The alellopathic potential of rice

الملخص EN

An experiment was conducted at the College of Education laboratories to test the eff' allelopathy compound released from rice residues on wheat plant, and determined whether the reduction in growth of wheat crop rotation ws to toxicity of rice residues .

randomized complete block design Means were compouned using Results showed that: 1-The residues of rice significantly reduced vegetative and root growth .

2-Aqueous extracts of rice significantly reduced seed germination and seedling growth ofwh 3-The toxicity of the residues appeared two weeks after residues decomposition of soi continue &for indicatded that six weeks.

4-The results strongly suggest the toxicity effect of rice residue was acausative factor respt for reduction of wheat growth