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Paper Information

Journal:   IRANIAN JOURNAL OF MEDICINAL AND AROMATIC PLANTS   may-june 2017 , Volume 33 , Number 2 (82) ; Page(s) 219 To 232.

Effects of different levels of and superphosphate fertilizers on mineral elements accumulation in Rubia tinctorum L.

Author(s):  Salek m., SAADATMAND S.*, Khavari Nejad R.A., Zeinali h.
* Department of Biology, Science and Research Azad University, Tehran, Iran
In order to study the mineral elements of Rubia tinctorum L. under salinity conditions, four levels of nitrogen fertilizer (0, 60, 120, 180) kg ha-1 in the form of urea, and four levels of phosphorous fertilizer (0, 60, 120, 180) kg ha-1 in the form of triple super phosphate were used. The study elements were nitrogen, phosphorus, sodium, calcium, iron, and zinc. The experiment was conducted in a research farm in Isfahan and was arranged as factorial based on a randomized complete block design with three replications. The results demonstrated that the effects of nitrogen and phosphorous fertilizers on element concentration were significant. Nitrogen and phosphorus fertilization could increase the content of N, P, Ca, Fe and Zn and decrease of Na and improved Rubia yield. The interaction between nitrogen and phosphorous fertilizers had more positive impacts on yield and nutrient accumulation as compared with simple effects. In the use of nitrogen and phosphorous fertilizers together, the maximum increase in yield of aerial parts was 0. 43 kg m-2 (threefold more than that of the control) and the highest root yield was 0. 78 kg m-2 (about twofold more than that of the control). The application of certain levels of fertilizers had notable effects on increasing nutrient concentration and yield under saline conditions. The optimum level of both urea and phosphate fertilizers was generally 180 kg ha-1 and if these levels of fertilizers are used together, it would give more desirable outcome.
Keyword(s): Mineral elements,Rubia tinctorum L.,nitrogen and phosphorous fertilizers,yield
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