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Enhance the allelopathic potential of two rice cultivar (Oryza sativa L.) by foliar application of salicylic acid under salinity stress

Mohammadali Esmaeili, Ayoub Heidarzade

Department of Agronomy, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

Key words: Chlorophyll content, Nitrogen content, Neda, Salicylic Acid, Tarom.

Abstract

riseIn order to investigate the effect of salicylic acid under salinity stress as an allelopathy stimulator in rice cultivars a hydroponic and pot experiment was carried out in factorial arrangement. Rice cultivars (Tarom and Neda) were grown under different levels of salinity stress (0, 4dS/m and 8dS/m) until 5 leaf stage, also at the same time the salicylic acid was used as foliar (0, 1% and 2%). The root exudates were collected and used as a growth bio-inhibitor in barnayardgrass pot culture. The highest inhibitory effects on chlorophyll, leaf area, root and nitrogen contents of barnyardgrass was obtain when the SA (%2) + EC (4dS/m) treatment was used (with 38%, 60%, 38% and 37.5% inhibition, respectively). Also, chlorophyll content was closely correlated with nitrogen content. Therefore, it may be possible to recommend that, the foliar application of SA 2% will be suitable for better stand of rice seedlings and more allelopathic potential on barnyardgrass in moderate saline conditions of paddies.

Get the original article in Source: Volume 6, Number 4, February 2015 – IJB

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