International: Metcalfe Institute for Marine and Environmental Reporting, University of Rhode Island, Graduate School of Oceanography, Office of Marine Programs, Narragansett, RI.
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 167 Document Number: C27893
5 PAGES., Released in late 2020, the Center Pivot Fertigation Calculator is designed to help producers make more precise fertilizer applications by assisting in calculating liquid fertilizer flow rate and injection pump settings needed to fertigate through a center pivot irrigation system. The Clemson Drip Fertigation Calculator is designed to help South Carolina vegetable producers make more precise fertilizer applications through drip irrigation systems.
After producers started using the center pivot and drip fertigation calculators, Zack Snipes, assistant program leader for the Clemson Cooperative Extension Service horticulture team and area horticulture agent, noted many were beginning to ask what they should do if using a greenhouse-grade solid fertilizer and putting it into a solution. In response, Rob Last, area horticulture agent, built a spreadsheet that became the basis for the Liquid Fertilizer Solution Calculator.
“We have created a system that provides quick calculations and is really easy to use,” Last said. “Anyone who has questions about these calculators can contact me or Zack and we’ll help them.”
36 pages., via online journal., This article examines the challenges facing agriculture in Africa. First the article outlines agriculture’s connection with overall economic growth; then, the author evaluates agricultural productivity and food security in Africa in 2010. From this point, the author evaluates the advantages and disadvantages of seven paths that African agriculture is likely to evolve along between now and 2050: five for Sub-Saharan African and two for North Africa. In Sub-Saharan Africa, the types of farming proposed are: extensive, mechanized; intensive export; intensive peri-urban; subsistence; and reserves, game ranching, and tourism. In North Africa, the author proposes: irrigated and rainfed. In order to realize the most positive benefits of these paths in 2050, Africa has to tackle six challenges, outlined by the author: reducing population growth, promoting irrigation, adapting the role of the state, promoting the acceleration of technical change (including fertilizer and biotechnology), and preparing for climate change. Increasing the competitiveness of Africa’s commercial farming will improve income, inequality, and nutrition across the continent.
