Publication Date
1997
Description
Cropping schemes that efficiently utilize nutrients applied in dairy waste effluent sprayfields is needed to avoid ground water contamination. Three 12 month cropping systems were grown under dairy waste effluent irrigation: 1) corn-forage sorghum-rye (C-FSR), 2) corn-rhizoma peanut-rye (C-RP-R), and 3) rhizoma peanutrye (RP-R). With an effluent N loading rate of 403 kg ha-1 yr-1, 2-yr mean DM yield was 30.7 Mg ha-1 yr-1 for the C-FS-R system, 26.2 for C-RP-R, and 17.9 for RP-R. Nitrogen concentration for C and FS ranged from 9 to 14 g kg-1 while RP ranged from 24 to 35. The higher N concentration in RP forage compensated for the lower DM yield of the RP-R system, resulting in the highest N removal of the 3 systems.
Citation
French, E C.; Woodard, K R.; Graetz, D A.; Prine, G M.; and Van Horn, H H., "Rhizoma Peanut Based Cropping Systems for Dairy Effluent Spray Fields" (2024). IGC Proceedings (1993-2023). 20.
https://uknowledge.uky.edu/igc/1997/session19/20
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Rhizoma Peanut Based Cropping Systems for Dairy Effluent Spray Fields
Cropping schemes that efficiently utilize nutrients applied in dairy waste effluent sprayfields is needed to avoid ground water contamination. Three 12 month cropping systems were grown under dairy waste effluent irrigation: 1) corn-forage sorghum-rye (C-FSR), 2) corn-rhizoma peanut-rye (C-RP-R), and 3) rhizoma peanutrye (RP-R). With an effluent N loading rate of 403 kg ha-1 yr-1, 2-yr mean DM yield was 30.7 Mg ha-1 yr-1 for the C-FS-R system, 26.2 for C-RP-R, and 17.9 for RP-R. Nitrogen concentration for C and FS ranged from 9 to 14 g kg-1 while RP ranged from 24 to 35. The higher N concentration in RP forage compensated for the lower DM yield of the RP-R system, resulting in the highest N removal of the 3 systems.
