Vol. XXVII 
JANUARY 12, 1924 
No. 2 
JOURNAL OF 
AGRICULTURAL 
RESEARCH 
CONTENTS 
Anchorage and Extent of Com Root Systems - - ■ - - 
JAMES R. HOLBERT and BENJAMIN KOEHLER 
(Contribution from Buroau of Plant Industry, and Illinois Agricultural Experiment Station) 
Pago 
71 
Adjusting Yields to their Regression on a Moving Average, as a 
Means of Correcting for Soil Heterogeneity - - - - 79 
FREDERICK D. RICHEY 
(Contribution from Bureau of Plant Industry) 
Soybean Mosaic: Seed Transmission and Effect on Yield - - 91 
JAMES B. KENDRICK and MAX W.. GARDNER 
(Contribution from Indiana Agricultural Experiment Station) 
Insecticidal Effect of Cold Storage on Bean Weevils - - 99 
A. O. LARSON ai»d PEREZ SIMMONS 
(Contribution from Bureau of Entomology) 
The. Effect of Rust Infection upon the Water Requirement of 
Wheat - - - - - — -x - - 107 
FREEMAN WEISS 
(Contrlbution from Bureau of Plant Industry and Minnesota Agricultural Experiment Station) .. 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
GOVERNMENT PRINTING OFFICE 
