Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000670332> ?p ?o ?g. }
Showing items 1 to 90 of
90
with 100 items per page.
- W2000670332 abstract "Crop models have been useful for identifying underlying causes of yield variability and evaluating managementprescriptions. However, estimating the spatial soil inputs required to calibrate crop models to historic yields has proven tobe challenging and time consuming. Currently, calibration techniques require excessive computer time when applied overmany grid points within a field, and procedures for estimating unknown inputs are not well defined. The objectives of thisresearch were: (1) to develop an efficient procedure for estimating spatially variable soil properties for theCROPGROSoybean model, and (2) to demonstrate its use in diagnosing areas in the field where excess water or water stressreduce soybean yield.A study was conducted for a 12ha field in Linn County, Iowa, using soybean data collected during two years (1996 and1998). Yield, soil type, topography, and soil characterization data were used to estimate spatial variations in soil drainagefactors (saturated hydraulic conductivity of an impeding layer and tile drainage spacing), water availability (SCS curvenumber and maximum rooting depth), and a soil fertility factor. A procedure was developed to create a database of predictedyields for combinations of coefficients, and to search the database using rules based on soil classification, drainage class,and topography to guide the parameter estimation process. When rules based on drainage class were used, theCROPGROSoybean model explained 45% to 70% of the yield variability for 1996 and 1998, respectively. When rules basedon soil water availability, drainage characteristics, and topography were used, good predictions were obtained in both years(r2 = 0.70 for 1996 and 0.80 for 1998), and RMSE was 2.8% of grid level yields. The data base approach required less thanhalf the time that simulated annealing required for the field with 48 grids." @default.
- W2000670332 created "2016-06-24" @default.
- W2000670332 creator A5045841901 @default.
- W2000670332 creator A5046592236 @default.
- W2000670332 creator A5067468840 @default.
- W2000670332 creator A5073767179 @default.
- W2000670332 date "2001-01-01" @default.
- W2000670332 modified "2023-09-26" @default.
- W2000670332 title "ESTIMATING SPATIALLY VARIABLE SOIL PROPERTIES FOR APPLICATION OF CROP MODELS IN PRECISION FARMING" @default.
- W2000670332 doi "https://doi.org/10.13031/2013.6424" @default.
- W2000670332 hasPublicationYear "2001" @default.
- W2000670332 type Work @default.
- W2000670332 sameAs 2000670332 @default.
- W2000670332 citedByCount "42" @default.
- W2000670332 countsByYear W20006703322012 @default.
- W2000670332 countsByYear W20006703322014 @default.
- W2000670332 countsByYear W20006703322015 @default.
- W2000670332 countsByYear W20006703322016 @default.
- W2000670332 countsByYear W20006703322017 @default.
- W2000670332 countsByYear W20006703322018 @default.
- W2000670332 countsByYear W20006703322020 @default.
- W2000670332 countsByYear W20006703322022 @default.
- W2000670332 crossrefType "journal-article" @default.
- W2000670332 hasAuthorship W2000670332A5045841901 @default.
- W2000670332 hasAuthorship W2000670332A5046592236 @default.
- W2000670332 hasAuthorship W2000670332A5067468840 @default.
- W2000670332 hasAuthorship W2000670332A5073767179 @default.
- W2000670332 hasConcept C105795698 @default.
- W2000670332 hasConcept C118518473 @default.
- W2000670332 hasConcept C120217122 @default.
- W2000670332 hasConcept C127313418 @default.
- W2000670332 hasConcept C134121241 @default.
- W2000670332 hasConcept C159390177 @default.
- W2000670332 hasConcept C159750122 @default.
- W2000670332 hasConcept C164285268 @default.
- W2000670332 hasConcept C166957645 @default.
- W2000670332 hasConcept C187320778 @default.
- W2000670332 hasConcept C18903297 @default.
- W2000670332 hasConcept C191897082 @default.
- W2000670332 hasConcept C192562407 @default.
- W2000670332 hasConcept C205649164 @default.
- W2000670332 hasConcept C33923547 @default.
- W2000670332 hasConcept C3742959 @default.
- W2000670332 hasConcept C39432304 @default.
- W2000670332 hasConcept C63184880 @default.
- W2000670332 hasConcept C67592535 @default.
- W2000670332 hasConcept C76886044 @default.
- W2000670332 hasConcept C86803240 @default.
- W2000670332 hasConcept C94747663 @default.
- W2000670332 hasConceptScore W2000670332C105795698 @default.
- W2000670332 hasConceptScore W2000670332C118518473 @default.
- W2000670332 hasConceptScore W2000670332C120217122 @default.
- W2000670332 hasConceptScore W2000670332C127313418 @default.
- W2000670332 hasConceptScore W2000670332C134121241 @default.
- W2000670332 hasConceptScore W2000670332C159390177 @default.
- W2000670332 hasConceptScore W2000670332C159750122 @default.
- W2000670332 hasConceptScore W2000670332C164285268 @default.
- W2000670332 hasConceptScore W2000670332C166957645 @default.
- W2000670332 hasConceptScore W2000670332C187320778 @default.
- W2000670332 hasConceptScore W2000670332C18903297 @default.
- W2000670332 hasConceptScore W2000670332C191897082 @default.
- W2000670332 hasConceptScore W2000670332C192562407 @default.
- W2000670332 hasConceptScore W2000670332C205649164 @default.
- W2000670332 hasConceptScore W2000670332C33923547 @default.
- W2000670332 hasConceptScore W2000670332C3742959 @default.
- W2000670332 hasConceptScore W2000670332C39432304 @default.
- W2000670332 hasConceptScore W2000670332C63184880 @default.
- W2000670332 hasConceptScore W2000670332C67592535 @default.
- W2000670332 hasConceptScore W2000670332C76886044 @default.
- W2000670332 hasConceptScore W2000670332C86803240 @default.
- W2000670332 hasConceptScore W2000670332C94747663 @default.
- W2000670332 hasIssue "5" @default.
- W2000670332 hasLocation W20006703321 @default.
- W2000670332 hasOpenAccess W2000670332 @default.
- W2000670332 hasPrimaryLocation W20006703321 @default.
- W2000670332 hasRelatedWork W1964679753 @default.
- W2000670332 hasRelatedWork W2062126432 @default.
- W2000670332 hasRelatedWork W2066066025 @default.
- W2000670332 hasRelatedWork W2068521851 @default.
- W2000670332 hasRelatedWork W2183155958 @default.
- W2000670332 hasRelatedWork W2267584387 @default.
- W2000670332 hasRelatedWork W2323375764 @default.
- W2000670332 hasRelatedWork W2561639363 @default.
- W2000670332 hasRelatedWork W2623772905 @default.
- W2000670332 hasRelatedWork W2958299127 @default.
- W2000670332 hasVolume "44" @default.
- W2000670332 isParatext "false" @default.
- W2000670332 isRetracted "false" @default.
- W2000670332 magId "2000670332" @default.
- W2000670332 workType "article" @default.