Dear Soleh, without sharing the data used in statistical analysis it will not be possible to give a proper answer. As you may find Agriculture is not my area of expertise, but I would be inclined to guess that either you did not followed a RCBD, therefore the data you got is nor compatible (in agreement) with such a design or you performed a "wrong" statistical analysis. But again, without showing your data is just a guess . You may hide the details of your work you want to keep private but you need to identify the variables/factors, the RCBD you followed etc. Kind regards
I am completely agreed with Mr. Luis F. Gouveia with his point of view and his assumption. lastly, you should share the data to understand your problem by expert, otherwise it is quite impossible to give a proper solution of your problem.