Essays about: "Pesticides"

Showing result 1 - 5 of 190 essays containing the word Pesticides.

  1. 1. The effect of habitat type on farmland bird populations : In Tarnava Mare Natura2000 reserve, Romania

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildningUppsala universitet/Institutionen för ekologi och genetik

    Author : Krisztina Csiki; [2020]
    Keywords : farmland; birds; agriculture; Tarnava; Mare; Natura2000; reserve; yellowhammer; tree sparrow; skylark; red-backed shrike; common whitethroat;

    Abstract : Widespread extinction is a critical threat to biodiversity and is largely caused by human overexploitation of habitat and populations. A widely used and hence well studied organism group for indication of biodiversity is birds. READ MORE

  2. 2. Mapping Connectivity in the Swedish Agricultural Landscape

    University essay from Mittuniversitetet/Avdelningen för ekoteknik och hållbart byggande

    Author : William Franzén; [2020]
    Keywords : ; GIS; Circuitscape; Structural Connectivity; Agriculture; Landscape; Perennialization; Land use;

    Abstract : The changes that Swedish agriculture has undergone during the 20th century has resulted in strongly increased productivity, but at the cost of more intensive environmental impacts. One of these is loss of biodiversity, which is driven by, e.g., usage of pesticides and loss and fragmentation of habitats. READ MORE

  3. 3. No-till grain legume production in organic farming : constraints, possibilities and potential agronomic practice

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Zuzanna Chetnik; [2020]
    Keywords : no-till; conservation tillage; cover crops; intercropping; organic farming; grain legumes;

    Abstract : Today’s agriculture is often specialised, and relies on pesticides, synthetic fertiliser and tillage. Tillage, especially ploughing, has shown to have a negative impact on climate, soil health and -biodiversity. An alternative is no-tillage, a practice that leaves the soil almost undisturbed except for minimal impact during sowing. READ MORE

  4. 4. The introduction of the Africanised honey bee: A stinging menace or a blessing of the Americas? : a comparison of the Brazilian and USA beekeeping experiences

    University essay from SLU/Dept. of Urban and Rural Development

    Author : Jorge Antonio Moreno Reategui; [2020]
    Keywords : Beekeeping Social field; Africanised honey bee; qualitative and quantitative research methodology;

    Abstract : In 1956, Brazilian scientist Warwick Estevam Kerr, introduced queens of the African honey bee (AHB) from South Africa to breed with European honey bees (EHB) in order to improve honey production in Brazil. Some of the AHB swarmed by accident out of the experimental apiary, located in Rio Claro-São Paulo State, and started to spread. READ MORE

  5. 5. Resistensutveckling i våtarv mot ALS-herbicider i norra Europa

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Marie Björs; [2020]
    Keywords : ALS-inhiberande herbicider; kemisk ogräsbekämpning; ogräskontroll; resistens; Stellaria media; våtarv;

    Abstract : Våtarv (Stellaria media (L.) Vill.) är ett annuellt (ettårigt) örtogräs som växer på åkermarker i större delen av världen. Ogräset har låga krav på växtplatsen och kan orsaka skördeförluster i de flesta odlingssystem. READ MORE