الفهرس 
Weeds in rice fieldsOnly 14 pages are availabe for public view
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Abstract
This study was carried out at the research farm of Rice Mechanization Center (R.M.C), Meet El-Deeba, and Kafr El-Sheikh Governorate during two agricultural successive seasons 2001 and 2002. The main objective of the present work was devoted to investigate the performance of the constructed prototype cultivator during weeding operation of rice crop. Soil samples were collected from the experimental field ai different soil depths and mechanical analysis was carried out at soil, water and environmental laboratory, Kafr El-Sheikh to obtain the soil texture. The performance of the machine was evaluated by studying the effect of the following variables:1. Two types of shares (L- Share and cylindrical- Share),2. Four different cultivator forward speeds (l.2,2.6., 3.4, and 4.7 kmlh),3. Four seedling density were’used (60, 70,80,90, hill / 3.3 m ’) and 4. Three weeding times (15, 25, 35 days after transplanting) on the following parameters.