RESPONSE OF TWO SESAME VARIETIES TO NITROGEN FERTILIZER AND SOME WEED CONTROL TREATMENTS
H.
Rehab
Field Crops Res. Inst., Agric. Res. Center, Giza, Egypt.
author
A.
Fakkar
Weed Central Lab., Agric. Res. Center, Giza, Egypt.
author
text
article
2008
eng
Two field experiments were carried out during 2005 and 2006 growing seasons at the Experimental Farm Shandaweel Research Station, Sohag Governorate, A.R.C., to study the effect of two sesame varieties performance (Toushki-1 and Shandaweel-3), three nitrogen fertilizer (40, 60 and 80 Kg N/fed.) and six weed control treatments (Fusilade super, Fusilade super + Hand hoeing once, Select super, Select super + Hand hoeing once, Hand hoeing twice and unweeded) on sesame yield and associated weeds. The data could be summarized as follows:
The variety of Toushki-1 decreased significantly the dry weight of grassy, broad and total weeds g/m2 by 49.1, 15.2 and 34.1%, respectively compared with Shandaweel-3 in the first season and by 24.0, 6.8 and 13.0% in the second season in this respective. In both seasons sesame varieties differed significantly in all studied characters. Maximum means of plant height, capsule length, fruiting zone length, number of capsules/plant, 1000-seed weight, day to 50% flowering, oil% and seed yield ardab/fed were produced from Toushki-1 variety. While Shandaweel-3 variety produced the lowest means of this traits.
Increasing nitrogen levels from 40 to 80 kg N/fed increased the dry weight of all weeds in both seasons. Increasing nitrogen levels from 40, 60 and 80 kg N/fed significantly increased all characters under investigation. Seed yield/fed increased significantly with increasing nitrogen levels (60 and 80 kg/fed) by (27.3 & 12.5) and (24.5 & 8.1 %) in the first and second seasons, respectively, as compared with the level 40 Kg N/fed.
All weed control treatments reduced the dry weight of weeds as compared with unweeded. Also, all weed treatments surpassed the unweeded in the estimated sesame characters. Hand hoeing twice (30 and 45 DAS), Select super + hand hoeing once and Fusilade super + hand hoeing once increased significantly seed yield (ardab/fed) by 87.5, 72.1 and 48.2 in the 1st season and by 65.6, 54.7 and 33.9% in the 2nd seasons, respectively. Most interactions under this study were significantly for most characters.
From this investigation, sesame plants treated with hand hoeing twice (30 and 45 DAS) and fertilized with 80 kg N/fed. gave the highest seed yield and yield components under sesame Toushki-1 variety.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
1
16
https://jpp.journals.ekb.eg/article_126199_6d760b85f17c9a0567d3ebb79fb510ad.pdf
dx.doi.org/10.21608/jpp.2008.126199
0AMELIORATIVE EFFECTS OF SOME NUTRITIONAL TREATMENTS ON MID-SEASON POOR VEGETATIVE GROWTH AND ITS CONSEQUENT PREMATURE CUT-OUT OF N-STRESSED COTTON PLANT
M.
Kassem
Cotton Research Institute, Agriculture Research Center, Giza
author
Alia
Namich
Cotton Research Institute, Agriculture Research Center, Giza
author
Sanaa
Gebaly
Cotton Research Institute, Agriculture Research Center, Giza
author
text
article
2008
eng
Two field experiments were carried out at Mallawi Agric. Res. Station, EL-Minia Governorate, in 2005 and 2006 seasons. The aim of this investigation was to evaluate effects of some foliar nutritional treatments; Urea (2%), Magic (2%); Nofatrein (1L/fad); and Potassin N (1L/fad) and soil-applied N at rate of 30 kg N/fad on growth and productivity of mid-season poorly grown cotton plants of Giza 83 cultivar. Foliar treatments were applied twice; at early flowering stage and 3 weeks later, while the supplemental soil N were applied as one dose at early flowering stage. A randomized complete block design with four replicates was used. The main findings could be summarized as follows:
The results showed that the supplemental soil-applied N dose was the only treatment which gave a consistently significant increases in leaves content of chlorophyll, plant height, numbers of main stem nodes, fruiting branches, open bolls and total fruiting sites per plant, number of nodes above yellow flower and seed cotton yield per faddan in both seasons but it significantly decreased earliness percentage in comparison with the control in both seasons.
All used foliar treatments significantly increased leaves content of chlorophyll and exerted increases in plant growth and productivity but the significance level was not always reached in comparison with the control. No significant differences were observed among the four foliar treatments used in this study in both seasons.
It could be concluded that supplemental soil N dose of 30 kg N/fad at early flowering stage was more effective in enhancing vegetative growth, delaying cut-out and reducing yield loss of mid-season poorly grown cotton plants as compared with two sprays of any nutritional compound used in this study.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
17
27
https://jpp.journals.ekb.eg/article_126202_86572e315decc9f192bd19bf8174c7d2.pdf
dx.doi.org/10.21608/jpp.2008.126202
RESPONSE OF TWO BARLEY VARIETIES TO MINERAL AND BIOLOGICAL NITROGENOUS FERTILIZER AND WEED CONTROL TREATMENTS.
A.
Nassar
Weed Res., lab., Field Crops Res., Inst., Agric. Res. Center, Giza. Egypt.
author
text
article
2008
eng
Two field experiments were conducted in newly reclaimed land at Ismailia Agriculture Research Station, during the two successive winter seasons 2004/05 and 2005/06. The present research aimed to study the performance of two barley varieties [(Giza126) a hulled variety and (Giza 129) a hull-less barley], two kinds of fertilizer and five weed control treatments and its effect on the fresh weight of broad-leaved, grassy and total annual weeds, yield and yield components of barley.
Results indicated that varieties had no significant effect on the fresh weights of broad - leaved, grassy and total annual weeds at 70 and 100 days after sowing (DAS) in the first and second seasons. Varieties did not differ in plant height or yield and yield components of barley crop in both seasons except for the grain yield in the second season only. Grain yield increase reached around one ardab/fed for Giza 129 a hull-less variety as compared to Giza 126 a hulled variety.
Applying fertilizers affected significantly the fresh weight of annual broad - leaved weed at 70 and 100 days after sowing (DAS) in the first and second seasons, annual grassy weed at 100 (DAS) in the first season and at 70 and 100 (DAS) in the second season as well as total annual weeds at 100 (DAS) in the first and second seasons. Applying, mineral fertilizer 90 kg N/fed without bio-fertilizer gave the highest reduction in the fresh weight of annual broad-leaved weed by 38.7 and 40.8% at 70 and 100 (DAS), respectively, annual grassy weed by 26.4% at 100 (DAS) and total annual weeds by 31.9% at 100 (DAS) as compared to 50 kg N/fed plus mineral fertilizer, 90 kg N/fed plus mineral fertilizer, 70 kg N/fed plus mineral fertilizer and 50 kg N/fed plus mineral fertilizer respectively, in the first season. Also the same treatment gave the highest reduction in the fresh weight of annual broad-leaved weed by 26.4% at 70 (DAS) as compared to 70 kg N/fed plus bio- fertilizer in the second season. While applying mineral fertilizer 70 kg N/fed plus bio-fertilizer gave the highest reduction in the fresh weigh of annual broad – leaved weed by 34.3% at 100 (DAS) as compared to 50 kg N/fed plus bio-fertilizer in the second season. Applying, mineral fertilizer 90 kg N/fed plus bio-fertilizer gave the highest reduction in the fresh weight of annual grassy weed by 31.9 and 46.1% at 70 and 100 (DAS), respectively and total annual weeds by 39.4% as compared to 50 kg N/fed plus bio-fertilizer at100 (DAS) in the second season. Applying fertilizers did not affect plant height or yield and yield components of barley crop in first and second seasons except in the case of grain yield in the first and second seasons. Applying mineral fertilizer 90 kg N/fed plus bio-fertilizer gave the highest increase in grain yield (ardab/fed) by 32.8 and 31.5%, respectively, as compared to 50 kg N/fed plus bio-fertilizer in the first and second seasons.
All herbicidal treatments gave a significant effect on the fresh weights of broad- leaved, grassy and total annual weeds at 70 and 100 (DAS) and gave significant effect on plant height and grain yield and yield components of barley crop in the first and second seasons.
In general, applying tifensulfuron-methyl + metsuluron - methyl (68.2+6.8%) at the rate of 18 g (a.i)/fed followed by clodinafop - propargyl at the rate of 21 g (a.i)/fed was the most effective superior treatment in controlling the fresh weight of total annual weeds 70 (DAS) by 93.6 and 94.9%, respectively, as compared to untreated check in the first and second seasons. Tribenuron - methyl at the rate of 6 g (a.i)/fed followed by clodinafop-propargyl at the rate of 21 g (a.i)/fed was the most superior treatment in decreasing the fresh weight of total annual weeds by 96.2 and 97.6%, respectively, at 100 (DAS) as compared to untreated check in the first and second seasons. Also, applying the same treatment gave the highest increase in yield and yield components in the first and second seasons; thus gave the highest increase in grain yield (ardab/fed) by 144.6 and 164.6%, respectively, as compared to untreated check in the first and second seasons.
In general the interactions between varieties of barley, application fertilizers and weed control treatments had a significant effect in the fresh weights of annual broad - leaved, grassy and total annual weeds while, these interactions did not affect significantly on plant height, yield and yields components of barely except on grain yields in the first and second seasons.
The conclusion of the investigation that applying weed herbicides are the only measure effective in weed control in barley fields depend on weed class of dominant weed species meanwhile, the role of cultivars or fertilizers are not pronounced on weed control under the conditions of this study.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
29
51
https://jpp.journals.ekb.eg/article_126204_4910ac75f3cd374892c4b973ee6e8512.pdf
dx.doi.org/10.21608/jpp.2008.126204
EFFECT OF PLANT DENSITY, PHOSPHORUS AND NITROGEN FERTILIZATION LEVELS ON YIELD AND ITS COMPONENTS OF LUPIN
W.
El- Murshedy
Agron. Dept., Fac. of Agric. Cairo Univ., Giza
author
text
article
2008
eng
Two field experiments were carried out at the Agric. Exp. and Res. Stat., Fac. Agric., Cairo Univ., during 2004/2005 and 2005/2006 seasons to study the effect of three plant densities (33 , 44 and 55 plants/m2), three phosphorus levels (15.5 , 31 and 46.5 kg P2O5/fed) and three nitrogen levels (25 , 40 and 55 kg N/fed) on yield and its components of lupin (Giza 1). The main effects could be summarized as follows:
The results revealed that the lowest density i.e. 33 plants/m2 gave significantly the highest number of branches and pods/plant, seed yield/plant and seed index , but the shortest plants with the fewest number of seeds/ pods and the lowest averages of seed yield/fed and seed protein content.
Increasing phosphorus from level 15.5 to 46.5 kg P2 O5/fed increased yield and its components. The seed yield/fed was increased as applied P2O5 level was increased up to the highest level i.e. 46.5 kg P2 O5/fed. Adding phosphorus at a level of 46.5 kg P2O5/fed increased seed yield/fed over the plants fertilized by 15.5 or 31 kg P2O5/fed levels by 20.23 and 3.89 %, respectively as average of the two seasons.
Increasing nitrogen from 25 to 55 kg N/fed increased all studied components. Application of 40 kg N/fed increased seed yield/fed., over the 25 kg N/fed level by 39.72 % where the further increase of N level caused insignificant increase in seed yield/fed.
The interaction between the three studied factors had significant effects on seed yield/plant and per feddan in both seasons. The highest significant seed yield/fed was recorded from sowing at plant density of 55 plants/m2 and fertilization with 31.0 kg P2O5/fed and 40 kg N/fed.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
53
63
https://jpp.journals.ekb.eg/article_126206_dd29a45f2e0bec258ba5167fadafc259.pdf
dx.doi.org/10.21608/jpp.2008.126206
GENETIC COMPONENTS OF SOME ECONOMIC TRAITS IN COWPEA Vigna unguiculata.
T.
El- Ameen
Department of Genetics, Faculty of Agriculture South Valley University
author
text
article
2008
eng
A half diallel crosses involving eight divergent genetically and morphologically genotypes was used to estimate genetic components of some economic traits in Cowpea. The analyses of the F1 generations and parents revealed that the additive - dominance model of gene action was operating for all studied traits except pod diameter and number of seeds/pod. Both additive and dominance gene effects were important in controlling the variation of all studied traits. The “D” parameter denoring additive variance was larger than the dominance (H1) for flowering, weight of pods, weight of seeds, pod length and number of branches traits. This result confirming the presence of partial dominance, while the “D” parameter was smaller than dominance (H1) for number pods/plant and weight of 100- seeds indicated the presence of over dominance. Narrow sense heritability was high for flowering (0.87), weight of pods/plant (0.80), weight of seeds (0.78) and for weight of 100 seeds(0.76).
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
193
206
https://jpp.journals.ekb.eg/article_126209_0853d29381cd190e214376684a525c7e.pdf
dx.doi.org/10.21608/jpp.2008.126209
USE OF PATHOGENICITY AND PROTEIN ELECTROPHORESIS TO DISTINGUISH ISOLATES OF Macrophomina phaseolina PATHOGENIC ON COTTON
M.
Abdel-Sattar
Dept. of Agric. Bot., Fac. of Agric., Suez Canal Univ., Ismailia, Egypt.
author
A.
Aly
Plant Pathology Research Institute, Agric. Res. Center, Giza, Egypt.
author
M.
Omar
Plant Pathology Research Institute, Agric. Res. Center, Giza, Egypt.
author
text
article
2008
eng
Twenty eight isolates of Macrophomina phaseolina were tested for levels of pathogenicity on 45-day-old greenhouse-grown seedlings of trhee cotton cultivars. Isolate X cultivar interaction was a very highly significant (0.0000) source of variation in infected seedlings suggesting that isolates responded differently to different cultivars. Due to the significance of isolate X cultivar interaction, a least significant difference (LSD) was used to compare between the individual isolate means within cultivars, based on these comparisons, it was easy to differentiate between some of M. phaseolina isolates by their differential pathogenicity on some of the tested cultivars. On the other hand, some isolates were indistinguishable because they showed nonsignificant differences on any of the cultivars. Proteins of the isolates were compared by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Gels were stained with silver nitrate (SN). Cluster analysis of the protein banding patterns by the unweighted pair-group method based on arithmetic means placed the isolates in several groups; however, grouping the isolates was not related to their virulence, geographic origin, or host. Some isolates, which were indistinguishable by pathogenicity test, were easily distinguished by their protein banding patterns. The results of the present study indicate that isolates of M. phaseolina pathogenic on cotton could be identified by their differential pathogenicity on a set of cotton cultivars, combined with their specific protein banding patterns separated by SDS-PAGE and stained with SN.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
207
217
https://jpp.journals.ekb.eg/article_126211_dd52120fb61e0785f16ff01e26199ff1.pdf
dx.doi.org/10.21608/jpp.2008.126211
THE APPLICATION OF PCR IN THE DETECTION OF AFLATOXGENIC ISOLATES OF Aspergillus flavus IN PEANUT
M.
Saleh
Plant Pathology Res. Inst., ARC, Giza, Egypt.
author
Mona
Nour El-Din
Plant Pathology Res. Inst., ARC, Giza, Egypt.
author
text
article
2008
eng
Aflatoxin contamination of peanut seeds , results from growth in kernels by toxigenic strains of the fungus Aspergillus flavus Link. This can occur in the field (Pre-harvest) when severe late - season drought stress occur and during storage (post - harvest) when improper conditions of moisture and temperature exists. Current investigations aims the detecting A. flavus in commercial peanuts production area, moreover, some isolated mycoflora were found to be associated with seeds during (2006-2007) growing seasons. Analyses of 198 seed samples recorded (13.1%) aflatoxin contaminated kernels belonging to 26 samples with aflatoxin detectable levels ranked from (1.6 – 40) ppb. A. flavus total DNA from both toxigenic and non-toxgenic isolates obtained from seeds or soil at five geographic locations was subjected to RAPD technique (random amplified polymorphic DNA). Phonetic and caldistic analyses of the data, based on bootstrap analyses, indicated that the RAPD system was unable to distinguish between aflatoxigenic and non aflatoxigenic A.flavus strains. Therefore, the present study supports the application of that technique for strain characterization and preliminary evolution.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
219
229
https://jpp.journals.ekb.eg/article_126212_4d9ef9ed28cb67d91f782aa37aa7b097.pdf
dx.doi.org/10.21608/jpp.2008.126212
STUDIES ON Fusarium oxysporum DISEASES OF SWEET BASIL PLANTS IN ISMAILIA GOVERNORATE
W.
Shaban
Agric. Botany Dep., Fac. Agric. Suez Canal University
author
text
article
2008
eng
Basil plant is one of the most popular medicinally herbs. Vascular wilt disease caused by Fusarium oxysporum is considering one of the most important diseases on basil in Egypt. Fusarium oxysporum isolates were isolated from all diseased plants showing symptoms of leaf yellowing, stunting, wilted foliage and root rots. All tested isolates of the fungus were found to be pathogenic for basil plants with different degrees. Pathogenicity test with representative isolates indicated that the causal agent is F. oxysporum that causes damping off, wilt, crown and root rot on basil seedlings and plants, where, isolate No.(2) showed more virulent. Under greenhouse conditions and artificial infestation, basil cultivars were differed in their susceptibility to infection by the fungus.Double flowers basil cv. showed more resistant for the disease symptoms, followed by Red leaves cv. Two techniques, vegetative or mycelial compatibility grouping and SDS (PAGE) fingerprinting, were showed differences between Fusarium isolates. Bio-Zeid bioproducts was more effective against Fusarium disease incidence. Also, seed dressing by combining of Vitavax-200 and Rizolex-T showed significant effects in controlling the disease incidence and produced the highest value of healthy plants.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
231
242
https://jpp.journals.ekb.eg/article_126214_65507727632bcc354a78debf4eda9572.pdf
dx.doi.org/10.21608/jpp.2008.126214
INDUCTION OF SYSTEMIC ACQUIRED RESISTANCE OF WHEAT SEEDLINGS AGAINST LEAF RUST DISEASE.
Marian
Thabet
Department of Plant Pathology, Faculty of Agriculture, Ain Shams University, Cairo, Egypt.
author
E.
Gado
Department of Plant Pathology, Faculty of Agriculture, Ain Shams University, Cairo, Egypt.
author
M.
Najeeb
Institute of Plant Pathology, Agricultural Res. Center, Giza, Egypt.
author
S.
El -Deeb
Department of Plant Pathology, Faculty of Agriculture, Ain Shams University, Cairo, Egypt.
author
text
article
2008
eng
Different chemical inducers namely, DL-β-aminobutyric (βABA), salicylic acid (SA) and indole acetic acid (IAA) were used to induce resistance in wheat plants against leaf rust disease caused by Puccinia triticina Eriks under greenhouse conditions. Seedlings were sprayed by different concentrations of inducers at the second leaf stage (14 days old) and challenge inoculation by uredia was carried out at three leaf stage (19 days old).
All concentrations of the tested compound led to significant reduction in infection type and mean number of pustules on both tested wheat varieties i.e. resistant (Giza-168), and susceptible (Sids-1). DL-β-aminobutyric acid at 1000μg/ml gave the best results in controlling leaf rust followed by the higher concentration of indole acetic acid and salicylic acid in descending order. All chemical inducers led to an increase of free phenols in both tested cultivars, but conjugated phenols were increased in the susceptible cv. (Sids-1) and decreased in resistance one (Giza-168).Wheat seedlings treated with βABA or IAA, and then challenge inoculation with Puccinia triticina, showed higher level of peroxidase activity. Meanwhile, the level of peroxidase in the resistant cultivar Giza-168 was higher in seedlings treated with IAA followed by βABA and SA. Cross sections of treated wheat leaves showed higher rate of lignification in the cell walls of xylem vessels due to βABA application as compared to non-treated leaves.
Data revealed that rust incidence was reduced at site of application (2nd leaf), as well as at remote site (3rd leaf). These results proved that these compounds could induce systemic acquired resistance in wheat plants against P.triticina.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
243
256
https://jpp.journals.ekb.eg/article_126216_c081a995e056162dbb2e67ab65d3056e.pdf
dx.doi.org/10.21608/jpp.2008.126216
EFFET OF GROWING MEDIA AND HUMIC ACID ON SCHEFFLERA QUAILTY (Brassaia actinophylla).
Boshra
El-Sayed
Ornamental Plants Dept., Hort. Res. Inst., A. R. C., Giza Egypt
author
S.
El-Shal
Decedious Fruits Dept., Hort. Res. Inst., A. R. C., Giza Egypt
author
text
article
2008
eng
A greenhouse trial was conducted at Horticulture Research Institute, Giza Egypt during 2005 and 2006 seasons to study the separate and the combined effects of different growing media [peatmoss, peat+sand (1:1 by volume) and peat+ sand + clay (1:1:1 by volume)] with the commercial liquid organic fertilizer containing humic acid (actosol®) at four levels [0, 5.0 cm3/L as foliage spray, 10.0 cm3/L as soil drench and 5.0 cm3/L spray + 10.0 cm3/L as drench] on growth and chemical composition of Schefflera (Brassaia actinophylla).
The results showed that the peatmoss was superior than the other media in plant height, number of leaves/plant, stem diameter, fresh and, dry weights of foliage and roots as well as leaves content of N, P, K, Zn, Fe and Mn.
Humic acid treatments revealed significant effect on plant parameter, which reached its maximum due to the use of (actosol®) humic acid as foliage spray plus soil drench.
It could be recommended to use the peatmoss medium and fertilize the plants every two weeks with humic acid [actosol®] at the rate of 5.0cm3/L foliage spray+ 10.0 cm3/L soil drench, to obtain high quality plants.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
371
381
https://jpp.journals.ekb.eg/article_126220_6acd19967df952996c63154b47fdc209.pdf
dx.doi.org/10.21608/jpp.2008.126220
EFFECT OF POTASSIUM FERTILIZATION ON YIELD, FRUIT QUALITY AND LEAF ELEMENTAL CONTENT OF "PEYUAN" BER (Ziziphus mauritiana LAM.) CULTIVAR
M.
Harhash
Plant Production Department., College of Food and Agric. Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
author
R.
Al-Obeed
Plant Production Department., College of Food and Agric. Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
author
text
article
2008
eng
A field experiment was conducted on ten years old "Peyuan" ber (Ziziphus mauritiana Lam.) cultivar during 2005 and 2006 seasons. The trees were grown in loamy sand soil at the Agricultural Research and Experiment Station (Dirab), College of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia. The aim of the present study was to investigate the effect of potassium fertilization at rates of 0, 500, 750, 1000 and 1250 g K2O /tree / year on yield, fruit quality and leaf elemental contents. The obtained results for both seasons revealed that K treatments significantly increased fruit yield. Potassium fertilization significantly increased the average fruit weight, size, length, diameter, flesh weight percentage over the control in 2005 and 2006 seasons. The highest values were obtained with 750 g K2O /tree/year in both seasons. The control trees gave the lowest percentage of fruit grade 1 compared to K treatments in both seasons. However, 750 g K2O /tree/year treatment had a highest percentage of fruit grade 1 (44.53 and 58.03% in both seasons, receptivity) and values of fruit flesh firmness. Treatments of 1000 and 1250 g K2O /tree/year in both seasons, gave the highest values of fruit V.C compared to the control, 500 and 750 g K2O /tree. The acidity percentage in the fruit juice decreased significantly among the potassium treatments in both seasons. The percentage of total soluble solids (TSS), reducing, non–reducing and total sugars followed nearly similar trends as they were affected significantly by potassium treatments in both seasons. Thus, it is obvious that the highest mentioned parameters were found in fruits collected from 750 and 1000 g K2O /tree/year treatments in both seasons. On the other hand, the least values always resulted from control (zero g K2O /tree/year) treatment in both seasons. Generally, applying K at 750 g K2O /tree/year improved yield, fruit quality and nutrient uptake. Thus, such treatment could be the promising treatment for "Peyuan" ber cultivar grown under similar conditions.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
383
391
https://jpp.journals.ekb.eg/article_126230_935ed282532d8807aa2d2a3906c67e3d.pdf
dx.doi.org/10.21608/jpp.2008.126230
ROLE OF ARBUSCULAR MYCORRHIZA (AM) AND YEAST IN IMPROVING QUALITY OF "BLACK MONUKKA" GRAPES
M.
Abd El-Wahab
Viticulture Res. Dept., Hort. Res. Instit., Agric. Res. Center, Giza, Egypt
author
Gh.
Shaker
Viticulture Res. Dept., Hort. Res. Instit., Agric. Res. Center, Giza, Egypt
author
O.
Massoud
Microbiology Res. Dept., SWE Res. Instit., Agric. Res. Center, Giza, Egypt
author
text
article
2008
eng
This investigation was conducted for two successive seasons (2006 & 2007) on mature Black Monukka grapevines to disclose the effect of inoculation with arbuscular mycorrhiza (AM) and different doses of the yeast on improving quality of Black Monukka grapes. The chosen vines were ten-year-old, grown in a sandy loam soil, located at El-Khatatba, Menoufiya governorate; spaced at 2 X 2.5 meters apart and irrigated by the drip irrigation system, cane-pruned and trellised by the double "T" shape system. Eight treatments were applied as follows; control (Uninoculated vines), inoculation with arbuscular mycorrhiza (AM), inoculation with yeast (5g/vine), inoculation with yeast (10 g/vine), inoculation with yeast (15 g/vine), (AM) + (5g yeast/vine), (AM) + (10 g yeast/vine) and (AM) + (15 g yeast/vine).
The results showed that dual inoculation of AM-micorrhizae and fifteen gms of yeast gave the best results in comparison with uninoculated vines. This treatment resulted in the best yield and its components as well as the best physical properties of bunches, improved the physical and chemical characteristics of berries and ensured the best vegetative growth parameters. Dynamics of wood ripening, total chlorophyll and percentages of total nitrogen, phosphorus and potassium of the leaves and total carbohydrates of the canes were also improved. With respect to microbiological activity in the rhizosphere, it was noticed that percentage of infection of AM-micorrhizae, spore numbers of AM-micorrhizae, the populations of total microorganism and yeast populations increased in the rhizosphere as a result of inoculation of AM-mycorrhyzae and yeast.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
393
417
https://jpp.journals.ekb.eg/article_126237_fb2d3ddc218e15c3a27d96fd8f4404b2.pdf
dx.doi.org/10.21608/jpp.2008.126237
LEAF/BUNCH RATIO FOR OREABI DATE PALM CULTIVAR GROWN AT THE NORTH DELTA OF EGYPT
A.
Hegazi
Dept. of Horticulture, Fac. of Agric., Mansoura University.
author
E.
El-Dengawy
Dept. of Horticulture, Fac. of Agric., Mansoura University.
author
Marwa
Hamama
Dept. of Horticulture, Fac. of Agric., Mansoura University.
author
text
article
2008
eng
Date palms of Oreabi cultivar grown at North Delta, near Gamasa, DK. Gov. responded to reducing the number of bunches per palm. A small number of bunches per palm made it possible to select stronger and better located ones on each palm. The nutrients available were used for better fruit-set, higher productivity with good quality fruits.
Pruning the date palms by increasing the number of leaves per bunch significantly increased fruit weight and total yield for the studied cultivar up to 9 or 11 leaves/bunch. Fruit quality was improved as fruit weight and flesh weight were increased while seed weight was reduced by maintaining the proper number of leaves per bunch. The soluble solids content of the fruit (SSC) was also increased.
Leaf/bunch ratio at 11 was the best for the studied cultivar. The problem of heavy fruit drop in Oreabi cultivar and alternate bearing were greatly eliminated by reducing the number of bunches/palm.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
419
424
https://jpp.journals.ekb.eg/article_126241_e58382e54a5b28e25862c919f0a78307.pdf
dx.doi.org/10.21608/jpp.2008.126241
THE INFLUENCE OF SPRAYING WITH ACTIVE YEAST EXTRACT ON VEGETATIVE GROWTH AND VOLATILE OIL OF RIVER RED GUM PLANT (Eucalyptus camaldulensis Dehn. )
Faten
Reda
Department of Forestry and Woody Trees, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt.
author
Maha
Ismail
Department of Forestry and Woody Trees, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt.
author
text
article
2008
eng
The research work presented in this paper was carried out during the two growing seasons of 2005 and 2006 in order to study the influence of foliar application with different levels from active yeast extract (50, 100 and 200 ml/liter) on vegetative growth and volatile oil of River red gum (Eucalyptus camaldulensis Dehn.).
The obtained results indicated that the relatively low used concentration of 50 ml active yeast extract per liter showed no significant effect on vegetative growth characters of River red gum plant, aged nine months, in both studied seasons. On the other hand, the other used concentrations of active yeast extract (100 and 200 ml/L.) induced significant increase in plant height, diameter of the main stem, number of branches per plant, mean leaf area, fresh weight of stems per plant, fresh weight of leaves per plant, biomass of shoot per plant and dry weight of shoot per plant of River red gum in both studied seasons. The maximum increase in this respect was recorded at 200 ml YE/L.
As to the effect on volatile oil, data revealed that the percentage of volatile oil in leaves of River red gum was increased with increasing the concentration of active yeast extract reaching its maximum at 200 ml YE/L. At the same time, all sprayed concentrations of active yeast extract did not affect volatile oil components. However, the percentages of volatile oil components were slightly affected by the tested treatments.
Journal of Plant Production
Mansoura University, Faculty of Agriculture
2090-3669
33
v.
1
no.
2008
425
436
https://jpp.journals.ekb.eg/article_126246_ce7e21d3e534c8811d526a6bf4df7d90.pdf
dx.doi.org/10.21608/jpp.2008.126246