Matches in SemOpenAlex for { <https://semopenalex.org/work/W2040763350> ?p ?o ?g. }
Showing items 1 to 72 of
72
with 100 items per page.
- W2040763350 endingPage "1048" @default.
- W2040763350 startingPage "1041" @default.
- W2040763350 abstract "Methodology was developed utilizing remote sensing techniques to separate and quantitatively measure the various components of alfalfa (Medicago sativa L.) fields containing void areas as well as short grass and weeds. Infrared color film was exposed over mixed hay fields in the Carp and Vernon regions of eastern Ontario in the spring of 3 successive yr (1974–1976). Ground observations were made to ascertain field conditions to confirm the location and the interpretation of dense or sparse alfalfa, tall or short grass, weeds and void areas on the photographs. In 12 representative fields, the percentage of alfalfa, grass and void areas was determined for each year by image area measurements based on optical densities of the photographs. Analysis of soil and alfalfa root samples from these fields confirmed the absence of the root rot pathogen Phytophthora megasperma Drechs. or any other fungi pathogenic to alfalfa. Saprophytic species of Fusarium and Pythium were prevalent in each field. The genera of nematodes found in the samples were not considered harmful to alfalfa. Therefore, an estimated 14% loss of alfalfa was attributed to winter injury during the 3-yr period. The amount of grass increased by 28% and void areas decreased by 14% in these fields." @default.
- W2040763350 created "2016-06-24" @default.
- W2040763350 creator A5044190422 @default.
- W2040763350 creator A5060099553 @default.
- W2040763350 creator A5085813566 @default.
- W2040763350 date "1978-10-01" @default.
- W2040763350 modified "2023-09-23" @default.
- W2040763350 title "ALFALFA DECLINE AND ITS CAUSE IN MIXED HAY FIELDS DETERMINED BY AERIAL PHOTOGRAPHY AND GROUND SURVEY" @default.
- W2040763350 cites W1494688157 @default.
- W2040763350 cites W1966356960 @default.
- W2040763350 cites W2005058691 @default.
- W2040763350 cites W2016624193 @default.
- W2040763350 cites W2037866702 @default.
- W2040763350 cites W2127847749 @default.
- W2040763350 cites W2151482239 @default.
- W2040763350 cites W659205892 @default.
- W2040763350 doi "https://doi.org/10.4141/cjps78-159" @default.
- W2040763350 hasPublicationYear "1978" @default.
- W2040763350 type Work @default.
- W2040763350 sameAs 2040763350 @default.
- W2040763350 citedByCount "5" @default.
- W2040763350 crossrefType "journal-article" @default.
- W2040763350 hasAuthorship W2040763350A5044190422 @default.
- W2040763350 hasAuthorship W2040763350A5060099553 @default.
- W2040763350 hasAuthorship W2040763350A5085813566 @default.
- W2040763350 hasConcept C100544194 @default.
- W2040763350 hasConcept C106191032 @default.
- W2040763350 hasConcept C144027150 @default.
- W2040763350 hasConcept C2778867309 @default.
- W2040763350 hasConcept C2780100698 @default.
- W2040763350 hasConcept C2780644372 @default.
- W2040763350 hasConcept C2992847057 @default.
- W2040763350 hasConcept C3018814304 @default.
- W2040763350 hasConcept C31903555 @default.
- W2040763350 hasConcept C39432304 @default.
- W2040763350 hasConcept C6557445 @default.
- W2040763350 hasConcept C70262065 @default.
- W2040763350 hasConcept C86803240 @default.
- W2040763350 hasConceptScore W2040763350C100544194 @default.
- W2040763350 hasConceptScore W2040763350C106191032 @default.
- W2040763350 hasConceptScore W2040763350C144027150 @default.
- W2040763350 hasConceptScore W2040763350C2778867309 @default.
- W2040763350 hasConceptScore W2040763350C2780100698 @default.
- W2040763350 hasConceptScore W2040763350C2780644372 @default.
- W2040763350 hasConceptScore W2040763350C2992847057 @default.
- W2040763350 hasConceptScore W2040763350C3018814304 @default.
- W2040763350 hasConceptScore W2040763350C31903555 @default.
- W2040763350 hasConceptScore W2040763350C39432304 @default.
- W2040763350 hasConceptScore W2040763350C6557445 @default.
- W2040763350 hasConceptScore W2040763350C70262065 @default.
- W2040763350 hasConceptScore W2040763350C86803240 @default.
- W2040763350 hasIssue "4" @default.
- W2040763350 hasLocation W20407633501 @default.
- W2040763350 hasOpenAccess W2040763350 @default.
- W2040763350 hasPrimaryLocation W20407633501 @default.
- W2040763350 hasRelatedWork W1991837284 @default.
- W2040763350 hasRelatedWork W2040763350 @default.
- W2040763350 hasRelatedWork W2065898960 @default.
- W2040763350 hasRelatedWork W2113939180 @default.
- W2040763350 hasRelatedWork W2114981815 @default.
- W2040763350 hasRelatedWork W2268392708 @default.
- W2040763350 hasRelatedWork W2387583508 @default.
- W2040763350 hasRelatedWork W3033854872 @default.
- W2040763350 hasRelatedWork W3146850388 @default.
- W2040763350 hasRelatedWork W3186673080 @default.
- W2040763350 hasVolume "58" @default.
- W2040763350 isParatext "false" @default.
- W2040763350 isRetracted "false" @default.
- W2040763350 magId "2040763350" @default.
- W2040763350 workType "article" @default.