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Potassium pools equilibration during growth stages of two rapeseed cultivars under drought stress | ||
| Iran Agricultural Research | ||
| مقاله 1، دوره 37، شماره 1، شهریور 2018، صفحه 1-10 اصل مقاله (612.79 K) | ||
| نوع مقاله: Full Article | ||
| شناسه دیجیتال (DOI): 10.22099/iar.2017.4626 | ||
| نویسندگان | ||
| R. Baladi1؛ E. Bijanzadeh* 1؛ M. Najafi-Ghiri2 | ||
| 1Department, College of Agriculture and Natural Resources of Darab, Shiraz University, Shiraz, I.R. Iran | ||
| 2Department of Range and Watershed Management, College of Agriculture and Natural Resources of Darab, Shiraz University, Shiraz, I.R. Iran | ||
| چکیده | ||
| ABSTRACT- Different soil potassium (K) pools including soluble, exchangeable and non-exchangeable in surface and subsurface soils may be totally used by canola roots at different growth stages under drought conditions. A field experiment was conducted for one growing season (2013-2014) to study K pools changes during growth stages of two rapeseed cultivars under drought. The experiment was arranged in a randomized complete block design with four factors including different stages of rapeseed growth (before planting, seedling, stem elongation, flowering, grain filling and harvesting), drought (full irrigation, drought from flowering and silique formation), rapeseed cultivars (Sarigol and RGS) and soil depths (0-15 and 15-30 cm). Soil samples were collected and soluble, exchangeable and non-exchangeable K were determined. Results showed that the contents of soluble and non-exchangeable K (NEK) decreased during the growth stages (22 and 198 mg kg-1, respectively) while the contents of exchangeable K increased until stem elongation (57 mg kg-1) and then remained constant. Decrease in the contents of HNO3-extractable K (sum of soluble, exchangeable and non-exchangeable K) in the topsoils was significantly more than that in the subsoils (198 vs. 142 mg kg-1). Drought also had a significant effect on K pools distribution. Drought from flowering decreased the contents of NEK and HNO3-extractable K; however, drought from silique formation had no significant effect on the contents of the different K forms. Type of rapeseed cultivar had no significant effect on K pools distribution. It is concluded that a severe decrease in HNO3-extractable K occurs at the flowering stage (170 mg kg-1) and it must be considered for K fertilizers management. Decrease in NEK during the rapeseed growth supports the hypothesis that this form of K may be released during a growth season and this large pool of K may be considered in K fertility management and fertilizer recommendations. Generally, K uptake by Sarigol cultivar was significantly higher than that by RGS cultivar (177.7 vs. 129.4 kg ha-1). Potassium uptake by rapeseed decreased by drought and this decrease was more pronounced by drought from silique formation (more than 40% decrease in K uptake). | ||
| کلیدواژهها | ||
| Potassium forms؛ Flowering stage؛ Rapeseed؛ Soil depth؛ Drought | ||
| مراجع | ||
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Damon, P., Osborne, L., & Rengel, Z. (2007). Canola genotypes differ in potassium efficiency during vegetative growth. Euphytica, 156, 387-397. Eskandari, B., Kholdebarin, B., & Shahi, A. (2011). Interaction effect of potassium and drought on potassium uptake and transport in two canola (Brassica napus L.) cultivars. Iranian Journal of Crop Sciences, 13, 49-60. Grimes, DW., Yamada, H, & Hughes, SW. (1987). Climate-normalized cotton leaf water potentials for irrigation scheduling. Agricultural Water Management, 12, 293–304. Havlin, J., Beaton, J., Tisdale, S., & Nelson, W. (1999). Soil Fertility and Fertilizers. Ed. Pretince Hall, New Jersey. Helmke, P., Sparks, D., Page, A., Loeppert, R., Soltanpour, P., Tabatabai, M., Johnston, C., & Sumner, M. (1996). Lithium, sodium, potassium, rubidium, and cesium. Methods of soil analysis Part 3-chemical methods.551-574. Jabbari, H., Akbari, G., Sima, N., Rad, A., Alahdadi, I., Hamed, A., & Shariatpanahi, M. (2013). Relationships between seedling establishment and soil moisture content for winter and spring rapeseed genotypes. Industrial Crops and Products, 49, 177-187. Jackson, ML. (1975). Soil Chemical Analysis: Advanced ourse. Department of Soils, College of Agriculture, University of Wisconsin, Madison, Wisconsin.
Jalali, M., & Khanlari, Z. (2014). Kinetics of Potassium Release from Calcareous Soils Under Different Land Use. Arid Land Research and Management.28:1-13. Johns, WD., Grim, RE., & Bradley, F. (1954). Quantitative estimation of clay minerals by diffraction methods. Journal of Sedimentary Petrology, 24, 242 – 251. Khormali, F., Abtahi, A. (2003). Origin and distribution of clay minerals in calcareous arid and semiarid soils of Fars Province, southern Iran. Clay Mineral, 38, 511–527. Najafi Ghiri, M. (2016). Changes in different forms of soil potassium at various growth stages of wheat. Soil Research, 30(1), 39-47. Najafi Ghiri, M., & Abtahi, A. (2012). Factors affecting potassium fixation in calcareous soils of southern Iran. Archives of Agronomy and Soil Science.58:335-352. Najafi Ghiri, M., Abtahi, A., & Jaberian, F. (2011a). Factors affecting potassium release in calcareous soils of southern Iran. Soil Research, 49, 529-537. Najafi Ghiri, M., Abtahi, A., Karimian, N., Owliaie, H., & Khormali, F. (2011b). Kinetics of non-exchangeable potassium release as a function of clay mineralogy and soil taxonomy in calcareous soils of southern Iran. Archives of Agronomy and Soil Science, 57, 343-363. Najafi Ghiri, M., Abtahi, A., Owliaie, H., Hashemi, S., & Koohkan, H. (2011c). Factors Affecting Potassium Pools Distribution in Calcareous Soils of Southern Iran. Arid Land Research and Management, 25, 313-327. Olk, D., Cassman, K., & Carlson, R. (1995). Kinetics of potassium fixation in vermiculitic soils under different moisture regimes. Soil Science Society of America Journal, 59, 423-429. Owliaie. HR., Abtahi, A., Heck, R.J. 2006. Pedogenesis and clay mineralogical investigation of soils formed on gypsiferous and calcareous materials, on a transect, southwestern Iran. Geoderma. 134:62–81. Rad, A., & Abbasian, A. (2011). Evaluation of drought tolerance in winter rapeseed cultivars based on tolerance and sensitivity indices. Žemdirbystė (Agriculture), 98, 41-48. Rao, C., Rupa, T., Rao, A., & Bansal, S. (2001). Subsoil potassium availability in twenty-two benchmark soil series of India. Communications in Soil Science and Plant Analysis, 32, 863-876. Sardans, J., Peñuelas, J., Prieto, P., & Estiarte, M. (2008). Drought and warming induced changes in P and K concentration and accumulation in plant biomass and soil in a Mediterranean shrubland. Plant and Soil, 306, 261-271. Sharma, B., Mukhopadhyay, S., & Sawhney, J. (2006). Distribution of potassium fractions in relation to landforms in a Himalayan catena: (Verteilung von Kaliumfraktionen von Bodenarten innerhalb einer Himalaya–Catena). Archives of Agronomy and Soil Science, 52, 469-476. Sharpley, A. (1989). Relationship between soil potassium forms and mineralogy. Soil Science Society of America Journal, 53, 1023-1028. Sparks, D. (2000). Bioavailability of soil potassium. Handbook of soil science. 38-52. Staff, S. (2014). Keys to Soil Taxonomy, twelfth edition. Natural Resources Conservation Service.360. Tening, A, Omueti, J., Tarawali, G., & Mohamed Saleem, M. (1995). Potassium status of some selected soils under different land‐use systems in the subhumid zone of Nigeria. Communications in Soil Science & Plant Analysis, 26, 657-672. Wang, M., Zheng, Q., Shen, Q., & Guo, S. (2013). The critical role of potassium in plant stress response. International journal of molecular sciences, 14(4), 7370-7390. | ||
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