Growers need the latest, best information. Alfalfa Management Guide delivers. Growers know that improved yield, profitability, and long-term sustainability are the core of a solid management plan. Give them the information they need to achieve it.  An attractive and information-packed publication, the expanded Alfalfa Management Guide is designed especially for busy growers, with to-the-point recommendations, useful images of diseased plants and pests, and quick-reference tables and charts. Revised in 2011, this edition of Alfalfa Management Guide covers the latest strategies for alfalfa establishment, production, and harvest-soil testing, fertilizing, integrated pest management, rotation, and more.  Authored by well-respected agricultural extension and research specialists Dan Undersander, Dennis Cosgrove, Eileen Cullen, Craig Grau, Marlin E. Rice, Mark Renz, Craig Sheaffer, Glen Shewmaker, and Mark Sulc. The American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America are prominent international scientific societies headquartered in Madison, Wisconsin. The Societies specialize in peer-reviewed, high-quality science titles for a wide variety of audiences.Some of the many areas we publish in include:-Soils Methods and Management-Crop Development and Improvement-Agrosystem Management and the Global Food Crisis-Environmental Conservation and Climatology

Alfalfa Management Guide

Science & Math

Marlin E. Rice

Mark Renz

Dan Undersander

Dennis Cosgrove

Eileen Cullen

Craig Grau

Craig Sheaffer

Glen Shewmaker

Mark Sulc

Biological Sciences

American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America

Writing in a conversational style for the lay person -- without forsaking science -- the author embarks on a world-wide hunt for the largest predatory fish and most fearsome shark ever to inhabit our global seas. After 62 million years, the fossil record for this 60-foot aqua-motive known as C. megalodon abruptly ends. 
In part, this is a color-illustrated guide book that pinpoints where to search for Meg teeth and other shark fossils in Florida and elsewhere, as well as how to identify the various species. It is also meant to invite lively discussions about how such a menacing predator became extinct, or whether it is still lurking deep below the ocean’s surface. Additionally, the book is a rallying cry for treating today’s sharks (as well as all life forms) with as much respect as we ourselves would want to be treated.

Megalodon: Hunting the Hunter

Paleo Pr

Avocational paleontologist Mark Renz stumbles onto an ancient graveyard of mammoths, mastodons, sloths, horses, llamas, deer, peccaries, saber-toothed cats, jaguars, bears, wolves, snakes and alligators. Was it a major storm, flood, drought of plague that killed so many creatures at once? What signs do scientists look for to determine cause and time of death? What are the ethical considerations for amateurs who come across such a site? Do you keep the bones for yourself, sell them on e-bay, or donate them to a museum of the greater public good? Close to 800 field photos offer readers a rare glimpse at the final moments in the lives of these animals.

Giants in the Storm

PaleoPress

A search in the Peruvian Desert, 2000 feet into the foothills of the Andies, turns up 5-10 million year-old articulated whales, seals, dolphins and sharks. Renz photographs these long dead creatures and interviews paleo experts who have concluded that today's great white shark evolved from an ancient mako. The transition took place 4-5 million years ago in what was a deep salt-water lagoon.

Desert Sharks

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Books by Mark Renz