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Paper Information

Journal:   IRANIAN JOURNAL OF FIELD CROPS RESEARCH   2006 , Volume 4 , Number 2; Page(s) 357 To 374.
 
Paper: 

SPATIAL RELATIONSHIPS BETWEEN SEED BANK AND SEEDLING POPULATIONS OF HORDEUM SPONTANEUM AND CARDARIA DRABA IN SAFFRON (CROCUS SATIVUS L.) FIELDS

 
 
Author(s):  MAKARIAN H., RASHED MOHASEL M.H., BANAYAN AVAL M., NASIRI MAHALATI MAHDI
 
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Abstract: 

Geostatistical techniques were used to characterize the spatial relationship between Hordeum spontaneum and Cardaria draba seedling and seed bank over the course of one growing season (2004-2005) in three saffron fields, located in Southern Khorasan, Iran. The density and spatial distribution of weeds varied widely with fields. The emergence percentage was higher for Cardaria draba than for H spontaneum in all fields. Semivariograms showed spatial autocorrelation in seed bank and seedling populations of H spontaneum and C. draba in all fields. Cross-semivariograms showed moderate to strong (63.3 to 94.7%) and strong spatial continuity (78.4 to 95.4 %.) between seed bank and seedling population densities of Hspontaneum and C. draba, respectively. Grey-scale field maps of C. draba seed banks corresponded visually to maps of seedling populations and could have been used to target control efforts, but visual correspondence between H spontaneum seed bank and seedling maps was poor. Seed bank and seedling mapping may be useful for site-specific management, but additional information is needed to understand variation in the relationships between these two populations over time and space.

 
Keyword(s): HORDEUM SPONTANEUM, CARDARIA DRABA, GEOSTATISTICS, WEED SEED BANK, WEED SEEDLING, SAFFRON
 
References: 
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