A Case Study of Value Generation with Intelligent Well Technology in a High Productivity, Thin Oil Rim Reservoir

The potential cost of environmental certification to vegetation management in plantation forests: a New Zealand case study

Canadian Journal of Forest Research ◽

10.1139/x11-022 ◽

2011 ◽

Vol 41 (5) ◽

pp. 986-993 ◽

Cited By ~ 10

Author(s):

Carol A. Rolando ◽

Michael S. Watt ◽

Jerzy A. Zabkiewicz

Keyword(s):

New Zealand ◽

Cost Effective ◽

Vegetation Management ◽

Rate Of Return ◽

Internal Rate Of Return ◽

Mechanical Control ◽

Vegetation Control ◽

High Productivity ◽

Plantation Forests

Plantation forests certified by the Forest Stewardship Council have restrictions on herbicide use. Since certified plantations are dependant on herbicides for cost-effective vegetation management, compliance requires a shift from current chemical practices. Using New Zealand plantation forests as a case study, discounted cash flow analyses were used to estimate the cost of certification-compliant vegetation control regimes compared with current non-compliant methods. We examined methods that (i) reduce the quantity of herbicides by using spot control and (ii) avoid the use of herbicides by using weed mats, manual, and mechanical control. Cost analyses were undertaken for low-, medium-, and high-productivity sites. The internal rate of return of the non-compliant regime was between 5% and 5.8% across the productivity range. Spot control was cheaper than current non-compliant practice. However, spot control is limited by site suitability and the availability of labour. Non-chemical control methods were expensive relative to other regimes. Reductions in the internal rate of return varied across low- and high-productivity sites between 0.8% and 0.5% for manual control, 1.3% and 0.8% for mechanical control, and 1.7% and 1.0% for weed mats. Meeting the goals of certification while retaining cost-effective vegetation control presents a challenge to the plantation forestry sector.

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Departicipation of Youth in Agricultural Sector (Case Study at Delanggu Village, Delanggu, Klaten)

Forum Geografi ◽

10.23917/forgeo.v15i2.4573 ◽

2016 ◽

Vol 15 (2) ◽

pp. 194

Author(s):

D Dilahur ◽

U Umrotun ◽

P Priyono ◽

Choirul Amin ◽

M. Farid Aminudin

Keyword(s):

Data Analysis ◽

Young People ◽

Qualitative Data ◽

Agricultural Sector ◽

Survey Method ◽

High Productivity ◽

Quantitative Data Analysis ◽

Quota Sampling

This study is carried out in Delanggu, Klaten, that has high productivity of rice but undergoing a decrease in the role of the sector of agriculture. The goal of this study is to observe young people departicipation in the sector od agriculture and fators that influence it. The method used is survey method. The population is all of the young people in Delanggu, 1.419 peoples. The sampling uses stratified proporsional quota sampling where respondents are divided into three groups of age, 15-19 years old, 20-24 years old, and 25-29 years old. Every sampling in eah group is taken 5% proportionally, with its homogenates consideration, while the characteristic, which has determined in order to fulfil the number of determined quota in each age group. Collected data is presented in the form of frequency and cross table. Qualitative data analysis uses logical thought, deducyive-inductive, analogy ang comparison, whereas analyzing frequency and cross table uses quantitative data analysis. The use of both analysis is adjusted to the data and goal of the study.

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