American Journal of Bioscience and Bioengineering

Volume 9, Issue 6, December 2021

  • Prevalence of Yellow Rust at Minjar, Basonawarena and Moretenajihur District of North Shewa Zone, Ethiopia

    Ashagre Asnakew

    Issue: Volume 9, Issue 6, December 2021
    Pages: 151-155
    Received: 12 October 2021
    Accepted: 11 November 2021
    Published: 17 November 2021
    Abstract: Stripe (Yellow) rust caused by Puccinia striiformis f.sp. tritici (Pst) is important wheat diseases causing serious damage on cultivated wheat variety. The wheat yellow rust assessment was conducted in the main rainy season of 2018/19 at Minjar, Basonawarena and Moretnajihur using “Z” method of diseases assessment. Disease and agro-eological data w... Show More
  • Impact of Climate Change on Horticultural Crops Production and Quality: A Review

    Alemnew Muchie, Fikirte Assefa

    Issue: Volume 9, Issue 6, December 2021
    Pages: 156-161
    Received: 24 October 2021
    Accepted: 12 November 2021
    Published: 19 November 2021
    Abstract: Climate change decreases the global agriculture production and also affects production of Horticulture crops. Horticultural crops are highly perishable and very sensitive to unpredictable climate change. Abiotic stress includes temperature, drought, flooding, outbreak of insect increase and Carbon dioxide concentration. During recent years many res... Show More
  • Preparation and Antioxidant Activities of New Di-Amino-Schiff Base Derivatives of Chitosan

    Zhimei Zhong, Guangnan Zhu, Zhihong Zhao, Haijie Li, Zhenting Zhang

    Issue: Volume 9, Issue 6, December 2021
    Pages: 162-168
    Received: 18 October 2021
    Accepted: 24 November 2021
    Published: 2 December 2021
    Abstract: The damage caused by reactive oxygen radicals to the body is huge, and it can lead to aging of the human body and cause the occurrence of many diseases. Therefore, finding new antioxidant substance is urgent. In order to obtain new non-toxic antioxidant reagent, 3 kinds of di-amino-Schiff base derivatives of chitosan were prepared by grafting urea ... Show More
  • Nitrogen Uptake and Use Efficiency of Wheat (Triticum aestivum L.) Varieties as Influenced by Combined Application of Vermicompost and Nitrogen Fertilizer Rate

    Negessa Gadisa, Tesfaye Wakgari

    Issue: Volume 9, Issue 6, December 2021
    Pages: 169-178
    Received: 17 November 2021
    Accepted: 6 December 2021
    Published: 24 December 2021
    Abstract: Crop management strategies that improve nitrogen use efficiency and increase profits while reducing the detrimental effects on the environment due to loss of nitrogen fertilizer. A study was conducted in 2019 cropping season to evaluate effectiveness of vermicompost, N fertilizer and their combinations in improving nitrogen uptake and nitrogen use ... Show More