Hello, the most used program by our weed laboratory is Origin due to it has incorporated the Boltzmann equation which describes better the relation between periods with or without weeds and the crop production.

Thanks, I will apply it, but Do you know about any specific program where can I graph it? I mean the to variables with and without weed control

You can try Origin2018, I just used it and run so well. Any kind of variables you can process with this