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Journal: NEW FINDINGS IN AGRICULTURE | Year:1386 | Volume:2 | Issue:2 (6) | Start Page:173 | End Page:186

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Title

STUDY THE COMPETITION MODEL OF WHEAT AND RYEGRASS IN DIFFERENT FEEDING CONDITIONS

Pages

 Start Page 173 | End Page 186

Abstract

 In order to study the effect of microelements on competition ability, growth and damaging of RYEGRASS, an experiment was done in 2004–2005 at experimental field of Azad Islamic university of Ahwaz branch. In this experiment, growth of RYEGRASS and WHEAT were studied in different conditional feeding including COMPLETE MICROELEMENTS (Zn, Cu, Fe, Mn, Mg and Mo) at 1 kg/ha, ZINK at 0.5 kg/ha and a control treatment. Different population parameters include innate rate of increase (r) and carrying capacity (K) were calculated and compared according to logistical growth model. Competition effects of two species were studied in different feeding condition according to Lutka and Voltra model.The results showed that application of microelements increase dry weight of RYEGRASS.Complete microelements could increase dry weight and growth rate of RYEGRASS more than other treatments. Were as dry weight and growth rate of WHEAT with microelements utilize decreased because increase competition ability of RYEGRASS. Also specified that RYEGRASS had more unfit environmental condition tolerance power than WHEAT.

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