scholarly journals Planting configuration affects productivity, tree form and survival of mallee eucalypt in farm forestry plantings

2020 ◽  
Author(s):  
Beren Spencer ◽  
John Bartle ◽  
Amir Abadi ◽  
Mark Gibberd ◽  
Ayalsew Zerihun
Keyword(s):  
Farm Forestry ◽  
Tree Form

ON-FARM FORESTRY DEVELOPMENT OPTIONS FOR NORTHLAND

1986 ◽  
pp. 27-32
Author(s):  
J.S. Clark
Keyword(s):  
Joint Ventures ◽  
Low Fertility ◽  
High Fertility ◽  
Financial Returns ◽  
Farm Forestry ◽  
Hill Country ◽  
Financial Position ◽  
On Farm

Agroforests and woodlots offer Northland hill country farmers investment and diversification opportunities. Agroforests have less effect on the "whole farm" financial position than woodlots, especially where a progressive planting regime is adopted and where no further borrowing is required. Establishment and tending costs for agro-forests are lower, and returns come much sooner. The proven opportunity for continued grazing under trees established in this manner, apart from a short post-planting period, further enhances the agroforesty option. Even where there is reluctance on a farmer's part to plant trees on high fertility land, the expected financial returns from agroforests on low and medium fertility land will increase the overall long-term profitability and flexibility of the whole farming operation. Woodlots may be more appropriate on low fertility areas where weed reversion is likely. Joint ventures may be worth considering where farm finances are a limited factor. Keywords: On-farm forestry development, Northland hill country, agroforestry, woodlots, diversification, joint ventures, progressive planting regimes, grazing availability.

THE ECONOMICS OF FORESTRY VERSUS PASTURE

1971 ◽  
pp. 18-25
Author(s):  
J.B. Jackman
Keyword(s):  
Sheep Grazing ◽  
Farm Forestry ◽  
Tax Returns

The post-tax returns/acre/annum of farm woodlot scale forestry are compared with sheep siocked at 5 stock units/acre. The results are presented as a break-even timber value. This is the paint at which returns from forestry and farming are equal, thereby implying that farm forestry would be more profitable than sheep grazing at timber values above the breakeven.

Fruit mass, colour and yield of ‘Honeycrisp’™ apples are influenced by manually-adjusted fruit population and tree form

2006 ◽  
Vol 81 (3) ◽  
pp. 397-401 ◽  
Author(s):  
A. H. Wright ◽  
C. G. Embree ◽  
D. S. Nichols ◽  
R. K. Prange ◽  
P. A. Harrison ◽  
...  
Keyword(s):  
Tree Form ◽  
Fruit Mass

Incorporating Additional Tree and Environmental Variables in a Lodgepole Pine Stem Profile Model

1993 ◽  
Vol 8 (3) ◽  
pp. 86-90
Author(s):  
John C. Byrne
Keyword(s):  
Environmental Variables ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Linear Equations ◽  
The United States ◽  
National Forest ◽  
Data Sets ◽  
Tree Form ◽  
Northern Rocky Mountains ◽  
Profile Model

Abstract A new variable-form segmented stem profile model is developed for lodgepole pine (Pinus contorta) trees from the northern Rocky Mountains of the United States. I improved estimates of stem diameter by predicting two of the model coefficients with linear equations using a measure of tree form, defined as a ratio of dbh and total height. Additional improvements were obtained by fitting this model to individual national forest data sets. Other tree and environmental variables tested but found of little use in improving stem profile estimates were crown ratio, habitat series, elevation, slope percent, and aspect. West. J. Appl. For. 8(3):86-90.

scholarly journals Prospek Partisipasi Petani dalam Program Pembangunan Hutan Rakyat untuk Mitigasi Perubahaan Iklim di Wonosobo

2011 ◽  
Vol 25 (1) ◽  
pp. 85
Author(s):  
Evi Irawan
Keyword(s):  
Climate Change ◽  
Climate Change Mitigation ◽  
Farm Forestry ◽  
Factors Affecting ◽  
Forestry Management ◽  
Ex Ante ◽  
Forestry Project ◽  
Farmer Education ◽  
Past Experiences ◽  
Change Mitigation

Past experiences indicate that the success of many farm forestry projects is mainly influenced by farmers’ participation. Ex ante estimation of the likelihood of farmers’ participation in a particular farm forestry project might reduce the risk of project failure. This article is to analyze, ex ante, factors affecting a farmer’s participation in a hypothetical farm forestry project for climate change mitigation based upon a survey data of 117 farm forestry farmers in Tempurejo Village, Wonosobo Regency. Logit estimation suggests that the likelihood of a farmer’s participation is likely affected by age of farmer, education, farm household size and farmer’s experience in farm forestry business. Two policies implication of these findings are that government should increase farmers’ knowledge of climate change through extension programs, such as climate field school, and align the design of farm forestry projects for climate change mitigation with the prevailing farm forestry management system practiced by farmers.

scholarly journals Long-term effects of plant spacing on the growth and morphometry of Bertholletia excelsa

2021 ◽  
Vol 51 (3) ◽  
pp. 181-190
Author(s):  
Rafael Gonçalves de OLIVEIRA ◽  
Alex Soares de SOUZA ◽  
Victor Alexandre Hardt Ferreira dos SANTOS ◽  
Roberval Monteiro Bezerra de LIMA ◽  
Marciel José FERREIRA
Keyword(s):  
Average Diameter ◽  
Fruit Production ◽  
High Survival ◽  
Plant Spacing ◽  
Long Term Effects ◽  
Bertholletia Excelsa ◽  
Tree Form ◽  
Tree Crowns ◽  
Growth Space

ABSTRACT Plant spacing is a potential driver of tree form and yield in forest plantations. However, its effects on the productivity of tree plantations in the Amazon are still little known. This study examined the effects of six spacing regimes (3 x 4, 4 x 4, 4 x 5, 5 x 5, 5 x 6, and 6 x 6 m) on the growth and morphometry of a 20-year-old plantation of Bertholletia excelsa. We observed high, spacing-independent survival (> 70%). For timber production purposes, intermediate and two large spacing regimes tended to higher values of yield components, mainly diameter, biomass, and volume, although some did not differ significantly from the smallest spacing. One of the intermediate spacings (5 x 5 m) tended to higher commercial height. Tree crowns tended to be wider and longer in the larger spacings, which indicates the potential of these regimes for fruit production. Tree crowns exceeded the vital growth space in all spacing regimes, which suggests the need for thinning before the age of 20 years in all spacings to reduce intraspecific competition and increase yield. We estimated that a density of 84 remaining trees per hectare would be necessary to reach an average diameter of 40 cm at the age of 20 years. Thus, B. excelsa had high survival in the tested range of spacing regimes, while the intermediate and the largest spacing regimes led to better tree growth and morphometry.

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