delta3933984314510.21608/jpp.2019.43145ENNahla M.MorsyDepartment of Sustainable Development of Environment and it’s projects Management, Environmental Studies & Research Institute (ESRI), EL-Sadat City University, Egypt.Journal Article20190731A field experiment was conducted for two successive seasons (2015/2016 and 2016/2017) on globe artichoke (<em>Cynara scolymus</em> L.) cv. Fransawy in a randomized complete block, factorial. Factor 1 was manuring (M) treatments of mineral nutrients “ as a reference treatment” “RT” (M1), farmyard manure “FYM” (M2), vermicompost “VC” (M3), chicken manure “CM” (M4) and biogas compost “BC” (M5). Factor 2 was Arbuscular mycorrhiza (A) with treatments of none (A0) and mycorrhiza (A1). Mineral fertilizations (kg ha<sup>-1</sup>) were 124 N+65 P+200 K. Organic fertilization was on basis of applying 124 kg total N ha<sup>-1</sup> of each source with the associated P and K in each. Rates of sources (kg ha<sup>-1</sup>) were 34972.1 FYM, 4124.6 CM, 6887.9 BC and 7614.9 VC (as an average in both seasons). RT gave greater values of number of leaves, number of off-shoots, plant height as well as NPK contents and yield than any of the organic manures with relative yield production efficiency of 80.9, 76.7, 68.2 and 66.7 % for VC, CM, FYM and BC respectively relative to RT. Vesicular Arbuscular Mycorrhizal (VAM) caused increases in all parameters only under conditions of organic manuring.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910520190501Nitrogen Sources and Algae Extract as Candidates for Improving the Growth, Yield and Quality Traits of Broccoli Plants3994074314610.21608/jpp.2019.43146ENA. S.ShamsDepartment of Horticulture, Faculty of Agriculture, Benha University, EgyptNahla M.MorsyDepartment of Sustainable Development of Environment and it’s projects Management, Environmental Studies & Research Institute (ESRI), EL-Sadat City University, Egypt.Journal Article20190731Increasing consumer awareness has contributed in establishing food safety issues and environmental concerns through introducing organic and bio-approaches as substitutes for the traditionally chemical fertilization. However, the efficiency of these fertilizers seemed to be relatively low when compared with the traditional mineral fertilizers. This study postulates that algae extracts of <em>Chlorella</em> <em>sp.</em> might stimulate the growth of plants. To examine this assumption, a field study was conducted for two successive seasons (2015/2016 and 2016/2017) using different N-sources e.g. organic (compost), bio (<em>Azotobacter chroococcum</em> and <em>Azospirillium lipoferum</em>) and mineral (ammonium nitrate) fertilizers with or without algeal extracts of <em>Chlorella</em> <em>sp.</em> to investigate their efficiency for improving the growth parameters and yield components of broccoli plants grown on a sandy loam soil. Results reveal that the highest increases in uptake of NPK were attained for the application of “compost + ammonium nitrate + biofertilizer”. Such improvements resulted in concurrent increases in plant height, number of leaves per plant, leaf area; shoot fresh weight, chlorophyll a and b, curd weight and diameter, vitamin C, TSS, total phenol and antioxidants content in broccoli heads and the outcome head yield. Moreover, the combination between different N-sources and foliar spray of alga extract resulted in further significant increases in NPK uptake by plants and this in turn improved significantly, the abovementioned growth parameters and yield components. Accordingly, our results support the hypothesis indicating that algae extracts improved significantly the growth parameters and yield components of broccoli plants grown on a sandy loam soil.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910520190501The Impact of Compost and Polymers Applications on Potato Plants under Water Stress Conditions: 1- Vegetative Growth and Water Relationships4094164315010.21608/jpp.2019.43150ENE. A. A.TarturaVegetable and Floriculture Department, Faculty of Agriculture, Mansoura University, EgyptA. S.EzzatPotato and Vegetatively propagated Vegetable Research Department, Horticulture Research Institute, Agriculture Research Center, Giza, EgyptZ. Z. S.AhmedVegetable and Floriculture Department, Faculty of Agriculture, Mansoura University, EgyptJournal Article20190731A field experiment was performed using potato (<em>Solanum</em> <em>tuberosum</em> L.; cv. Cara) grown in a private farm at Meet Zonkor village, Talkha, Dakahlia Governorate, to test the influence of water quantities, compost and polymer on growth of potato plants and water relationships under drip irrigation method in 2016 and 2017 summer growing seasons. A strip-split plot design was used with irrigation water quantities (800 "draught stress", 1200 and 1600 m<sup>3</sup>/fed) and the last water quantity is considered as the common water management (control treatment) as main plots, compost (0 and 7.5 ton/fed) and polymer matrix composite (PMC) at the rates of (0, 10, 20, 30 kg/fed) as soil conditioners randomly distributed within sub and strip-plots, respectively. Each treatment was repeated three times. Application of compost or polymer significantly affects the vegetative growth and its water relationships issues compared to control. The mutual interaction of irrigation with 1200 or 1600 m<sup>3</sup>/fed with compost soil amendments (7.5 ton/fed) and polymer (30 kg/fed) had significant effects on most vegetative growth features (plant height, dry weight and leaves area) of potato plants. Moreover, data showed that plant water relationships parameters (relative transpiration rate, RTR and leaf water deficient, LWD) were significantly affected with the highest levels of irrigation water quantity without application of soil conditioners (compost and polymer) in both seasons. Furthermore, including polymer dually with compost under the scarce of water irrigation led to better water use efficiency WUE.Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366910520190501Role of Foliar Applications by some Safety Compounds and Shading in Alleviating the Harmful Impacts of High Temperature on Tomato4174254315210.21608/jpp.2019.43152ENHoda I.AhmedVegetable Res. Dept., Hort. Res. Institute, Agric. Res. Center, Giza, EgyptJournal Article20190731In Egypt, a large number of tomato varieties are grown but most of them lost their potential mainly because of the biotic and abiotic factors. Among these factors, heat stress that is one of the most important determinants of the continuity of the production in the late summer period. The aim of the current study was to assay the role of some treatments in lessening the harmful impacts of high temperatures on production of two commercial hyrids "Alisa F<sub>1</sub>" and "888 hybrid". The study was elaborated in the open field at El-Baramoun farm, Mansoura Horticulture Research Station, Dakahlia governorate during two successive late summer seasons of 2014 and 2015. The experimental design was in split plot included six treatments i.e., naphthaline acetic acid (NAA) at 2.5 ppm, Purshade (CaCO<sub>3</sub>) 1%, Kaoline (Aluminum silicate) 2.5% as foliar spray and intercropping with maize through two levels of shading; shade 2 (intercropping with maize at two meters apart at the same side of ridge planted with tomato; shade 3 (intercropping at three meters apart at the same side of ridge planted with tomato). Significant differences were observed between "Alissa F<sub>1</sub>" and "888 hybrid" tomato hybrids for the majority of studied traits. In general, the mean performance of "888 hybrid" grown under high temperature was better and more tolerant than "Alissa F<sub>1</sub>". In regard to effect of the treatments, both treatments of shade 2 and NAA gave the highest plant height without significant differences between them. Furthermore, NAA at 2.5 ppm gave the great number of branches per plant over the two seasons. In addition, expressive increase in the leaf area was recorded for all treatments in the second season comparing with the first one, however, the shade 3 treatment gave the highest leaf area over the two seasons estimated by 730.87 cm and 772.8 cm, respectively. The treatment of NAA caused a high and significant increase in the total chlorophyll content over the control during the two seasons estimated by 1.15 and 1.72 mg/g, respectively followed by Kaoline treatment. In contrast, a great accumulation of dry weight was observed with the shade 3 treatment that gave 30.03 % and 30.22%, for the first and second season, respectively followed by NAA treatment. Kaoline caused a significant increase in TSS % compared with the control. High vitamin C content was recorded by the NAA treatment with significant differences comparing with the control. Concerning fruit firmness, shade 3 has a significant effect on firmness over the two seasons that estimated by 30.55 and 30.98 inch/cm<sup>2</sup>, for the first and second season, respectively followed by Kaoline and CaCO<sub>3 </sub>treatments. In addition, the foliar application by NAA increased significantly fruit set % that estimated by 13.10 % and 8.83 % for "888 hybrid" and "Alissa F<sub>1</sub>", respectively over the control. Concerning the total fruit yield, the shade 3 treatment recorded an increase estimated by 10.45 and 10.68 ton/fed over the control for "888 hybrid" and "Alissa F<sub>1</sub>", respectively as a mean performance of the two years followed by NAA treatment. According to the previous results, it can recommended under high temperature spraying tomato plants by NAA at 2.5 ppm combined with intercropping with maize at three meters apart at the same side of ridge planted with tomato which enhanced different vegetative growth parameters as well as the quantity and quality of fruit yield.