scholarly journals Basic Study for Estimation of Nitrogen Content of Rice Plants from Vegetation Cover Rate of Rice obtained by a Simple Image Measurement

2007 ◽  
Vol 46 (4) ◽  
pp. 61-65 ◽  
Author(s):  
Shusuke TAKEMINE ◽  
Atsushi RIKIMARU ◽  
Kazuyoshi TAKAHASHI ◽  
Yasuhiro HIGUCHI
Keyword(s):  
Nitrogen Content ◽  
Vegetation Cover ◽  
Image Measurement ◽  
Basic Study ◽  
Rice Plants

Nature of Competition between Weeds and Rice for Nitrogen Under Dry Land Conditions

1973 ◽  
Vol 9 (3) ◽  
pp. 219-223 ◽  
Author(s):  
T. Chakraborty
Keyword(s):  
Nitrogen Content ◽  
Rice Straw ◽  
Dry Matter ◽  
Weed Competition ◽  
Weed Species ◽  
Dry Land ◽  
Rice Plants ◽  
Significant Difference

SUMMARYThe nitrogen content of weeds was significantly higher than that of Dular rice-straw, but with Taichung Native I rice in winter there was no significant difference between the nitrogen in weed samples and rice plants at the tillering stage. Rice straw contained a higher proportion of nitrogen where there were three hand weedings. The total dry matter of rice was much reduced by weed competition. Weed species contained much nitrogen at the vegetative, flowering and post-flowering stages, indicating severe competition for nitrogen by weeds throughout the growth of rice under dry land conditions.

scholarly journals Varietal Differences in Photosynthetic Rates in Rice Plants, with Special Reference to the Nitrogen Content of Leaves

2010 ◽  
Vol 13 (1) ◽  
pp. 53-57 ◽  
Author(s):  
Tadashi Hirasawa ◽  
Satomi Ozawa ◽  
Renante Taylaran ◽  
Taiichiro Ookawa
Keyword(s):  
Special Reference ◽  
Nitrogen Content ◽  
Varietal Differences ◽  
Photosynthetic Rates ◽  
Rice Plants

A survey on the biological control of leafhoppers and planthoppers, injurious to rice plants by Pipunculids (Diptera)

2016 ◽  
Vol 5 (08) ◽  
pp. 4767
Author(s):  
Shailendra Kumar Amogh* ◽  
Ashwani Kumar ◽  
Prakash Michael
Keyword(s):  
Biological Control ◽  
Pest Management ◽  
Natural Enemies ◽  
Flowering Plants ◽  
Basic Study ◽  
Rice Plants ◽  
Rice Leaf ◽  
Different Seasons ◽  
Rice Pest

The project aim of the research is to find out different species of Pipunculids, natural enemies of rice leaf hoppers and plant hoppers in Indo- Nepal region in order to contribute towards the basic study of taxonomy of Pipunculids and biological control of these pests. In the present work eight specimen of Pipunculids were collected in which two species are new ones (Eudoryllas curvibellata sp. nov. and Pipunculus (Cephalops) Pokharensis sp. nov.) Simultaneously several leaf hoppers were collected and examined in different seasons and in different places. The percentage of parastism by Pipunculids in leaf hoppers was about 27.5%. It was also concluded that fencing of field with flowering plants saves crops because it was observed that the average parasitism was 46.5% in fencing field with flowering plants in comparision to the non-fencing field where the average parasitism was only 13%. Biological control of these pests will offer scope to contribute to better rice pest management.

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