The yield, growth and chemical composition of corn as influenced by hybrids and high rates of nitrogen, phosphorus and potassium fertilizers

Powell, Richard Donald

doi:10.31274/rtd-180813-17441

Cited by 4 publications

(4 citation statements)

References 43 publications

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“…In this and in other respects they are similar to many of the principal soils being used for intensive corn production in the north central states (16). High Fertility Experiment, involved very high rates of N, P, aud K fertilizers in various combinations (23). To minimize natural soil differences on this site, four sets of paired plots of N and No-N treatments that were adjoining were selected for tt.is study.…”

Section: General Plan and Proceduresmentioning

confidence: 99%

Quantitative Effects of Nitrogen Fertilizer on the Development and Downward Movement of Soil Acidity in Relation to Level of Fertilization and Crop Removal in a Continuous Corn Cropping System¹

Pierre¹,

Webb²,

Shrader³

1971

Agronomy Journal

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The effect of NH4NO3 in a continuous corn cropping system on the depth distribution and amount of soil acidity produced was studied on four medium‐acid, prairie‐derived soils. To avoid the confounding effect of soluble salts, pH determinations were made after preliminary leaching of the soils and also by the 0.01 M CaC12 method. The amounts of acidity were measured by determining the quantities of CaCO3 required to bring the N‐treated plots to the pH of the No‐N plots. With amounts of N ranging from 1,525 to 2,626 kg N/ha no pH changes were found below the 15‐25‐cm layer. However, after a total of 5,600 kg N/ha had been used within 5 years pH changes were found at a depth of 30 to 45 cm. The total amount of acidity developed averaged 35% of the theoretical (3.57 kg CaCO3 per kilogram N) in the three experiments that received N ranging from a total of 1,525 to 2,626 kg N/ha over 13 to 15 years. In the experiment where 1,120 kg N/ha were used annually, the acidity developed was 60% of theoretical. This larger amount of acidity developed per unit of N with excessive N applications is explained by the lower percentage of fertilizer N recovered by the crop and the higher percentage remaining in the soil or leached as nitrates. With all additions of N, the development of much less than the theoretical amount of acidity is explained in part by the low excess base compared with N in the corn grain and cobs harvested. It is also, evidently, due to relatively large losses of N from the soil without an equivalent loss of bases, and it seems likely that such losses are due largely to denitrification.

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Section: General Plan and Proceduresmentioning

confidence: 99%

Quantitative Effects of Nitrogen Fertilizer on the Development and Downward Movement of Soil Acidity in Relation to Level of Fertilization and Crop Removal in a Continuous Corn Cropping System¹

Pierre¹,

Webb²,

Shrader³

1971

Agronomy Journal

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“…This Improved root system would mean that 5S12Cg has the ability to absorb larger amount s of nitrogen than BS12CQ. In a diallei cross of four inbred lines of maize (WF9, A257, OhA3, and B14), Powell (1968) Cy has been improved to be more efficient than BSSS(R)C^ x BSCB1(R)CQ only at low levels of nitrogen (Table 9).…”

Section: Within Nitrogen Levels Plant Density Did Not Influence Yielmentioning

confidence: 99%

Direct and correlated responses to recurrent selection for grain yield in maize breeding populations

Fakorede

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“…A similar stress day criterion was used by Powell (1968). He found a negative correlation between stress days and both leaf N and leaf P in most of the site-years studied.…”

Section: Weather and Other Environmental Factorsmentioning

confidence: 69%

Concentrations of N, P, and K in the corn leaf as affected by weather indexes and selected soil and management factors

Esquivel-Alvarez¹

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The yield, growth and chemical composition of corn as influenced by hybrids and high rates of nitrogen, phosphorus and potassium fertilizers

Abstract: Table 2, Rainfall and temperature data for the Agronomy and Clarion-Webster Farms Rainfall, inches Temperature, °F

Cited by 4 publications

References 43 publications

Quantitative Effects of Nitrogen Fertilizer on the Development and Downward Movement of Soil Acidity in Relation to Level of Fertilization and Crop Removal in a Continuous Corn Cropping System¹

Quantitative Effects of Nitrogen Fertilizer on the Development and Downward Movement of Soil Acidity in Relation to Level of Fertilization and Crop Removal in a Continuous Corn Cropping System¹

Direct and correlated responses to recurrent selection for grain yield in maize breeding populations

Concentrations of N, P, and K in the corn leaf as affected by weather indexes and selected soil and management factors

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The yield, growth and chemical composition of corn as influenced by hybrids and high rates of nitrogen, phosphorus and potassium fertilizers

Abstract: Table 2, Rainfall and temperature data for the Agronomy and Clarion-Webster Farms Rainfall, inches Temperature, °F

Cited by 4 publications

References 43 publications

Quantitative Effects of Nitrogen Fertilizer on the Development and Downward Movement of Soil Acidity in Relation to Level of Fertilization and Crop Removal in a Continuous Corn Cropping System1

Quantitative Effects of Nitrogen Fertilizer on the Development and Downward Movement of Soil Acidity in Relation to Level of Fertilization and Crop Removal in a Continuous Corn Cropping System1

Direct and correlated responses to recurrent selection for grain yield in maize breeding populations

Concentrations of N, P, and K in the corn leaf as affected by weather indexes and selected soil and management factors

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Product

Resources

About

Quantitative Effects of Nitrogen Fertilizer on the Development and Downward Movement of Soil Acidity in Relation to Level of Fertilization and Crop Removal in a Continuous Corn Cropping System¹

Quantitative Effects of Nitrogen Fertilizer on the Development and Downward Movement of Soil Acidity in Relation to Level of Fertilization and Crop Removal in a Continuous Corn Cropping System¹