Effects of application and non application of Cu, Mn and Zn on yield and yield components of rice (Oryza sativa L.) Local-Tarom cultivar

In order to affect some micronutrient elements on grain yield and yield components of rice cultivars Local-Tarom، an experimental farm in 2010 as the city of Amol in factorial randomized complete block design with four replications was performed. Three essential micronutrients zinc، copper and manganese، each at two levels، including no use (control) and consumption of 20 kg/ha as source sulfate were. The results showed that the total number of tillers per hill of statistical affect any of the treatments was not included. Fertile tillers per hill، the total number of spikelet and filled spikelet per panicle and 1000-grain weight by taking zinc sulfate 4. 9، 3. 5، 5. 9، 3. 1 percent، respectively. As a result increased yield on the 4. 9 percent has been added. Harvest index due to the consumption of zinc sulfate 3 percent reduction in straw yield increased. Grain yield، harvest index and yield components of all statistically were not affected by manganese. Straw yield with manganese sulfate consumption decreased 2 percent. Grain yield with consumption of copper sulfate 5 / 2 percent was reduced because the grain weight than 3. 9 percent was lower. Consumption of copper sulfate increased straw yield ratio 3. 7 percent has been the result of the harvest index was also lower. The most grain yield، harvest index، and lowest straw yield under the three factors for treatment interactions with the consumption of zinc sulfate and without taking copper and manganese.