Diagnosis of sugar beet (Beta vulgaris L.) nutrient imbalance by DRIS and CND-clr methods at two stages during early growth |
| |
Authors: | Przemys?aw Bar?óg |
| |
Institution: | Department of Agricultural Chemistry and Environmental Biogeochemistry, Poznań University of Life Sciences, Poland |
| |
Abstract: | High yield of sugar beet require adequate mineral nutrition. To be diagnosed across interacting nutrients using appropriate interpretation models, the plant must be sampled at a critical physiological stage. This study aimed to develop and validate norms at the 7-leaf and well-developed rosette stages, for diagnostic purposes using the Diagnosis and Recommended Integrated System (DRIS) and Compositional Nutrient Diagnosis based on centered log ratios (CND-clr). Data on nutrient concentrations and plant performance were obtained from 409 plots in West-Central Poland. With respect to the growth stages, for physiological and practical reasons, the 7-leaf stage is preferable for diagnostic purposes. At this growth stage, the high-yield subpopulation characterized by higher concentration of potassium and sodium compared to other nutrients. CND-clr indices were closely related to DRIS indices (R2 > 0.93). The CND-clr indices, however, better explained the differences in the white sugar yield within the validated dataset than the DRIS indices. |
| |
Keywords: | beet yield quality leaf analysis macronutrients sodium critical nutrient indices |
|
|