Pinus taeda L. response to fertilization, herbaceous plant control, and woody plant control

Tiarks, Allan E.; Haywood, James D.

doi:10.1016/0378-1127(86)90095-2

Cited by 48 publications

(38 citation statements)

References 4 publications

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“…In contrast, Austin and Strand [2] reported a positive growth response to urea-formaldehyde and triple-super phosphate fertilization only when weed control was applied; they added fertilizer to the hole at planting. Similar interactive effects have been identified in other forest environments [12,33,36,39].…”

Section: Interaction Of Treatmentssupporting

confidence: 80%

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Interaction of initial seedling diameter, fertilization and weed control on Douglas-fir growth over the first four years After Planting

Rose

Ketchum

2003

Ann. For. Sci.

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-Planting larger stock, fertilization and added years of weed control are often employed to increase growth rate of plantations. We evaluated these techniques using a replicated factorial study design repeated in two diverse locations in western Washington State, USA. Two different sizes of planting stock, fertilizing at planting and in the following year, and two or three years of weed control were tested. No significant interactions among the treatment levels were found with all treatments influencing Douglas-fir growth in an additive manner. Fourth year stem volume gains were greatest from planting larger initial stock: planting seedlings 2 mm larger in basal diameter resulted in fourth-year stem volume gains of 35% and 43%. The fertilization treatments used produced early gains, but they were short lived. The third-year weedcontrol treatment had no observable effect on fourth-year stem volume or on volume growth in years three or four. free-to-grow / herbicide / controlled-release fertilizer / nutritionRésumé -Interaction du diamètre au collet initial des plants, de la fertilisation et du contrôle de la végétation concurrente avec la croissance du Douglas pendant les quatre années suivant la plantation. Pour accélérer la croissance des plantations, on fait souvent appel à des techniques telles que l'emploi de plants plus gros, la fertilisation ou le contrôle de la végétation concurrente pendant plusieurs années. Nous avons évalué ces techniques au moyen de dispositifs factoriels avec répétitions installés dans deux stations de l'ouest de l'État de Washington aux USA. On a testé les options suivantes : deux catégories de plants pour leurs dimensions, fertilisation à la plantation et l'année suivante, et deux ou trois ans de contrôle de la végétation concurrente. Aucune interaction significative entre traitements n'a pu être mise en évidence. Tous les traitements agissant sur la croissance du Douglas le font de manière additive. La quatrième année, les gains de volume des tiges sont les plus élevés avec le matériel végétal initial le plus gros. Avec des plants dont le diamètre au collet est de 2 mm plus élevé, on obtient la quatrième année des gains sur le volume de tige de 35 et 43 %. Les traitements de fertilisation utilisés se sont traduits par des gains au départ, mais de courte durée. Le contrôle de la végétation de la troisième année n'a pas eu d'effet observable sur le volume des tiges de la quatrième année ou sur la croissance en volume des années trois et quatre. croissance libre / herbicide / épandage contrôlé de fertilisation / nutrition

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Section: Interaction Of Treatmentssupporting

confidence: 80%

“…The response to early fertilization has been less consistent, with examples of positive, negative, or mixed 626 R. Rose, J.S. Ketchum responses reported by a number of investigators [5,7,23,29,39,40].…”

Section: Introductionmentioning

confidence: 99%

Interaction of initial seedling diameter, fertilization and weed control on Douglas-fir growth over the first four years After Planting

Rose

Ketchum

2003

Ann. For. Sci.

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“…Other researchers have also reported gains in individual loblolly pine tree growth associated with phosphorus fertilization on Aquult and Udult Ultisols (Gent et al 1986;Tiarks and Haywood 1986). However, the actual gains in volume in this study were small (5 to 7 dm3/tree), and the probability of future success on similar sites might be less than 50% (Allen 1987) (Tables 1 and 3).…”

Section: Resultsmentioning

confidence: 41%

Phosphorus fertilizer, soils, and site preparation influence loblolly pine productivity

Haywood

Burton

1990

New Forest

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Application.Forest managers wishing to rapidly produce large individual pole-size loblolly pine trees should consider phosphorus fertilization with mechanical site preparation prior to planting on Udult Ultisols. If maximizing total stand volume is the primary objective, no simple recommendations can be made because of the confounding effects of soil types and site preparation methods on stand survival and yield. Fertilizer recommendations for maximizing total stand volume will have to be made on a case by case basis with considerable risk of failure.Abstract. Growth and yield of 12-year-old loblolly pine (Pinus taeda L.) plantations were compared among five subsoil textures, seven site preparation methods, with and without phosphorus fertilizer. Phosphorus broadcast before planting increased the mean size of the loblolly pine trees. However, soil differences significantly influenced stand survival, and the method of site preparation significantly affected total stand yield. Therefore, the influence of phosphorus on total stand yield depended on soil type and site preparation method. The site preparation-fertilizer combinations yielding the most volume per soil type were: on the Lucy, Ruston, and Wagram soils, shear-windrow site preparation with phosphorus; on the Kirvin and Shubuta soils, chop-burn-harrow site preparation without phosphorus; on the Calloway and Henry soils, double chopping without phosphorus; on the Sawyer soil, chopburn-harrow site preparation with phosphorus; and on the Boswell, Cadeville, Gore, and Susquehanna soils, shear-windrow-harrow site preparation without phosphorus. Soil differences and phosphorus fertilization influenced the incidence of fusiform rust in 12-year-old stands of loblolly pine.

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“…Cultural practices applied at planting may produce dramatic results (Tiarks and Haywood, 1986) that fade by the time of first thinning ). In the case of Study 1, results at age 8 were showing a 0.7-m response from bedding and were reported with cautious optimism (Mann and Derr, 1970).…”

Section: Discussionmentioning

confidence: 99%

Site Preparation and Fertilization Effects on Growth of Slash Pine for Two Rotations

Tiarks

Haywood

1996

Soil Science Soc of Amer J

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Two replicated site preparation studies were used to examine the effect of management on pine height and volume growth in the next rotation on Paleudults. Treatments included no tillage, flat disking, bedding, and fertilization. The first rotation of planted slash pine (pinus ellionii Engelm. var. dioftii) was measured for 15 yr on one site and 20 yr at the other, harvested, and replanted without additional tillage. The second rotations were measured for 10 yr. At one site, 100 kg ha-' P was applied to each rotation as a treatment variable. At one site, disking before the first rotation increased pine heights. Bedding before the first rotation increased pine heights at both sites. In the second rotation, the response was reversed, with pines planted on beds being the shortest. The P fertilization increased heights in both rotations hut did not affect response to tillage. 'Ike P as well as N, applied only at age 7 in the second rotation, had a negative effect on the second rotation's volume, probably hecause of increased competition from shrubs and other understory plants. Across both sites and for all treatments, IO-yr-old slash pines averaged 7% less in height and 24% less in volume in the second rotation. These differences are statistically significant. Analysis at age 10 from both rotations indicates stable foliar concentrations of P and Ca, declining K, and increasing Mn and Al.

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Pinus taeda L. response to fertilization, herbaceous plant control, and woody plant control

Cited by 48 publications

References 4 publications

Interaction of initial seedling diameter, fertilization and weed control on Douglas-fir growth over the first four years After Planting

Interaction of initial seedling diameter, fertilization and weed control on Douglas-fir growth over the first four years After Planting

Phosphorus fertilizer, soils, and site preparation influence loblolly pine productivity

Site Preparation and Fertilization Effects on Growth of Slash Pine for Two Rotations

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