A field study of 4 levels of biochar (Factor A) and 4 levels of nitrogen fertilizer (Factor B) ; (16 treatment combination) is underway. Field study was set up in RCBD and replicated thrice, however i have a problem in selecting statistical model to use for data analysis.
I intend to use the general linear model (GLM), but i am not so sure if the model is the best fit for analysis. I need suggestions and guidance.
Hello Dr. Segun,
You can apply two models by MSTAT-C to analysis this experiment:
1. Two Factor Randomized Complete Block Design (RCBD 2 Factor - Model a) ... With one error + Replications.
2. Randomized Complete Block Design for factor A with factor B a split plot on A (RCBD 2 Factor - Model b) ...With two errors + Replications.
I'm prefer model (b) for your experiment .... Kindly find the attached photos to the list and ANOVA of "a" and "b" models.
Best wishes
Nehal
Apply best fit model using various non-linear relation via SAS/ STAT ..
Thank you Dr. Anoop, i will look into your suggestion. Dr. Fausto, my data set are quite enormous, i will send you my data. I appreciate your willingness to help.
usually design of an experiment must be decided before sowing as it affects layout requirements such as requirement of bigger/smaller plots as per need.However if there are two factors having 4 levels each, either of RBD or SPD will be best option.Additional advantage of Split plot design is that you can precisely measure interaction(if any) besides having precion in sub factors on the cost of main factor.Any program like SAS,MSTAT C or SPSS can be used for such analysis in a very convenient mode.
Hello Dr. Segun,
You can apply two models by MSTAT-C to analysis this experiment:
1. Two Factor Randomized Complete Block Design (RCBD 2 Factor - Model a) ... With one error + Replications.
2. Randomized Complete Block Design for factor A with factor B a split plot on A (RCBD 2 Factor - Model b) ...With two errors + Replications.
I'm prefer model (b) for your experiment .... Kindly find the attached photos to the list and ANOVA of "a" and "b" models.
Best wishes
Nehal
- Badges
- Science topic
- Similar topics
- Agriculture
- Soil Science