Sökning: "Christian Sigtryggsson"

Hittade 2 uppsatser innehållade orden Christian Sigtryggsson.

1. 1. Dissolution rates of mineral nitrogen fertilisers : effects of moisture and precipitation

   Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

   Författare :Christian Sigtryggsson; [2018]
   Nyckelord :hygroscopicity; deliquescence; fertilisers; calcium nitrate; ammonium nitrate; dissolution rates; rain simulation; enthalpy; precision fertilisation;

   Sammanfattning : Hygroscopicity and deliquescence refer to the ability of a solid to absorb air moisture in which it dissolves and have long been recognised as properties having negative impacts on the product quality of explosives, pharmaceuticals, and fertilisers. Contrastingly, this thesis reconsiders and reappraises the hygroscopic effects of common mineral fertilisers, proposing hygroscopicity to beneficially enable quick dissolution under humid air conditions in absence of precipitation. LÄS MER

3. 2. Kalkningens effekter på fosformineralisering : organisk fosfor i det permanenta fältförsöket i Röbäcksdalen (R3-1002)

   Kandidat-uppsats, SLU/Dept. of Soil and Environment

   Författare :Christian Sigtryggsson; [2015]
   Nyckelord :organisk fosfor; kalkning; pH; mineralisering; fosfatas;

   Sammanfattning : The use of phosphorus within today´s intensive farming, represents a future chal-lenge that grows as the world's stores of easily accessible phosphate minerals are being depleted. At the same time, large amounts of organic matter is annually re-turned to the world´s arable land, organic matter whose mineralization contributes to the plant nutrition supply of the subsequent crop. LÄS MER