**Meet the editors**

Dr. Price is a native of East Tennessee, U.S.A. and received both B.S. and M.S. degrees from The University of Tennessee majoring in Plant and Soil Sciences and Ph.D. from North Carolina State University majoring in Crop Science. Dr. Price's primary responsibilities in the Conservation Systems Research group are to conduct research addressing the impact of integrated weed

management strategies on weed populations/competitiveness in conservation systems as well as development of cost-effective and environmentally friendly weed management systems integrating conservation tillage, crop rotations, cover crops and weed management systems. http://www.ag.auburn.edu/agrn/faculty/Price/index.php

Jessica Kelton is a Research Associate with Auburn University at the Wiregrass Research and Extension Center in Headland, Alabama, U.S.A. Mrs. Kelton earned her M.S. degree from Auburn University in Agronomy and Soils with a concentration in Weed Science. As a Research Associate, she primarily works in conservation systems, particularly focused on implementation of high

residue cover crops for management of problematic weed species such as glyphosate resistant Palmer amaranth. Mrs. Kelton resides in Alabama with her husband and two children.

Contents

**Preface VII**

**Tropical Soils 1** Joseph Addo Ampofo

Isidoro Gómez

**Agrophytocenosis 51** Vytautas Pilipavičius

**Spectrometry 85**

and Pilar Sandín-España

**Herbicides 131** E. A. Saratovskikh

Chapter 1 **Agrochemicals and Bacterial Diversity in Cultivated**

Chapter 3 **Phytotoxicity of Phenolic Acids From Cereals 37**

Chapter 2 **Sorption of Terbuthylazine in Organic Matter Amended Soils: Effects on Eisenia Fetida and Lumbricus Terrestris 19** Manuel Tejada, Marina del Toro, Paloma Osta, Juan Parrado and

Héctor R. Bravo, Sylvia V. Copaja and Madeleine Lamborot

Chapter 4 **Weed Seed Rain Dynamics and Ecological Control Ability in**

Chapter 5 **Determination of Pesticides in Water and Vegetable Matter by**

Pin-Huei Chen, Pai-Shan Chen and Shang-Da Huang

Chapter 7 **Kinetics and Mechanism of Inhibition of Oxidation Enzymes by**

Chapter 6 **Degradation of Cyclohexanedione Oxime Herbicides 101**

**Manual Shaking-Enhanced, Ultrasound-Assisted Emulsification Microextraction Combined with Gas Chromatography-Mass**

Beatriz Sevilla-Morán, Carmen López-Goti, José Luis Alonso-Prados
