[{"source_document_id":17,"title":"Plums in South Dakota","url":"https://openprairie.sdstate.edu/cgi/viewcontent.cgi?article=1092&context=agexperimentsta_bulletins","rights_status":"unknown","evidence_claim_count":7,"relationship_count":0,"history_event_count":0,"sample_snippets":["Other Japanese varieties tested were winter-killed before fruiting.","The branches that fruited were killed by the succeeding hard winter.","Burbank was top-worked on De Soto in the station orchard.","The bearing instance described occurred in 1898."]},{"source_document_id":112,"title":"Pollination Studies with Stone Fruits","url":"https://sherwoods-forests.com/Downloads/UMinnAgExpStation-Stone_Fruit-Pollenation.pdf","rights_status":"unknown","evidence_claim_count":3,"relationship_count":0,"history_event_count":0,"sample_snippets":["In the broader Burbank x nine-varieties group, 24 derived varieties were summarized as mostly poor pollinizers.","In the Burbank x Kaga group, 15 varieties were tested and their pollinizer effectiveness was summarized as 4 good, 4 fair, and 7 poor.","Table 7 groups hybrid pollinizer varieties derived from Burbank used as the female parent with Kaga, De Soto, and nine additional male-parent combinations."]}]