Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
YIELD AND QUALITY OF TWO FLAX VARIETIES AS AFFECTED BY FOLIAR SPRAYING WITH POTASSIN RATES AND NITROGEN LEVELS UNDER SANDY SOIL CONDITION
3937
3952
EN
M.
M. M.
Hussein
Fiber Crops Res. Dept., Field Crops Res. Instit. ARC Giza, Egypt
S.
Z. A.
Zedan
Fiber Crops Res. Dept., Field Crops Res. Instit. ARC Giza, Egypt
10.21608/jpp.2008.166599
Two field experiments were performed at the Experimental Farm, Esmailia Agric. Res. Station Agric. Res. Center, Esmailia Governorate, Egypt during the two growing seasons of 2003/2004 and 2004/2005 to study the influence of foliar spraying of potassin rates at (1 and 1.5 liters potassin/fed.) and the three nitrogen levels of 25, 50 and 75 kg N/fed. on yield, yield components and some technological characters of the two flax varieties Sakha 1 and Sakha 2. Moreover, simple correlation coefficient among straw and seed yields and their components as well as fiber yield and its quality were studied. Results obtained could be summarized as follows:
The flax variety Sakha 1 surpass Sakha 2 in total length, technical length, straw yield/plant as well as per feddan, fiber yield/plant as well as per feddan, fiber length and fiber fineness in both seasons in addition to the combined analysis over them. Fiber percentage had similar trend except with only the second season where Sakha 2 superior over Sakha 1 in this case without significance.
The flax variety Sakha 2 ranked first in no. of fruiting branches, no. of capsules/plant, no. of seeds/capsule, 1000 seed weight, seed yield/plant as well as per feddan, seed oil percentage and oil yield/fed.
Foliar spraying with potassin at the rate of 1.5 liter/fed. achieved maximum mean values of all straw and seed characters under study, except with fiber fineness trait, which recorded highest estimates by spraying with 1 liter, these results were true in both seasons and the combined data.
There was gradual increment in straw and seed yields in addition to their components with increasing nitrogen levels from 25 towards the highest dose at 75 kg N/fed., except with fiber fineness trait which more fine fiber obtained by applying 25 kg N/fed. and more coarse fiber occurred with increasing nitrogen levels towards the highest level.
Straw yield/plant was highly significant and positive correlated with each of total length, technical length, fiber yield/plant, fiber yield/feddan and fiber length. Also, the r values were highly significant and positive between seed yield and either no. of capsules/plant or 1000 seed weight.
https://jpp.journals.ekb.eg/article_166599.html
https://jpp.journals.ekb.eg/article_166599_9e60b0f0bd1122d79f5e6d34beccfb18.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
PERFORMANCE OF SOME KENAF GENOTYPES UNDER DIFFERENT HARVESTING DATES.
3953
3960
EN
Z.
S. A.
Zedan
Field Crops Res. Inst., A R C, Fiber Crops Res. Dept., Giza.
A.
M.
Moussa
Field Crops Res. Inst., A R C, Fiber Crops Res. Dept., Gemmeiza.
10.21608/jpp.2008.166603
This investigation was carried out at Gemmeiza Agricultural Research Station, Gharbia governorate , ARC, Egypt during the two succesive seasons of 2006 and 2007. The aim of this investigation was to study the effect of different harvesting dates i.e.,120 ,150 and 180 days from sowing on the yield and it's related characters among eight Kenaf genotypes.
The kenaf strain 158/2/4 achieved highest estimates for plant height, technical length,fruiting zone length,stem diameter, green stalk yield/plant as well as per faddan and fiber yield/fed., while the commercial variety Giza 3 recorded lowest estimates for these characters previously mentioned. On the other hand, Giza 3 ranked first and surpass all remain kenaf genotypes in seed yield and its components in addition to fiber fineness.
Remarkable increment occurried by delaying harvesting date at the third one (180 days from sowing) for green yield and its related characters, seed yield and its components, in addition to fiber length and fiber percentage. Meanwhile, the second harvesting date (150 days from sowing) performed maximum averages for fiber yield/fed., percentages of either fiber and seed oil. The interaction between kenaf genotypes and harvesting dates had a significant effect on all studied characters.
Key wards: Kenaf, <em>Hibiscus cannabinus</em>,Genotypes, harvesting Dates, Bast fibers, Technical length, fineness, oil percentage.
https://jpp.journals.ekb.eg/article_166603.html
https://jpp.journals.ekb.eg/article_166603_b6650542d04be55717d3a416911253d8.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
YIELD LOSS DUE TO WEED INTERFERENCE AND ECONOMIC EVALUATION FOR WEED CONTROL METHODS IN FABA BEAN AND CHICKPEA CROPS
3963
3976
EN
M.
S.
Mekky
Weed Research Laboratory, FCRI, A.R.C., Giza, Egypt
M.
H. M.
Atwa
Institute of Economic Research, A.R.C, Dokki, Giza, Egypt
10.21608/jpp.2008.166604
Four field experiments were conducted in Sids Agricultural Research Station to study the response of faba bean and chickpea crops to various weed densities as well as the economic feasibility of weed control methods, two experiments for each crop were conducted during 2005/06 and 2006/07 winter seasons.
Both faba bean and chickpea yields were inversely proportional to weed density, the minimum weed density which faba bean and chickpea can tolerated it equal 15 and 10 weeds/m<sup>2</sup> which cause 2 and 3% yield reduction, respectively. Meanwhile, weed density level which exert yield losses exceeded 50% equal 360 weeds/m<sup>2</sup> or 400 plants/m<sup>2</sup> from canary grass in faba bean crop, 210 weeds/m<sup>2</sup> or 250 plant/m<sup>2</sup> from canary grass in chickpea crop, respectively. Economic threshold where the cost of weed control inputs equal financially the gained yield of weed control was at 8, 20, 42 and 9, 22 and 60 (weed density/m<sup>2</sup>), for Fusilade, hand hoeing and Gesagard + Fusilade treatments in the same respective. Depending on these results chickpea considered more susceptible to weed competition than faba bean where the corresponding values of weed density which cause 2%, yield losses or the highest potential yield losses 73 and 100%, respectively.
All weed control treatments either by mechanical or chemical by Gesagard at 1.5 l/fed or Gesagard at 1.5 l/fed pre emergence +Fusilade super at 500 cm<sup>3</sup>/fed post emergence and Gesagard at 1.5 l/fed pre emergence+ Select super at 250 cm<sup>3</sup>/fed. post emergence caused yield increases exceeded the economic threshold levels in faba bean and chickpea crops.
Thus, the estimation of weed density can be used to predict faba bean and chickpea seed yield loss due to weed competition which help in making rationale decisions for weed control by hand hoeing, Gesagard, Gesagard+ Fusilade super or + select super at mentioned rates per feddan, in these crops.
https://jpp.journals.ekb.eg/article_166604.html
https://jpp.journals.ekb.eg/article_166604_7ae0f840c0426bd8debb3fb8bfc81030.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
EFFECT OF SOME PLANT EXTRACTS ON CONTROL OF RHIZOCTONIA DISEASES IN CHICKPEA (Cicer arietinum L.) PLANTS
4077
4088
EN
Ebtehag
El-Barougy
Department of Legume Diseases, Plant Pathology Research Institute, Agricultural Research Institute, Egypt
Manal
Eid
Agricultural Botany, Faculty of Agriculture, Suez Canal University 41522, Ismailia, Egypt
10.21608/jpp.2008.166608
Chickpea (<em>Cicer arietinum</em> L.) is subject to stand injury and yield loss due to several diseases. <em>Rizhoctonia solani</em> found to be pathogenic to Chickpea causing damping-off and root-rot. Chemicals are effective in controlling these diseases but, these chemicals are expensive and not friendly to the environment. There are great efforts to reduce environmental pollution by reducing the dependence on agrochemicals to control plant diseases. Plant extracts and resistant chickpea varieties are used between many other means to control some diseases. Some plant extracts such as Rosemary(<em>Rosemerinus officinalis</em>) leaves and Colocynth (<em>Citrullus colocynthis</em>) fruits inhibited mycelial growth of <em>Rhizoctonia solani </em>on PDAmedium. The results from this study demonstrated that both plant extracts were effective against <em>Rhizoctonia.solani</em> growth. In pots, all tested plant extracts significantly decreased damping-off, and increased healthy plants with corresponding increases of plant height and seed yield weight<strong>. </strong>Reducing sugar decreased whereas, the level of phenols increased in infected plants. In addition to performance of pretreated plants are similar to uninfected control plants, it might be due extracts of both Rosemary and Colocynths which have a role in plants react to pathogen attack by activating an elaborate defense mechanisms. However, the immediate impact of this research is promising in that it provides a safer alternative than synthetic fungicides. Especially, Rosemary extract is often used in food preparations for human consumption; thus there should be a major concern over toxicity.
Chickpea cultivar,Rhizoctonia.solani,natural products,Rosemary Leaves,Colocynth fruits
https://jpp.journals.ekb.eg/article_166608.html
https://jpp.journals.ekb.eg/article_166608_b94c0cc82a796e2509e57d2346732988.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
INFLUENCE OF DIFFERENT PLANT GROWTH REGULATORS ON CALLUS INDUCTION AND FLAVONOID CONTENTS IN ALFALFA (Medicago sativa L.).
4089
4103
EN
M.
K.
Mohamed
Botany Department, Plant Physiology Section, Faculty of Agriculture, Cairo University, Giza, Egypt.
G.
G.
Shehab
Biochemistry Department, Faculty of Agriculture, Cairo University, Giza, Egypt.
Abeer
A.
Mahmoud
Botany Department, Plant Physiology Section, Faculty of Agriculture, Cairo University, Giza, Egypt.
Alia
A.
Amer
Plant Biotechnology Research Lab, Faculty of Agriculture, Cairo University, Giza, Egypt.
10.21608/jpp.2008.166612
Alfalfa contains many important substances including flavonoids which play many diverse roles in plant. Alfalfa callus was induced on media containing 6- benzyl aminopurin (BA), α -Naphthalene acetic acid (NAA), 2, 4 Dichloro phenoxy acetic acid (2, 4-D) and kinetin. The best callus formation was obtained from the medium of 2 mgl<sup>-1</sup> 2, 4- D + 1.5 mgl<sup>-1</sup> Kinetin; leaf was the best organ of alfalfa in production of fresh weight. The 2<sup>nd</sup> subculture was higher in growth characters and flavonoids production as compared to the 1<sup>st</sup> subculture. Flavonoid concentration was higher in shoot tip of 1<sup>st</sup> subculture and leaves in the 2<sup>nd</sup> subculture.
alfalfa,Callus,Plant growth regulators,flavonoid
https://jpp.journals.ekb.eg/article_166612.html
https://jpp.journals.ekb.eg/article_166612_1e70bffd2f8ed23ae17eeeea52e07037.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
ROLE OF Pseudomonas fluorescens IN INDUCED SYSTEMIC RESISTANCE FOR TOMATO VASCULAR WILT DISEASE CAUSED BY Fusarium oxysporum F. SP. LYCOPERSICI
4145
4158
EN
H.
M.
El-Zahaby
Agricultural Botany Department, Fac. of Agric., Tanta Univ., 31527 Egypt.
10.21608/jpp.2008.166614
Using an isolate of <em>Pseudomonas fluorescens</em> (<em>Pf</em>) in biological control was found to protect tomato plants from vascular wilt disease caused by <em>Fusarium oxysporum</em> f. sp. <em>lycopersici</em> (<em>Fol</em>). In spite of the <em>In vitro</em> partially inhibition effect of <em>Pf</em> on mycelial growth of <em>Fol</em> by 47%, it found that <em>Pf</em> treatment one week before inoculation can decrease the diseases severity in tomato plants by 87%. These results indicating that systemic protection offered to tomato roots by the <em>Pf</em> for vascular wilt disease caused by <em>Pol</em> infection and explaining that ISR is involved.
Induction of defense enzymes by <em>Pf</em> against challenge inoculation with <em>Fol</em> in tomato was studied. Activities of phenylalanine ammonia-lyase (PAL), peroxidase (POX) and polyphenol oxidase (PPO) increased in bacterized tomato root tissues challenged with the pathogen. Analysis revealed that a PAL, POX and PPO were expressed at higher levels in bacterized tomato root tissues challenge inoculated with the pathogen. Activities of PAL and POX reached maximum at the 4<sup>th</sup> day while, activity of PPO reached maximum at the 6<sup>th</sup> day after challenge inoculation. Induction of these enzymes activities was found, not only in <em>Pf</em> treated root tissues challenged with the pathogen, but also in roots treated with <em>Pf</em> alone. These results suggest that induction of defense enzymes involved in phenylpropanoid pathway might have contributed to restriction of invasion of <em>Fol</em> in tomato plants.
Fusarium oxysporum f. sp. lycopersici,induced systemic resistance,Lycopersicum esculentum,plant growth-promoting rhizobacteria,Pseudomonas fluorescens
https://jpp.journals.ekb.eg/article_166614.html
https://jpp.journals.ekb.eg/article_166614_9f8774ec5979354a4e929fe3fd0005c2.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
EFFECT OF DETERGENT - POLLUTED WATER ON THE HEALTH OF TOMATO PLANTS.
4159
4170
EN
M.
G.
Hassouna
Department of Plant Pathology, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.
S.
S.
Aboshosha
Department of Plant Pathology, Faculty of Agriculture, Alexandria University, Alexandria, Egypt
S.
A.
Soliman
Department of Pesticides, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.
M.
S.
Al-Dahmashi
Department of Plant Pathology, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.
10.21608/jpp.2008.166620
The effect of detergent-polluted water (DPW) at the concentrations 0.52, 1.05, 2.10, and 4.20 g l<sup>-1</sup> (the recommended) on the growth of tomato plants was assayed. Seed germination and seedling length were increased with the two lower concentrations 0.52 and 1.05 g l<sup>-1</sup> , and decreased with 2.10 and 4.20 g l<sup>-1 </sup>(DPW) concentration. The growing seedlings and plants were dwarfed, malformed and brownish with the increase of the detergent concentration. The two higher concentrations reduced the dry weights of root by 25 and 81 % and the shoot by 11-57 %. The number of surviving plants, and chlorophyll contents were also decreased . Carotene at 5-leaves stage was decreased by 13 and 25%, and slightly increased at the 8-leaves stage with the 0.52 g l<sup>-1</sup> (DPW) concentration and fluctuated around the control treatment at the flowering stage. The total soluble proteins of roots and shoots were clearly increased with the two lower concentrations, and sharply decreased by 24 and 50 % with the 2.10 and 4.20 g l<sup>-1</sup> concentrations, respectively. The protein pattern showed changes, (as compared with the control plant proteins), where new and missed proteins bands were detected, at each detergent concentration. All these changes are related to the changes observed on the growth and health of tomato plants.
detergent,Tomato,Growth,Chlorophyll,Carotenes,Protein, water pollution
https://jpp.journals.ekb.eg/article_166620.html
https://jpp.journals.ekb.eg/article_166620_c6af2a7d979f4cd8247f8c3121b900ec.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
PHYSIOLOGICAL EFFECT OF SOME BIOREGULATORS ON WHEAT PLANTS GROWN UNDER SALT STRESS
4171
4183
EN
I.
Z.
El-Shamey
Department of Agricultural Botany, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
10.21608/jpp.2008.166723
Wheat plants (<em>Triticm aestirvum</em> L.cv. Sakha 8) were treated with some bioregulators (proline 10& 20ppm) , Salicylic acid (50 & 100 ppm) and paclobutrazol (25ppm) ) with three salinity levels (0, 1000and 6000 ppm NaCl).
The results showed that, without bioregulators application, increasing NaCl levels increased root / shoot ratio to be 5 fold at 6000 ppm higher than control treatment. Adding the bioregulators obviously decreased the root/ shoot ratio under salt stress. Similar trend was detected for the grains yield (g) plant<sup>-1</sup> at harvest stage. Whereas, the highest level of salinity caused a decrease of grain yield (g) plant<sup>-1</sup> around 14 times lower than that obtained from control treatment. Meanwhile the bioregulator treatments reduces the harmful effect of salinity on grain yield (g) plant<sup>-1</sup>. Paclobutrazol gave the best positive effect under the highest salinity level but proline at 20 ppm concentration gave the lowest positive effect on the grain yield (g) plant<sup>-1</sup> under the highest salinity level. Some physiological parameters such as total chlorophyll, total soluble sugars , free amino acids , indoles , phenols , proline, K and Na contents in leaves were tested as a physiological markers of wheat plants grown under salt stress. The results showed that, the K/Na ratio and indole content in leaves could be used as physiological markers for wheat plants grown under salt stress.
https://jpp.journals.ekb.eg/article_166723.html
https://jpp.journals.ekb.eg/article_166723_dc827d617ff1c72a03cd03806f492340.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
COUNTERACTION OF SALT STRESSED BARLEY ON SANDY SOIL BY PLANT GROWTH REGULATORS
4185
4194
EN
I.
Z.
El-Shamey
Department of Agricultural Botany, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
10.21608/jpp.2008.166725
Greenhouse experiment were conducted on two barley varieties (Giza 123 (salt tolerance) and Giza 125 (salt sensitive)) . Plants were treated with 25, 50 ppm paclobutrazol (PP<sub>333</sub>) or 10 ppm abscisic acid (ABA) as foliar spray 3 weeks after sowing date. Four levels of NaCl salinity (0, 2500, 5000, 10000 ppm) were used two days after plant growth regulator treatments. The results indicated that, the harmful effect of salt stress was more clear on variety Giza 125 than that found on variety Giza 123. Where, the decrease of plant height and shoot fresh weight by the highest NaCl level were obvious as compared with control treatment. The reduction of two parameters reached 40% and 69% in Giza 123 as well as 66% and 81% in Giza 125, respectively. However, treatment of plant growth regulators significantly reduced the injury effect of salt stress. The ABA treatment had a better effect than that obtained by paclobutrazol ones. Also, the negative effect of salt stress on grain yield was significantly improved by application of plant growth regulators. However, regression analysis between grain yield and some chemical constituents in barley leaves, illustrated that, the K/Na ratio in barley leaves had the highest R<sup>2</sup> value (0.88) with grain yield whereas R<sup>2</sup> values of chlorophyll and proline contents in leaves gave 0.33 and 0.71 respectively. So, the negative effect of salinity on barley may occurr due to decrease of K uptake and increasing of Na uptake. Consequently K/Na ratio was decreased. So improving of barley growth and yield could be achieved by ABA application. This work aimed to determine the best physiological parameter related to salt stress in barley plants may be due to the rebalance of K/Na ratio in leaves.
https://jpp.journals.ekb.eg/article_166725.html
https://jpp.journals.ekb.eg/article_166725_2345644fea7a4fdabe5844c55846a5c7.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
EVALUATION OF GRAFTING COMPATIBILITY AND GROWTH OF SOME NEW ORANGE CULTIVARS BUDDED ON VOLKAMER LEMON
4359
4367
EN
B.
N.
Samra
Pomology Dept., Fac. of Agric., Mansoura Univ.
10.21608/jpp.2008.166729
The present study was undertaken during the seasons of 2005/2006 and 2006/2007 to evaluate the degree of grafting compatibility, budding success percentage and seedling growth of some new orange cultivars namely; Navelina, New hall, Navelate and Washington Navel and Valencia oranges budded on Volkamer lemon.
The obtained results reveal that, budded Valencia orange on Volkamer lemon gave a higher percentage of graftage success than those obtained from the other orange cultivars under study. Furthermore, budding New hall or Navelate on the same rootstock gave vigorous seedling with higher shoot length, thickness, number of leaves and leaf area than those obtained from Navelina orange. Whereas, budding Valencia orange on Volkamer lemon gave a taller seedling than those obtained from Washington Navel orange.
In this respect, budding New hall or Navelate on Volkamer lemon presented a good seedling than obtained from Valencia, Washington Navel orange and Navelina orange which presented a lower seedling growth.
https://jpp.journals.ekb.eg/article_166729.html
https://jpp.journals.ekb.eg/article_166729_eeabb84f0a47af701f6615187f75cb5c.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
EFFECT OF DIFFERENT SOURCES OF ORGANIC FERTILIZERS AS A PARTIAL SUBSTITUTE FOR MINERAL NITROGEN FERTILIZER OF WILLIAMS BANANA
4369
4381
EN
A.
S.
Hosam El-Dein
Hort. Res. Ins., Agric. Res. Center, Giza, Egypt.
E.
S.
Boshra
Hort. Res. Ins., Agric. Res. Center, Giza, Egypt.
10.21608/jpp.2008.166736
This investigation was undertaken for two seasons 2005/2006 and 2006/2007 on Williams cultivar grown in loamy soil in a private orchard at Badaway, near Mansoura, Dakahlia governorate. Treatments included in the experiment were : the recommended nitrogen rate in the mineral form (ammonium nitrate 33 % N) as the control, 50 % mineral N + 50 % town refuse, 25 % mineral N + 75 % town refuse, 50 % mineral N + 50 % cattle manure and 25 % mineral N + 75 % cattle manure. Pseudostem length, circumference, suckers length, circumference, number of green leaves/ plant, finger length, diameter, size, weight, percentage of pulp, weight of bunch and hand, chlorophylls A and B in the finger peel, total carbohydrates, nitrate and nitrite in finger pulp and leaf mineral content (NPK) were monitored each season (2005/06 and 2006/07).
The application of nitrogen requirements in the form of organic manure (cattle manure followed by town refuse at 75 % + 25 % mineral N) gave a good results in respect to the most of studied characters in comparison with the treatments which received the amount of nitrogen from mineral source only. Generally, increasing the rates of organic manure up to 75 % + 25 % mineral N, the obtained results were improved particularly the yield, fruit quality and vegetative properties.
The highest nitrate and nitrite residues in the finger pulp were observed in mineral N fertilization alone, whereas the lowest values were gained from compost treatments (organic manure).
https://jpp.journals.ekb.eg/article_166736.html
https://jpp.journals.ekb.eg/article_166736_97dc48008b51c6c2d47ef249f5868744.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
EVALUATION OF SOME CITRUS ROOTSTOCKS FOR "HERNANDINA" CLEMENTINE IN A HIGH-DENSITY PLANTING
4383
4395
EN
M.
A.
Bassal
Horticulture Department, Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt,
magdy_bassal@yahoo.com
10.21608/jpp.2008.166739
Vegetative growth, yield and fruit quality of "Hernandina" clementine (as newly introduced cultivar in Egypt) grafted on Sour orange (the most common rootstock), Cleopatra mandarin, Carrizo citrange and "Swingle" citrumelo were evaluated in a private farm at "Wady El-Mullak" region, Ismailia Governorate during 2004/2005 and 2005/2006 seasons.
"Hernandina" clementine trees budded on Carrizo citrange showed higher vegetative growth parameters (canopy circumference and diameter, tree volume) than those on Sour orange, "Swingle" citrumelo and Cleopatra mandarin rootstocks, except the tree height which was similar to those on other rootstocks (except Sour orange which was significantly lower). The highest affinity was found with Sour orange, followed by Cleopatra mandarin and Carrizo citrange without significant differences among them, while the lowest affinity was found with "Swingle" citrumelo.
Trees on Carrizo citrange produced higher yield than those on Sour orange, Cleopatra mandarin and "Swingle" citrumelo rootstocks. The trees grafted on Carrizo citrange had the highest average yield of the two seasons (29.51%, 24.55% and 13.55% over those on Cleopatra mandarin, Sour orange and "Swingle" citrumelo, respectively). Trees on Cleopatra mandarin showed a significant higher alternate bearing index (24.87%) as compared with those on other rootstocks.
Juice SSC, acidity, SSC/acid ratio and ascorbic acid contents were significantly affected by rootstock. The fruits from trees budded on Carrizo citrange showed the highest SSC, while those budded on Sour orange had the lowest SSC and highest acidity. The lowest maturity index was achieved by fruits from trees grafted on Sour orange as compared with those on the other rootstocks; however, the highest maturity index was clear in fruits from trees on Carrizo citrange and "Swingle" citrumelo rootstocks.
Considering the tree growth rate, scion/stock affinity, yield and fruit quality; Carrizo citrange and Cleopatra mandarin can be considered as the most promising rootstocks for 'Hernandina' clementine under the Egyptian conditions.
citrus,Clementine,Hernandina,rootstocks,Tree vigor,yield,alternate bearing,fruit quality
https://jpp.journals.ekb.eg/article_166739.html
https://jpp.journals.ekb.eg/article_166739_3ce79b55bf14aba4a2cd27a9ff52c545.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
EFFECT OF SOWING DATE AND PLANT DISTRIBUTION SYSTEM ON GROWTH AND YIELD OF GURMA WATERMELON (Citrullus lanatus var. colocynthoides)
4397
4407
EN
R.
A.
El-Shabrawy
Veg. Res. Dept., Hort. Res. Institute, ARC. Giza- Egypt.
A.
K.
Hatem
Veg. Res. Dept., Hort. Res. Institute, ARC. Giza- Egypt.
10.21608/jpp.2008.166743
Two field trials were carried out at Gemmeiza Agric. Res. Station ( Gharbia Governorate) during two successive summer seasons of 2005 and 2006 to study the response of gurma watermelon to three sowing date ( April 1<sup>st</sup>, April 15<sup>th</sup> and may 1<sup>st</sup>) and three plant distribution system (S<sub>1</sub>, one plant/ hill on one side of the ridge, S<sub>2</sub> : two plants/ hill on one side of the ridge and S<sub>3</sub>: one plant/ hill on both sides of the ridge ) in addition to their interaction on growth, fruit traits and yield. A factorial system in randomized complete blocks design with three replicates was adopted. The results revealed that early planting on April 1<sup>st</sup> increased the vegetative growth expressed as plant fresh weight ,stem length,number of leaves and number of branches per plant than the other planting dates. However, fruit traits, yield and its as fruits weight, fruit diameter, fruit length, number of fruits per plant, weight of 100 seeds, weight of seeds in fruit and yield (kg/ fed.) were significantly decreased with delaying the sowing date .
Plant distribution system had a significant effect on all studied characters in both seasons, S<sub>1</sub> gave the highest values of plant fresh weight, stem length, number of leaves, number of branches, plant fruit weight, fruit diameter and length, weight of seeds fruit and values of 100 seeds weight, however it had the lowest values of seed yield/ fed. The highest values of seed yield/fed. were obtained by using S<sub>2</sub> system .
The interaction between sowing date and plant distribution system had significant effect on all treats under study in both season. Generally, it could be concluded that, using early planting on April 1<sup>st</sup> and plant distribution system (S<sub>2</sub>: two plants/ hill on one side of the ridge might gave the highest values of seed gurma watermelon yield under similar condition of this work.
https://jpp.journals.ekb.eg/article_166743.html
https://jpp.journals.ekb.eg/article_166743_cc1269d8716f585420612da58f34e581.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Production
2090-3669
2090-374X
33
6
2008
06
01
صنف العنب السلموني (البياضي) أطواره الفينولوجية,عناصر الحمل والإثمار وتأثير الرش السمادي الورقي وخف العناقيد على الإنتاجية ووزن الـ100ثمرة.
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4430
EN
مرعي
غضنفر
قسم البساتين, کلية الزراعة، جامعة حلب، حلب ، سورية.
غسان
تلي
قسم البساتين, کلية الزراعة، جامعة البعث، حمص ، سورية.
روزا
جرري
قسم البساتين, کلية الزراعة، جامعة حلب، حلب ، سورية.
10.21608/jpp.2008.166752
أجريت هذه الدراسة على مدى عامين 2006-2005على الصنف (السلموني أو البياضي) المنتشر بکثرة في محافظتي حمص وحماه ذلک بهدف دراسة الأطوار الفينولوجية لهذا الصنف خلال عامي الدراسة وعناصر الحمل والإثمار مما يساعد في تحديد العدد الأمثل من الرشات السمادية وعدد العناقيد على الشجيرة لکل من شجيرات الکرمة للصنف المدروس وتحديد الأفضل منها.
<strong>و تبين من نتائج هذه الدراسة ما يلي:</strong>
1- ارتفاع نسبة العيون المتفتحة في العام 2006 عن الموسم الأول يعزى لتوفر مخزون غذائي جيد و اکتمال تشکلها في الموسم السابق مما انعکس بشکل إيجابي على عدد العناقيد وهذا يفسر رفع قيمة معامل الخصوبة في حين بقي معامل الإثمار بذات القيمة للعام الأول.
2- سبب الرش زيادة في متوسط وزن100 ثمرة في عامي الدراسة, مما حسن من مواصفات العناقيد النوعية ورفع مؤشرات الجودة للإنتاج وحقق قيمة تسويقية مرتفعة وحققت الرشة الثانية أعلى معدل زيادة في متوسط وزن الـ100 ثمرة في حين کان أثر الرشة الثالثة ضئيلاً.
3- نتيجة عملية الخف ازداد وزن المائة حبة للحمولات المنخفضة في عامي الدراسة مما حسن من مواصفات العناقيد النوعية ورفع مؤشرات الجودة للإنتاج وحقق قيمة تسويقية مرتفعة.
التسميد الورقي,الخف,وزن الـ100 ثمرة,النوعية
https://jpp.journals.ekb.eg/article_166752.html
https://jpp.journals.ekb.eg/article_166752_955df5fac4ac9381b30cdd7dd242e2de.pdf