H. L. Ahlgren

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Agronomy, principles and practices

L. F. Graber, H. L. Ahlgren, 1948 .

Laboratory Manual For Students Of Agronomy.3rd. Ed.

L. F. Graber, H. L. Ahlgren, 1942 .

Some Needed Developments in Statistical Programs to Obtain Research Data

H. L. Ahlgren, W. H. Ebling, 1959 .

Root Growth of Alfalfa, Medium Red Clover, Bromegrass, and Timothy Under Various Soil Conditions 1

H. L. Ahlgren, R. J. Muckenhirn, P. Lamba, 1949 .

Influence of Fertilization, Irrigation, and Stage and Height of Cutting on Yield and Composition of Kentucky Bluegrass (POA Pratensis L.)1

H. L. Ahlgren, G. Mortimer, 1936 .

Behavior of Various Selections of Kentucky Bluegrass, Poa Pratensis L., when Grown as Spaced Plants and in Mass Seedings 1

H. L. Ahlgren, D. Smith, E. L. Nielsen, 1945 .

Effect of Soil Type, Fertilization, and Stage of Growth on Yield, Chemical Composition, and Biological Value of Ladino Clover (Trifolium repens L.) and Alfalfa (Medicago sativa) 1

H. L. Ahlgren, A. W. Burger, W. F. Wedin, 1956 .

Harmful Root Interactions as a Possible Explanation for Effects Noted between Various Species of Grasses and Legumes1

H. L. Ahlgren, O. Aamodt, 1939 .

Effect of Height and Frequency of Cutting on the Productivity and Survival of Ladino Clover1 (Trifolium repens L.)

H. L. Ahlgren, M. Tesar, 1950 .

Laboratory manual for students of agronomy

H. L. Ahlgren, L. Graber, 1950 .

A Rapid Method for Determining Hydrocyanic Acid Content of Single Plants of Sudan Grass

H. L. Ahlgren, P. G. Hogg, 1942 .

A Comparison of Methods Used in Evaluating the Results of Pasture Research1

H. L. Ahlgren, 1947 .

Preliminary Report of a Study on Methods Used in Botanical Analyses of Pasture Swards 1

H. L. Ahlgren, Fred W. Tinney, O. S. Aamodt, 1937 .

A Statistical Study of Several Methods used in Determining the Botanical Composition of a Sward: I. A Study of Established Pastures 1

H. L. Ahlgren, R. W. VanKeuren, 1957 .