American Journal of Agriculture and Forestry

Volume 6, Issue 3, May 2018

  • Species Richness and Nutritive Values of Fodder and Their Relationship with Soil Characteristics in Ugandan Rangelands

    Christine Kyoshabire, Sarah Kizza, Karumuna Rollanda

    Issue: Volume 6, Issue 3, May 2018
    Pages: 38-43
    Received: Jul. 18, 2017
    Accepted: Jul. 31, 2017
    Published: May 18, 2018
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    Abstract: A study was conducted to determine the species richness and nutritive values of fodder and their relationship with soil characteristics in the Ugandan rangelands. The aim of the study was to determine the current status and nutritive values of fodder species and their relationship with soil characteristics. Four fodder species Panicum maximum - Gui... Show More
  • Study on Map Knowledge Domains of Transgenic Maize Based on Citespace

    Xin-Tong Li, Dan-Hui Mao, Jing-Min Cheng

    Issue: Volume 6, Issue 3, May 2018
    Pages: 44-49
    Received: Apr. 01, 2018
    Accepted: Apr. 16, 2018
    Published: May 18, 2018
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    Abstract: To analyze the hotspots and trend of the study on global transgenic maize, the paper collected literature on transgenic maize from 2001 to 2018 which are included in the core journals in the database of Web science as samples and used Citespace for visual analysis of mapping knowledge domain of studies on transgenic maize, based on the bibliometric... Show More
  • Dry Matter and Nitrogen Accumulation as Affected by Nitrogen Fertilization and Seeding Rate in Winter Wheat

    Zuliang Shi, Fei Wang, Xiang Li, Jiuchen Wang, Bao Zhe, Renhua Sun, Tao Jia, Chengjun Song

    Issue: Volume 6, Issue 3, May 2018
    Pages: 50-59
    Received: Apr. 21, 2018
    Accepted: May 08, 2018
    Published: May 25, 2018
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    Abstract: [Objective] Wheat grain yield mainly comes from the accumulation and redistribution of the material after anthesis, the objectives of this study were to assess the contribution of pre- and post-anthesis dry matter, fertilizer nitrogen (N) and soil native N assimilation to grain yield of winter wheat (Triticum aestivum L.). [Method] Field experiment... Show More
  • An Evolutionary Continuity Principle for Evolutionary System of Organism Divisions

    Da-Li Fu, Hao Fu

    Issue: Volume 6, Issue 3, May 2018
    Pages: 60-64
    Received: May 18, 2018
    Accepted: Jun. 01, 2018
    Published: Jun. 25, 2018
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    Abstract: Evolutionary research is guided by the scientific basis of organism evolution. To overcome the limitations of being partial and subjective in the tree of life or phylogenetic system, the authors proposed a basic principle of organism evolution, evolutionary continuity principle. Based on this principle, the evolutions can be divided into two basic ... Show More