Refinar búsqueda
Resultados 1-10 de 10
Influence of green-house cover on potential evapotranspiration and cucumber water requirements Texto completo
2011
Hashem. F.A. | Medany, M.A. | Abd El-Moniem, E.M.
Influence of green-house cover on potential evapotranspiration and cucumber water requirements
2011
Hashem. F.A. | Medany, M.A. | Abd El-Moniem, E.M.
The experiment was conducted through two successive seasons of 2008 and 2009 at ElBosaily farm, EI-Behira governorate at the North Coastal of the Nile Delta, in Egypt. This work aimed to study the effect of three green-house covers (polyethylene sheet, white and black net) and three irrigation levels [80%, 100% and 120% of the potential evapotranspiration estimated according to class A pan equation (ET,)], applied by drip irrigation system, on plant growth and crop yield of Cucumber (Cucumis sativus L.. cv. Reda F1). The experimental design was split- plot with three replicates. The results showed that white net green-house cover optimized growth and yield of cucumber plant. White net cover treatment recorded the highest vegetative growth (plant height, number of leaves, total leaves area, total fresh and dry weights), and significantly increased total yield. The highest vegetative growth was obtained by 100% ET, compared to 80 and 120% ETo treatments. The interaction among water treatment and green-house cover indicated the highest vegetative growth and crop yield were obtained under white net cover wi1th 100% ET0,.
Mostrar más [+] Menos [-]Influence of green-house cover on potential evapotranspiration and cucumber water requirements Texto completo
2011
F.A. Hashem | M.A. Medany | E.M. Abd El-Moniem | M.M.F. Abdallah
Pollen grain morphology and seed coat characters of 11 cultivars belonging to two species. The experiment was conducted through two successive seasons of 2008 and 2009 at El-Bosaily farm, El-Behira governorate at the North Coastal of the Nile Delta, in Egypt. This work aimed to study the effect of three green-house covers (polyethylene sheet, white and black net) and three irrigation levels [80%, 100% and 120% of the potential evapotranspiration estimated according to class A pan equation (ETo)], applied by drip irrigation system, on plant growth and crop yield of Cucumber (Cucumis sativus L. cv. Reda F1). The experimental design was split–plot with three replicates. The results showed that white net green-house cover optimized growth and yield of cucumber plant. White net cover treatment recorded the highest vegetative growth (plant height, number of leaves, total leaves area, total fresh and dry weights), and significantly increased total yield. The highest vegetative growth was obtained by 100% ETo compared to 80% and 120% ETo treatments. The interaction among water treatment and green-house cover indicated the highest vegetative growth and crop yield was obtained under white net cover with 100% ETo.
Mostrar más [+] Menos [-]Role of potassium and salinity effects on growth and chemical compositions of date palm plantets
2011
Darwesh, R.S.S. | El-Banna, A.A.
A greenhouse pot experiment was carried out to investigate the effect of salinity and potassium at different levels alone or in various combinations on growth, mineral and proline content in leaves of plantlets of Phoenix dactylifera L. cv. Bartomouda (in vitro production, two years old from acclima tized them). The following treatments were applied: three levels of salinity Na Cl + Ca C12 w.w 2:1 (14000, 16000 and 18000 ppm.) and two levels of potassium (2000 and 3000 ppm) in addition to control (no salts or potassium used), salts and potas sium were added in the irrigation water. In general, all levels of salinity significantly decreased various growth parameters such as plant height, number of leaves and roots, root length, fresh and dry weights of leaves than that of the control. These parameters were decreased with increasing salinity levels, whereas it, significantly increased Na, Ca and K contents in leaves with high content of proline. The treatment 18000 ppm salts gave the highest significant reduction of the growth parameters, while caused an increase in proline Na, Ca, and K contents compared to control treatment (no salts) . This was true in both seasons. The applications of potassium significantly increased the previous growth parameters as compared with the control treatment (without salts and potassium) the treatment 3000 ppm had the highest results. Moreover the applications of potassium gave high alleviated the negative effects of salt stress, the treatment 3000 ppm gave the best results on the growth parameters of date palm plantlets grown under salinity condition . Regarding the interaction the obtained data revealed that the interaction between treatment 3000 ppm potassium and 14000 salts produced the highest significant results. Gen erally, from the obtained results it can conclude that the plantlets of date palm produced by tissue culture can be tolerated salt stress by addition of potassium which can significantly ameliorate the harmful effects of salts, positive effects on the growth parameters of the plantlets was showed by potassium applications.
Mostrar más [+] Menos [-]The dwarf Barleria : a new pot- plant product
2002
Auda, M.S. | Shahin, S.M. | El-Shakhs, M.H. (Ministry of Agriculture, Cairo (Egypt). Horticulture Research Inst.)
Effect of the growth retardant PP333 on growth development, yield and fruit quality of, Picual olive trees
2002
Abou-Rawash, M. | Montasser, A. | El-Wakeel, H. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture) | Nageib, M. | Zinhoum, E.
nheritance of grain fill parameters in wheat under heat-stressful and non-stressful environments
2000
Saadalla, M.M. (Alexandria Univ., Damanhour (Egypt). Faculty of Agriculture)Ghandorah, M.O.
Agro-management of Cenchrus ciliaris L. as a perennial fodder crop under calcareous soil conditions
1999
El-Houssini, A.A. | Nassar, Z.M. | Abou-Deya, I.B. (Ministry of Agriculture Cairo (Egypt). Desert Research Centre)
Effect of Amcotone and Atonik with some additives on nitrogen accumulation and productivity of wheat, Triticum aestivum L. plants
2002
Farahat, M.M. (National Research Center, Cairo (Egypt). Botany Dept.)
Yield dynamics in four yellow maize, Zea mays L. hybrids
2002
Abo-Shetaia, A.M. | Abdel-Gawad, A.A. | Mohamed, A.A. | Abdel-Wahab, T.I. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture)
ffect of soil and type of inoculum on growth, N2-Fixing activity and nodule occupancy of Casurina glauca and Casuarina equisetifolia
2000
Selim, S.M. | Mostafa, M.I. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture)Hammouda, S.H.
Effect of Mepiquat chloride on growth, yield and fiber properties of some Egyptian cotton cultivars
1999
Mekki, B.B. (National Research Centre, Cairo (Egypt). Field Crops Research Dept.)
