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Article
Impact of seeds soaking use some microelements on seedling growth of cucumber (Cucumis sativus L.)

Authors: Hand Jawad Kadiem --- Hawrez Ali Nadir
Journal: Journal Of Kirkuk University For Agricultural Sciences مجلة جامعة كركوك للعلوم الزراعية ISSN: 22210482 Year: 2019 Volume: 2018 المؤتمر الدولي الزراعي الثالث Issue: عدد خاص Pages: 25-29
Publisher: Kirkuk University جامعة كركوك

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Abstract

This study was carried out in Halabja, Technical College of Applied Sciences, during 2016-2017, to evaluate the impacts of soaking seed in some microelements (Zn, Fe and Mn), with distilled water on seedling growth of cucumber (cucumis sativus L.). Cucumbers seed (Habib f1 371325-21-1) was selected to test and observe the germination seeds and seedling growth characteristic. An Experiment was adapted in Randomize Complete Design (RCD) with three replications. Consequently, the concentration of microelements was used 0.5% seeds soaking for 12, 18 and 24 hours. Results showed the maximum seed germination, seedling emergence and maximum dry matter of vegetative part that was taken from Mn+Fe+Zn with Zn -12 hours (100%) and Fe-12hours (57.53%), (1.53gm) and other treatments respectively. The highest length of plant was obtained from Zn-18 hours (13.17cm), and maximum leave area was taken from Mn- 12 hours (17.70 cm2). And the highest stem diameter is (3.37 mm) from Zn-24 hours. Finally, the lowest germination rate, seedling emergence, plant length, leave area, stem diameter and dry matter were obtained from DW-24 (87.87%), Mn-12 hours and Mn+Zn+Fe -24 hours (24.27 %), control (6.00 cm), (12.73 cm2), Mn+Zn+Fe- 24 hours (2.87 mm) and DW-18 hours (1.26 gm). In addition, it is thought that the effects of different solutions could lead to improve seedling parameters that benefit in increase of cucumber production.

Keywords

cucumber --- microelements --- seeds --- soaking --- seedling


Article
Effect of Bacillus subtilis and Pseudomonas fluorescens in reducing cucumber seed rot and seedlings death caused by Rhizoctonia solani and Fusarium solaniin green house conditions

Authors: Fadhal A. Al-Fadhal --- Duaa Arife Al-Khafaji
Journal: Kufa Journal for Agricultural Sciences مجلة الكوفة للعلوم الزراعية ISSN: 20727798 23128186 Year: 2019 Volume: 11 Issue: 1 Pages: 13-25
Publisher: University of Kufa جامعة الكوفة

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Abstract

The study was conducted to evaluate the efficacy of two bacterial biological control agents controlling the pathogenic fungi that cause seed rot and seedlings death on cucumber growth in green house in Abbasiya, Al-Huraira, Al-Haidari and Qizwiniya towns in Najaf province. Bacillus subtilis and Pseudomonas fluorescens were isolated from soils of the above areas and biochemically identified at ministry of science and technology. The pathogenic fungi Rhizoctonia solani and Fusarium solani isolated from cucumber seeds that have been grown in gerrn house and diagnosed morphologically and molecularly using the PCR technique. The results showed two bacterial isolates were highly antagonistic to R.solani and F.solani. Results of the pot experiment showed the ability of both bacterial isolates introspecting cucumber plants from infection by R. solani and F. solani, in addition to their high efficiency in increasing the growth indicators (germination, total vegetation and root length, soft and dry plant weight and leg diameter) after 14 and 28 days post planting.The field experiment in green house when testing the effect of two bacteria isplutes was showed increasing of the total chlorophyll content of leaves of cucumber plants at 28 days, especially when treated with P. fluorescens was significant differed from the rest of treatments with chlorophyll content of 1027.3 mg. 1. in addition that some bacteria was significantly increased the rate of plant contact of the major elements (total nitrogen ,total Phosphor, total potassium) NPK after 14 and 28 days of planting 2.9 and 3.55%. The best treatment ofB. subtilis + P. fluorescens. was significantly increased the total cucumber yield 6.185 kg / plant for 20 harvests, compared with the rest of treatments.


Article
The Residues Effect of some Crop Plants on Germination and Growth of Five Wheat Cultivars Triticum aestivum L.
تأثير المخلفات النباتية لبعض المحاصيل في إنبات و نمو خمسة أصناف من الحنطة الناعمة aestivum L. Triticum

Authors: Fadia A. Abid-Aljabar فادية عبدالستار عبدالجبار --- Janan A. Saeed جنان عبد الخالق سعيد
Journal: Rafidain journal of science مجلة علوم الرافدين ISSN: 16089391 Year: 2019 Volume: 28 Issue: 4 A Pages: 8-22
Publisher: Mosul University جامعة الموصل

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Abstract

The research was conducted to study the effect of the crops (Cucumis melo L., Cucumis sativus L. and Cucurbita pepo L.) residues, added to the soil at the ratio 5% W: W, incubated for (0,2,4,6 weeks), in germination and growth of five wheat cultivars Triticum aestivum L. including (Buro, Abu Graib, Rashid, Sham 6 and IPA 99). The results showed a significant reduction in seed germination and the growth of the wheat plants grown in the soil containing the crops residues as compared with the control (without residues), showing the difference in the effect of the crops type, the C. melo residues caused the greatest reduction, also incubation periods differ in their effect of the crops residues. The interaction between cultivars and the incubation period, crops residues showed significant reduction in seed germination and growth, so the least germination percentage recorded (60.42%), the shoot and root length (26.27cm, 31.74cm), and the dry weight of them (1.29gm, 0.31gm), occur in the IPA 99 at the period 4 weeks incubation of residues, were as the highest values of seed germination and growth are (98.32%, 52.20cm, 57.53cm, 2.04 gm, 0.62gm) showed in Buro plants grown in control soil (without residues ). This was a comparison with the change in chlorophyll a, b content of the plant. The results showed through the search on type of fungal were found in the soil containing the crops residues as compared with the control (without residues), the each of fungus Rhizoctonia solani and Fusarium solani found at percent 60 % and % 52 respectively, in the soil containing the crop residues. Wheat cultivars showed difference in their response the effect to the crop residues, indicating that Buro showed resistance to the effect with better germination and growth, where as IPA 99 showed sensitive to the effect.

أجري البحث لدراسة تأثير المخلفات النباتية لمحاصيل (البطيخ Cucumis melo L.، والخيار Cucumis sativus L. ، والقرع Cucurbita pepo L.) المضافة الى التربة بنسبة 5% وزن : وزن والمحضنة للفترات (0 ،2، 4، 6 أسابيع ) في إنبات البذور والنمو لخمسة أصناف من حنطة الخبز Triticum aestivum L. (بورو، أبو غريب، رشيد، شام 6 ، إباء 99)، أظهرت النتائج حصول إختزال معنوي في إنبات البذور والنمو لنباتات الحنطة النامية في الترب الحاوية على المخلفات مقارنة مع تربة المقارنة (بدون مخلفات) مبينة حدوث تباين في تأثير نوع المحاصيل أذ سببت مخلفات البطيخ أعلى تأثير، كما أظهرت فترات التحضين تباينا في التأثير، وأظهرت نتائج التداخل بين الأصناف وفترات التحضين ونوع المخلفات إختزالا معنوياً في الإنبات والنمو، أذ سجلت أقل نسبة إنبات (60.42%) وأقل طول للمجموع الخضري والجذري (26.27 سم ، 31.74 سم) وأقل وزن جاف لكل منهما (1.29 غم ، 0.31 غم) في الصنف إباء 99، عند فترة التحضين 4 أسابيع لمخلفات البطيخ. بينما سجلت أعلى القيم للأنبات والنمو ( 98.32 %، 52.20 سم ،57.53 سم، 2.04 غم ، 0.62 غم) في الصنف بورو في تربة المقارنة (بدون مخلفات). وقد ترافق ذلك بحصول إختزال في محتوى الكلوروفيل a وb في نباتات الحنطة. ومن خلال التحري عن الفطريات المتواجدة في تربة المقارنة ومقارنتها مع الترب الحاوية على المخلفات المضافة والمحضة تبين أن كلاً من الفطرين Rhizoctonia solani وFusarium solani سجلا تواجداً بنسبة 60% و 52% في الترب الحاوية على المخلفات المحضنة. وسجلت أصناف الحنطة تبايناً في تأثرها بمخلفات المحاصيل إذ أظهر الصنف بورو مقاومة لتأثير المخلفات إذ أعطى إنباتاً ونمواً أفضل في حين أظهر الصنف (إباء 99) حساسية للتأثير.

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