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You searched for: Author black Remove constraint Author: black Publication year rev 7987-2013 Remove constraint Publication year rev: 7987-2013 Subject term corn Remove constraint Subject term: corn Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Are Kenyan farmers under-utilizing fertilizer? Implications for input intensification strategies and research

Author:
Roy Black,   et al.   ; Megan Sheahan; T.S. Jayne;     Show all 3 Authors
Source:
Food policy 2013 v.41 pp. 39-52
ISSN:
0306-9192
Subject:
corn; farmers; fertilizer rates; mineral fertilizers; nitrogen; profitability; research planning; surveys; Kenya
Abstract:
... It is widely perceived that African farmers are under-utilizing inorganic fertilizer. However, very little long-term evidence from farmers’ fields, accounting for variations in agro-ecological conditions, has been assembled to back this claim or determine the conditions under which it is true. Using five waves of nationwide household survey data from Kenya covering 13years, we estimate the relativ ...
DOI:
10.1016/j.foodpol.2013.04.008

2. Potential impact of CO₂ leakage from Carbon Capture and Storage (CCS) systems on growth and yield in maize

Author:
Colin Black,   et al.   ; Manal Al-Traboulsi; Sofie Sjögersten; Jeremy Colls; Michael Steven;     Show all 5 Authors
Source:
Plant and soil 2013 v.365 no.1-2 pp. 267-281
ISSN:
0032-079X
Subject:
Zea mays; adventitious roots; air temperature; carbon; chlorophyll; corn; correlation; crop yield; leaves; seeds; shoots; soil; soil quality; stems; vegetation
Abstract:
... AIMS: Anthropogenic release of CO₂ is an important factor in the continuing rise in mean global temperature. Carbon capture and storage (CCS) offers a promising technology to capture and sequester CO₂ in deep geological reservoirs. In view of the possible impact of leakage from CCS systems on vegetation, we examined the effects of elevated soil [CO₂] on growth and yield in Zea mays L. METHODS: Mai ...
DOI:
10.1007/s11104-012-1390-5

3. Risk of dietary magnesium deficiency is low in most African countries based on food supply data

Author:
Colin R. Black,   et al.   ; Edward J. M. Joy; Scott D. Young; E. Louise Ander; Michael J. Watts; Martin R. Broadley;     Show all 6 Authors
Source:
Plant and soil 2013 v.368 no.1-2 pp. 129-137
ISSN:
0032-079X
Subject:
selenium; wheat; dietary minerals; traditional foods; risk; Estimated Average Requirement; males; balance sheet; phytic acid; calcium; nutrient deficiencies; corn; nutrient databanks; Food and Agriculture Organization; absorption; magnesium; food availability; World Health Organization; crops; Burkina Faso; Eritrea; Malawi
Abstract:
... Background: Dietary mineral deficiencies are widespread in Africa. Our previous studies in Malawi revealed population-level shortfalls in dietary calcium and selenium supply but adequate dietary magnesium (Mg) supply. Here we examine dietary Mg supply throughout Africa. Methods: Food supply data from 1961 to 2007 were compiled using Food and Agriculture Organization (FAO) Food Balance Sheets (FBSs ...
DOI:
10.1007/s11104-012-1388-z