Potassium Use Efficiency of Safflower and Sunflower Grown in Different Soils

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dc.contributor.authorAbbadi, Jehad
dc.date.accessioned2019-01-27T18:37:31Z
dc.date.available2019-01-27T18:37:31Z
dc.date.issued2017-01-17
dc.description.abstractUsing alternative crops that use supplied nutrients efficiently is a possible approach in land use sustainability. Plant species vary in their potassium (K) use efficiency in soils of low K availability by using different strategies. Growing K efficient species to improve yield may be desirable if K efficiency mechanisms are illustrated. Therefore K use efficiency of the alternative oil crops safflower and sunflower was investigated under semi-controlled conditions in sandy and loamy soils using four K supplies. Both species reacted strongly to increasing K supplies in both soils and performed better in loamy soil, although they contained less K concentration in loamy soil. Under suboptimal K supply in both soils, safflower was superior over sunflower by having higher agronomic efficiency (greater relative yield), higher internal K concentration, better relative K accumulation in dry matter. Both species had similar K efficiency ratio (KER) in sandy soil, but sunflower was more efficient in loamy soil. Sunflower was superior over safflower in terms of utilization index (UI) in both soils. Sunflower had less external K requirement and recovered more K than safflower in both soil types. The K use efficiency of crops is based on different competitive components. Thus using different measures of utilization efficiency parameters to differentiate plant species and genotypes to superior and inferior could be in some cases misleading. Neither safflower nor sunflower showed a combination of high values of all K uptake and utilization efficiency components in both soils at studied K levels.en_US
dc.description.sponsorshipFinancial support for this study was provided by the German Academic Exchange Service (DAAD), through a Re-invitation Programme for Former Scholarship Holders (A/12/08202 and 50068612), the Palestinian funding program for research and training “ZAMALAH”, and the Dutch EP-NUFFIC through NICHE-PAA 233 project. Technical support by Mrs. Suzanne Koch in department of plant nutrition and yield physiology, George-August University, Goettingen, Germany is gratefully acknowledged for her generous assistance in samples analyses.en_US
dc.identifier.citationJehad Abbadi, “Potassium Use Efficiency of Safflower and Sunflower Grown in Different Soils.” World Journal of Agricultural Research, vol. 5, no. 5 (2017): 244-257. doi: 10.12691/wjar-5-5-1en_US
dc.identifier.issn2333-0678
dc.identifier.urihttps://dspace.alquds.edu/handle/20.500.12213/4626
dc.language.isoenen_US
dc.publisherScience and Education Publishingen_US
dc.subjectsustainable agricultureen_US
dc.subjectpotassiumen_US
dc.subjectutilization efficiencyen_US
dc.subjectalternative cropsen_US
dc.subjectcarthamus tinctoriusen_US
dc.subjecthelianthus annuusen_US
dc.subjectsaffloweren_US
dc.titlePotassium Use Efficiency of Safflower and Sunflower Grown in Different Soilsen_US
dc.typeArticleen_US
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