Forest Fertilization Research Articles

The Role of Fertilization in Intensive Forest Management

Abstract Changing land-use patterns and increasing demands for wood fiber necessitate maximizing wood production, particularly from industrial holdings. Forest fertilization is a practice essential to meeting this goal. Since 1969, nearly 100,000 acres of pine forests on Union Camp land have been fertilized, including treatment of established stands and preplanting applications. Objectives, expected results, and operating guidelines are discussed.

Suggestions for ‘Automatic Forest Fertilisation’ by a Wind-Operated System

A system is suggested whereby a large area may be automatically fertilised by regular small applications. There is also the possibility of distributing insecticides or fungicides at minimal cost. The system consists of a high steel mast, a rotary atomiser, a wind driven generator, storage tanks and various control devices.

Studies on briquetted IBDU in practice of forest fertilization (II)

Studies on briquetted IBDU in practice of forest fertilization (II)

Forest Fertilization in Ireland

Fertilizers have been in operational use in Irish forestry for almost 25 years. At present, 12 000-16 000 ha of forest land are fertilized annually. Deficiencies of nitrogen and phosphorus are widely encountered, particularly in Sitka spruce (Picea sitchensis (Bong.) Carr.) on infertile peatland sites. Forest fertilization research in Ireland has been centered, to a large extent, on the nutrition of this species on peat soils. Current work on mineral soils includes the investigation of the response to fertilizers on moderately fertile sites. Preliminary results indicate that phosphatic fertilizers may be effective in these situations.

DISCRIMINATIORY ANALYSIS OF LAND-USE IN AICH PREFECTURE

The purpose of this paper is to deduce the optimal land-use type from the viewpoint of regional planning. The whole area of Aichi Prefecture was divided into 5, 142 standard meshes (grids), and for each mesh, 17 variables were examined to determine the types of land-use. Adopted variables are as followings; A. Physiographic factors: (1) elevation, (2) relief energy (land relief) (3) drainage density (density of valleys) (4) gradient of land, (5) practically utilizable amounts of ground water, (6) potential of ground water, (7) fertility of farm land, and (8) fertility of forest. B. Distance factors: time-distace to, (1) Nagoya, (2) regional centers, (3) freight terminals, (4) railway stations, and (5) highway interchanges. C. Social factors: (1) forest reservation, (2) improved faun land, (3) irrigated up-land fields, and (4) density of road networks. Five types of land-use (residential, commercial, industrial, agricultural, and forestal) were predesigned by factorial analysis. These types were individually diiend by control-ling the difinite amounts of area coverage in a mesh. The satisfied meshes (grids) were named here “typical”. By this procedure, 1, 037 meshes were accounted for “typical” ones and their numbers corresponding to each type of land-use were shown in Table 1. The ratio of discriminant power is accounted for 87.7 percent. The discriminant functions were listed in Table 2. The largest discriminant scores for each mesh were culculated employing those functions and they were utilized for the computer mapping (Figure 1).

Evaluation of the consequences for future tree productivity of the loss of nutrients in whole-tree harvesting

The advent of fibre farming (total utilization of tree crops grown on short rotations) raises the spectre of soil impoverishment on many forest sites. Although forest fertilization may be the answer in some situations, nutrient management will almost certainly become an important aspect of forest management in the future. Evaluation of the consequences for future tree productivity of the loss of nutrients in harvested materials is difficult. It requires a variety of types of information, and in many situations we are not yet in a position to make predictions with confidence. This paper reviews some of the more important questions that must be asked and answered in arriving at reliable conclusions concerning the significance of harvest-induced nutrient losses.

Forest Soil and Its Fertilization in Trolical Rain Forest : Forest Fertilization at Sotek in East Karimantan

Forest Soil and Its Fertilization in Trolical Rain Forest : Forest Fertilization at Sotek in East Karimantan

Urea fertilization of natural forest: Effects on water quality

Urea at the rate of 150 kg N/ha was applied by helicopter to a 120 ha watershed covered with a natural stand of balsam fir ( Abies balsamea Mill.), white spruce ( Picea glauca Moench.) and paper birch ( Betula papyrifera Marsh.), 80 km from Quebec City. Two-thirds of the area was treated in June, and the remainder in September, the control area was an adjacent comparable watershed. Abundant rainfall coincided with the application. In stream water, urea was identified only at trace levels during the 48 hours following fertilization. Ammonium concentrations and conductivity increased significantly during the 10–15 days following application. Small changes were observed concerning other parameters studied. Urea fertilization did not considerably alter water quality.

Effects of Timber Harvesting and Related Management Practices on Water Quality in Forested Watersheds

AbstractUndisturbed forested watersheds are generally recognized as a primary source of high‐quality water. The physical and chemical nature of these waters fluctuate constantly in response to natural stresses but are most influenced by man's activities. Three major forest land management activities—timber harvesting, fertilization, and herbiciding—which may have an adverse affect on water quality are reviewed. In general, research results indicate that nutrient losses, particularly nitrogen, following forest clearcutting are small to negligible. Similarly, forest fertilization studies indicate that nitrogen concentrations in streams are not drastically increased. Large areal applications of selected herbicides in the West have demonstrated that, if carefully applied, they can be used without impairment of water quality.

Effects of Forest Fertilization on Two Southeast Alaska Streams

AbstractFour streams in southeast Alaska were studied to determine the effects of forest fertilization with urea on basic productivity and water quality.An initial, short‐term increase in ammonia‐nitrogen was observed in the treated streams, and nitrate‐nitrogen levels increased and remained high compared to control stream levels during the year following treatment. Concentrations did not approach those considered toxic to aquatic life or unsafe for human consumption. Changes in biomass of periphyton and benthic fauna as a result of fertilization were not detected.

Nutrient Content of Fertilized Deer Browse in Maine

Nutrient Content of Fertilized Deer Browse in Maine

Phosphorus Retention in Coastal Plain Forest Soils: II. Significance to Forest Fertilization

AbstractPhosphorus retention of 42 forest soils collected from the US Southeastern Coastal Plain was found to be significantly correlated with Al and Fe extracted by soils tests for available phosphorus. Aluminum provided better indices of P retention than Fe extracted by these tests and it accounted for more than 81% of the variation in P retention in the case of the NH4OAc (pH 4.8), 0.03N NH4F + 0.025N HCl, or 0.03N NH4F + 0.1N HCl tests.Concentrations of Fe and Al in the foliage of 4‐year old slash pine (Pinus elliottii Engelm. var. ‘elliottii’) growing on these soils were significantly correlated with soil P retention. However, foliar Fe, the most closely correlated, accounted for only 26% of the variation in P retention.Retention of P from concentrated superphosphate applied at the equivalent 56 or 224 kg P/ha 4 years previously to young slash pine was measured to 20 cm depth at 10 sites, and ranged from −14 to +125%. Retention was almost independent of application rate. Extractable Al values corresponding to 50% retention of the applied P were 40, 330, 400, and 120 ppm for NH4OAc, 0.03N NH4F + 0.025N HCl, 0.03N NH4F + 0.1N HCl, and 0.05N HCl + 0.025N H2SO4 extractions, respectively. It is proposed that in the interest of maintaining long‐term growth responses and minimizing possible pollution effects, these values be used for delineating soils of low P retention where less soluble sources of P, such as rock phosphate, should be used if P fertilization is required.

The symposium on the forest Fertilization On fertilization in established stands

The symposium on the forest Fertilization On fertilization in established stands

The relation of forest fertilization to disease incidence

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Forest Fertilization

EcologyVolume 52, Issue 6 p. 1132-1133 Article Forest Fertilization Mark Behan, Search for more papers by this author Mark Behan, Search for more papers by this author First published: 01 November 1971 https://doi.org/10.2307/1933825AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume52, Issue6November 1971Pages 1132-1133 RelatedInformation

An Integrated Ordination-Classification Analysis of an Intensively Sampled Oak-Hickory Forest

relate the structure to the environment, and develop means of comparing systems. The key to successful synthetic modelling lies in understanding the complex structure of the ecosystem. This structure involves a very large number of interrelated variables and parameters. Hence a good analytic model is a prerequisite for any attempt to create a synthetic model. Our work has been directed toward comparing several quantitative classification methods and combining several classification and ordination techniques into a unified analytic modelling strategy. We have shown how the different techniques complement one another and thus produce a clearer analytic model than any one technique could produce by itself. Another example of the use of complementary techniques is the recent work in the analysis of tropical rainforests (Williams et al. 1969). We have applied the techniques to vegetation data collected during the initial characterization of Walker Branch Watershed. The watershed is a monitored ecosystem on which the secondary effects of forest fertilization are to be studied (Curlin & Nelson 1968). Our goal was to determine whether stands of similar species composition existed which could be used to define vegetation groups. These groups could then be used to make the sampling and study of processes more efficacious.

'Kiwi' strips make for efficient forest fertilization

'Kiwi' strips make for efficient forest fertilization

A comparison of the growth and nutrition ofPicea abies (L.) karst. andPinus resinosa ait. On a K-deficient site subjected to K fertilization

On the oldest continuously studied forest fertilization trials in North America, at Pack Forest in New York State, a pronounced tree growth response has been attained with only K fertilization.

Forest Fertilization

Forest Fertilization

Forest Fertilization—Theory and Practice

Published by Tennessee Valley Authority, National Fertilizer Development Center, Muscle Shoals, Alabama.