1,721,026 research outputs found
\u3ci\u3eAgricultural Systems\u3c/i\u3e: \u3ci\u3eAgroecology and Rural Innovations for Development\u3c/i\u3e, edited by Sieglinde Snapp and Barry Pound [Book Review]
Get PDFTo welcome yet another book on sustainable development, a reviewer must look for what is unique and what adds value to the volumes already published. In Agricultural Systems, editors Sieglinde Snapp and Barry Pound have assembled a collection of chapters that goes beyond the usual praise and criticism of the green revolution and the focus on economic development. Their book provides a first-hand story by people with lengthy experiences in the field, especially in Africa, who have developed and tested grassroots, participatory development approaches. The result is a valuable set of principles, strategies and case studies that paint a new and feasible greenprint for development
Living Field Laboratory at the Kellogg Biological Station, Hickory Corners, MI (1992 to 2012)
No full textThe Living Field Laboratory is a long-term rotation study established in 1993 under the direction of Emeritus Professor Dr. Richard Harwood to evaluate the benefits of cover crops (as green manure) and/or the addition of composted dairy manure in two integrated systems compared to a conventional and an organic system. The LFL accommodates every entry point of the crop rotation each year and has a factorial design that allows for the comparison of a number of interactions. These interactions include: differences in N management, rotation effects, and cover crops. From 1993 through 2005, the rotation consisted of corn (Zea mays L.)/corn/soybean (Glycine max)/wheat (Triticum aestivum) vs. continuous corn. During this period, crimson clover (Trifolium incarnatum L.) was seeded to 1st yr. corn, 2nd yr corn was in rye grass (Lolium multiflorum), soybean had no cover, and red clover (Trifolium pretense L.) was frost-seeded into wheat. In 2006, under the direction of Dr. Sieglinde Snapp and through consultation with a farmer advisory group, the rotation was shortened to a 3 yr rotation of corn/soybean/wheat vs. continuous corn. The remaining plot in each management system was converted to a 2 yr rotation of corn/soybean. Cereal rye (Secale cereale) is now planted after corn regardless of crop rotation. Cereal rye follows soybean in the 2-yr rotation. Red clover is frost-seeded into wheat. The management systems are: Conventional, Integrated Fertilizer and Integrated Compost. Weed management is identical across systems, and nitrogen fertilizer management adjusted to take into account soil N availability and balance nitrogen inputs across treatments. The cover crop is present as a split plot (plus minus) within each system. The split-plot cover crop treatment was established in 1993 in Integrated Fertilizer and in Integrated Compost, while the split-plot cover crop treatment was established 14 years later in 2007 in the Conventional treatment, to allow a comparison of short and long-term cover crop presence. In 2007, the organic management system was changed to a comparison of a perennial grain systems (perennial wheat-alfalfa intercrop) and a 4-yr rotation of corn/soybean/wheat/ alfalfa (Medicago sativa). This allows the comparison of a typical Michigan field crop organic system to a novel system that involves a new, perennial system.
original data source http://lter.kbs.msu.edu/datasets/45 Resources in this dataset:Resource Title: Website Pointer to html file. File Name: Web Page, url: https://portal.edirepository.org/nis/mapbrowse?scope=knb-lter-kbs&identifier=42 Webpage with information and links to data files for download</p
Towards an evidence-based approach to agroecology and climate change adaptation and mitigation in low- and middle-income countries: A rapid evidence review
No full textPresented by Sieglinde Snapp, Michigan State University, on 2 June 2021, at the webinar 'Towards an evidence-based approach to agroecology and climate change adaptation and mitigation in low- and middle-income countries.'
The webinar was the second in a series, 'Building evidence for transforming agricultural innovation systems under climate change,' hosted by CCAFS & FCDO to set a path for transformation in agricultural innovation systems, in the lead up to COP26
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
TOMATO FRUIT QUALITY AND ION STATUS: THE EFFECTS OF SALINITY, PHYTOPHTHORA ROOT ROT AND GENOTYPE
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Interactive Effects of K and B on Tomato Shoulder Check, a Quality Defect in Fresh Market Tomato
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