Among the various agronomic factors as the yield limiting, planting pattern is considered of great importance. According to soil and climatic characteristics, increase in yield can be ensured by maintaining appropriate plant population through suitable planting pattern. In order to investigate the effect of different planting patterns on growth, flower and seed yield of mallow (Malva sylvestris L.) as a medicinal plant, a field experiment was conducted based on a complete randomized block design with three replications at the Agricultural Research Station, College of Agriculture, Ferdowsi University of Mashhad during growing season of 2012-2013. The experimental planting patterns included: 70 and 90 cm apart single side rows and two side rows. Results of variance analysis showed that planting patterns had significant effects on leaf area, fresh and dry flower weight and seed yield of mallow. The highest leaf area, fresh and dry yields of mallow were observed in two sides. Also, the highest seed yield of mallow was observed in two side planting pattern.

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