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Fertilizer recommendations for field crops in Croatia

Fertilizer recommendations for field crops in Croatia. Ph. D. Zdenko Loncaric, Faculty of Agriculture, Department of Agroecology Osijek, Republic of Croatia. Faculty of Agriculture Department of Agroecology. Work objects due to achieve high yield, good quality and to preserve ecosystem:

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Fertilizer recommendations for field crops in Croatia

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  1. Fertilizer recommendations for field crops in Croatia Ph. D. Zdenko Loncaric, Faculty of Agriculture, Department of Agroecology Osijek, Republic of Croatia

  2. Faculty of AgricultureDepartment of Agroecology Work objects due to achieve high yield, good quality and to preserve ecosystem: 1 A fertilization field researches 1 B soil analyses improvement (lab researches) 2 soil analyses - database 3 fertilizer recommendations

  3. Fertilization field researches sites: 10 different locations in eastern Croatia crops: maize, wheat, sugar beet, alfalfa, pepper topics: liming, phosphorus, nitrogen, zinc, boron specific: two sites with 15 lysimeters, pot exp. aim: control of yield, quality, soil nutrient status

  4. Soil analyses improvement 1A fertilization field researches 1B soil analyses improvement 2 soil analyses - database 3 fertilizer recommendations

  5. Soil analyses improvement steps: common and additional soil sample analyses, comparison of HRN, EN and other results, creating new model for result interpretations, validation of existing models models: P, N, liming materials, organic fertilizer

  6. Model Example 1: Olsen-P & AL-P

  7. Model Example 2: Liming recommendations to target BS: Hy, CEC (blue line on the graph) to target pH: pH, Hy (red line on the graph)

  8. Database 1A fertilization field researches 1B soil analyses improvement (lab researches) 2 soil analyses - database 3 fertilizer recommendations

  9. Fertilizer recommendations 1A fertilization field researches 1B soil analyses improvement (lab researches) 2 soil analyses - database 3 fertilizer recommendations

  10. Calculator Example 1: Algorithm

  11. Producers and site data Specific nutrient demands regardnig to crop Site specific conditions related to mineralization MINERALIZATION Fertilizer assortment Fertilizer recommendation Nutrient balance

  12. Hy CEC Biogenity + liming Slope mineralization Irigation Agrotechnics N application Protection balance Producers and site data Specific nutrient demands regardnig to crop Site specific conditions related to mineralization Additional analytical data SURVEY DATA MODEL DATA MINERALIZATION Advices, directions, objections, suggestions Fertilizer assortment Fertilizer recommendation Nutrient balance Data base and results

  13. Example 1: Internet browser window

  14. Example 2: Algorithm of DSS Fertilizer recommendations and economic analyses of organic field cropsproduction

  15. Example 2: Visual Basic application Part I – Soil suitability

  16. Part II - Soil properties

  17. Part III – Available Fertilizers

  18. Part IV – Fertilizer Recommendation

  19. Part V – Economic analyses

  20. Thank you foryour attention!

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