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Publications by Robert R. Humphrey

The Effects of Nitrates and Phosphates Upon Forage Production of a Southern Arizona Desert Grassland Range

Journal of Range Management

English

Related publications

The Effect of Commercial Fertilizers on Forage Production and Utilization on a Desert Grassland Site

Journal of Range Management

English

Nitrogen Application Effects on Forage Sorghum Biomass Production and Nitrates

Kansas Agricultural Experiment Station Research Reports

English

Vegetative Changes on Protected Versus Grazed Desert Grassland Ranges in Arizona

Journal of Range Management

English

Grain Crops and Forage Yield Resulting From the Use of Phosphates in Integrated Production System

Revista Ciencia Agronomica

English

This Labyrinthine Life. A Tale of the Arizona Desert.

JAMA - Journal of the American Medical Association

English

Rangeland Management Series: Annual Range Forage Production

English

Top-Dressing of Grassland With Phosphates and Lime

New Zealand Journal of Agricultural Research

English

Grassland and Forage Crops in the United States

Multidisciplinary

English

Dutchwoman Butte: A Relict Grassland in Central Arizona.

English