Corn response to selected soil health indicators in a Texas drought

The phrase “soil health” describes the condition of a soil in terms of its physical, chemical, and biological properties. The relationship between soil health and crop yield is rather complex, and quantifying their spatial characteristics at field scale is often limited in the literature. To explore...

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Autores principales:	Kabindra Adhikari, Douglas R. Smith, Harold Collins, Richard L. Haney, June E. Wolfe
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Soil health indicators Soil quality Soil types Yield mapping Geostatistics Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/41dfd2e9e70f466b90fee952f98ec147
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spelling	oai:doaj.org-article:41dfd2e9e70f466b90fee952f98ec1472021-12-01T04:47:09ZCorn response to selected soil health indicators in a Texas drought1470-160X10.1016/j.ecolind.2021.107482https://doaj.org/article/41dfd2e9e70f466b90fee952f98ec1472021-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21001473https://doaj.org/toc/1470-160XThe phrase “soil health” describes the condition of a soil in terms of its physical, chemical, and biological properties. The relationship between soil health and crop yield is rather complex, and quantifying their spatial characteristics at field scale is often limited in the literature. To explore the significance and spatial characteristics of soil health and its indicators in crop production, field-based research was conducted in 2018 at the Blackland Research Center, Texas with the following objectives: (i) to quantify soil health indicators of the Haney Soil Health Tool across a corn field; (ii) to relate soil health status to drought-year corn yield using geospatial techniques; and (iii) to evaluate the relationship among soil health, corn yield, and soils types. We collected 218 samples from 0 to 10 cm soil depth in a 27-ha field following a 35 m × 35 m grid sampling scheme. Samples were analyzed for water extractable organic carbon (WEOC), total nitrogen, nitrate-nitrogen, ammoniacal-nitrogen, and 24-hr CO2 evolution (1-day CO2). Analyses results were used to calculate a soil health value based on Haney Soil Health Tool. The field had an average soil health value of 8.5 (±2.2), and corn yield of 2.9 t ha−1 (±1.3); however, corn yield was more variable (CV > 43%) than soil health (CV = 26.7%). Overall, soil samples with lower values of 1-day CO2, WEOC, and organic nitrogen indicated a lower soil health value, which generally corresponding to lower corn yield. Corn yield may be weakly predicted by soil health (Corn yield = −0.29 + 0.39 × Soil health value, R2 = 0.28). Soil type and rainfall exhibited measurable effects upon the calculated soil health value; corn yields were greater for Houston Black clay than Austin silt clay under drought-year conditions. The variation in drought-year corn yield can be explained by the soil health and its indicators in Texas Blackland soils. Further research is necessary to verify the relationship in differing soil types, management scenarios, and annual rainfall totals.Kabindra AdhikariDouglas R. SmithHarold CollinsRichard L. HaneyJune E. WolfeElsevierarticleSoil health indicatorsSoil qualitySoil typesYield mappingGeostatisticsEcologyQH540-549.5ENEcological Indicators, Vol 125, Iss , Pp 107482- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Soil health indicators Soil quality Soil types Yield mapping Geostatistics Ecology QH540-549.5
spellingShingle	Soil health indicators Soil quality Soil types Yield mapping Geostatistics Ecology QH540-549.5 Kabindra Adhikari Douglas R. Smith Harold Collins Richard L. Haney June E. Wolfe Corn response to selected soil health indicators in a Texas drought
description	The phrase “soil health” describes the condition of a soil in terms of its physical, chemical, and biological properties. The relationship between soil health and crop yield is rather complex, and quantifying their spatial characteristics at field scale is often limited in the literature. To explore the significance and spatial characteristics of soil health and its indicators in crop production, field-based research was conducted in 2018 at the Blackland Research Center, Texas with the following objectives: (i) to quantify soil health indicators of the Haney Soil Health Tool across a corn field; (ii) to relate soil health status to drought-year corn yield using geospatial techniques; and (iii) to evaluate the relationship among soil health, corn yield, and soils types. We collected 218 samples from 0 to 10 cm soil depth in a 27-ha field following a 35 m × 35 m grid sampling scheme. Samples were analyzed for water extractable organic carbon (WEOC), total nitrogen, nitrate-nitrogen, ammoniacal-nitrogen, and 24-hr CO2 evolution (1-day CO2). Analyses results were used to calculate a soil health value based on Haney Soil Health Tool. The field had an average soil health value of 8.5 (±2.2), and corn yield of 2.9 t ha−1 (±1.3); however, corn yield was more variable (CV > 43%) than soil health (CV = 26.7%). Overall, soil samples with lower values of 1-day CO2, WEOC, and organic nitrogen indicated a lower soil health value, which generally corresponding to lower corn yield. Corn yield may be weakly predicted by soil health (Corn yield = −0.29 + 0.39 × Soil health value, R2 = 0.28). Soil type and rainfall exhibited measurable effects upon the calculated soil health value; corn yields were greater for Houston Black clay than Austin silt clay under drought-year conditions. The variation in drought-year corn yield can be explained by the soil health and its indicators in Texas Blackland soils. Further research is necessary to verify the relationship in differing soil types, management scenarios, and annual rainfall totals.
format	article
author	Kabindra Adhikari Douglas R. Smith Harold Collins Richard L. Haney June E. Wolfe
author_facet	Kabindra Adhikari Douglas R. Smith Harold Collins Richard L. Haney June E. Wolfe
author_sort	Kabindra Adhikari
title	Corn response to selected soil health indicators in a Texas drought
title_short	Corn response to selected soil health indicators in a Texas drought
title_full	Corn response to selected soil health indicators in a Texas drought
title_fullStr	Corn response to selected soil health indicators in a Texas drought
title_full_unstemmed	Corn response to selected soil health indicators in a Texas drought
title_sort	corn response to selected soil health indicators in a texas drought
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/41dfd2e9e70f466b90fee952f98ec147
work_keys_str_mv	AT kabindraadhikari cornresponsetoselectedsoilhealthindicatorsinatexasdrought AT douglasrsmith cornresponsetoselectedsoilhealthindicatorsinatexasdrought AT haroldcollins cornresponsetoselectedsoilhealthindicatorsinatexasdrought AT richardlhaney cornresponsetoselectedsoilhealthindicatorsinatexasdrought AT juneewolfe cornresponsetoselectedsoilhealthindicatorsinatexasdrought
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Corn response to selected soil health indicators in a Texas drought

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