Rapid tissue tests as indicators of yield, plant composition, and soil fertility for corn and soybeans

Syltie, Paul W.; Melsted, S. W.; Walker, William J.

doi:10.1080/00103627209366348

Cited by 24 publications

(4 citation statements)

References 8 publications

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“…Tissue NO] concentrations declined with age. Syltie et al (1972) reported significant correlations between soil N fertility status and corn sap NO] content determined with a qualitative quick test. Rauschkolb et al (1974) also found significant correlations between tissue NO] concentrations and corn yield and proposed a critical (for maximum yield) stalk N03 concentration of4 to 6 g NO]-N kg-1 at 35 days after emergence (DAE).…”

mentioning

confidence: 97%

The Relationships of Nitrate Concentrations in Young Corn Stalks to Soil Nitrogen Availability and Grain Yields¹

Iversen¹,

Fox²,

Piekielek

1985

Agronomy Journal

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The importance of N in crop production makes accurate estimation of the available N in the soil desirable, especially with increasing costs of N fertilizers and concern for environmental hazards associated with excessive fertilization. Although several soil N availability indices have been developed, none of those tested has had wide success in Pennsylvania. A 2-yr study was conducted in central Pennsylvania to determine if nitrate (NO)) analysis of young corn plants (Ze11 mllys L.) was significantly related to soil N availability. The N03 contents of basal stalks were determined weekly for several weeks after emergence in two N fertilizer response experiments in 1982 and 1983. The soil in sites in 1982 and 1983 were Murrill silt loam, a Typic Hapludult, and Hagerstown silt loam, a Typic Hapludalf, respectively. Stalk N03 -N increased with increasing N fertilizer rates. The effect of plant age on stalk N03 concentration varied between the 2 yr, probably due to hail damage or available water differences. Differences in stalk NO) among N fertilizer treatments increased with time in both years. The optimum time for sampling appeared to be approximately 30 days after emergence (DAE). Correlations of stalk N03 at this time with relative grain yield and N uptake were significant (r>0.94) both years. Based on regression lines, at approximately 30 DAE, the critical concentration of stalk N03-N (for 95% of the plateau yield) was about 11 g N03-N kg-• in 1982, and 16 g N03-N kg-• in 1983. Combined data from both years had a significant but lower correlation (r=0.754) between stalk N03 and relative grain yield, with an apparent critical concentration of 15.7 g N03-N kg-•. The potential for predicting soil N availability from NO] tissue testing appears possible if the environmental factors that affect tissue NO] accumulation can be identified and quantified.

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mentioning

confidence: 97%

The Relationships of Nitrate Concentrations in Young Corn Stalks to Soil Nitrogen Availability and Grain Yields¹

Iversen¹,

Fox²,

Piekielek

1985

Agronomy Journal

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“…Another approach to diagnosing K status is to analyze the K content of plant sap. Sap is extracted by pressing plant tissue with tools such as a pliers (Syltie et al 1972), a garlic press (Gangaiah et al 2016), or a press attached to a syringe (Burns and Hutsby 1984). Freshly sampled petioles and leaf midribs are the typical samples.…”

Section: Potassium Content In Plant Sapmentioning

confidence: 99%

“…Unless the color matches perfectly with that of a standard, the user must interpolate concentrations between two adjacent color standards (Burns and Hutsby 1984). With test strips or spot tests, there is a limited range of detection, and the user cannot infer values beyond either end of that range (Syltie et al 1972). When sampling sap, it is important to recognize that its chemical composition changes throughout the day.…”

Section: Potassium Content In Plant Sapmentioning

confidence: 99%

Evaluating Plant Potassium Status

Murrell

Pitchay

2020

Improving Potassium Recommendations for Agricultural Crops

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Several methods exist for evaluating plant nutritional status. Looking for visual deficiency symptoms is perhaps the simplest approach, but once symptoms appear, crop performance has already been compromised. Several other techniques have been developed. All of them require correlation studies to provide plant performance interpretations. Reflectance is a remote sensing technique that detects changes in light energy reflected by plant tissue. It has proven successful in detecting nutrient deficiencies but does not yet have the ability to discriminate among more than one deficiency. Chemical assays of leaf tissue, known as tissue tests, require destructive sampling but are the standard against which other assessments are compared. Sufficiency ranges provide concentrations of each nutrient that are considered adequate for crop growth and development. They consider nutrients in isolation. Other approaches have been developed to consider how the concentration of one nutrient in tissue impacts the concentrations of other nutrients. These approaches strive to develop guidelines for maintaining nutrient balance within the plant. All approaches require large data sets for interpretation.

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“…the laboratory and the determination done on extracts from either fresh (Ulrich 1948) or dried (8OOC) and ground plant material (Baker and Smith 1969). In the field, nitrate in plant sap can be determined using Bray's Nitrate Powder (Syltie et al 1972), or with Mercko-quant test strips, a procedure recommended by Scaife and Stevens (1983). Keeney and Nelson (1982) have an excellent review article on the methods of determining nitrates.…”

Section: Tissue Testingmentioning

confidence: 99%

Soil Testing and Plant Analysis: Guides to the Fertilization of Horticultural Crops

Jones

1985

Horticultural Reviews

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Rapid tissue tests as indicators of yield, plant composition, and soil fertility for corn and soybeans

Cited by 24 publications

References 8 publications

The Relationships of Nitrate Concentrations in Young Corn Stalks to Soil Nitrogen Availability and Grain Yields¹

The Relationships of Nitrate Concentrations in Young Corn Stalks to Soil Nitrogen Availability and Grain Yields¹

Evaluating Plant Potassium Status

Soil Testing and Plant Analysis: Guides to the Fertilization of Horticultural Crops

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Rapid tissue tests as indicators of yield, plant composition, and soil fertility for corn and soybeans

Cited by 24 publications

References 8 publications

The Relationships of Nitrate Concentrations in Young Corn Stalks to Soil Nitrogen Availability and Grain Yields1

The Relationships of Nitrate Concentrations in Young Corn Stalks to Soil Nitrogen Availability and Grain Yields1

Evaluating Plant Potassium Status

Soil Testing and Plant Analysis: Guides to the Fertilization of Horticultural Crops

Contact Info

Product

Resources

About

The Relationships of Nitrate Concentrations in Young Corn Stalks to Soil Nitrogen Availability and Grain Yields¹

The Relationships of Nitrate Concentrations in Young Corn Stalks to Soil Nitrogen Availability and Grain Yields¹