Essays about: "soil and fertilizer"

Showing result 16 - 20 of 139 essays containing the words soil and fertilizer.

  1. 16. Rabbit urine as a biopesticide and biofertilizer : how does a Kenyan cultural method compare to conventional chemical pesticide and fertilizer?

    University essay from SLU/Dept. of Ecology

    Author : Kari Løe; [2023]
    Keywords : biopesticide; biofertilizers; rabbit urine; aphids; agriculture; Kenya;

    Abstract : The increased demand for food production has created higher needs for crop nutrients and protection. Although synthetic fertilizers and pesticides have increased food security and ensured yield for farmers worldwide, there are growing concerns about the environmental implications of over reliance of these fertilizers and pesticides as well as concern for pest resistance due to persistent pesticide use. READ MORE

  3. 17. Separation and acidification of digested animal manure : properties of the future organic fertilizers

    University essay from SLU/Dept. of Soil and Environment

    Author : Marie Björs; [2023]
    Keywords : Digestate; Eutrophication; Farmers’ survey; Plasma activation; Screw press;

    Abstract : Agricultural areas with a high animal density contribute to eutrophication in waterbodies and seas worldwide due to accumulation of nutrients around animal farms. Animal manure is heavy and bulky, thus unpractical to transport long distances and new techniques have been developed to refine animal manure and make it easier to transport. READ MORE

  4. 18. Synergies of nutrient fractions for fertilization in agriculture

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Linda Adjei; [2022]
    Keywords : Phosphorus; Wastewater; Polonite; molybdenum blue spectrophotometry; Fertilizer; Sunflower; Plant growth;

    Abstract : A few countries are controlling the worlds phosphate reserves and this raw material is depleting at a faster rate. Most of the mined phosphate rock comes from Morocco and the Russia area which has unstable security. Studies shows that about 40% of potash export and 28% of nitrogen and phosphorus (P) fertilizer products comes from the Russia area. READ MORE

  5. 19. Assessing the suitability of using the by-product Petrit-E from steel production as agricultural fertilizer

    University essay from Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Author : Eva Galyas; [2022]
    Keywords : steel slag; fertilizer; soil; leaching test;

    Abstract : Due to the growing population, waste generation and food supply industries need to move towards a circular economy and take advantage of by-products. Metallurgical slag is a main by-product during steel production which contains several valuable minerals and can be used for several further applications, including water purification and agriculture. READ MORE

  6. 20. Bedömning av kvävestatus i stärkelsepotatis : en jämförelse mellan olika metoder

    University essay from SLU/Dept. of Soil and Environment

    Author : Elin Carlsson; [2022]
    Keywords : kväve; kompletteringsgödsling; bladskaftsanalys; Yara N-sensor; Yara N-tester; fjärranalys med Vultus system;

    Abstract : Kväve är ett viktigt näringsämne för växten eftersom det fyller många viktiga funktioner, bland annat som byggstenar till proteiner som ingår i fotosyntesen men också klorofyllmolekyler, DNA och RNA. Tillförseln av kväve är viktig att optimera i stärkelsepotatis (Solanum tuberosum) utifrån kvävepris, stärkelsehalt och skörd men också för aspekten att minska utlakning. READ MORE