نتایج جستجو برای: russian knapweed

تعداد نتایج: 44059  

Journal: :Agronomy 2021

Assessing the spatial distribution of weeds within a field is key step to success site-specific weed management strategies. Centaurea diluta (knapweed) an emerging that causing major agronomic problem in southern and central Spain because its large size, difficulty controlling it, high competitive ability. The main objectives this study were examine variability C. density two wheat fields by mu...

Aleksandr I. Zhilenkov Elena A. Shirina Elena N. Semykina Marina V. Polovneva Svetlana V. Poltoratskaya Victoria V. Kichigina

The study of the axiological problems in literary studies is a fundamental direction of modern Russian Philology. In this paper, we will first conside, the search process for the orientations of values of Russian writers of the classical period of Russian literature in the 19th century; and second, the spiritual themselves foundations as ideological constants of the writers. The pursuit of Russ...

Journal: :American journal of botany 2008
Alexey Shipunov George Newcombe Anil K H Raghavendra Cort L Anderson

Fungal endophytes are important in plant ecology and common in plants. We attempted to test cointroduction and host-jumping hypotheses on a community basis by comparing endophytes isolated from invasive spotted knapweed (Centaurea stoebe, Asteraceae) in its native and invaded ranges. Of 92 combined, sequence-based haplotypes representing eight classes of Fungi, 78 occurred in only one of the tw...

Aliyeh Kord Zafaranlu Kambuziya Eftekhar Sadat Hashemi

In this paper we analyzed some of the phonological rules of Russian loanword adaptation in Persian, on the view of Optimal Theory (OT) (Prince and Smolensky, 1993, 2003). It is the first study of phonological process on Russian loanwords adaptation in Persian. By gathering about 50 current Russian loanwords, we selected some of them to analyze. We found out that vowel insertion, vowel prothesis...

2014
Olivier Broennimann Blaise Petitpierre Antoine Guisan

Methods The niche characteristics of the east and west invasive populations of spotted knapweed in North America were determined from documented occurrences over 120 consecutive years (1890–2010). For this investigation, the 2.5 and 97.5 percentiles of values along temperature and precipitation gradients, as given by the two first axes of a principal components analysis (PCA), were calculated. ...

For the foreign student it is very important to own skills of the academic letter. It is an important indicator of professional and research competence of the student. The mobility of foreign graduates of the Russian higher education institutions depends on their level of proficiency in the academic Russian letter as communications between the educational and scientific organizations extend at ...

2000
B. A. FREDERICK

Investigations of the diversity of bacterial communities associated with fieldcollected specimens of two insect biological control agents of spotted knapweed, Agapeta zoegana and Cyphocleonus achates, were made using molecular methods. The objective was to assess the bacterial communities of each insect to evaluate the potential compatibility of plant pathogenic fungi as a supplement to insect ...

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