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Showing 1 to 8 of 8 for “"Controlled Release Fertilizer"”.

  1. Criteria signaling reapplication of controlled-release fertilizer for maximum growth of Ilex crenata Thunb. 'Helleri'

    Shiflett, Melinda ColeVirginia Tech1992

    … which signal the need for reapplication of a controlled-release fertilizer (CRF) in order to maximize growth of container-grown Ilex crenata Thunb. ‘Helleri’. Rooted cuttings of ‘Helleri’ holly were initially fertilized (7 Mar. 1991) with 8-9 month (18N-2.6P-9.9K) or 12-14 month …

    vt Repository record

  2. Water and nutrient transport dynamics during the irrigation of containerized nursery crops

    Hoskins, Tyler CourtneyVirginia Tech2014

    Increased water- and fertilizer-use-efficiency in containerized crop production, via reduced water loss, enhances crop-available nutrients while reducing non-point source agrichemical contributions in accordance with regulatory standards. Previous studies detailed nutrient leaching patterns …

    vt Repository record

  3. Preservation and Deployment of Biofertilizers to Mitigate Soil Phosphorous Loss from Agricultural Systems

    Barghouti, ZeinaMassachusetts Institute of Technology2023

    … plants can synthesize. The use of phosphate-rich fertilizers has compensated for the low levels of phosphorus in agricultural systems, however, up to 95% of these fertilizers become "fixed" in the soil, causing environmental damage and reducing soil fertility. It is critical to find sustainable …

    mit Repository record

  4. Evaluating Nitrogen Containing Controlled Release Fertilizers At Stand Establishment In Loblolly Pine

    Kyle, Kevin HunterVirginia Tech2004

    … using various formulations of conventional and controlled release N fertilizers was evaluated in a greenhouse study and at two field trials in the Virginia Piedmont, in 2002 and 2003. The greenhouse study evaluated five fertilizer treatments; 1) check with no fertilizer; 2) granular ammonium …

    vt Repository record

  5. Controlling Growth in Echinacea Hybrids

    Grossman, Mara CelesteVirginia Tech2017

    … conductivity going into dormancy, 5.0 kg·m controlled release fertilizer 15N-3.9P-10K or 150 mg·L⁻¹ N using 15N-2.2P-12.5K applied using constant liquid feed, resulted in the highest survival rates of Echinacea cultivars. As a monitoring tool, SPAD measurements were not successful in …

    vt Repository record

  6. Chemical, Physical, and Biological Factors Influencing Nutrient Availability and Plant Growth in a Pine Tree Substrate

    Jackson, Brian EugeneVirginia Tech2008

    … on the response of japanese holly and azalea to fertilizer rate when grown in PTS and PB. This study demonstrated that an additional 2.4 kg·m-3 of Osmocote Plus (15N-3.9P-10K) controlled release fertilizer is required for both species when grown in PTS compared to PB. Data are reported in chapter …

    vt Repository record

  7. Nursery Production of Selected Actinorhizal Species

    Beddes, Taun D.

    utahstate Repository record

  8. Synthesis of zeolites and their application as soil amendments to increase crop yield and potentially act as controlled release fertilizers.

    Jakkula, Vijay S.University of Wolverhampton2005

    … their cation exchange capacity (CEC) and slow-release fertilizer properties. Most work on slow-release fertilizers has focused on natural Clinoptilolite, Phillipsite and Chabazite. The aim of this study was to synthesize zeolites, study their effectiveness as soil amendments and their ability …

    wlv Repository record