المستخلص: |
A field experiment was conducted to study the effect of foliar fertilization with some trace elements (Fe, Mn and Zn) on chemical constituents of Ruta graveolens L. plants either alone or in combination of them at concentration of (50 and 100 ppm) on Horticulture experimental farm, Fac. of Agric., Omar El- Mokhtar Univ. El- baida Libya, during 2013/ 2014 and 2014/ 2015. The results indicated that all foliar application treatments caused significant gradual increase in the herb content from Nitrogen, phosphorus, potassium, Iron, zinc, manganese, essential oil and alkaloids percentage as compared with control treatments. The best treatments was foliar spraying of plants with combination of trace elements (Fe+ Zn +Mn) at concentration (100 ppm ) which recorded the highest significant values (2.90, 3.09%) for N, (1.73,1.82%) for P, (5.28,5.30%)for K, (2911.33, 2915.33 ppm.) for Fe, (298.33,299.66ppm)for Mn,(992.33 ,993ppm) for Zn, (0.071,0.075%) for essential oil and (0.042, o.o44%) for alkaloids compared with other treatments included in this study during the two successive seasons respectively
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