By M. J. Frissel

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Extra info for Cycling of Mineral Nutrients in Agricultural Ecosystems

Example text

4 0 ----1+ 1 t* ---1) 1 0 C h a n g e s i n a m o u n t o f t o t a l soil c o m p o n e n t SUPPLIES: REMOVALS: 8. 9. 10. 11. 12. 13. 14. 15. 26. 27. Transfer Transfer Input by Input by Input by Input by Input by Input by Transfer Transfer by application of manure and/or waste . b y d r o p p i n g s o n g r a z e d areas . . . . application of manure ............ fertilizers .................... N-fixation .................... application of litter, sludge and waste . irrigation and flooding ...........

Output by run-off of available nutrients ...... Output by dust ...................... Output by organic matter, removed by run-off Transfer by net uptake from soil by plant ..... TOTAL 30. by application of manure and/or waste . by d r o p p i n g s on grazed areas . . . . application of manure ............ fertilizers .................... N-fixation .................... application of litter, sludge and waste . irrigation and flooding ........... dry and wet deposition ...........

15. 16. 17. 26a. 27. R E M O V A L S : 19. 20. 21. 22. 23. 24. 25. 30t. 30r. Transfer by application of manure and/or waste . T r a n s f e r b y d r o p p i n g s on g r a z e d areas . . . . Input by application of manure ............ I n p u t b y fertilizers . . . . . . . .

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