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practicum faseverdeling en organische stofbalans

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  • Course
  • Voeding en voederteelt
  • Institution
  • HAS Den Bosch (HAS)

In het eerste jaar van de opleiding veehouderij krijgt je bij het vak voeding en voederteelt een practicum. Hierbij wordt er uitgelegd over de faseverdeling van de bodem (met de berekening) en het bepalen van de organische stofbalans (met de berekening).

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Document information

  • April 19, 2021
  • 3
  • 2020/2021
  • Class notes
  • -
  • All classes

Subjects

  • has hogeschool
  • practicum
  • voeding
  • faseverdeling
  • organische stofbalans
  • ringmonster
  • verdeling
  • bodem
  • voederteelt
  • dichtheid grond
  • berekeningen
  • afbraak organische stof
  • humus
  • organische stof
  • has

Written for

  • HAS Den Bosch (HAS)
  • Dier & Veehouderij
  • Voeding en voederteelt
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Content preview

1. Practicum

1.1. Faseverdeling

Ringmonster:
 Ongestoord grondmonster
 Met unieke monster
 Stampen zorgt ervoor dat de lucht weg gaat  is dus niet de
bedoeling

Drogen:
 Weeg het monster voor het drogen en na het drogen
 Zo kun je de hoeveelheid water bepalen
 Voor drogen – na drogen = hoeveelheid water

Verdeling vakken ringmonster:
 PHI A (air/lucht)  grijze vak
 PHI W (water) blauwe vak
 PHI M+H (mineralen en humus)  groene vak
 Samenstelling van de grond
Figuur 1: ringmonster
Waar gebruik je een ringmonster:
 Waar je veel rijdt  rijspoor
 Slechte plek + goede plek
 Waar de dieren veel staan

Gegevens:
 Organische stof 3%
 100 CM3

Berekenen massa natte grond:
 Nat – droog
 160 gram natte grond – 130 gram droge grond = 30 gram
 30 gram water komt overeen met 30 CM3
o 30% is 0,3
 Phi water = 0,3

Dichtheid grond:
 130 gram = 100 CM3
 Hoeveel is 1 M3?
o 130 gram = 100 CM3
o 130.000 =100 DM3
o 130.000.000 = 100 M3
o 130.000 kg per 100 M3 (je wilt 1 M3 weten dus gedeeld door
100)
o 1300 kg per M3

Dichtheid berekenen:

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