3.2.4. Net Returns

The landscape, soil, and weather variables associated with NRs in the estimated logit model were silt soil texture (Pr ≤ 0.01), loam soil texture (Pr ≤ 0.06), organic matter (Pr ≤ 0.10), and growing degree days (Pr ≤ 0.01) (Table 5). Evaluating the aforementioned soil texture and weather attributes in relation

to NRs indicated that coarser soil textures and warmer temperatures were positively associated with the probability of lower NRs using VRN compared to FP (Table 6). Evaluating the NR odds ratio for the silt soil texture indicated that VRN NRs were 2.66 (*e*0.9767) times as likely to be lower than FP NRs. There was a 16.56% change in the log odds that had lower NRs than the FP. Fields with these conditions would likely not benefit from VRN adoption in terms of profits. The odds ratio evaluated at the loam soil texture indicated that VRN NRs were 2.42 (*e*0.8824) times as likely to be lower than FP. The change in the log odds of lower NRs under these conditions was 14.17%. Fields with these soil conditions may be better suited, from a profitability standpoint, to continue using the current FP N managemen<sup>t</sup> in place.
