Above Ground Growing Trends of Persian Shallot (Allium altissimum Regel.) as Affected by Different Levels of Phosphorus Application and Planting Densities

Subject Areas : Journal of Crop Ecophysiology

Mohammad  Kheirkhah ¹ (Faculty of Agriculture, Higher Education Complex of Shrivan, Shirvan, Iran)
Fateme  Mohammadkhani ² (Graduated in M.sc. of Agronomy, Higher Education Complex of Shrivan, Shirvan, Iran)
Alireza  Dadkhah ³ (Faculty of Agriculture, Higher Education Complex of Shrivan, Shirvan, Iran)
Mahmood  Ghorbanzadeh Neghab ⁴ (Faculty of Agriculture, Higher Education Complex of Shrivan, Shirvan, Iran)

Received: 2015-05-25 Accepted : 2016-03-09 Published : 2016-06-21

Keywords: Plant density, phosphorus, Allium altissimum Regel, Growth analyses,

Abstract :

Journal of Crop Ecophysiology / Vol. 10, No. 2, 2016                                                                                          18     Domestication, cultivation and mass production of shallot to prevent the loss of its genetic resources are of particular importance. This study was conducted in a factorial experiment based on randomized complete block design with 3 replications to evaluate the effects of different levels of phosphorus fertilizer and planting densities on medicinal and industrial plants of shallots at the Agricultural Research Station of Higher Education Complex of Shirvan. Treatments of this study were plant densities at tree levels (20, 30 and 40 plants per square meter) and phosphorus applications (superphosphate) at four levels (0, 150, 250 and 350 kg.ha-1). The results showed that phosphorus, plant density and the interactions between them significantly affected growth parameters such as leaf area index, leaf area ratio, crop growth, relative growth, and net assimilation rates as compared to controls. According to these results, it can be concluded that this plant reacts positively to the phosphorus fertilization.

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