I have to compare yield parameters of a tree crop grown under three irrigation methods. But these systems are already established separately in three adjacent fields. Since I can not follow a RCBD design, which methods would be suitable to statistically compare these kind of yield data?
Thank you....
Without replication (Block) the experimental error cannot be estimated and hence the data will not be scientifically acceptable
The CVRD design cannot be used in field experimental
You can compare the response to each irrigation type, but there is no replication. But the data might still be useful
@Prava Kiran Dash
Thank you for your response. The problem is that, Irrigation systems are already established. So, I have only three plots - one plot for one treatment. (there are more than 50 trees within 1 plot).
Assuming that the treatments (Irrigation methods) were initially randomly allocated to the plots, then your design is a CRD. However, you need to do a replication elsewhere for the results that you obtain to become valid.
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