3 Works

Data from: Diagnosis of crop secondary and micro-nutrient deficiencies in sub-Saharan Africa

Charles S. Wortmann, Kayuki C. Kaizzi, Nouri Maman, Athanase Cyamweshi, Mohamed Dicko, Maman Garba, Maribeth Milner, Catherine Senkoro, Bitrus Tarfa, Francis Tettah, Catherine Kibunja, Moses Munthali, Patson Nalivata, Davy Nkonde, Leon Nabahungu, Korodjouma Ouattara & Idriss Serme
Crop production in sub-Saharan Africa has numerous biotic and abiotic constraints, including nutrient deficiencies. Information on crop response to macronutrients is relatively abundant compared with secondary and micronutrients (SMN). Data from 1339 trial replicates of 280 field trials conducted from 2013 to 2016 in 11 countries were analyzed for the diagnosis of SMN deficiencies. The diagnostic data included relative yield response (RYR) and soil and foliar test results. The RYR to application of a combination...

Data from: Fine-root exploitation strategies differ in tropical old-growth and logged-over forests in Ghana

Shalom D. Addo-Danso, Cindy E. Prescott, Stephen Adu-Bredu, Akwasi Duah-Gyamfi, Sam Moore, Robert D. Guy, David I. Forrester, Kennedy Owusu-Afriyie, Peter L. Marshall, Yadvinder Malhi. & Yadvinder Malhi
Understanding the changes in root exploitation strategies during post-logging recovery is important for predicting forest productivity and carbon dynamics in tropical forests. We sampled fine (diameter < 2 mm) roots using the soil-core method to quantify fine-root biomass, and architectural and morphological traits to determine root exploitation strategies in an old-growth forest and in a 54-year-old logged-over forest influenced by similar parent material and climate. Seven root traits were considered: four associated with resource exploitation...

Data from: Maize-nutrient response information applied across Sub-Saharan Africa

Charles S. Wortmann, Maribeth Milner, Kayuki C. Kaizzi, Maman Nouri, Athanase R. Cyamweshi, Mohammed K. Dicko, Catherine N. Kibunja, Martin Macharia, Ricardo Maria, Patson C. Nalivata, Negash Demissie, Davy Nkonde, Korodjouma Ouattara, Catherine J. Senkoro, Bitrus Dawi Tarfa & Francis M. Tetteh
The profit potential for a given investment in fertilizer use can be estimated using representative crop nutrient response functions. Where response data is scarce, determination of representative response functions can be strengthened by using results from homologous crop growing conditions. Maize (Zea mays L.) nutrient response functions were selected from the Optimization of Fertilizer Recommendations in Africa (OFRA) database of 5500 georeferenced response functions determined from field research conducted in Sub-Saharan Africa. Three methods for...

Registration Year

  • 2019
    1
  • 2018
    2

Resource Types

  • Dataset
    3

Affiliations

  • Council for Scientific and Industrial Research
    3
  • Institut National de la Recherche Agronomique du Niger
    2
  • Kenya Agricultural and Livestock Research Organization
    2
  • Lilongwe university of Agriculture and Natural Resources
    2
  • Institut de l'Environnement et Recherches Agricoles
    2
  • Ahmadu Bello University
    2
  • Institut D'Economie Rurale
    2
  • University of Nebraska - Lincoln
    2
  • Michigan Technological University
    1
  • Ethiopian Institute of Agricultural Research
    1