Diagnosis and recommendation integrated system (DRIS) of soybean seed oil content
| Autor: | Silas Zanella, Pedro Alexandre Varella Escosteguy, Alfredo Castamann, Diego Berres |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
nutritional balance
Group ii fungi nutritional diagnosis Soil Science Growing season food and beverages nutrição vegetal plant nutrition Biology lcsh:S1-972 SOYBEAN SEED OIL Crop Nutrient Agronomy Oil content equilíbrio nutricional Glycine max (L.) Merrill Cultivar lcsh:Agriculture (General) Agronomy and Crop Science Plant nutrition diagnose nutricional |
| Zdroj: | Revista Brasileira de Ciência do Solo v.36 n.6 2012 Revista Brasileira de Ciência do Solo Sociedade Brasileira de Ciência do Solo (SBCS) instacron:SBCS Revista Brasileira de Ciência do Solo, Vol 36, Iss 6, Pp 1820-1827 (2012) |
| Popis: | The Diagnosis and Recommendation Integrated System (DRIS) can improve interpretations of leaf analysis to determine the nutrient status. Diagnoses by this method require DRIS norms, which are however not known for oil content of soybean seeds. The aims of this study were to establish and test the DRIS method for oil content of soybean seed (maturity group II cultivars). Soybean leaves (207 samples) in the full flowering stage were analyzed for macro and micro-nutrients, and the DRIS was applied to assess the relationship between nutrient ratios and the seed oil content. Samples from experimental and farm field sites of the southernmost Brazilian state Rio Grande do Sul (28° - 29° southern latitude; 52° -53° western longitude) were assessed in two growing seasons (2007/2008 and 2008/2009). The DRIS norms related to seed oil content differed between the studied years. A unique DRIS norm was established for seed oil content higher than 18.68 % based on data of the 2007/2008 growing season. Higher DRIS indices of B, Ca, Mg and S were associated with a higher oil content, while the opposite was found for K, N and P. The DRIS can be used to evaluate the leaf nutrient status of soybean to improve the seed oil content of the crop. |
| Databáze: | OpenAIRE |
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