کلیدواژهها
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Desi-type chickpea, micronutrients, nanofertilizers, nanoparticles, semiarid region
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چکیده
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Chickpea is one of the most important legume crops in the Mediterranean semiarid regions. Soils of these regions
generally have free CaCO3, high pH and low organic matter, which reduce the availability of micronutrients
and cause their deficiencies. In order to study the effects of integrated application of different level of elemental
sulfur (0, 15, 30 kg·ha-1) and nano-chelated micronutrients (Zn, Fe, Mn) on growth and agro-morphological
traits of chickpea (Cicer arietinum L.), a field experiment was conducted in the semiarid regions of the northwestern
part of Iran. Evaluation of morphological traits showed that application of high level of sulfur significantly
improved plant height, the number of primary branches and canopy width compared to the control. The
longest growth period was recorded for plants grown by application of high level of sulfur and nano-chelated
Zn fertilizer. The obtained data revealed that application of nano-chelated Zn fertilizer resulted in a significant
increase in seed number per plant and seed weight compared to other nano-micronutrient fertilizers. Overall,
the best growth performance and the highest seed yield were obtained from the integrated application of Zn and
high level of sulfur. The findings showed that soil micronutrient deficiencies are partly due to high alkalinity of
the soil, and application of sulfur beyond 15 kg·ha-1 can be an effective method to increase the efficacy of nanofertilizers.
Integrated application of micronutrient and sulfur should be considered as an efficient agronomic
management option for chickpea production systems in semiarid region.
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