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A general methodology for applied agricultural research based on a systems approach

, : A general methodology for applied agricultural research based on a systems approach. Una metodologia general de investigacion agricola aplicada basada en el enfoque sistemas: 24

The paper is based on the methodology developed in the project on cultivation systems for small farmers in Central America initiated by the Centro Agronomico Tropical de Investigacion y Ensenanza. The discussion assumes that the geographical area for research has already been determined and that research will have certain objectives such as improving production, income, food supply, employment and productivity.


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Zhang, F.; Shi, W.; Luo, J.; Pellet, N.; Yi, C.; Li, X.; Zhao, X.; Dennis, T.John.S.; Li, X.; Wang, S.; Xiao, Y.; Zakeeruddin, S.Mohammed.; Bi, D.; Grätzel, M., 2017: Isomer-Pure Bis-PCBM-Assisted Crystal Engineering of Perovskite Solar Cells Showing Excellent Efficiency and Stability. A fullerene derivative (α-bis-PCBM) is purified from an as-produced bis-phenyl-C<sub>61</sub> -butyric acid methyl ester (bis-[60]PCBM) isomer mixture by preparative peak-recycling, high-performance liquid chromatography, and is emplo...

Gosain, A.; Markison, R.E.; Schecter, W.P., 1987: Temporary colostomy for trauma. A new method to simplify colostomy closure. A technique for construction of a functional loop colostomy is described for the management of colonic injuries in which complete fecal diversion is not required. The colostomy and mucous fistula are converted into a functional loop colostomy at t...

Khattak S.U.; Howell J.F., 1987: Soy a substitute ingredient for casein in the codling moth larval rearing medium. In the wheat germ .sbd. casein larval diet of the codling moth, Cydia pomonella (L.), casein was replaced with soya using 0, 50, 100 and 200 g soya per treatment formulation. The results evaluated on the basis of larval survival, pupal recovery, p...

Kristensen N.P., 1989: The new zealand scorpionfly nannochorista philpotti new combination wing morphology and its phylogenetic significance. The wing structure of the New Zealand nannochoristid currently known as Microchorista philpotti (Tillyard, 1917) is described and discussed. Tubular wing vein sclerotizations are developed in the upper wing cuticle only. Shortening of the hindwing...

Popov V.I., 1939: O nakozhdenii analogov karnotitovykh peschanikov v severnoy Fergane. Notes the discovery of sands in northern Fergana, Siberia, resembling carnotite sands.

Walker J.D., 1990: Chemical fate bioconcentration and environmental effects testing proposed testing and decision criteria. Chemicals should have a minimum amount of available chemical fate, bioconcentration, and environmental effects data to identify those chemicals with potentially problematic environmental partitioning or persistence, or those with potential to bioc...

Mirman, L.J.; To, T., 2005: Strategic resource extraction, capital accumulation and overlapping generations. The standard resource extraction framework assumes infinitely lived agents and yields an overfishing result. For some applications, a finite time horizon may be more appropriate. A direct extension of the Levhari-Mirman model to overlapping genera...

Rico, M.; Egelhoff, T.T., 2001: Myosin Heavy Chain Kinase B contributes to regulation of myosin assembly into the cytoskeleton in Dictyostelium discoideum. Molecular Biology of the Cell 12(Supplement): 442a, Nov

Siquig Richard A.; Hoyt Douglas V., 1980: Sunspot structure and the climate of the last one hundred years. Pages 63-67 1980

Anonymous, 2016: RSPH policy update. Perspectives in Public Health 136(6): 317-317