{"title":"ASSESSMENT OF BURLEY TOBACCO NITROGEN NEEDS FOLLOWING COVER CROPPING AND MANURE APPLICATION","authors":"J. Vaughan, Greg D. Hoyt, A. G. Wollum","doi":"10.3381/1959.1","DOIUrl":null,"url":null,"abstract":"Abstract Nitrogen (N) fertilizer recommendations for burley tobacco (Nicotiana tabacum) seldom are adjusted to compensate for available N supplied when cover crops and/or animal manures are part of the cropping system. A field study was initiated to assess i) N availability from cover crops and manures to burley tobacco, ii) response of burley tobacco to N fertilizer provided by cover crops or manures, and iii) the usefulness and adaptability of soil testing and/or plant analysis for evaluating the supplemental fertilizer N needs of burley tobacco. The experimental design was a split-plot with fallow, crimson clover (Trifolium incarnatum), hairy vetch (Vicia villosa), rye (Secale cereale), and rye + hairy vetch cover crops and fall-applied and spring-applied manure as main plot treatments and five fertilizer N rates ranging from 0 to 200 kg N ha−1 in 50 kg N ha−1 increments as split-plot treatments. Soil and tobacco petioles were sampled in the 0 kg N ha−1 check plots during the growing season to determin...","PeriodicalId":10257,"journal":{"name":"中国烟草科学","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"中国烟草科学","FirstCategoryId":"1091","ListUrlMain":"https://doi.org/10.3381/1959.1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Abstract Nitrogen (N) fertilizer recommendations for burley tobacco (Nicotiana tabacum) seldom are adjusted to compensate for available N supplied when cover crops and/or animal manures are part of the cropping system. A field study was initiated to assess i) N availability from cover crops and manures to burley tobacco, ii) response of burley tobacco to N fertilizer provided by cover crops or manures, and iii) the usefulness and adaptability of soil testing and/or plant analysis for evaluating the supplemental fertilizer N needs of burley tobacco. The experimental design was a split-plot with fallow, crimson clover (Trifolium incarnatum), hairy vetch (Vicia villosa), rye (Secale cereale), and rye + hairy vetch cover crops and fall-applied and spring-applied manure as main plot treatments and five fertilizer N rates ranging from 0 to 200 kg N ha−1 in 50 kg N ha−1 increments as split-plot treatments. Soil and tobacco petioles were sampled in the 0 kg N ha−1 check plots during the growing season to determin...
当覆盖作物和/或动物粪便作为种植系统的一部分时,白肋烟(Nicotiana tabacum)的氮肥推荐用量很少调整以补偿速效氮的供应。为评价覆盖作物和肥料对白肋烟氮素的有效性,白肋烟对覆盖作物和肥料提供的氮肥的响应,以及土壤试验和/或植物分析对评价白肋烟氮素补充需求的有效性和适应性,开展了田间研究。试验设计以休耕、红三叶草(Trifolium incarnatum)、毛叶紫薇(Vicia villosa)、黑麦(seale cereale)和黑麦+毛叶紫薇为覆盖作物,以秋施和春施有机肥为主要小区处理,5种氮肥施氮量为0 ~ 200 kg N ha - 1,以50 kg N ha - 1为增量,分小区处理。在0 kg N ha−1对照区,在生长季节取样土壤和烟草叶柄,以确定