Soil health indicators reveal that past dairy manure applications create a legacy effect

Tarkalson, D.D. and Rogers, C.W. and Bjorneberg, D.L. and Dungan, R.S. (2024) Soil health indicators reveal that past dairy manure applications create a legacy effect. Agricultural & Environmental Letters. 9(1):1-8. 29 April 2024.

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Abstract

Understanding the long-term effects of manure applications on soil biological measurements in agricultural systems receiving animal manure in semiarid climates is important. From 2004 to 2009, dairy manure solids were applied to plots at rates of 0, 134, and 237 dry Mg/ha. The study was a randomized complete block with three replicates. Soil samples were taken from each manure rate in the spring of 2020 at 0-15 and 15-30 cm. Eleven years after manure applications ceased, many of the soil chemical and biological indicators were different between the manure and control treatments. In general, soil organic carbon (SOC), biological indicators were significantly greater in the 134 Mg/ha and 237 Mg/ha treatments as compared to the 0 Mg/ha. Therefore, it is evident that manure applications had a long-term or legacy effect (at least 11 years post manure application) on soil properties, especially those related to nutrient cycling.

Item Type:	Article
NWISRL Publication Number:	1779
Subjects:	Manure Soil > Amendments Soil > Soil quality
Depositing User:	Users 11 not found.
Date Deposited:	29 Apr 2024 22:33
Last Modified:	29 Apr 2024 22:33
Item ID:	1822
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1822