Now showing items 8630-8646 of 8646

    • Yaupon Holly Cultivars 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Yaupon Holly Cultivars, Ilex vomitoria.
    • Yaupon Holly Cultivars (Ilex vomitoria) 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2018-10-26)
      Provides information about the physical characteristics, growth requirements, and landscape functions for several cultivars of Yaupon Holly, Ilex vomitoria.
    • Yellow Ants 

      Day, Eric R.
    • Yellow Corn in Virginia - Spring 2016 

      Reiter, Mark S.; Frame, William Hunter, 1985-; Thomason, Wade Everett; Reiter, Scott; Spencer, Janet (Virginia Cooperative Extension, 2016-10-10)
      Discusses the status of corn plants in spring 2016 in Virginia. Many of the plants were noted as stunted and yellowed. Reasons for this include colder than average spring temperatures, wet soils, lack of sunshine, nutrient ...
    • Yews, Taxus spp. 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2018-11-22)
      Provides information about species of yews (Taxus), their plant needs and landscape uses.
    • Yews, Taxus spp. 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2010-11-03)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Yews, Taxus.
    • Yield and soil system changes from conservation tillage in dryland farming: A case study from North Eastern Tanzania 

      Enfors, E.; Barron, J.; Makurira, H.; Rockström, J.; Tumbo, S. (Elsevier, 2011)
      Conservation agriculture (CA) and its related practices of soil cover, cover crops, and reduced-tillage have often been touted as an effective means of in situ water harvesting, which provides stable yields in times of low ...
    • Yield effects of genetically modified crops in developing countries 

      Qaim, M.; Zilberman, D. (2003)
      Onfarm field trials carried out with Basillus thuringenesis (Bt) cotton in different states of India show that the technology substantially reduces pest damage and increases yields. The yield gains are much higher than ...
    • Your terroir and my 'action space': Implications of differentiation, mobility and diversification for the approche terroir in Sahelian West Africa 

      Painter, T.; Sumberg, J.; Price, T. (1994)
      This article addresses the question of whether the aménagement/gestion de terroir approach, as it is currently being promoted by government and development organizations in the French-speaking countries of Sahelian West ...
    • Youth Leadership Program 

      Yager, Kristina A. (Virginia Tech, 2017-12-13)
      Providing elementary students with meaningful opportunities to learn and practice essential leadership skills can benefit youth and the society in which they will grow, live and contribute. Based on the idea that youth ...
    • Yuccas, Yucca spp. 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2018-11-23)
      Provides information about species of Yucca, their plant needs and landscape uses.
    • Yuccas, Yucca spp. 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2010-11-03)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Yuccas, Yucca.
    • Zambia Conservation Agriculture Programme (CAP) - a brief update 

      Conservation Farming Unit (Conservation Farming Unit, 2010)
      This presentation compares conventional systems and conservation agriculture practices in Zambia. Because of continuous soil disturbance from ploughing with oxen, the top soil is often exposed, which contributes to poor ...
    • Zambia: Community Markets for Conservation (COMACO) 

      WCS (2007-12-13)
      In Zambia's Luangwa Valley, WCS is encouraging farmers to use wildlife-friendly practices through a rural development model called Community Markets for Conservation (COMACO). Although not a very direct incentive scheme ...
    • Zero tillage development in tropical Brazil: The story of a successful NGO activity 

      Landers, J.N. (Wageningen, Netherlands: Wageningen University and Research Centre, 2001)
    • Zoospore interspecific signaling promotes plant infection by Phytophthora 

      Kong, P; Tyler, BM; Richardson, PA; Lee, BWK; Zhou, ZS; Hong, C (Biomed Central Ltd, 2010-12-07)
      Background Oomycetes attack a huge variety of economically and ecologically important plants. These pathogens release, detect and respond to signal molecules to coordinate their communal behaviors including the infection ...