Spatial variability of total soil nitrogen and sulphur content at two conventionally managed fields

• Published in: Plant, soil and environment Vol. 54; no. 10; pp. 413 - 419
• Main Authors: Vanek, V.,Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Agrobiologie, Potravinovych a Prirodnich Zdroju, Balik, J.,Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Agrobiologie, Potravinovych a Prirodnich Zdroju, Silha, J.,Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Agrobiologie, Potravinovych a Prirodnich Zdroju, Cerny, J.,Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Agrobiologie, Potravinovych a Prirodnich Zdroju
• Format: Journal Article
• Language: English
• Published: Czech Academy of Agricultural Sciences 01-10-2008
• Subjects: ANALISIS DEL SUELO; ANALYSE DE SOL; AZOTE; AZUFRE; CAPA ARABLE DEL SUELO; CONTENIDO DE AGUA EN EL SUELO; COUCHE ARABLE; CROP YIELD; DISTRIBUCION ESPACIAL; DISTRIBUTION SPATIALE; http://www.fao.org/aos/agrovoc#c_10176; http://www.fao.org/aos/agrovoc#c_36230; http://www.fao.org/aos/agrovoc#c_5192; http://www.fao.org/aos/agrovoc#c_7109; http://www.fao.org/aos/agrovoc#c_7198; http://www.fao.org/aos/agrovoc#c_7208; http://www.fao.org/aos/agrovoc#c_7514; http://www.fao.org/aos/agrovoc#c_7812; NITROGEN; NITROGENO; RENDEMENT DES CULTURES; RENDIMIENTO DE CULTIVOS; SLOPING LAND; soil; SOIL ANALYSIS; SOIL WATER CONTENT; SOUFRE; SPATIAL DISTRIBUTION; spatial variability; SULPHUR; TENEUR EN EAU DU SOL; TERRE EN PENTE; TERRENO EN DECLIVE; TOP SOIL; yield
• DOI: 10.17221/404-PSE
• EISSN: 1805-9368
• ISSN: 1214-1178

The main objective of this work was to evaluate correlations of spatial variability of total soil N and S contents with crop yield, slope of the plots and soil moisture. Two plots were investigated (I: 54 ha and II: 32 ha). Soil samples were taken from the topsoil in a regular grid which was localised by GPS (individual sampling points were 80 m apart). The average N concentration in plot I was 0.16%; in plot II it was 0.12%. S conc. in plots I and II were 0.09% and 0.08%, respectively. Spatial variability of total N differed in separate parts of the plots. A higher variability was recorded in plot I with the coefficient of variation (CV) 15.7%, whereas in plot II the CV was only 11.1%. However, S conc. showed only little variability, and thus its CV were low (2.5 and 2.3% in plots I and II, respectively). A positive relationship was observed between N conc. and crop yield. This effect was more significant in plot II. The S conc. showed no correlation with yield. Furthermore, positive correlations were observed between field altitude, soil moisture and crop yield in both plots.