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Hernández-Ruiz,Patricia; Castaño-Meneses,Gabriela; Cano-Santana,Zenón. |
The objective of this work was to evaluate the species composition and functional groups of ants in nonagricultural (NA) and in irrigated areas (S, seasonal irrigation; P, irrigation with well water; W, irrigation with wastewater) in an arid agricultural region in central Mexico, throughout 2005 and 2006. A total of 52,358 ants belonging to 6 subfamilies, 21 genera and 39 species was collected using pitfall traps. The species best represented in all plots were: Forelius pruinosus, Pheidole obtusospinosa, Monomorium minimum and Dorymyrmex spp. NA plots recorded the highest density of ants. The highest values for diversity (H') and equitativity (J') were recorded in NA and P plots, while the lowest were recorded in W plots. Cluster analysis showed two... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Irrigated area; Semiarid zone; Wastewater. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800015 |
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Nittaya Ruensuk; Sukanya Binahamad. |
Farmers in irrigated area tried to grow rice more than 2 crops/year. Nowadays there are no break even data. The aim of this research to compare economic data between 2 and 3 crops/year rice cropping system. Experiments were conducted in farmer’s field and Pathumthani Rice Research Center’s field, Pathum Thani province in 2011-13. There were 3 experiments : using the same variety, changed variety every season and changed variety every season with short duration rice variety in the rice cropping system. Each experiment consisted of 2 treatments : 2 and 3 crops/year rice cropping system. The result shown that 2 crops/year rice cropping system gave lower total yield and income than 3 crops/year around 393 kg./rai/year and 3,117 bath/ra/year but gave higher... |
Tipo: PhysicalObject |
Palavras-chave: Rice cropping system; Irrigated area; Rice production; ระบบการปลูกข้าว; นาชลประทาน; การผลิตข้าว; ผลผลิต; รายได้; กำไร. |
Ano: 2014 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5648 |
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