Vol. 81, No. 4 (Published on 1st, July. 2019)

 

CONTENTS

 

ESSAY

 

Y. ASATANI…195

 

SPECIAL EDITION

 

The Relationship between Spread of Agricultural Machinery and Culture

Editor : H. YAMASAKI

 

T. FUJIHARA : A Social History of Tractors…198

 

H. HASEGAWA : Issue and Perspectives for Agricultural Machinery Industry in Russian Federation…203

 

TECHNO-TOPICS

 

H. KONYA : Safety Test for Robot and Automated Agricultural Machinery…208

 

PAPERS (Articles)

 

RESEARCH PAPERS

 

Thermal Death of Escherichia coli Suspended in Solutions Containing Sodium Ion at Several pH Values…227  abstracts

K. MORIMATSU, S. NISHIHARA

 

Underwater Helmholtz Resonator with Double Cavities for Volumetric Estimation of Aquatic Samples…233  abstracts

S. N. NJANE, Y. OGAWA, T. SUZUKI, K. OGATA, Y. SHINOHARA, T. KAWAMURA, T. NISHIZU, N. KONDO

 

Aerodynamic Characteristics of Buckwheat Receiving the Cleaning Wind…243  abstracts

Y. UEKA, M. MATSUI, Y. AOYAGI, S. MIURA

 

Navigation of a Robot Tractor Using the Japanese Quasi-Zenith Satellite System (Part 1)
 ―Application of Precise Point Positioning Method to a Robot Tractor―…250  abstracts

H. WANG, N. NOGUCHI

 

TECHNICAL PAPER

 

Local Adaptability of Rice Cultivation by Transplanting Using High-Density Seedling Mats in Japan…256  abstracts

K. SAWAMOTO, Y. UMETSU, T. INAMURA