Effect of planting time on yield, yield components and some of agronomic traits of two soybean cultivares in Ardabil region

Subject Areas : crop production

Seyed Sajjad Moosavi ¹

1 -

Received: 2010-10-23 Accepted : 2011-07-11 Published : 2010-07-01

Keywords: Biological yield, oil percent age, age cold climates,

Abstract :

To study the effects of different planting time on yield, yield components and some of agronomic traits of soybean varieties, an experiment was conducted as factorial on the basis of completely randomized block design at three replications in Agricultural Research Station of Islamic Azad University, Ardabil branch in 2009. The first factor in this experiment was planting time in four levels (27 May, 5, 15 and 26 June) and the second factor involved varieties of Williams and L17 Line. Experiment results showed that differences between varieties were not significant for all traits, while there were significant differences between planting times for all traits except grain number per pod. Also interaction of planting date × varieties was not significant for all of traits. Planting dates of (27 May and 5 Jun) were placed in a single class for plant height, biological yield, oil percentage (18/5 and 15/98), 100 grain weight (13/5 and12.36 gr). Also, the mentioned traits had the highest values in those planting dates. planting date of 27 May had the highest values for final yield (2227 kg/ha ), nod number per plant and pod number per plant. Results of this research, indicated that plant could not get its potentiality. Because, they lacked suitable time for growth and this subject cause to reduce in yield. Therefore, the planting date of 27 May was recommended for Ardabil cold climate.

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