Journal of Research in Weed Science

Original Article

A potential benefit of brown seaweed (Stoechospermum marginatum) using for sustainable fabric dyeing

Kiran Rani; M. Kashif Pervez; Aliya Rehman; Shaista Perven; Nasruallah Akhtar; Farman Ahmad

Volume 3, Issue 2 , June 2020, Pages 120-132

https://doi.org/10.26655/JRWEEDSCI.2020.2.1

Abstract

Coastal areas are famous for its diversity and abundance of marine flora and fauna. Several tonns of seaweeds grows annually and during low tide they are easily avaliable either in ... Read More

Original Article

Susceptibility of fleabane (Conyza bonariensis) biotypes to glyphosate in northern cotton farming systems of Australia

Eric Koetz; Md Asaduzzaman

Volume 3, Issue 2 , June 2020, Pages 133-144

https://doi.org/10.26655/JRWEEDSCI.2020.2.2

Abstract

The rapid emergence of herbicide-resistant weeds has further added complexity to the management of weeds in Australian cotton farming systems. Fleabane (Conyza bonariensis L) has been ... Read More

Original Article

Genetic diversity of glyphosate resistant Echinochloa colona

Hoan T Nguyen; Jenna M Malone; Peter Boutsalis; Christopher Preston

Volume 3, Issue 2 , June 2020, Pages 145-161

https://doi.org/10.26655/JRWEEDSCI.2020.2.3

Abstract

Echinochloa colona (L) Link. is a problematic annual grass weed in summer fallows in northern Australian cropping regions where repeated use of glyphosate has resulted in the evolution ... Read More

Review Article

The weed Orobanche: species distribution, diversity, biology and management

T.K Das; Sonaka Ghosh; Kamlika Gupta; Suman Sen; Biswaranjan Behera; Rishi Raj

Volume 3, Issue 2 , June 2020, Pages 162-180

https://doi.org/10.26655/JRWEEDSCI.2020.2.4

Abstract

Weeds are ubiquitous and eternal pests. In India, the total annual loss of agricultural produce by weeds, insects, diseases and other pests are estimated to be 37%, 29%, 22% and 12%, ... Read More

Original Article

Economics and yield of wheat as affected by pre and post-emergence herbicides in western Terai Region of Nepal

Narayan Khatri; Dayanidhi Pokhrel; Bisheshwor Prasad Pandey; Mamata Bista; Mahendra Marasini; Govinda Prasad Paudel; Bishnu Prasad Chaurasiya

Volume 3, Issue 2 , June 2020, Pages 181-187

https://doi.org/10.26655/JRWEEDSCI.2020.2.5

Abstract

A field experiment was conducted to assess the growth, yield and profitability of wheat under different herbicides application in Kapilvastu and Rupandehi district, Nepal during winter ... Read More

Original Article

Assessment of critical period of crop-weed competition in grain sorghum under Sudanian conditions of Southern Senegal

Samba Laha KA; Mame Samba MBAYE; Moustapha GUEYE; Rahimi MBALLO; Baboucar BAMBA; César Bassène; Kandioura NOBA

Volume 3, Issue 2 , June 2020, Pages 188-199

https://doi.org/10.26655/JRWEEDSCI.2020.2.6

Abstract

Weeds are among the most harmful factors limiting sorghum production under Sudanian conditions of southern Senegal. Despite, the taxonomic structure of the flora is relatively well ... Read More Weeds are among the most harmful factors limiting sorghum production under Sudanian conditions of southern Senegal. Despite, the taxonomic structure of the flora is relatively well known, few studies have focused on crop-weed competition. Field experiment was carried out to determine the critical time for weed competition in grain sorghum. Ten treatments, weedy for initial 15, 30, 45 and 60 DAS and then weed-free, and weed-free for initial 15, 30, 45 and 60 DAS and then weedy, weed-free and weedy up to harvest were assigned in a randomized block design with four replications. The beginning and the end of critical period of weed competition were determined respectively under fertilized and unfertilized conditions. The results showed that more the weeds competition is longer, more sorghum parameters of growth and yield are reduced. Sorghum yield were significantly influenced by many factors such as year, nitrogenous fertilization and weeding periods. The highest plant height, dry matter, and yield were recorded in weed free treatment followed by weed free up to 60 DAS and weedy up to 15 DAS. Plant height, dry matter and yield decreased significantly with each increase in competition period. Therefore, the lowest growth parameters and yield were noticed in weedy check treatment followed by weedy up to 60 DAS and weed free up to 15 DAS. Moreover, our findings showed that sorghum height, dry matter and grain yield increased significantly under fertilized conditions compared to unfertilized conditions, which is widely used in traditional cropping system. The maximum competition between crop and weed was between 15-45 and 15-55 DAS under unfertilized conditions (F0) and 10-55 and 15-55 DAS under fertilized conditions (F1), which can be considered as critical period of crop-weed competition. The weeding practice should be adopted during these periods for getting optimum sorghum production under Sudanian conditions of Senegal.

Original Article

Effective Control of an alien invasive tree species (Tabebuia pallida Miers) using chemical herbicides

Anup Thosadu Ramdu; Vineshwar Sharma Gopal; Michée Akshay Appadoo; Julia Eva Carpouron; Vishwakalyan Bhoyroo

Volume 3, Issue 2 , June 2020, Pages 200-213

https://doi.org/10.26655/JRWEEDSCI.2020.2.7

Abstract

Forests in Mauritius are facing an alarming rate of encroachment by alien plant species which are changing the ecosystem function, equilibrium and composition of species and richness. ... Read More

Original Article

Effect of application timings and tank mixture of herbicides on weed suppression, crop growth and yield of wheat

Sharif Ahmed; Md. Jahangir Alam; Tahir Hussain Awan; Bhagirath Singh Chauhan

Volume 3, Issue 2 , June 2020, Pages 214-229

https://doi.org/10.26655/JRWEEDSCI.2020.2.8

Abstract

Herbicides have increasingly become a key component on crop production system because they offer the easiest, cheapest and timely weed management, resulting in higher yield and profit. ... Read More

Original Article

Effectiveness of weed management practices in groundnut (Arachis hypogaea)

D Timsina; Abhisek shrestha; Bharti Thapa

Volume 3, Issue 2 , June 2020, Pages 230-237

https://doi.org/10.26655/JRWEEDSCI.2020.2.9

Abstract

A field experiment was conducted in pre-monsoon season during 2017 and 2018 at National oil seed research program, Nawalpur, Sarlahi, Nepal, to study the impact of weed management practices ... Read More

Original Article

Variability and Host Specificity of Striga hermonthica (Del.) Benth. in Response to in-situ Root Exudates of Sorghum bicolor (L.) Moench

Awadallah B. Dafaallah

Volume 3, Issue 2 , June 2020, Pages 238-253

https://doi.org/10.26655/JRWEEDSCI.2020.2.10

Abstract

Striga hermonthica (Del.) Benth., Orobanchaceae, is an obligate root parasite on important cereal crops. The aim of this study is to investigate variability and host specificity in ... Read More Striga hermonthica (Del.) Benth., Orobanchaceae, is an obligate root parasite on important cereal crops. The aim of this study is to investigate variability and host specificity in the early developmental stages of S. hermonthica parasitism in response to in-situ root exudates of sorghum. Field surveys were conducted during the seasons 2013/14 in Striga endemic areas in Sudan to collect seeds from the parasite. Fifteen S. hermonthica populations were collected. An in vivo experiment was conducted at the University of Gezira, Sudan to study the effects of in-situ root exudates of three sorghum cultivars on percentage of seed germination, haustorium initiation, attachment and penetration. Treatments were arranged in a factorial completely randomized design with three replicates. Data were subjected to the analysis of variance (P £ 0.5). The results revealed the highest percentage of seed germination (46.9-57.5 %), haustorium initiation (73.8-77.9 %), attachment (38.4–40 %) and penetration (20.7–23.7 %) into sorghum root was induced by in-situ root exudates of sorghum cv. Abu-70 and by sorghum cv. Wad Ahmed. While, the lowest percentage of seed germination (53.5 %), haustorium initiation (45.2 %), attachment (5.8 %) and penetration (1.5 %) into sorghum root was induced by in-situ root exudates of Hakika. The results also revealed that percentage of seed germination, haustorium initiation, attachment and penetration of S. hermonthica populations collected from infected sorghum in response to sorghum in-situ root exudates was the highest. While, the percentage of seed germination, haustorium initiation, attachment and penetration of S. hermonthica populations collected from infected millet in response to sorghum in-situ root exudates was the lowest. This study confirms the existence of two levels of physiological specialization in S. hermonthica populations in Sudan. Moreover, two strains of S. hermonthica are one specific to sorghum and the other to millet.

Journal of Research in Weed Science

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Volume & Issue: Volume 3, Issue 2, June 2020, Pages 120-253

A potential benefit of brown seaweed (Stoechospermum marginatum) using for sustainable fabric dyeing

Abstract

Susceptibility of fleabane (Conyza bonariensis) biotypes to glyphosate in northern cotton farming systems of Australia

Abstract

Genetic diversity of glyphosate resistant Echinochloa colona

Abstract

The weed Orobanche: species distribution, diversity, biology and management

Abstract

Economics and yield of wheat as affected by pre and post-emergence herbicides in western Terai Region of Nepal

Abstract

Assessment of critical period of crop-weed competition in grain sorghum under Sudanian conditions of Southern Senegal

Abstract

Effective Control of an alien invasive tree species (Tabebuia pallida Miers) using chemical herbicides

Abstract

Effect of application timings and tank mixture of herbicides on weed suppression, crop growth and yield of wheat

Abstract

Effectiveness of weed management practices in groundnut (Arachis hypogaea)

Abstract

Variability and Host Specificity of Striga hermonthica (Del.) Benth. in Response to in-situ Root Exudates of Sorghum bicolor (L.) Moench

Abstract