Field scale variability in soil properties and silage corn yield

Authors : Murat BİROL, Hikmet GÜNAL

Pages : 27-34

Doi:10.21657/soilst.1143238

View : 12 | Download : 8

Publication Date : 2022-07-27

Article Type : Research Paper

Abstract :Field scale spatial variability of soil properties, crop quality parameters and yield are needed to evaluate the efficiency of management practices in crop production. The purpose of this study was to determine the magnitude of field variability in soil properties, silage yield of corn insert ignore into journalissuearticles values(Zea mays L.); varieties, and to characterize their spatial structures, and map the stated attributes. The experiment was conducted in an alluvial flood plain of lower Kazova watershed in Tokat province of Turkey. Several physical and chemical soil properties and silage corn yield were determined. Coefficient of variation insert ignore into journalissuearticles values(CV%); varied from 1.0% insert ignore into journalissuearticles values(pH); to 38.1% insert ignore into journalissuearticles values(P2O5); in herbicide not applied plots and from 0.9% insert ignore into journalissuearticles values(pH); to exchangeable Na insert ignore into journalissuearticles values(55.1%); in herbicide applied plots. Calcium carbonate, organic matter and clay displayed well defined spatial structure. Sand, pH and electrical conductivity insert ignore into journalissuearticles values(EC); showed moderate spatial dependency. However, silt, moisture content, bulk density, plant available phosphorus and potassium had weak spatial structure. Silage corn yield distribution map successfully distinguished the three corn hybrids planted. The difference in vegetation period among three corn hybrids was effective in distinguishing the location of hybrids within the field. However, the variability in each of the hybrids blocks was assumed to occur due to the difference in short range soil properties. The longest range values were obtained for silage corn yield at both herbicide applied and herbicide unapplied plots.
Keywords : Field variability, Geostatistics, Modeling, Corn quality, Spatial structure