Frequently Asked Questions

It usually takes 6 to 8 weeks from initial adoption of the PN7 recommended applications to see a change in leaf texture and growth control. Your results will be impacted by how you use the model settings to reflect your goals and environment and how you adapt your physical practices to allow the plant to achieve metabolic equilibrium. Predict N7 is a great tool for you to control the growth and texture of your turf.

PGRs are generally not needed for growth control after 6 to 8 weeks of following PN7 recommendations, however, light rates of PGRs used in conjunction with Predict N7 have yielded excellent results in some cases. Your goals, environment and intuition can guide the use of PGRs. In cases of extremely high levels of organic matter and during very wet and hot conditions, the Nitrogen release from the soil may exceed the plants need, and a PGR is advisable. Watching the clipping yield is a great way to determine if a PGR is required. PGRs for Poa seedhead suppression are ok.

We do not recommend using other sources of nitrogen because PN7 will recommend the ideal amount of N needed based on your current soil conditions and future weather. Granular nitrogen will skew your results by adding excess N into the system.

If granular nitrogen has been applied, understanding the release curve of that nitrogen source will help you anticipate excess growth, which can be managed by proactive use of the Observed Clipping Yield.

We often recommend setting it to "high" or "very high" for several weeks after the application to account for the additional N applied in the soil.

Physical procedures traditionally used and perceived to enhance leaf texture become much less necessary with Predict N7. If turf is subjected to aggressive physical activities for extended periods while following PN7 recommendations, then additional Nitrogen and metabolites will be needed to heal and recover from these procedures and the plants metabolism will become unbalanced. A general rule of thumb for cultural practices is to avoid procedures that require extra nitrogen above the PN7 recommendations to heal.

Yes! Rolling works extremely well with Predict N7 recommendations. Many courses using PN7 will alternate rolling one day with mowing the next day. For more speed, roll more rather than mowing lower and more frequently. Ultimately a solid front roller with a standard bedknife angle and likely a higher height will achieve desired putting speeds, smoothness, and trueness.

Yes! Topdressing at light and moderate rates works extremely well with the Model to smooth putting surfaces and dilute organic matter. PN7 + topdressing is the best way to manage organic matter.

Email our agronomy team at agronomy@predictn7.com with questions about application rates, best practices, or results.

Go to the My Models page, which is available by clicking on the star on the left side bar of your Predict N7 home page.