Cumali Ozaslan

Dicle University

Increased agricultural weed diversity is associated with reduced dominance of competitive weeds that reduce crop yields. In addition, diverse weed communities can promote biodiversity at other trophic levels and enhance ecosystem services. For both reasons, there is increasing interest in the relationship between agricultural management and weed di...

Background There is evidence that global anthropogenic climate change may be impacting floral phenology and the temporal and spatial characteristics of aero‐allergenic pollen. Given the extent of current and future climate uncertainty, there is a need to strengthen predictive pollen forecasts. Methods The study aims to use CatBoost (CB) and deep l...

Wheat is a strategic crop with its role in human nutrition. In Türkiye, it has importance in agriculture and economy as well as being a staple crop. Mardin and Şanlıurfa provinces of Türkiye approximately produces 1.6 million tons of wheat on 600 thousand ha fields. One of the important factors limiting wheat production is weeds. Weeds compete with...

The rich floristic and faunistic diversity of Türkiye hosts numerous endemic species, particularly in the southeastern region. Climate change could exert negative impacts on the distribution of endemic species and cause their extinction. Hydrothassa anatolica Şahin & Özdikmen, 2019 (Chrysomelidae: Chrysomelinae) is an endemic species distributed in...

Hakkari/Yüksekova Havzasında Yabancı Otlar Üzerinde Saptanan Böcek Türleri ÖZET: Çalışmada zengin bir biyolojik çeşitliliğe sahip olan Hakkari/Yüksekova Havzasında yayılım gösteren yabancı otlar üzerinde beslenen doğal düşmanların (böcekler) belirlenmesi hedeflenmiştir. Sürvey çalışmaları 2020-2021 yıllarında gerçekleştirilmiştir. Alanda 10 farklı...

Studies on biological control for the sustainable management of weeds that exert serious ecological, economic, and human health problems are attracting increasing attention. Detection of potential biological control agents (pests, pathogens, etc.) on target weed species is the first step in the biological control program. This study aimed to determ...

Biyolojik çeşitlilik açısından son derece zengin olan Yüksekova Havzası Gever Ovası'nda (Yüksekova/Hakkari) 232 farklı noktada iki yıl boyunca (2020-2021) sürveyler gerçekleştirilmiştir. Çalışma kapsamında Türkiye'de önemli bazı yabancı ot türlerini barındıran Convulvulus L. cinsine ait türler, bunların bölgedeki popülasyon yoğunlukları ile rastlan...

Background Excessive and unconscious use of pesticides in agricultural areas negatively affects ecosystem services and biodiversity and threatens human and environmental health. Therefore, natural enemies (biological control agents) that could be utilized to suppress the infestation of diseases, pests and weeds have attracted the attention of scien...

Diyarbakır’da organik çeltik tarımının olanaklarını belirlemek ve organik tarıma geçişte çiftçiler için örnek teşkil etmesi amacıyla yürütülen bu araştırmada materyal olarak yerel Karacadağ çeltiği ile Türkiye’de en çok ekimi yapılan Osmancık-97 çeltik çeşidi kullanılmıştır. Araştırma; GAP Uluslararası Tarımsal Araştırma ve Eğitim Merkezi deneme ta...

Indian Society of Weed Science

An effective inter-row cultivator must destroy the weeds in the inter-row close to crop area without damaging the plants on the rows. Therefore, it is important to understand the soil disturbance of inter-row cultivation tools for optimizing the design and the use of inter-row cultivators. In this study, the performance of two different inter-ro...

Several ground cherry (Physalis) species have attracted significant interest due to their potential use in medicines. Nonetheless, these species are invasive weeds in some regions of the world, while cultivated for food and medicinal uses in the others. Physalis angulata is cultivated for its medicinal potential, whereas P. philadelphica is grown a...

Polygonum perfoliatum L. is an aggressive vine, currently invading the Black Sea region, Turkey. However, information about the seed germination biology of this species is scanty. The objective of the current study was to determine the seed germination biology of three naturalized populations of this species. Chemical scarification with 98% sulfuri...

Rich floristic diversity of Turkey makes it a biodiversity hotspot in the Europe. Unfortunately, no comprehensive database exists for the current distribution maps of weeds and invasive plant species in the country. Species distribution data, particularly of invasive plants and weed species, give empirical information for their successful managemen...

This study reports the first record of Ipomoea coccinea L. [(Convolvulaceae), red morning glory] from Turkey. The literature review revealed that this taxon has not been recorded yet for the flora of Turkey. The species was mainly observed on the embankments along the Ardeşen‐Çamlıhemşin road during 2016. It was again recorded during 2019 with a ce...

The increase in population there is a great necessity to increase crop productivity of staple crops but the productivity and qualıty is greatly affected by various environmental stress factors. Therefore, there is a great necessity of inter-disciplinary study to address this issue. Cereal grains are one of the main sources of human caloric intake a...

Bitkisel üretimde ekonomik verim kaybına neden olan en önemli faktörlerden birisi de yabancı otlardır. Yabancı otlar kültür bitkileri ile rekabete girerek ve allelopatik etkileri ile kültür bitkilerini olumsuz etkilemeleri yanında kültür bitkileri üzerinde parazit olarak yaşamak suretiyle verim ve kalite kayıplarına neden olmaktadırlar. Çalışma ile...

Bitkisel üretimde ekonomik verim kaybına neden olan en önemli faktörlerden birisi de yabancı otlardır. Yabancı otlar kültür bitkileri ile rekabete girerek ve allelopatik etkileri ile kültür bitkilerini olumsuz etkilemeleri yanında kültür bitkileri üzerinde parazit olarak yaşamak suretiyle verim ve kalite kayıplarına neden olmaktadırlar. Çalışma ile...

Common ragweed (Ambrosia artemisiifolia L.) is an allergenic invasive weed rapidly expanding its distribution range throughout Europe. Seed dormancy is among the most important seed adaptation traits, helping colonizing plants to avoid adverse environmental conditions. Furthermore, knowledge of seed dormancy enables to predict the seed germination...

Sebzeler taze olarak da tüketildiğinden hem zehirli yabancı otlarla karışık olmaması hem de pestisit kalıntısı içermemesi gerekmektedir. Bu nedenle sebze alanlarında görülen yabancı otların belirlenmesi hem insan sağlığı hem de yabancı ot kontrolü yönüyle büyük önem taşımaktadır. Uygun iklim koşullarının da bir sonucu olarak Siirt ilinde sebze üret...

Bu çalışma, erken ve geç ekim zamanlarında (sonbahar yağışları öncesi ve sonrası), buğday sonrası ekilen kırmızı mercimek bitkisinin ekiminde uygulanan azaltılmış toprak işleme, doğrudan ekim ve geleneksel toprak işlemede kullanılan farklı ilaçlama yöntemlerinin yabancı ot gelişimi ve ilaç kullanım etkinliğinin belirlenmesi amacıyla yapılmıştır. Di...

Background: Viticulture occupies an important place in agricultural production of Diyarbakır province, Turkey. However, weeds significantly impair the productivity of vineyards in the province. The knowledge of weed flora of a particular region is crucial to develop region-specific weed management strategies. Methods: This study was carried out to...

A field experiment was conducted to examine the impacts of the rolling times [pre-emergence and post-emergence] and the packing force levels of land roller [0 kNm-1, 2.15 kNm-1, 2.70 kNm-1, 3.27 kNm-1, 3.84 kNm-1, 4.41 kNm-1] on the disease severity of Ascochyta blight (AB), total weed density, dry weed biomass weight, the density of dominant weed...

Common ragweed (Ambrosia artemisiifolia L.) is an invasive species, and is currently spread in different habitats over several regions in Turkey. However, no information exists on the seed germination biology of Turkish populations. Therefore, the seed germination niche (upper and lower limits of environmental conditions for seed germination) was d...

In cotton (Gossypium hirsutum L.) agriculture, very loose soil results in reduced seed emergence and stand establishment because the contact between soil and seed is deficient. Therefore, the use of a planker before planting may help firm seedbeds and improve stand establishment. The objective of this study is to determine the effects of different...

In the South East Anatolia region of Turkey as well as in many parts of world, soil planker is used to level and firm the soil prior to planting of cotton (Gossypium hirsutum L.) at least four times. However, excessive soil compaction due to using of planker can increase soil strength and hamper root growth. This study aimed to investigate the effe...

This article presents new records of fungi and downy mildews in Turkey on different weeds of agrophytocoenosis. These records include Plectosphaerella alismatis (Oudem.) A.J.L. Phillips, Carlucci & M.L. Raimondo (on Alisma plantago-aquatica L.), Pyricularia grisea Sacc. (on Setaria viridis (L.) P. Beauv.), Phakopsora artemisiae Hirats. (on Artemisi...

Citrus is an important export commodity, mostly grown on Mediterranean and Aegean coasts of Turkey. Weeds are hidden foes impairing citrus productivity. Limited knowledge of weed distribution and factors affecting the distribution are among major hurdles in successful weed management. In this study, weed flora of citrus orchards and factors affecti...

Burcucumber (Sicyos angulatus L.) is a highly invasive vine that has become naturalized in the humid Black Sea region of Turkey, but previous to this study there was no information on the germination biology of this weed. The germination biology of three naturalized populations of burcucumber from the Black Sea region was studied in laboratory and...

Two Solanaceae invasive plant species (Physalis angulata L. and P. philadelphica Lam. var. immaculata Waterfall) infest several arable crops and natural habitats in Southeastern Anatolia region, Turkey. However, almost no information is available regarding germination biology of both species. We performed several experiments to infer the efects o...

Niche distribution models accurately predict the potential distribution range of invasive plants into new habitats based on their climatic requirements in the native regions. However, these models usually ignore the marginal habitats which can limit the distribution of exotic plants. We therefore tested the seedling survival, growth and nutrient ac...

Maize (Zea mays L.) is widely cultivated in Black Sea and Marmara regions of Turkey. European Corn Borer (ECB) damages the maize crop in both regions. Recently, numerous invasive plant species have been observed in agricultural areas, abandoned lands and along roadsides of both regions. The objective of the current study was to determine whether...

Turkey has a long history of floristic research and hosts some 12000 plant species. However, there have been much less works concentrated on tracking the alien plant species in the country. A recent study has identified 340 alien taxa in the country, which is comparatively much less than rest of the Europe. New species are being identified for the...

Lentil (Lens culinaris Medik.) is among the oldest domesticated crops in the world and has an important role in human and animal nutrition. Lentil is widely grown in Southeastern Anatolia Region, Turkey. Broomrapes are the family of parasitic plants, which threaten the production of grain legumes globally. Several members of broomrapes infest the r...

Common ragweed (Ambrosia artemisiifolia L.) is a notorious invasive plants of the world which poses severe agricultural, economic and human health impacts. It is currently infesting different habitats such as agriculture, roadsides, abandoned lands in the country and suspected as a serious hazard to sunflower production and human health. Additional...

Plant invasion around the world is creating serious environmental, ecological and agricultural concerns. Mile-a-minute weed [Persicaria perfoliata (L.) H. Gross] is an invasive vine and colonizes open and warm areas, along the edges of woods, wetlands, stream banks, roadsides, and sometimes cultivated fields. Excessive Mile-a-minute weed invasion h...

The purpose of the present work was to determine the phenolic and the fatty acids profiles by LC-MS/MS and GC/MS with their antioxidant, anticholinesterase and antimicrobial activities, and aflatoxin contents of Malva neglecta and Malvella sherardiana. The phenolic contents of M. neglecta and M. sherardiana were determined by LC-MS/MS. Malic and 4-...

The study was carried out to determine the associated insect species feeding on Chrozophora tinctoria (L.) Rafin. (Euphorbiaceae), growing in cornfield, vegetables and cotton fields of Diyarbakir and Adiyaman provinces in 2014. As a result of this study, Phycita diaphana (Staudinger, 1870) (Lepidoptera: Pyralidae) adults were reared from both provi...

Globalization have improved trade activities across the continents however, created several serious problems. Rapid spread and establishment of invasive alien species (IAS) through global trade are important issue being addressed globally. European Union, recently agreed to increase the number of IAS of concern. Turkey, on the other hand have made...

Bur cucumber (Sicyos angulatus L., SIYAN) is a troublesome invasive vine. Seeds of the plant possess a water-impermeable,hard seed coat exhibiting physical dormancy. Seed dormancy is employed by the invasive plants for persistence in soil seed bank, seedling recruitment and avoiding unfavorable environmental conditions. The seed dormancy differe...

Invasive plants are recognized for their impressive abilities to withstand adverse environmental conditions however, all invaders do not express the similar abilities. Therefore, survival, growth, nutrient uptake and fecundity of two co-occurring, invasive Physalis species were tested under water and salinity stresses, and different soil textures i...

Changing climatic conditions and curious nature of human beings lead to the extinction of many plant species annually. However, ever increasing population of globe demands for discovering new species and a considerable number of species are being discovered. Ruthless use of recently identified species for their edible, industrial and medicinal u...

Bur cucumber (Sicyos angulatus L., SIYAN) is a troublesome invasive vine. Seeds of the plant possess a water-impermeable,hard seed coat exhibiting physical dormancy. Seed dormancy is employed by the invasive plants for persistence in soil seed bank, seedling recruitment and avoiding unfavorable environmental conditions. The seed dormancy differe...

Increased incidences of exotic plant invasion are being reported throughout the world in recent years. These plants compete with agricultural crops, reduce native biodiversity, alter nutrient cycles and incur heavy economic , ecological and environmental costs. The plant invasion studies are extremely limited in Turkey and almost no study has been...

Intensive trade, transport and travel activities across different geographic regions are prime source of introduction and spread of alien plant species. The role of roadsides in the long distance transport and spread of alien plants has been well explored whereas, railways are less considered in this context. Therefore, current survey was aimed to...

Invasive plants undergo adaptive and evolutionary changes in non-native habitats for a successful establishment. Increased incidences of two tropical ground cherry species (Physalis angulata L. and Physalis philadelphica Lam. var. immaculate Waterfall) have been reported in the irrigated field crops of semi-arid regions in Turkey. As both weeds are...

Common ragweed (Ambrosia artemisiifolia L.) is noxious invader causing severe pollen allergies. Ragweed has extended its range over a considerable portion of the Turkey after its first record in 1998. Ragweed infestation in agricultural areas (particularly in sunflower fields) has recently been reported. The plant has become a detrimental threat to...

The biological invasions on global and regional scales present severe ecological, agricultural and health concerns resulting in considerable economic losses. However, absence of the reliable data on the occurrence of invasive species results in great challenges for their management. Moreover, lack of reporting the first occurrence of exotic species...

The present study was carried out in vineyard fields of Diyarbakır province, Turkey, in 2014 on Centaurea stapfiana (Hand.-Mazz.) Wagenitz (Asteraceae) infested with the larvae of moth Metzneria subflavella Englert (Lepidoptera: Gelechiidae). Metzneria subflavella were obtained from C. stapfiana flower buds collected in vineyard fields. C. stapfian...

Rapid increase and associated negative impacts of invasive alien plants (IAPs) are being increasingly observed around the world. Chemicals are mostly used to manage these plants however, labor requirements, high cost and environmental concerns have necessitated the development of alternative management options. The environmentally safe management o...

Common ragweed (Ambrosia artemisiifolia L.) is a noxious invader, spread almost over whole Europe. Although extensive research on the biology, population dynamics, management options, pollen and seed production etc. have been conducted in other parts of world, limited literature is available for Turkey. The plant was firstly reported in 1998, and r...

The distribution range of invasive plants provide an overview of the invasion success at a given time and space. However, current distribution data are generally scarce at regional and landscape scales. Prediction of potential distribution ranges of invasive plants through niche-based models using available distribution data, climate requirements o...

The increasing number of Invasive Alien Species (IAS) pose sever threats to natural ecosystems, agricultural lands, biodiversity and human health throughout the world. Early Detection, Monitoring and Information Systems (EDMIS) play a key role in reporting the new species at regional scales. This study deals with the development of monitoring and i...

Invasive plants can exert negative effects on native plant communities and biodiversity. Cutleaf groundcherry (Physalis angulata L.) and Mexican groundcherry (Physalis philadelphica Lam. var. immaculata Waterfall) are two annual invasive plants currently invading agricultural and natural habitats in South and South-eastern Anatolia regions of Turke...

Common ragweed is a troublesome allergenic invader and noxious weed of several crops. Despite extensive research to understand the factors affecting its invasion, the role of environmental stresses and soil types on survival and growth is poorly understood. The objective of this study was to determine the effects of drought, salinity, and soil type...

The study was carried out to determine leaf mining insects species feeding on Echium italicum L. (Boraginaceae) (Italian viper's bugloss) growing in wheat fields of Edirne and Samsun provinces in 2013. As result of this study, Dialectica scalariella (Zeller, 1850) (Lepidoptera: Gracillariidae) adults were obtained from the samples collected from bo...

This study was the first phytochemical and biological activity report on Alcea pallida and Alcea apterocarpa extracts. The main constituents of the essential oils were identified as arachidic acid (34.2%) for A. pallida, and hexatriacontane (25.3%) for A. apterocarpa. The main constituents of the fatty acids obtained from petroleum ether extracts o...

Common ragweed invasion poses serious risks to human health, biodiversity and agricultural production throughout the world. Although ragweed has an enormous potential to expand its range in Turkey, studies on ragweed have only concentrated on the Black Sea region. An exploratory survey was conducted to observe the level of ragweed occurrence on the...

This study was aimed at detection of virusin bur cucumber (Sicyos angulatus L.) collected from Black Sea region. Double antibody sandwich enzyme-linked immuno sorbent assay (DAS-ELISA) was used to test the 11 leaf samples for the presence of following viruses; Cucumber Mosaic Virus (CMV), Tobacco Mosaic Virus (TMV), Tomato Mosaic Virus (ToMV), Wate...

This study was aimed at detection of virusin bur cucumber (Sicyos angulatus L.) collected from Black Sea region. Double antibody sandwich enzyme-linked immuno sorbent assay (DAS-ELISA) was used to test the 11 leaf samples for the presence of following viruses; Cucumber Mosaic Virus (CMV), Tobacco Mosaic Virus (TMV), Tomato Mosaic Virus (ToMV), Wate...