HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Jurado-Guerra, P. Articles by Fish, E. B. Search for Related Content PubMed PubMed Citation Articles by Jurado-Guerra, P. Articles by Fish, E. B. Agricola Articles by Jurado-Guerra, P. Articles by Fish, E. B. Related Collections Soil Fertility and Productivity Municipal Waste Bioremediation and Biodegradation Nitrogen

Soil Nitrate Nitrogen Dynamics after Biosolids Application in a Tobosagrass Desert Grassland

^a Campo Experimental "La Campana", Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias (INIFAP), Chihuahua, Chih., México 31100
^b Department of Range, Wildlife, and Fisheries Management, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409

View larger version (20K): [in a new window]   Fig. 1. Monthly precipitation at the Stellar/Tobosagrass Site (ST) in 1997 and 1998, and long-term monthly precipitation (NOAA, 1993) in Sierra Blanca, TX.

View larger version (34K): [in a new window]   Fig. 2. Soil NO3–N (mg kg–1) in a Stellar soil as affected by biosolids rate, season of biosolids application, soil depth, and sampling date in 1997 and 1998. Biosolids were applied in 1997. Rate means within a season of application followed by the same lowercase letter are not significantly different (P > 0.05). Season of application means within a rate followed by the same uppercase letter are not significantly different (P > 0.05); n = 10. Figures lacking mean separation letters indicate corresponding nonsignificant effects. Solid lines represent biosolids application in the dormant season; dashed lines represent biosolids application in the growing season. Data are back-transformed means from natural log-transformed data.

View larger version (23K): [in a new window]   Fig. 3. Soil NO3–N (mg kg–1) in a Stellar soil as affected by biosolids rate, season of application, mulch, and irrigation (top figures: non-irrigated; bottom figures: irrigated) in August 1998. Biosolids were applied in 1998. Rate means within a season of application, mulch and irrigation level followed by the same lowercase letter (a, b, c) are not significantly different (P > 0.05). Season of application means within a rate, mulch, and irrigation followed by the same capital letter (A, B) are not significantly different (P > 0.05). Mulch means within a rate, season of application, and irrigation followed by the same lowercase letter (x, y) are not significantly different (P > 0.05). n = 20. Solid lines represent dormant season application; dashed lines represent growing season application. Data are back-transformed means from natural log-transformed data.