The combined effect of terminal heat the end of growth season and competition between plants on phenology, yield and components yield in faba bean

H., AB.; R., A.; N., A.; B., A.

The combined effect of terminal heat the end of growth season and competition between plants on phenology, yield and components yield in faba bean

Document Type : Research Paper

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Abstract

The aim of this study was investigation the combined effect of terminal heat of last growth season and competition between plants on phenology, yield and components yield in faba bean. A field experiment with 3 sowing dates (28 November 2011, 15 December 2011 and 7 January 2012) and 4 plant densities (8, 12, 16 and 20 plants m^-2) was conducted on faba bean (cv. Barkat) at Agricultural Science Research Farm of Agricultural Sciences and Natural Resources Faculty of the GonbadKavous University, during 2011-2012. Experimental design was a factorial arrangement of factors based on randomized complete block design with four replications. Results showed that phenology stages shortened by delay in planting date because of crop encountered with high temperatures at the end of growing season and crop growth rate was increased. Also planting date had no significant effect on the number of plants per square meter and the seed number per pod but other yield components were decreased with delayed planting while plant density had no significant on number seed per pod, seed weight and seed yield. Harvest index and number pod per plant decreased and biological yield increased with increasing plant density but Interaction of plant density and planting date had no significant effect on all studied traits.

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