Animal manure and precision farming: no contradiction in terms Jaap Schröder
Content Aspects of precision improvement in crop production ● What type of NP source? ● How much of it? ● When exactly? ● Where exactly (‘placement’)? Placement ● Positioning in vertical plane ● Positioning in horizontal plane (‘band application’) Band application of manure on maize land Conclusions
Manure placement: treatments
Conclusion Smart fertilization: more than just a better placement: Precision =which type of fertilizer, how much, when, where? When and where issues: bear the root system in mind! Manure placement improves NUE and PUE of maize cropping system: ‘more with less’ if you like Still to do: ● Merits in view of the present Dutch P soil test (PPAE) ● Evaluation on heavier soil types ● Cost benefit analysis
References Schröder, J.J. et al., Neth J Agric Sci 44: Schröder, J.J. et al., Neth. J. Agric. Sci. 45: Schröder, J.J., Biores. Techn. 92: Schröder, J.J. et al., Proceedings Ramiran, Versailles, France. Schröder, J.J. et al., Chemosphere 84: 822–831 Schröder, J.J., Natural Resources (in press) Schröder, J.J. et al., Eur. J. Agronomy (submitted)