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Information Journal Paper

Title

Effect of Potassium Rates and Sources on Some Quantitative and Qualitative Characteristics of Oil-Seed Sunflower in Calcareous Soils

Pages

  265-276

Abstract

 The current study was conducted to investigate the effect of different levels and sources of potassium (K) on seed and Oil yields and K uptake of sunflower (Helianthus annuus L. ) var. Azargol. The experiment was laid out in randomized complete block design under split plot arrangement with three replications at two locations in West Azerbaijan province during two consecutive years (2017-18). Sunflower sources (K2SO4 and KCl) were arranged in the main plots, accommodating five K doses 0 (control), 100, 200, 300 and 400 kg ha-1 in sub-plots. The results indicated that treatment of 100 kg ha-1 K from K2SO4 source increased the seed and Oil yields by, respectively, 44. 8% and 38. 6%, which did not differ from the same treatment using KCl. The highest straw weight and biomass were obtained by 300 kg. ha-1 K from K2SO4 source, which increased by 58. 9% and 51. 8%, respectively, compared to the control. K uptake by straw was 2. 93 times more than the grain. Sunflower reduced native available potassium (Kava) by 32 mg. kg-1. K uptake in grain was 141. 2 kg. ha-1, which enhanced with increasing potassium level treatments. The soil Kava was proportional to potassium level treatments. The maximum soil Kava was 410 mg. kg-1, with application of 400 kg. ha-1 of K. In this connection, K sourcaes had the same effect. The results suggested that by application of 100 kg K. ha-1 from K2SO4 or KCl in oil-seed sunflower cultivation, in addition to producing a suitable product, Kava of the soil is maintained in optimum range.

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    APA: Copy

    MAJIDI, A., & Khalilzadeh, G. R.. (2020). Effect of Potassium Rates and Sources on Some Quantitative and Qualitative Characteristics of Oil-Seed Sunflower in Calcareous Soils. IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES), 34(2 ), 265-276. SID. https://sid.ir/paper/411195/en

    Vancouver: Copy

    MAJIDI A., Khalilzadeh G. R.. Effect of Potassium Rates and Sources on Some Quantitative and Qualitative Characteristics of Oil-Seed Sunflower in Calcareous Soils. IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES)[Internet]. 2020;34(2 ):265-276. Available from: https://sid.ir/paper/411195/en

    IEEE: Copy

    A. MAJIDI, and G. R. Khalilzadeh, “Effect of Potassium Rates and Sources on Some Quantitative and Qualitative Characteristics of Oil-Seed Sunflower in Calcareous Soils,” IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES), vol. 34, no. 2 , pp. 265–276, 2020, [Online]. Available: https://sid.ir/paper/411195/en

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