@article { author = {العاني, مؤيد}, title = {EFFECT OF NITROGEN FERTILIZER LEVELS ON GROWTH CHARACTERS OF SIX YELLOW MAIZE GENOTYPES تأثير مستويات السماد النتروجيني على النمو لست تراکيب وراثية من الذرة الشاميةالصفراء}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1089-1097}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51141}, abstract = {أجريت هذه الدراسة في احد الحقول الخاصة في مدينة الرمادي خلال الموسمين الربيعي والخريفي لعام 2013م بهدف دراسة استجابة بعض صفات النمو لستة تراکيب وراثية من الذرة الشامية الصفراء (p-3 و  p-4و IPA 3001وIPA-5012 وبحوث 106 وبحوث 105) للتسميد النتروجيني(170 و 280 و 350) کغم نتروجين/هـکتار، استخدم نظام القطع المنشقة مرة واحدة وفقا لتصميم القطاعات العشوائية الکاملة بثلاث مکررات. ويمکن تلخيص النتائج فيما يلي :- وجود فروقات معنوية في جميع الصفات المدروسة إذ تميز الصنف IPA5012في فترة نموه حيث أعطى أعلى معدل لدليل المساحة الورقية خلال الموسمين, کما وتفوق نفس الصنف الترکيبي IPA5012والهجين الفردي p-4 في الوزن الجاف للنباتفي لکلا الموسمين.  فيما يخص السماد النتروجيني اعطى المستوى 350 کغم نتروجين/هـکتار افضل النتائج لکلا من دليل المساحة الورقية والوزن الجاف للنبات. لذا توصي هذه الدراسة بتسميد الذرة الشامية صنفIPA5012بـ 350 کغم نتروجين/هـکتار للحصول على أفضل صفات للنمو.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_51141.html}, eprint = {https://jpp.journals.ekb.eg/article_51141_503fec440ab2ddf6d8d723bd50bfba7f.pdf} } @article { author = {Mekhiel, E. and Osman, I. and El-Taweel, A.}, title = {EFFECT OF SOME FERTILIZATION TREATMENTS ON GROWTH OF TREES, PRODUCTIVITY AND QUALITY OF GUAVA (Psidium guajava l.) FRUITS CV. "ETMANI". I. UNDER THE CONVENTIONAL FLOOD IRRIGATION SYSTEM.}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1099-1114}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51166}, abstract = {A set of field experiments was conducted in a private orchard at Qalyob district, Qalubia governorate, Egypt during 2012, 2013 and 2014 seasons of 6-years-old uniform trees of guava (Psidium guajava L.) cv. Etmani grown on clay loam soil at 5 x 5 m apart and irrigated with the ordinary flood system to study the response of trees to organic compost at either full, ¾ or ½ the recommended dose (40, 30 and 20 kg/tree, respectively) + feldspar at either full, ¾, ½ or ¼ the recommended dose (1200, 900, 600 and 300 g/tree, respectively) + rock phosphate at either full, ¾, ½ or ¼ the recommended dose (1300, 975, 650 and 325 g/tree, respectively) + mixture of bisofertilizers (Nitropeine + phosphoreine + potasseine at 120, 25 g. and 134 cm./tree, respectively) in 12 combined treatments, besides the control. The obtained results indicated that all fertilization treatments used in this study caused a marked improvement in the means of shoot length, number of leaves/m, leaf area and number of flower buds/m with various significant differences as compared to means of control in the three seasons. A similar trend was also obtained regarding No. of fruits/m, fruit weight, length and diameter, fruit volume, yield and flesh thickness. The percent of TSS was increased in fruits of fertilized trees, while that of acidity was decreased in most cases of the three seasons. So, TSS/acidity ratio was often higher in fruits of treated trees than that in fruits of untreated ones. Moreover, vitamin C content in fruit flesh and fruit firmness were also increased. The leaf content of N, P, K, Ca and Mg was markedly improved as a result of applying fertilization combinations used in such investigation. However, the mastery in most previous parameters was for a combination of 100 % compost + 50 % feldspar + 50 % rock phosphate + bio-fertilizers mixture, which gave the best values in most cases of the three seasons. Accordingly, it can be recommended to fertilize the 6-years-old irrigated trees of guava cv. "Etmani" with the combination of 100 % compost + 50 % feldspar + 50 % rock phosphate plus mixture of biofertilizers to attain the highest growth, yield and fruit quality from commercial point of view.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_51166.html}, eprint = {https://jpp.journals.ekb.eg/article_51166_9c55cf033844092a7c35f44f826c901d.pdf} } @article { author = {Osman, I. and Al-Taweel, A. and Mekhiel, E.}, title = {EFFECT OF SOME FERTILIZATION TREATMENTS ON GROWTH OF TREES, PRODUCTIVITY AND QUALITY OF GUAVA (Psidium guajava l.) FRUITS CV. "ETMANI". II. UNDER FASTING SYSTEM.}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1115-1130}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51176}, abstract = {A series of field experiments was carried out in a private orchard at Qalyob region, Qalubia governorate, Egypt during 2011/12, 2012/13 and 2013/14 seasons for winter production of 9-years-old guava (Psidium guajava L.) cv. "Etmani" trees, planted on clay loam soil at a distance of 5 x 5 m and fasted from April, 1st to July end, beside improving yield and quality of such winter crop by application of organic compost at either full, ¾ or ½ the recommended dose (40, 30 and 20 kg/tree, respectively) + both feldspar and rock phosphate at either full, ¾, ½ or ¼ the recommended dose for each + biofertilizer mixture comprising nitropeine + phosphoreine + potasseine at the recommended dose for each, where all previous compost were arranged in 12 combinations plus the control. The gained results have shown that most fertilization treatments employed in this work raised the means of shoot length, number of leaves/m, leaf area and number of flower buds/m over those of control with various significant levels in the 3 seasons. Similarly, were those results of No. of fruits/m, fruit weight, yield, fruit length, diameter and volume, as well as flesh thickness. The prevalence in all aforenamed characters was for the combination of 75 % compost + 100 % feldspar + 100 % rock phosphate + biofertilizers mixture which gave the utmost high means over control and other combinations in most cases of the three seasons. The percent of TSS was significantly increased in the first season only by 100 % compost + 25 % feldspar + 25 % rock phosphate + biofertilizers mixture combined treatment, but in the 2nd and 3rd seasons, it was slightly improved by the different used combinations with non-significant differences in between or with control. The acidity % exhibited a similar behaviour in the three growing seasons, but the least percent of acidity was found due to the combining between 100 % compost, 25 % feldspar + 25 % rock phosphate and biofertilizer mixture (T4), especially in the 1st and 2nd seasons. In the 3rd season, however, the least acidity % was attained by 75 % compost + 100 % feldspar + 100 % rock phosphate + biofertilizer nixture (T5). So, the best ratio of TSS/acidity was obtained in the first and second seasons by T4, while in the 3rd one by T5. Vitamin C content and flesh thickness were also improved by the used fertilization combinations, but the highest records of them was obtained by different treatment in every season. The percent of N, P, K, Ca and Mg in the leaves of fertilized plants was, in general improved over that of control in the three seasons by the different used treatments, but no one of them had the superior effect over the others. Hence, it can be advised to fertilize the 9-years-old trees of guava cv. "Etmani" grown on clay loam soil at 5 x 5 m apart under Qalubia governorate conditions and fasted from April, 1st to end of July with 75 % of recommended compost dose (30 kg/tree) + 100 % of both feldspar (1.2 kg/tree) and rock phosphate dose (1.3 kg/tree) plus biofertilizer mixture used in this study to get the highest and best quality winter crop from point of commercial and economic view.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_51176.html}, eprint = {https://jpp.journals.ekb.eg/article_51176_c5bc4f9a26f01cdaecaaeadbdb6ad33f.pdf} } @article { author = {Samra,, B. and Arafa, Sally}, title = {EFFECT OF GIBBERELLIC ACID AND ETHEPHON APPLICATIONS ON BERRY COLOR AND QUALITY OF “FLAME SEEDLESS” GRAPES}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1131-1140}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51186}, abstract = {This investigation aimed to evaluate the effect of spraying “Flame Seedless” grapes with gibberellic acid (GA3) and ethephon at 250 ppm when berry size was about 10, 12 and 14 mm on berry color and quality. The present results revealed that spraying “Flame Seedless” grapes with GA3 alone significantly increased cluster weight, berry weight and yield/vine, whereas decreased anthocyanin content and SSC/A ratio in comparison with the control. Moreover, adding ethephon at 250 ppm to the vine which sprayed with GA3 when berry size was about 14 mm significantly increased cluster weight, berry weight and yield/ vine than those treated with ethephon when berry size was about 10 or 12 mm or with GA3 alone. Also, this treatment accelerated harvest date through their its effect on increasing SSC/A ratio in berry juice. Furthermore, vines sprayed with ethephon at 250 ppm when berry size was about 14 mm produced superior color and increased anthocyanin content in berry skin than those sprayed with GA3 alone or the control. It could be concluded that spraying “Flame Seedless” grapes with ethephon at 250 ppm when berry size reached about 14 mm was the suitable date for ethephon application as compared to those sprayed when berry size was about 10 or 12 mm or with GA3 alone.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_51186.html}, eprint = {https://jpp.journals.ekb.eg/article_51186_8c6dab74f41db70055df03f42fefc4db.pdf} } @article { author = {Attia, A. and EL-Moursy, S. and Fatah, O.}, title = {EFFECT OF PRECEDING CROPS, TILLAGE AND WEED CONTROL TREATMENTS ON GROWTH AND ASSOCIATED WEED CHARACTERS OF CORN}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1141-1152}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51196}, abstract = {The field experiment was carried out at the Experimental Station Farm in Agronomy Department, Faculty of Agriculture, MansouraUniversity, during 2014 and 2015 seasons to determine the effect of preceding crops, tillage and weed control treatments as well as their interactions on growth and associated weed characters of corn (Zea mays L.) Single Cross Giza 168 yellow (S.C. 168). Each preceding winter crop (wheat, Egyptian clover and filed bean) treatment was carried out in separate experiment. Every experiment of preceding crop was conducted in strip-plot design with three replications. The obvious results of this investigation can be summarized as follows: Sowing field bean as a preceding crop of corn exceeded other preceding crops and produced the highest values of all studied characters over both seasons. The highest values of corn growth characteristics and the minimum values of fresh and dry weights of total weeds/m2 were achieved by using chisel plow twice. The maximum averages of growth characteristics were achieved as a result of controlling the growing weeds in corn field by hoeing two times before the first and second irrigations (after 21 and 35 days from sowing). Two hoeings treatment more effective than other studied weed control treatments in striving weeds, subsequently significantly decreased fresh and dry weights of total weeds/m2 and produced the lowest values. Finally, it can be concluded that sowing field bean or Egyptian clover as preceding crops before corn and tillage field by using the chisel plow twice besides controlling weeds growing in field by hoeing twice in order to maximize growth at the same time reduce weeds competition under the environmental conditions of Dakahlia Governorate, Egypt.}, keywords = {corn,Maize,Preceding Crops,tillage,Non-tillage,hoeing,herbicides,Growth,Weed Characters}, url = {https://jpp.journals.ekb.eg/article_51196.html}, eprint = {https://jpp.journals.ekb.eg/article_51196_f74911f4c7fd508eb23ce32741f4e8c9.pdf} } @article { author = {El-Sayed, Hala and Eata, A. and Khater, A.}, title = {PHYSIOLOGICAL STUDIES ON EGGPLANT(Solanum melongena l.): DECREASING THE EFFECT OF SALINITY BY SOME FOLIAR APPLICATION SUBSTANCES ON EGGPLANT.}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1153-1168}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51212}, abstract = {Two field experiments were carried out at private farm at El-Gammalia district, Dakahlia Governorate, Egypt;  during summer seasons of 2013 and 2014  to study the effect of some foliar substances, i.e., yeast extract at 20 m/L, proline at 100 ppm, silicon at 200 ppm, ascorbic acid at 250 ppm, salicylic acid at 250 ppm and selenium at 50 ppm on vegetative growth, flowering, fruit yield and its components and quality of eggplant (solanum melongena L.) cv. Black beauty. The results show that foliar applications gave the highest number of leaves and branches,   plant height, fresh and dry weight, leaf area, and stem diameter were obtained in both seasons. Also, treatments resulted the highest in number of flower/plant, number of days to first flowers and the lowest in fruit setting compared with the control in both seasons. Moreover, treatments were the highest in total soluble solids (TSS) and vitamin C (mg/100g fw)  and the lowest in titrable acidity (%) in both seasons. Also, treatments were the highest in N, P and K of leaves and N, P, K, Fe, (No2 + No3) and protein in both seasons.    All foliar applications significantly increased yield characters compared to the control treatment. The superior application was proline followed by yeast extract and silicon in both seasons, respectively.}, keywords = {Eggplant,ascorbic acid,Salicylic acid,silicon,selenium,proline,yeast extract,Growth,flowering,quality and fruit yield}, url = {https://jpp.journals.ekb.eg/article_51212.html}, eprint = {https://jpp.journals.ekb.eg/article_51212_185261dec57a4059bb2d5a229258b166.pdf} } @article { author = {Seadh, S. and Abido, W. and Abdulrahman, D.}, title = {THE ROLE OF FOLIAR APPLICATION IN REDUCING MAIZE NITROGEN REQUIREMENTS}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1169-1181}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51220}, abstract = {In order to determine the effect of foliar fertilization and mineral nitrogen fertilizer levels on growth, yield and its components and grains quality of maize hybrid single cross 131 (SC 131), two field experiments were carried out at the Experimental Station Farm, Faculty of Agriculture, Mansoura University, Egypt, during 2014 and 2015 seasons. To reduce mineral nitrogen requirements by using foliar fertilization treatments as a new trend in fertilizing maize. Each experiment was carried out in a strip-plot design with four replications. The vertical plots were assigned with foliar fertilization treatments. While, the horizontal plots were occupied with three mineral nitrogen fertilizer levels. The results showed that foliar spraying three times with the mixture of GA3 at the rate of 50 ml + AA at the rate of 500 ml + YE at the rate of 2000 ml/200 liter water/fed produced the highest values of all studied characters in both seasons. Maize plants fertilized with 100 of the recommended dose (120 kg N/fed) resulted the highest means of all studied characters in both seasons. It can be concluded that foliar fertilizing maize hybrid SC 131 with the mixture of GA3 at the rate of 50 ml + AA at the rate of 500 ml + YE at the rate of 2000 ml/200 liter water/fed three times after 30, 37 and 44 days from sowing in addition mineral fertilizing with 96 kg N/fed in order to maximize productivity and grains quality and reduce production costs and environmental pollution under the environmental conditions of Dakahlia Governorate, Egypt.}, keywords = {Maize,foliar spraying treatments,Gibberellic acid (GA3),Amino acids (AA),Yeast extract (YE),nitrogen levels,Growth,yield,Grains quality}, url = {https://jpp.journals.ekb.eg/article_51220.html}, eprint = {https://jpp.journals.ekb.eg/article_51220_6be129bcb6d90d030841416430be052a.pdf} } @article { author = {Aboelgoud, Sh. and Mersal, I. and Haggag, M.}, title = {EFFECT OF POTASSIUM FERTILIZER RATES AND SOME PLANT EXTRACTS ON FORAGE, SEED YIELD AND SEED QUALITY OF EGYPTIAN BERSEEM UNDER SALINE SOIL CONDITIONS.}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1183-1198}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51222}, abstract = {Field and Laboratory experiments were conducted at the experimental Farm Station of El-Serw, Damietta Governorate and Seed Technology  Research Unit , Mansoura, during the season of  2013/2014 and 2014/2015,  to study the effect of potassium fertilization rates  e.g. 0, 15 K 30 , 45 kg K2O and foliar spraying of some plant extracts i.e. rose water, mango and orange was used for spraying Berseem plants in each plot at flowering and seed filling stages to study the effect on forage and seed yield of berseem clover cv. Serw 1 as well as seed quality under saline soil condition. The experimental was arranged in strip plot design with three replicates. Potassium fertilizer rates were devoted in the horizontal plot whereas, the water and some plant extracts were assigned in vertical plot. The experimental plot area was 3x4 m2. The results could be summarized  as follows: Adding potassium fertilizer rates in high portion (45 kg K2O) markedly increased green ad dry forage yields when compared with the other portions i.e. 15 and 30 kg K2O. in the first, second and third cut, respectively. The lowest value of green forage yields were observed under the control treatments (without fertilization). The highest number of heads/m2, weight of heads/m2 and no. of seeds/head, straw and seed yield kg/fed increased significantly in the two seasons when plots treated with the high portion of potassium fertilizer rates, while the lowest means of the above mentioned characters were observed in control treatments. In addition, 1000-seed weight, straw yield and seed yield kg/fed didn't reach the significance of differences in the first season. Spraying berseem with water and/or plant extracts achieved the highest mean of significance of differences in the second season for no. of heads/m2, weight of heads/m2, no. of seeds/head and 1000-seed weight , straw and seed yield/fed. when using orange plant extracts. With regard to seed quality, with increasing potassium application seed  and seedlings vigor traits as measured by accelerating aging test,  electrical conductivity of leached seed, seedling length, seedling dry weight and seed vigor index were the best comparing obtained seed from unfertilized plots with potassium. The studied plant extracts had significant effects on germination percentage, electrical conductivity, seedlings dry weight and seed vigor index meanwhile the effect on accelerating test and seedling length was insignificant.}, keywords = {Potassium Fertilizer,Plant extracts,Orange oil,Mango oil,water rose oil,forage and seed yields,seed quality}, url = {https://jpp.journals.ekb.eg/article_51222.html}, eprint = {https://jpp.journals.ekb.eg/article_51222_fe948fd7413eda5a6d67a4b046178cfd.pdf} } @article { author = {Abo EL-Hamd, A. and Ibrahim, M. and Azzaz, N. and Marey, R. and Ibrahim, A.}, title = {EFFECT OF INTERCROPPING OF SOME CHICKPEA VARIETIES WITH ONION UNDER UPPER EGYPT CONDITIONS}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1199-1215}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51233}, abstract = {Two field experiments was carried out under Sohag Governorate conditions during 2010/2011 and 2011/2012 seasons, to study the effect of intercropping three chickpea varieties with onion at four chickpea intercropping systems (onion+2 rows of chickpea, onion+3 rows of chickpea, onion+4 rows of chickpea, onion+5 rows of chickpea and chickpea alone), on yield and yield components of both crops. The obtained results could be summarized as follows: 1- Tallest plants and highest No. of leaves/plant of onion were attained under intercropping with chickpea variety of Giza-4 while the lowest values were obtained under intercropping with chickpea variety Giza- 3, in both seasons. 2- Intercropping onion with five rows of chickpea gave the tallest plants and highest No. of leaves/plant of onion, while intercropping with two rows of chickpea gave the lowest values in both seasons. 3- Giza-3 variety achieved highest total yield/fed and marketable yield/fed of onion, while Giza-2 achieved the lowest values, in both seasons. 4- Intercropping onion with two rows of chickpea produced highest marketable yield/fed and total yield/fed. as compared to other intercropping system, while intercropping with five rows of chickpea produced the lowest values, in both seasons. 5- Giza-4 variety attained highest No. of branches/plant, No. of pods/plant, and seed yield/fed, while Giza-2 attained the lowest values, in both seasons. 6- Maximum seed yields/fed were observed by cultivating chickpea variety Giza-4 or Giza-3 in pure stand, in the first and second seasons, respectively.  7- The highest combination between the two factors in respect to LER was obtained under chickpea variety Giza-3 when intercropped with onion at system of three rows, in both seasons. It could be stated that intercropping chickpes of Giza-3 variety with onion at three rows maximized seed yield per unit area under Sohag Governorate condition.}, keywords = {}, url = {https://jpp.journals.ekb.eg/article_51233.html}, eprint = {https://jpp.journals.ekb.eg/article_51233_8380df47c13a04261d8519544d581780.pdf} } @article { author = {Sadek, Maysa and Abd El-Haleem, R. and Abo- Kaied, H.}, title = {20EVALUATION OF YIELD AND ITS COMPONENTS FOR SIXTEEN FLAX GENOTYPES UNDER NORMAL AND SANDY SOIL CONDITIONS}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1217-1230}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51235}, abstract = {The present investigation was conducted using sixteen flax genotypes, thirteen local lines and three commercial varieties (Giza 8, Sakha 1 and Sakha 3) as check. These sixteen genotypes were evaluated in two successive seasons (2012/2013 and 2013/14) at two locations viz: Giza Exp. Station, Giza Governorate (normal soil) and Ismailia Exp. Station, Ismailia Governorate (sandy soil). The experimental design was randomized complete block with three replications per each of the four environments (combination of locations x years). Mean squares due to genotypes (G) showed highly significant for all characters, indicating the presence of genetic variability among the tested genotypes for all traits under study. Mean squares due to locations (L) differed highly significantly for all traits except no. of seeds per capsule, indicating a wide range of variation between the two locations under study. Mean squares due to GL interaction were comparable in magnitude to those of GY for straw, long fiber yields per fad, plant height, technical stem length, seed yield per fad, oil yield per fad, 1000-seed weight and no. of capsules per plant, indicating that location had the major effect on the relative genotypic potential of these treats. This means that for reliable evaluation of the previous traits it would certainly be necessary to test genotypes in more than multi-location testing. Interaction components variances (σ2gl, σ2gy and σ2gly) were less than the genotypic variance (σ2g) for all characters. This means that genotypes differ in their genetic potential for these traits. This was reflected in high heritability in broad sense and low discrepancy between phenotypic and genotypic coefficients of variability specially for long fiber percentage, plant height, technical stem length, 1000-seed weight, no. of capsules per plant and oil percentage. These results indicating the possibility of using both of plant height and technical stem length as selection indices for improving straw weight per plant and using both of 1000-seed weight and no. of capsules per plant for improving seed weight per plant. S.541-D/10 and S.541-C/3 proved maximum mean performance for straw, long fiber yields per fed, plant height and technical stem length as well as long fiber percentage when compared with the three check varieties, Giza 8, Sakha 1 and Sakha 3. Also, S.541-C/3 and S.541-D/10 exhibited high tolerance to sandy soil conditions for both straw yield per fed and fiber yield per fad. Therefore the two promising lines, S.541-C/3 and S.541-D/10 may be consider good substitutes for the low yielding ones, Giza 8, Sakha 1 and Sakha 3 in future as a new Egyptian flax cultivars for both straw and fiber yields. Also, S.541-C/3, S.541-D/10 and Sakha1 exhibited highest values for seed yield per fad, oil yield per fad, seed weight per plant and 1000-seed weight than other genotypes. It can be concluded that, S.541-D/10 gave high yielding ability for seed yield/fad, oil yield per fad, seed weight per plant and oil percentage with moderate tolerant to drought. Although, the promising flax line S.541-C/3 gave high mean performance for seed yield per fad, oil yield per fad, seed weight per plant and oil percentage but exhibited low tolerant to sandy soil conditions.}, keywords = {Flax,variability,Drought tolerance and susceptibility index}, url = {https://jpp.journals.ekb.eg/article_51235.html}, eprint = {https://jpp.journals.ekb.eg/article_51235_acb3346abcc9c73904b0ecf94d3497ce.pdf} } @article { author = {Hamail, A. and Abd El-Nabi, H. and Tartoura, E. and Abd El-Hady, M.}, title = {EFFECT OF SOIL SALINITY AND SOME ANTIOXIDANTS ON JEW’S MALLOW (Corchorus olitorus L.): 1-VEGETATIVE GROWTH AND QUALITY PARAMETERS}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1231-1245}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51237}, abstract = {Two pot experiments were carried out in the farm of Fac. of Agric.; Mansoura university during the two successive summer seasons of 2008 and 2009, to investigate the effect of soil salinity levels and some antioxidants on plants growth, yield and quality parameters of Jew's mallow (Corchorus olitorius L.) cultivar "Balady". Four treatments of salinity in this study (control, 3000, 6000 and 9000 mg/l) and four antioxidants with three levels for each (ascorbic acid, salicylic acid, proline at; 100, 200 and 300 mg/l and yeast extract at; 1000, 2000 and 3000 mg/l) were used in the foliar way as well as the control treatment (tap water).  The results obtained from this work could be summarized as follow: a)  All vegetative growth parameters under investigation were significantly decreased as the level of soil salinity was increased. b)  Foliar spraying of Jew’s mallow plants with antioxidants significantly increased the mean values of the vegetative growth parameters as compared to the untreated treatment. c) The highest level was most pronounced and associated with the highest mean values for all previously mentioned traits comparing with the first and second level of foliar amendments. d)  Foliar spraying of proline combined with the levels of soil salinity was superior for increasing the values of these parameters following by yeast extracts, ascorbic acid and finally salicylic acid treatment. e) There was a significant decrease as the level of salinity was increased on No2-N and No3-N contents, while ascorbic acid was increased. f)  Both No2-N and No3-N were decreased significantly with antioxidant treatments.}, keywords = {Jew's mallow,Corchorus olitorius,salt stress,Soil salinity,Vegetative growth,quality parameters,antioxidants treatments,growth stages,free NO3}, url = {https://jpp.journals.ekb.eg/article_51237.html}, eprint = {https://jpp.journals.ekb.eg/article_51237_5c8f37a4876c983ab1f12a0cf51cf4ee.pdf} } @article { author = {Abd Eldaiem, M.}, title = {RESPONSE OF SOME FLAX GENOTYPES UNDER DIFFERENT PLANT DENSITIES}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1247-1261}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51239}, abstract = {Appropriate plant densities is a key for maximizing flax productivity due to its main role in fixing energy. Two field experiments were conducted at the Experimental Farm of Gemmeiza Agriculture Research Station, Agricultural Research Center (ARC), Egypt, during the growing seasons of 2011/2012 and 2012/2013 to study the response of some fax genotypes; Sakha 3, Giza 10, strain 22 and Sakha 2 to different plant densities;                1500, 2000, 2500 and 3000 plants/m2 and their effect on seed and long fiber yields and its components. The experiments were carried out in a split-plot design with three replications. The main-plots were assigned to flax genotypes. The sub-plots were allocated to plant densities. The results showed that the studied flax genotypes significantly differed in all studied characters in both seasons, except number of fruiting branches in the first season only. Using flax plant density of 2500 plants/m2 significantly recorded the highest values of all studied characters, followed by flax plant density of 2000 plants/m2, then 1500 plants/m2 and lastly 3000 plants/m2 in both seasons. It could be concluded that planting the genotypes Giza 10 and Strain 22 with plant density 2500 plants/m2 in order to maximize straw and seed yields per feddan. While, for obtaining higher long fiber yield/fed, planting Sakha 3 cultivar with plant density 2500 plants/m2 under the environmental conditions of Gemmeiza district, El-Gharbia Governorate.}, keywords = {Flax,genotypes,cultivars,varieties,plant densities,seeding rates,yields}, url = {https://jpp.journals.ekb.eg/article_51239.html}, eprint = {https://jpp.journals.ekb.eg/article_51239_2d4a065186b790aafdc6447c75ca7531.pdf} } @article { author = {Abd Eldaiem, M.}, title = {RESPONSE OF SOME FLAX GENOTYPES TO LATE SOWING}, journal = {Journal of Plant Production}, volume = {6}, number = {7}, pages = {1263-1275}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3669}, eissn = {2090-374X}, doi = {10.21608/jpp.2015.51242}, abstract = {In order to determine the response of some flax genotypes; Sakha 3, Giza 10, Strain 22, Imported and Sakha 1 under various sowing dates i.e. optimum sowing date (1st November), late sowing (21st November) and very late sowing (15th December), two field experiments were carried out at the Experimental Farm of Gemmeiza Agriculture Research Station, Agricultural Research Center (ARC), Egypt, during 2012/2013 and 2013/2014 seasons. The experiments were carried out in a split-plot design with three replicates. The main-plots were assigned to sowing dates. While, the sub-plots were allocated to flax genotypes. The main obtained results of this study were sowing flax in the first of November produced the highest values of total plant height, technical length, stem diameter, biological yield/fed, straw yield/fed and long fiber yield/fed in both. Sowing flax in 21st November resulted in the highest values of number of fruiting branches, number of capsules/plant, number of seeds/capsule, straw yield/plant, seed yield/plant and seed yield/fed in both seasons. Delay sowing date of flax until 15th December registered the lowest values of total plant height, technical length, stem diameter, number of capsules/plant, straw yield/plant, seed yield/plant, biological yield/fed, straw yield/fed, seed yield/fed and long fiber yield/fed in both seasons. Giza 10 cultivar recorded the highest values of total plant height, technical length, straw yield/plant, biological yield/fed, straw yield/fed and long fiber yield/fed in the two growing seasons. Whereas, Strain 22 genotype produced the highest values of number of fruiting branches, seed yield/plant and seed yield/fed in the two growing seasons. From obtained results, maximum straw yield and long fiber yield/fed and it`s components of flax could be achieved by optimum sowing of Giza 10 cultivar in the first of  November. However, maximum seed yield/fed and it`s components resulted by late sowing Strain 22 genotype in 21st November.}, keywords = {Flax,sowing dates,planting dates,Late sowing,genotypes,cultivars,varieties,yields}, url = {https://jpp.journals.ekb.eg/article_51242.html}, eprint = {https://jpp.journals.ekb.eg/article_51242_4d8f5a036b961e4488fac8bc5a8d0d42.pdf} }