(Ebook) Advances in Agronomy 81 1st Edition by Donald Sparks ISBN 9780120007998 0120007991

(Ebook) Advances in Agronomy 81 1st Edition by Donald Sparks ISBN 9780120007998 0120007991

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Product details: 

ISBN 10:  0120007991

ISBN 13: 9780120007998

Author:  Donald L. Sparks

Recognized as a leading reference in agronomy with the highest impact factor among agriculture serials 
Contains five in-depth review chapters focused on critical issues in agricultural and environmental sustainability 
Covers timely, cross-disciplinary topics across agronomy, soil science, plant science, and environmental science 

Table of contents: 

THE GLOBAL IMPACT OF SOIL EROSION ON PRODUCTIVITY
I: ABSOLUTE AND RELATIVE EROSION-INDUCED YIELD LOSSES
Christoffel den Biggelaar, Rattan Lal, Keith Wiebe and Vince Breneman

I. Introduction

II. Data Sources and Analyses

A. Data Sources

B. Data Analysis and Interpretation

C. Location of, and Methods Employed in, the Erosion-Productivity Studies

III. Assumptions

A. Yield as a Measure of Productivity

B. Mean Yield Decline

C. Linear Relation

D. Average Bulk Density

E. Relative Yield Decline

IV. Results

A. Effects on Yield in TSD Experiments

B. Erosional Effects on Yield in Management Practices Studies

C. Effects of Inputs

V. Discussion and Conclusions

References

THE GLOBAL IMPACT OF SOIL EROSION ON PRODUCTIVITY
II: EFFECTS ON CROP YIELDS AND PRODUCTION OVER TIME
Christoffel den Biggelaar, Rattan Lal, Keith Wiebe, Hari Eswaran, Vince Breneman and Paul Reich

1. Introduction

A. Effect of Erosion on Food Production

B. Effect of Erosion on Food Security

C. Erosion-productivity Estimates

II. Objectives of the Present Study

III. Methods

A. Data Sources.

B. Potential Erosion Rate Estimates

C. Estimates of Potential Crop Growing Areas

D. Crop Yield Estimation.

E. Data Analysis

IV. Results

A. Maize

B. Millet and Sorghum.

C. Potatoes

D. Soybeans.

E. Wheat.

F. Value of Production Losses

V. Discussion and Conclusion.

References.

PLANT GROWTH PROMOTING RHIZOBACTERIA: APPLICATIONS AND PERSPECTIVES IN AGRICULTURE

Zahir A. Zahir, Muhammad Arshad and William T. Frankenberger, Jr.

I. Introduction

II. Mechanisms of Action.

A. Biological Nitrogen Fixation

B. Production of Plant Growth Regulators and Biologically Active Substances.

C. Solubilization and Uptake of Nutrients

D. Biological Control..

III. Screening of PGPR

A. Root/Shoot Growth Under Gnotobiotic Conditions

B. In Vitro Production of Plant Growth Regulators

C. 1-Aminocyclopropane-1-Carboxylic Acid (ACC) Deaminase Activity

IV. Application of PGPR in Agriculture..

A. Effect of PGPR Inoculation on Cereals.

B. Effect of PGPR Inoculation on Other Crops

C. Rhizobia as PGPR in Non-Legumes

D. Co-Inoculation of Legumes with PGPR and Rhizobium

E. Precursor-Inoculum Interactions

V. Concluding Remarks.

Acknowledgements

References

ORGANIC MATTER ACCUMULATION IN SUBMERGED SOILS

Kanwar L. Sahrawat

I. Introduction

II. Decomposition of Organic Materials in Submerged Soils

A. Factors Affecting Organic Matter Decomposition

III. Organic Matter Accumulation in Wetland Soils

A. Factors Influencing Organic Matter Accumulation.

IV. Mechanisms for Organic Matter Accumulation in Wetlands.

A. Lack of Oxygen or Anaerobiosis

B. Deficiency of Nutrients

C. Lack of Terminal Electron Acceptors.

D. Production of Inhibitors of Microbial Activity.

E. Formation of Recalcitrant Complexes...

F. Incomplete Decomposition and Decreased Humification of Organic Matter

G. High Primary Productivity

V. Modeling Organic Matter in Wetland Soils.

VI. Perspectives

References

POTASSIUM NUTRITION OF THE RICE-WHEAT CROPPING SYSTEM

Bijay Singh, Yadvinder Singh, Patricia Imas and Xie Jian-chang

I. Introduction

II. The Rice-wheat Cropping Systems

A. Distribution.

B. Characteristics.

III. Potassium Fertilizer Use in the Rice-wheat Cropping Systems

IV. Potassium Fertility of Soils Under Rice-wheat Cropping Systems.

A. Mineralogy of Soil Potassium.

B. Forms of Soil Potassium

C. Potassium Transformations in Soils

D. Assessment of Soil K-supplying Capacity

V. Potassium Uptake by Rice-wheat Cropping Systems

VI. Response of Rice-wheat Cropping Systems to Applied Potassium.

A. Time, Source and Method of Potassium Application

B. Interactions of Potassium with Other Nutrients

C. Effect of Potassium Fertility Status of Soils

on Response to Potassium

D. Site-specific Potassium Management for Rice and Wheat

E. Potassium Use and Resistance to Disease and Pest Incidence.

VII. Potassium Balance in Soil-plant Systems

VIII. Changes in Potassium Fertility in the Soil Under

Rice-wheat Cropping Systems

IX. Research Needs.

X. Conclusions

References.

INDEX

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