scholarly journals Weedy Rice: Competitive Ability, Evolution, and Diversity

Author(s):  
Swati Shrestha ◽  
Shandrea Stallworth ◽  
Te-Ming Tseng

2020 ◽  
Vol 34 (4) ◽  
pp. 455-469 ◽  
Author(s):  
Swati Shrestha ◽  
Gourav Sharma ◽  
Nilda Roma Burgos ◽  
Te-Ming Tseng


Author(s):  
D. Ratnasekera ◽  
M.K.S. Dilrukshi ◽  
H.L.C. Himanda ◽  
A.P.T. Subhashi


2019 ◽  
Vol 55 (6) ◽  
pp. 875-884 ◽  
Author(s):  
Sushmita Munda ◽  
Sanjoy Saha ◽  
Totan Adak ◽  
Nitiprasad Jambhulkar ◽  
Priyadarsini Sanghamitra ◽  
...  

AbstractWeedy rice species exhibit differential competitive ability and cause significant losses to rice yield. The present study was conducted to evaluate the competing ability of weedy rice accessions collected from foothills of eastern Himalayas and coastal Odisha grown in the presence of cultivated indica rice var. Swarna. The competitive ability of Swarna and weedy rices were estimated on the basis of (i) Swarna yield reduction under different durations of competition with weedy rice; and (ii) nutrient uptake by Swarna and weedy rice in competitive environment. There was significant yield reduction (18%) when competition was allowed until 6 weeks after emergence (WAE) compared to competition until 2 WAE, which was due to vigorous growth of weedy rice at early vegetative stage. The biomass accumulation and tiller number of weedy rice were significantly higher compared to Swarna. Odisha weedy rice accession recorded about 18, 57 and 24% higher N, P and K uptake, respectively, than Swarna. The highest yield reduction (22%) in Swarna was recorded when grown with OA1 and the lowest impact (7.7%) was recorded with AA2. As conclusion, management practices should be implemented within 2–4 weeks of emergence considering 5–10% acceptable yield loss of Swarna, and grain yield of cultivated rice was reduced significantly by high N and K uptake by weedy rice under a competitive environment.



2016 ◽  
Vol 76 (2) ◽  
pp. 242-251 ◽  
Author(s):  
Bashira Olajumoke ◽  
Abdul Shukor Juraimi ◽  
Md. Kamal Uddin ◽  
Mohd H.A Husni ◽  
Md. Amirul Alam


2020 ◽  
Vol 18 (7) ◽  
pp. 1216-1231
Author(s):  
K.A. Nefedova ◽  
D.O. Maslakova

Subject. This article discusses the issues of development of the Krasnaya Polyana resort area. Objectives. The article aims to assess the competitive ability and attractiveness of this resort area through developing indicators. Methods. For the study, we used a comparative analysis, and factor and ranking score techniques. Results. The article offers original methods to assess the competitiveness of the ski resort area and describes possible directions to increase and improve the competitiveness and attractiveness of ski resorts. Conclusions. Comprehensive development indicators help assess the competitive ability of the ski resort area. Modified expert, sociological, rating, and differential methods contribute to the effective management of the resort area's advantages.



2009 ◽  
Vol 34 (9) ◽  
pp. 1650-1655 ◽  
Author(s):  
Wen-Shun JIANG


2011 ◽  
Vol 37 (8) ◽  
pp. 1324-1332 ◽  
Author(s):  
Jing SHAO ◽  
Wei-Min DAI ◽  
Lian-Ju ZHANG ◽  
Xiao-Ling SONG ◽  
Sheng QIANG




2021 ◽  
Vol 50 ◽  
pp. 16-24
Author(s):  
Pablo Adrián García-Parisi ◽  
Sebastián Aníbal Gavilán ◽  
Cecilia Casas ◽  
Pedro Emilio Gundel ◽  
Marina Omacini


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