Phosphorus Fertilization in Young Loblolly Pine Stands
Title | Phosphorus Fertilization in Young Loblolly Pine Stands PDF eBook |
Author | |
Publisher | |
Pages | 74 |
Release | 1984 |
Genre | Loblolly pine |
ISBN |
Seasonal and Cumulative Loblolly Pine Development Under Two Stand Density and Fertility Levels Through Four Growing Seasons
Title | Seasonal and Cumulative Loblolly Pine Development Under Two Stand Density and Fertility Levels Through Four Growing Seasons PDF eBook |
Author | James D. Haywood |
Publisher | |
Pages | 12 |
Release | 1994 |
Genre | Loblolly pines |
ISBN |
Soil and Foliar Guidelines for Phosphorus Fertilization of Loblolly Pine
Title | Soil and Foliar Guidelines for Phosphorus Fertilization of Loblolly Pine PDF eBook |
Author | |
Publisher | |
Pages | 20 |
Release | 1973 |
Genre | Forest soils |
ISBN |
Factors Influencing Responses of Loblolly Pine Stands to Fertilization
Title | Factors Influencing Responses of Loblolly Pine Stands to Fertilization PDF eBook |
Author | |
Publisher | |
Pages | |
Release | 2004 |
Genre | |
ISBN |
Fertilization of pine plantations has increased dramatically in the last decade. Over 600,000 hectares are being fertilized annually to overcome chronic widespread nitrogen (N) and phosphorus (P) limitations. However, responses to fertilization vary widely since specific responses after fertilization for any particular stand will be the result of complex interactions of nutrients and rates applied, stand and site conditions at time of application, years since application, and climatic conditions after application. Stand, soil and forest floor (FF) responses to fertilizations were assessed at three different sites located in the 'flatwoods' area of southeast Georgia and northeast Florida after five years of repeated fertilizer additions. Significant leaf area index (LAI), stemwood growth and FF responses were found at all three sites. Leaf area index was double for some treated plots as compared to control plots (from 1.4 to 3.0), five year cumulative growth on treated plots almost tripled that of the control plots (32 to 89 cubic meter per hectare). Soil N availability increased dramatically soon after fertilization however, it decreased few months after application. Several nutrients affected growth at these three sites, N and P at all three sites and potassium (K) and manganese (Mn) at the Georgia study sites. Factors affecting growth efficiency (GE) of loblolly pine plantations across the southeast were examined using 86 studies sites with different climatic, edaphic and stand conditions. Two modeling approaches were developed, one where GE would change with levels of LAI (non-linear using Gompertz model) and a second where GE was independent of the level of LAI (linear model), in both cases significant reduction in RMSE (>200%) was achieved when parameters in the models were allowed to be functions of edaphic, climatic and stand characteristics. In conclusion, GE is a dynamic rather than static stand parameter; it changes with stand age, drainage, soil texture a.
Soil Testing as a Guide to Phosphorus Fertilization of Young Pine Plantations in the Coastal Plain
Title | Soil Testing as a Guide to Phosphorus Fertilization of Young Pine Plantations in the Coastal Plain PDF eBook |
Author | R. Ballard |
Publisher | |
Pages | 28 |
Release | 1975 |
Genre | Phosphatic fertilizers |
ISBN |
Response of Young Loblolly Pine to Nitrogen, Phosphorus, and Potassium Fertilization
Title | Response of Young Loblolly Pine to Nitrogen, Phosphorus, and Potassium Fertilization PDF eBook |
Author | North Carolina State Forest Nutrition Cooperative |
Publisher | |
Pages | |
Release | 1997 |
Genre | Loblolly pine |
ISBN |
The Effects of Nitrogen and Phosphorus Fertilizer on a Young Loblolly Pine Plantation on Lignite Mine Spoil in East Texas
Title | The Effects of Nitrogen and Phosphorus Fertilizer on a Young Loblolly Pine Plantation on Lignite Mine Spoil in East Texas PDF eBook |
Author | Martin Andrew Shupe |
Publisher | |
Pages | 234 |
Release | 1986 |
Genre | Loblolly pine |
ISBN |