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Book Stand and Soil Responses of a Loblolly Pine Plantation to Midrotation Fertilization and Vegetation Control

Download or read book Stand and Soil Responses of a Loblolly Pine Plantation to Midrotation Fertilization and Vegetation Control written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study wasconducted in a 14-year-old midrotation loblolly pine (Pinus taeda L.) plantation to assess the effects of fertilizationand vegetation control (a) on soil net nitrogen mineralization, (b) litterdecomposition and (c) foliar nutrient concentrations and use, and vegetationgrowth. Fertilization (none, 224 kg haP) and vegetation control (none, complete) treatments were applied in a 2x2factorial design in March 1998. Soil net nitrogen mineralization was assessedby monthly field and laboratory incubations, litter decomposition and nutrient(N, P K, Ca, Mg, S, Mn, Zn, B, Cu) release dynamics were determined by thelitterbag method, foliar nutrient use of pines and hardwoods was estimated fromlitterfall and foliar nutrient concentrations, and growth was determined basedon annual measurements of diameter and height. Field net N mineralization rateswere 19, 18, 31, and 78 kg ha for control (C, notreatment), fertilization (F), vegetation control (VC), and vegetation controlplus fertilization (VC+F) treatments, respectively. Relative treatments responseswere similar in the laboratory incubations. Litter mass loss duringdecomposition was reduced by 9% after 32 months by vegetation control, andfertilization had no effect. The mobility of the nutrients was as follows: Cud"d"

Book Two year Responses of Loblolly and Slash Pine Plantations to Midrotation Fertilization and Vegetation Control

Download or read book Two year Responses of Loblolly and Slash Pine Plantations to Midrotation Fertilization and Vegetation Control written by North Carolina State Forest Nutrition Cooperative and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Factors Influencing Responses of Loblolly Pine Stands to Fertilization

Download or read book Factors Influencing Responses of Loblolly Pine Stands to Fertilization written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Preparing Atlantic Coastal Plain Sites for Loblolly Pine Plantations

Download or read book Preparing Atlantic Coastal Plain Sites for Loblolly Pine Plantations written by William H. McKee and published by . This book was released on 1989 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Inter Rotational Effects of Fertilization and Weed Control Treatments on the Productivity and Soil Nutrient Availability in Juvenile Loblolly Pine Plantations

Download or read book Inter Rotational Effects of Fertilization and Weed Control Treatments on the Productivity and Soil Nutrient Availability in Juvenile Loblolly Pine Plantations written by Praveen Subedi and published by . This book was released on 2013 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: On a north Florida Spodosol, the inter-rotational effects of fertilization and weed control treatments on the productivity, understory community dynamics, and soil respiration rates in loblolly pine (Pinus taeda (L.)) stands were investigated using two replicated, randomized complete block design experiments The first rotation treatments were: control (C), fertilizer (F), weed control (W), and fertilizer+weed control (FW). One experiment was actively retreated as in the previous rotation, while the second was left untreated (CC, CF, CW, and CFW). A common full-sib loblolly pine family was planted in both experiments. After three growing seasons, the second rotation pine growth consistently out-performed the first rotation. The actively retreated FW treatment had 4-fold higher aboveground pine biomass than the C (7.7 Mg.ha-1) treatment; the untreated CF (17.9 Mg.ha-1) treatment had 1.5-fold higher pine biomass than the CFW treatment. Lower growth response in the CFW treatment was associated with lower soil P availability (r = 0.8; p

Book Ten year Growth and Foliar Responses of Midrotation Loblolly Pine Plantations to Nitrogen and Phosphorus Fertilization

Download or read book Ten year Growth and Foliar Responses of Midrotation Loblolly Pine Plantations to Nitrogen and Phosphorus Fertilization written by North Carolina State Forest Nutrition Cooperative and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Seasonal and Cumulative Loblolly Pine Development Under Two Stand Density and Fertility Levels Through Four Growing Seasons

Download or read book Seasonal and Cumulative Loblolly Pine Development Under Two Stand Density and Fertility Levels Through Four Growing Seasons written by James D. Haywood and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book General Technical Report Southern Research Station

Download or read book General Technical Report Southern Research Station written by and published by . This book was released on 1995 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Loblolly Pine

    Loblolly Pine

    Book Details:
  • Author : Robert P. Schultz
  • Publisher : U.S. Government Printing Office
  • Release : 1997
  • ISBN :
  • Pages : 516 pages

Download or read book Loblolly Pine written by Robert P. Schultz and published by U.S. Government Printing Office. This book was released on 1997 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: