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Fukuda, S

Cook, D

Culman, S

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Authors

Deenik, J

Fukuda, S

Hamasaki, R

Shimabuku, R

Uchida, R

Webb, B

Hopkins, B

Pletsch, M

Cook, D

Vickery, M

Jolley, V

Culman, S

Topics

Invited Oral Presentation

Type

Oral

Year

2007

2009

2025

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Filter results3 paper(s) found.
1. Comparing Nutrient Availability in Low Fertility Soils Using Ion Exchange Resin Capsules and Plant Bioavailability Under Greenhouse Conditions Commonly used soil resin analysis procedures have generally been developed to determine nutrient levels in agriculture soils. The purpose of the resin capsule procedure is to determine the amount of nutrient that correlates to that which is plant available. Desert soils contain lower levels of nutrients than agricultural soils, thus the validity of using resin capsules for desert soils is uncertain. In a previous incubation study it was determined that ion exchange resin capsules can be used as... B. Webb, B. Hopkins, M. Pletsch, D. Cook, M. Vickery, V. Jolley Download paper
2. Soil Testing to Improve Phosphorus Management on Intensive Vegetable Farms in Hawaii According to a recent survey of soil samples sent to the Agricultural Diagnostic Service Center (ADSC) at the University of Hawaii between October 2002 and September 2003, a majority of the samples showed soil test P (STP) levels in the high or excessive categories. Despite high soil test P, many farmers in Hawaii continue to apply P fertilizers. We began a project to evaluate soil P status on a range of vegetable farms throughout the state, to determine crop response to P fertilizers on soils... J. Deenik, S. Fukuda, R. Hamasaki, R. Shimabuku, R. Uchida Download paper
3. Speculation on an Equation for Stratification: How Reliably Can We Estimate Soil Test Values at Different Depths? The depth to which soil is sampled in a field impacts measured soil test values. However, across the West, depth of soil sampling can vary by state, region and cropping system. What if we're interested in comparing crop responses to fertilizer application across a large scale? How do we reconcile trials that are sampled at different soil depths? This study was part of the Fertilizer Recommendation Support Tool (FRST) project, with the goal to develop equations that allowed comparison... S. Culman

Filter results3 paper(s) found.

1. Comparing Nutrient Availability in Low Fertility Soils Using Ion Exchange Resin Capsules and Plant Bioavailability Under Greenhouse Conditions

Commonly used soil resin analysis procedures have generally been developed to determine nutrient levels in agriculture soils. The purpose of the resin capsule procedure is to determine the amount of nutrient that correlates to that which is plant available. Desert soils contain lower levels of nutrients than agricultural soils, thus the validity of using resin capsules for desert soils is uncertain. In a previous incubation study it was determined that ion exchange resin capsules can be used as... B. Webb, B. Hopkins, M. Pletsch, D. Cook, M. Vickery, V. Jolley

Download paper

2. Soil Testing to Improve Phosphorus Management on Intensive Vegetable Farms in Hawaii

According to a recent survey of soil samples sent to the Agricultural Diagnostic Service Center (ADSC) at the University of Hawaii between October 2002 and September 2003, a majority of the samples showed soil test P (STP) levels in the high or excessive categories. Despite high soil test P, many farmers in Hawaii continue to apply P fertilizers. We began a project to evaluate soil P status on a range of vegetable farms throughout the state, to determine crop response to P fertilizers on soils... J. Deenik, S. Fukuda, R. Hamasaki, R. Shimabuku, R. Uchida

Download paper

3. Speculation on an Equation for Stratification: How Reliably Can We Estimate Soil Test Values at Different Depths?

The depth to which soil is sampled in a field impacts measured soil test values. However, across the West, depth of soil sampling can vary by state, region and cropping system. What if we're interested in comparing crop responses to fertilizer application across a large scale? How do we reconcile trials that are sampled at different soil depths? This study was part of the Fertilizer Recommendation Support Tool (FRST) project, with the goal to develop equations that allowed comparison... S. Culman