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Canadian Journal of Agricultural Science最新文献

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Influence of the Composition of Parent Materials on Soil Formation in Manitoba1 曼尼托巴省母质组成对土壤形成的影响
Canadian Journal of Agricultural Science Pub Date : 2016-08-23 DOI: 10.2136/SSSASPECPUB1.C19
W. A. Ehrlich, H. M. Rice, J. H. Ellis
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引用次数: 2
Leaf Measurements as a Means of Identification of Peach Varieties in Nursery Trees1 苗木桃品种鉴定的叶片测量方法
Canadian Journal of Agricultural Science Pub Date : 1954-01-01 DOI: 10.14288/1.0106323
K. Lapins, C. Hornby
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引用次数: 0
The Relation of Lignin, Cellulose, Protein, Starch and Ether Extract to the “Curing” of Range Grasses1 木质素、纤维素、蛋白质、淀粉和醚提取物与禾草“熟化”的关系
Canadian Journal of Agricultural Science Pub Date : 1953-01-01 DOI: 10.1016/s0042-207x(54)80193-x
W. J. Pigden
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引用次数: 25
Seed Setting of Alfalfa Flowers Tripped by Bees and Mechanical Means1 蜜蜂和机械手段对紫花苜蓿种子落地的影响
Canadian Journal of Agricultural Science Pub Date : 1951-01-01 DOI: 10.5962/BHL.TITLE.142988
R. L. Pharis, J. Unrau
{"title":"Seed Setting of Alfalfa Flowers Tripped by Bees and Mechanical Means1","authors":"R. L. Pharis, J. Unrau","doi":"10.5962/BHL.TITLE.142988","DOIUrl":"https://doi.org/10.5962/BHL.TITLE.142988","url":null,"abstract":"A study was undertaken to determine the effectiveness of a locally built mechanical tripper and of leaf cutter bees, bumble bees and honey bees in bringing about tripping and seed setting in alfalfa Automatic or mechanical tripping followed by self pollination resulted in 31 6 per cent of pod formation and 1 7 seeds per pod When tripping was accompanied by cross pollination 74 8 per cent of the flowers formed pods and these pods contained an average of 4 7 seeds Bumble and leaf cutter bees tripped 90 2 and 61 0 per cent respectively of the flowers under observation In both cases the pods contained on the average 4 5 seeds which is proof that these bees cross pollinated when they tripped the flowers Honey bees were ineffective both as trippers and pollinators of alfalfa flowers There was an increase in the incidence of automatic tripping when honey bees had been in a cage for a period of five days The average number of seeds per pod under natural conditions was 4 4, proving that most of the pods set in the...","PeriodicalId":9588,"journal":{"name":"Canadian Journal of Agricultural Science","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1951-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88220704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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