scholarly journals Farm work systems for crop rotation on dried paddy field in snowy area. IV. The factor analysis for the productivity on the dried paddy field by farmers group.

1990 ◽  
Vol 25 (2) ◽  
pp. 122-133
Author(s):  
Kazuhiko KURATA ◽  
Kazuhiro NAKANO ◽  
Takasi NAGAI ◽  
Michiaki ITOU ◽  
Oritaro ENDO
Keyword(s):  
Factor Analysis ◽  
Crop Rotation ◽  
Paddy Field ◽  
Work Systems ◽  
Farm Work

scholarly journals Farm work systems for crop rotation on dried paddy field in snowy area. II. The case study on the mechanization and its utilization efficency for crop rtation on dried paddy field.

1989 ◽  
Vol 24 (2) ◽  
pp. 114-125
Author(s):  
Shizunori TAKAYAMA ◽  
Oritaro ENDO ◽  
Kazuhiko KURATA ◽  
Michiaki ITO ◽  
Kazuhiro NAKANO ◽  
...  
Keyword(s):  
Crop Rotation ◽  
Paddy Field ◽  
Work Systems ◽  
Farm Work

scholarly journals Farm Work Systems for Crop Rotation on Dried Paddy Field in Snowy Area

1989 ◽  
Vol 24 (1) ◽  
pp. 10-17
Author(s):  
Kazuhiko KURATA ◽  
Oritaro ENDO ◽  
Michiaki ITO ◽  
Kazuhiro NAKANO ◽  
Takashi NAGAI ◽  
...  
Keyword(s):  
Crop Rotation ◽  
Paddy Field ◽  
Work Systems ◽  
Farm Work

R.M.R. Values of Mechanized Farm Work on Paddy Field

1972 ◽  
Vol 1972 (15) ◽  
pp. 42-47
Author(s):  
Tosio NAITO ◽  
Michihiro NAKAJIMA
Keyword(s):  
Paddy Field ◽  
Farm Work

scholarly journals Nitrogen and phosphorus effluent loads from a paddy-field district adopting collective crop rotation

2012 ◽  
Vol 66 (5) ◽  
pp. 1074-1080 ◽  
Author(s):  
T. Hama ◽  
T. Aoki ◽  
K. Osuga ◽  
S. Sugiyama ◽  
D. Iwasaki
Keyword(s):  
Crop Rotation ◽  
Paddy Field ◽  
Surface Runoff ◽  
Paddy Rice ◽  
Rice Crop ◽  
Nutrient Load ◽  
Nitrogen And Phosphorus ◽  
Investigation Period ◽  
Rotation Crops

Japanese paddy rice systems commonly adopt the rotation of vegetables, wheat and soybeans with paddy rice. Crop rotation may, however, increase the nutrient load in effluent discharged from the district because more fertilizer is applied to the rotation crops than is applied to paddy crops. We investigated a paddy-field district subject to collective crop rotation and quantified the annual nutrient load of effluent from the district in three consecutive years. The total annual exports of nitrogen and phosphorus over the investigation period ranged from 30.3 to 40.6 kg N ha–1 and 2.62 to 3.13 kg P ha–1. The results suggest that rotation cropping increases the effluent nutrient load because applied fertilizer is converted to nitrate, and surface runoff is increased due to the absence of shuttering boards at the field outlets.

scholarly journals Factor Analysis of Paddy-Field Consolidation: Case Study of Iran

2012 ◽  
Vol 1 (2) ◽  
pp. 108 ◽  
Author(s):  
Ebrahimi Mohammad Sadegh ◽  
Kalantri Khalil ◽  
Asadi Ali
Keyword(s):  
Factor Analysis ◽  
Paddy Field ◽  
Sampling Method ◽  
Development Program ◽  
Total Variance ◽  
Survey Study ◽  
Institutional Effects ◽  
Rice Farmers ◽  
Five Factors

<p>Land consolidation is a strategy for the development of Iranian rice-growing regions. The most important targets of the program are reducing rice farmers' expenses and increasing their income. The object of this article is to conduct a factor analysis of Iranian paddy-field consolidation. The research was conducted in the form of a survey study. The data was collected from188 farmers participating in a farm-development program in Guilan province, sampled using a stratified random sampling method. The reliability of the questionnaire was calculated using a Cronbach alpha coefficient (alpha &gt;0.78) for different sections after conducting a pilot study. Factor analysis for farmers with rice fields in projects showed that five factors explained 63.92% of total variance. These factors were: 1) social, 2) instructional, 3) environmental, 4) economic and 5) institutional effects. Social effects alone, the factor with the greatest effect, explained 34.84% of total variance.</p>

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