Author: mpaul

Categories
Pine

FPC Update #04 2014 Pine – N Volatilization

N VOLATILIZATION

This is an ongoing work on the use of stable isotopes to evaluate N volatilization and uptake efficiency  using a variety of N fertilizer sources and is part of that Jay Raymond PhD research. At the Virginia Piedmont site, the enhanced efficiency fertilizers all reduced volatilization losses with a larger effect following summer application than late winter.   Ecosystem recovery after one growing season showed between 13 and 29% of the applied N was taken up by the loblolly pine crop trees and total ecosystem N recovery was greater and the majority of the fertilizer N was in the surface mineral soil and may be available for uptake in subsequent years.

N15 Study Preliminary Results

Categories
Eucalyptus Pine

FPC Update #03 2014 – Eucalyptus Pine Brazil Zoning

EUCALYPTUS PINE BRAZIL ZONING

The Koppen Climatic classification was applied in a very fine resolution, 1 ha, for Brazil by Clayton Alvares. The publication and the raster file is available for download at FPC Website under: Data & Maps/Geodatabase/Brazil/Ecological Zoning/Koppen Zones.

Categories
Pine

FPC Update #02 2014 – Paper on N Volatilization

N VOLATILIZATION

The prepublication copy of a manuscript  “Ammonia Volatilization Following Fertilization with Urea or Ureaform in a Thinned Loblolly Pine (Pinus taeda L.) Plantation” has been accepted for publication in Soil Science Society of America Journal.  This work is part of the MS Thesis by Rob Elliott that was completed at Virginia Tech a number of years ago.  We  presented these results at FPC meetings in the past but have not published the work until now to give FPC members preferential access.  The results again demonstrate the large potential losses following application of urea, especially during the summer. They also show that enhanced efficiency fertilizers can be used to reduce volatilization losses. In this study we used a slow release fertilizer, ureaform.

We hope you find this useful.

Categories
Eucalyptus

FPC Update # 01 2014 – Coldest Artic Front in Decades and Eucalyptus

COLDEST ARTIC FRONT IN DECADES AND EUCALYPTUS

A cold Artic front is reaching the US today/tomorrow and this seems to be the “desired” test for the Eucalyptus across the SE US. As we have a special condition in Raleigh NC, we decided to share with you some pictures prior to the cold front…

Coldest Artic Front in Decades and Eucalyptus