Articles by Author: Njoroge Ruth

Search results for Njoroge Ruth

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  1. Efforts Toward Improving Maize Yields on Smallholder Farms in Uasin Gishu County, Kenya, through Site-specific, Soil-testing-based Fertiliser Recommendations: A Transdisciplinary Approach

    Efforts Toward Improving Maize Yields on Smallholder Farms in Uasin Gishu County, Kenya, through Site-specific, Soil-testing-based Fertiliser Recommendations: A Transdisciplinary Approach

    Item type: Journal Article • Journal: East African Agricultural and Forestry Journal
    This study evaluated the effects of site-specific, soil-testing-based fertiliser recommendations on maize yields using the transdisciplinary (TD) process. The TD process utilizes knowledge from science and practice. Farmers, extension officers, local financial institutions, and other practitioners collaborated with local scientists...
  2. Allelopathic influence of <em>Tagetes</em> and <em>Bidens-</em>infested soils on seedling growth of certain crop species

    Allelopathic influence of <em>Tagetes</em> and <em>Bidens-</em>infested soils on seedling growth of certain crop species

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Two naturally-occurring polyacetylene derivatives are found in Tagetes minuta L. and Bidens bipinnata L. which, when released into the soil, may affect crop growth. They are alpha- terthienyl in roots of T. minuta and phenylheptatriyne in leaves of B. bipinnata...
  3. Allelopathic effect of sweetpotato (<em>Ipomoea batatas</em>) cultivars on certain weed and vegetable species

    Allelopathic effect of sweetpotato (<em>Ipomoea batatas</em>) cultivars on certain weed and vegetable species

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A glasshouse study was conducted to determine the allelopathic potential of sweetpotato (Ipomoea batatas (L.) Lam.) cultivars Bosbok, Brandal and Koedoe. Nine indicator plants, three weeds: yellow nutsedge (Cyperus esculentus L.), purple nutsedge (Cyperus rotundus L.) and common pigweed (Amaranthus...
  4. Allelopathic interaction between <em>Chenopodium album</em> L. and certain crop species

    Allelopathic interaction between <em>Chenopodium album</em> L. and certain crop species

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Laboratory and glasshouse studies were conducted to assess the allelopathic effect of Chenopodium album L. on the germination and early growth of certain crop species. Test species were grown in soils containing 1% (m/m) freeze-dried shoot material of the weed...
  5. Allelopathic effects of <em>Chenopodium album</em> L. and <em>Chenopodium polyspermum</em> L. on another weed and two crop species

    Allelopathic effects of <em>Chenopodium album</em> L. and <em>Chenopodium polyspermum</em> L. on another weed and two crop species

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Chenopodium album L. and Chenopodium polyspermum L. are cosmopolitan weeds that often cause serious crop yield losses. Although it is well known that both species compete strongly with crops, nothing has been published on their relative allelopathic potentials. Experiments for...
  6. Evaluation of <em>Desmodium uncinatum</em>, <em>Fagopyrum esculentum</em> and <em>Brachiaria humidicola</em> as potential green manure crops for nematode management in sugarcane

    Evaluation of <em>Desmodium uncinatum</em>, <em>Fagopyrum esculentum</em> and <em>Brachiaria humidicola</em> as potential green manure crops for nematode management in sugarcane

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Plant-parasitic nematodes remain a challenge to sugarcane growers in South Africa, and alternatives to chemical control are desirable. This project aimed to determine the impact of green manure crops Desmodium uncinatum, Fagopyrum esculentum and Brachiaria humidicola on nematodes and subsequent...
  7. Reflecting back on <em>‘Oral literature in Africa’:</em> Some reconsiderations after 21 years

    Reflecting back on <em>‘Oral literature in Africa’:</em> Some reconsiderations after 21 years

    Item type: Journal Article • Journal: South African Journal of African Languages
    In this article the background to Oral Literature in Africa (first published in 1970) is considered, as well as its aims of providing a foundation for further research and enhancing the visibility of oral literature. Among the continuing issues raised...
  8. Status and conservation of Hinde's Babbler <em>Turdoides hindei</em>, a threatened species in an agricultural landscape

    Status and conservation of Hinde's Babbler <em>Turdoides hindei</em>, a threatened species in an agricultural landscape

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Njoroge, P. & Bennun, L. A. 2000. Status and conservation of Hinde's Babbler Turdoides hindei, a threatened species in an agricultural landscape. Ostrich 71 (1 & 2): 69–72.
  9. Important Bird Areas in Kenya

    Important Bird Areas in Kenya

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Bennun, L. & Njoroge, P. 2000. Important Bird Areas in Kenya. Ostrich 71 (1 & 2): 164–167.
  10. Birds to watch: a Red Data List for East Africa

    Birds to watch: a Red Data List for East Africa

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Bennun, L.A., Njoroge, P. & Pomeroy, D. 2000. Birds to watch: a Red Data List for East Africa. Ostrich 71 (1 & 2): 310–314.