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Spatial Variability of Soil Nutrients Content Related to Rice Yield

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Author(s): Tamaluddin Syam

Journal: Jurnal Tanah Tropika
ISSN 0852-257X

Volume: 15;
Issue: 2;
Start page: 153;
Date: 2010;
Original page

Keywords: Rice yield | soil nutrients content | spatial maps | variable rate fertilizer

ABSTRACT
Soil nutrients content and its spatialdistribution are very important data for site specific fertilizer management to supply sufficient crop nutrition. Thestudy was carried out at the farmer paddy field in Rejomulyo Village, Metro Town District of Lampung Province.The aim of this study was to evaluate the relationship between soil nutrients content (N, P, K) and rice yield. Soilsamples were collected before fertilizers treatment by the grid sampling method and GPS was used as a tool forprecisely determine sample site location. Rice yield data were collected by small plot method on the each-of soilsample location. Spatial analysis using GS + software and statistical analysis using SPSS software. The result indicatedthat total nitrogen in the soil had a significantly correlation with the rice yield (r = 0.95**) and their spatial distributionwas relatively similar each others. Spatial maps of soil nutrients content could be used for the variable rate fertilizerstreatment, especially for nitrogen.
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