نتایج جستجو برای: less than 625 individuals per hectare

تعداد نتایج: 2634328  

2002
K. Osoro R. Celaya

Effects of breed and sward surface height on ewe liveweight and body condition changes and on lamb liveweight gains during grazing in the spring and autumn were studied. The output per hectare in each season was also calculated. A total of 112 Gallega ewes (35Æ6 kg live weight) and 204 Latxa ewes (47Æ5 kg live weight) with their lambs were used during the spring (March–June) to study the effect...

2009
Jorge Jara

Approximately 85% of the water consumed in Chile is destined to agricultural irrigation and is managed by the users themselves. This study analyzed the price that irrigation water users pay to their Water User Associations (WUAs) to which they belong and the relationship of this price to the professional level and performance of the WUAs. The study included 24 WUAs: 10 River Administration Boar...

Dejene Tadesse Banjaw Tigist Germen Wolde

Objective: Chamomile is one of the commercial medicinal plants produced in Ethiopia. Besides, it is priority crop in national aromatic and medicinal plants research project in the country. As chamomile production affected by production techniques this activity was conducted to identify the effect of seed storage duration and seedling raising methods on its seedling establishmen...

1999
Martin Ricker Robert O. Mendelsohn Douglas C. Daly

Tropical forests continue to be deforested because forest owners believe they can earn more income through land uses involving forest conversion. A case study in a Mexican rainforest revealed that enrichment planting with the native tree species Pouteria sapota (‘mamey’) is a management approach that can increase the commercial value of the forest enough to compete with these destructive land u...

Journal: :تحقیقات آب و خاک ایران 0
حسین جعفری موسسه تحقیقات خاک و آب پیمان افراسیاب هیئت علمی معصومه دلبری عضو هیئت علمی دانشگاه زابل

, present study was performed in order to determine effects of different amounts of irrigation water, plant density and planting pattern on yield, yield components and water use efficiency (wue) of corn, variety single cross 700 (700ksc) using drip irrigation systems (tape) , in the research station of islamabadgharb in two consecutive years (2011-2012). the project was in the form of split blo...

Journal: :Applied and environmental microbiology 1979
J T Dibble R Bartha

A laboratory study was conducted with the aim of evaluating and optimizing the environmental parameters of "landfarming", i.e., the disposal by biodegradation in soil of oily sludges generated in the refining of crude oil and related operations. Oil sludge biodegradation was monitored by CO2 evolution and by periodic analysis of residual hydrocarbons. The parameters studied were soil moisture, ...

Journal: :Digital discovery 2023

A sonochemical Materials Acceleration Platform was implemented to synthesize CdSe nanocrystals under 625 unique conditions (in triplicate) in less than 6 weeks. The modularity of the workflow is adaptable a variety applications.

 Quantitative assessment of landslide sedimentation in the ILAM dam Basin Information on the accurate volume of landslides and sedimentation in landslides is a research necessity, with the assumption that the bulk of sediment accumulated in the ILAM Dam (located between , E and , N) is related to the surface landslides of the basin. Although the role of landslides in erosion, sediment...

2017
Wei Yao Miaohong Ruan Lifang Qin Chuanyu Yang Rukai Chen Baoshan Chen Muqing Zhang

Sugarcane mosaic disease is mainly caused by the sugarcane mosaic virus (SCMV), which can significantly reduce stalk yield and sucrose content of sugarcane in the field. Coat protein mediated protection (CPMP) is an effective strategy to improve virus resistance. A 2-year field study was conducted to compare five independent transgenic sugarcane lines carrying the SCMV-CP gene (i.e., B2, B36, B...

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