scholarly journals Weed control efficacy of combined application of grass pea and mustard crop residues in T. aman rice

2021 ◽  
Vol 6 (2) ◽  
pp. 134-141
Author(s):  
Showrav Ashraf ◽  
Uttam Kumer Sarker ◽  
Suriaya Perveen ◽  
Mohammad Shahidul Islam ◽  
Shah Golam Azam ◽  
...  
Keyword(s):  
Weed Control ◽  
Crop Residues ◽  
Grass Pea ◽  
Allelopathic Potential ◽  
Straw Yield ◽  
Combined Application ◽  
Weed Growth ◽  
Combined Use ◽  
Mustard Crop ◽  
Hand Weeding

Among different methods of weed control, allelopathy could lead to reduced labor costs and increased efficiency, without any adverse effects on the environment. In this regard, an experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to evaluate the allelopathic potential of grass pea and mustard crop residues on weed suppression and crop performance of transplanted aman rice. The experiment consisted of three cultivars of T. aman rice viz., Binadhan-7, BRRI dhan49 and BR11 and five different level of crop residues such as no use of crop residues, grass pea crop residues @ 2.5 t ha-1, mustard crop residues @ 2.5 t ha-1, combined use of grass pea and mustard crop residues @ 1 t ha-1 of each and hand weeding. All crop residues applied in the experiment suppressed weed growth and inhibition at satisfactory level. The experiment was laid out in a randomized complete block design with three replications. Weed population, weed dry weight and percent inhibition of weed were not significantly influenced by the interaction effect of crop residues (grass pea and mustard) and cultivars. BR11 produced the highest grain and straw yield among the treatment combination. The highest numbers of tillers hill-1, numbers of grains panicle-1, 1000-grain weight, grain yield, straw yield were observed in hand weeding, followed by combined application of grass pea and mustard crop residues @ 1 t ha-1 of each treatment. The highest grain and straw yield (4.81 t ha-1 and 7.65 t ha-1) was observed in hand weeding along with variety BR11 and the second highest (4.19 t ha-1 and 7.36 t ha-1) was obtained from combined use of grass pea and mustard crop residues @ 1 t ha-1 of each. The results of this study indicate that hand weeding followed by combined application of grass pea and mustard crop residues @ 1 t ha-1 of each showed potential activity to suppress weed growth.

scholarly journals Aqueous Extract of Mustard Crop Residues on Weed Management and Crop Performance of Wheat

2021 ◽  
Vol 18 (2) ◽  
pp. 17-26
Author(s):  
D Sarkar ◽  
MR Uddin ◽  
SK Paul ◽  
UK Sarker ◽  
F Ahmed ◽  
...  
Keyword(s):  
Grain Yield ◽  
Aqueous Extract ◽  
Weed Management ◽  
Crop Production ◽  
Crop Residues ◽  
Straw Yield ◽  
Weed Growth ◽  
Crop Performance ◽  
Mustard Crop ◽  
Hand Weeding

Allelopathy is expected to be an important mechanism in the plant invasion process. The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to evaluate the effect of aqueous extract of mustard crop residues on weed management and crop performance of wheat. The experiment consisted of three cultivars of wheat viz., BARI Gom 19, BARI Gom 21, BARI Gom 24 and five levels of aqueous extract such as no crop residues (C0), mustard crop residues: chaffed leaves soaked in water in 1:20 ratio (w/v) (C1), 1:30 ratio (w/v) (C2), 1:40 ratio (w/v) (C3), hand weeding (C4). The maximum weed growth was noticed with the cultivar BARI Gom 19 and the minimum was found in the cultivar BARI Gom 21. The grain yield as well as the other yield contributing characters produced by BARI Gom 21was the highest among the studied varieties. The highest percent inhibition of all weed species was caused by hand weeding. The highest numbers of tillers hill-1, numbers of grains spike-1, 1000 grain weight, grain yield and straw yield were observed where hand weeding is done and followed by the application of aqueous extract in 1:20 ratio (w/v). BARI Gom 21 cultivar with all treatments produced the highest grain and straw yield among the treatment combination. The results indicate that different amount of aqueous extract of mustard crop residues showed potential activity to suppress weed growth and it has a significant effect on the yield of wheat. Therefore, mustard crop residues might be used as an alternative way for weed management in effective and sustainable crop production. SAARC J. Agri., 18(2): 17-26 (2020)

scholarly journals Allelopathic potential of mustard crop residues on weed management and performance of transplant Aman rice

2017 ◽  
Vol 15 (2) ◽  
pp. 133-139
Author(s):  
MN Hossain ◽  
MR Uddin ◽  
UK Sarker ◽  
S Ferdousi ◽  
MJ Uddin
Keyword(s):  
Grain Yield ◽  
Weed Management ◽  
Crop Residues ◽  
Block Design ◽  
Crop Productivity ◽  
Weed Species ◽  
Allelopathic Potential ◽  
Straw Yield ◽  
Percent Inhibition ◽  
Mustard Crop

Crop allelopathy may be useful to minimize serious problems in the present agricultural production such as environmental pollution, unsafe production, human health concerns, depletion of crop diversity, soil sickness and reduction of crop productivity. In this phenomenon an experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to evaluate the effect of crop residues of mustard on weed management and crop performance of T. aman rice. The experiment consisted of three cultivars of T. aman rice viz., BR11, BR23 and BRRI dhan49 and five different level of mustard crop residues such as no crop residues, mustard crop residues @ 0.5, 1.0, 1.5 and 2.0 t ha–1. The experiment was laid out in a randomized complete block design with three replications. Five weed species belonging to three families infested the experimental plots. Weed population, weed dry weight and percent inhibition of weed were significantly influenced by mustard crop residues and cultivar. The maximum weed growth was noticed with the cultivar BR23 and the minimum was found in the cultivar BR11. The grain yield as well as the other yield contributing characters produced by BR11 was the highest among the studied varieties. The highest percent inhibition of 71.17, 69.19, 80.88, 70.48 and 86.97 was in Shama (Echinochlo acrusgalli), Panishapla (Nymphaea nouchali), Panichaise (Scirpus juncoides), Panikachu (Monochoria vaginalis) and Susnishak (Marsilea quadrifolia), respectively which was caused by the application of mustard crop residues @ 2 t ha–1. The highest loss of grain yield was obtained where no crop residues were incorporated. The highest numbers of tillers hill-1, numbers of grains panicle–1, 1000-grain weight, grain yield, straw yield were observed where mustard crop residues were incorporated @ 2.0 t ha–1. BR11 cultivar with all treatments produced the highest grain and straw yield among the treatment combination. The results of this study indicate that different amount of mustard crop residues showed potential activity to suppress weed growth.J. Bangladesh Agril. Univ. 15(2): 133-139, December 2017

Allelopathic potential of marshpepper residues for weed management and yield of transplant Aman rice

2020 ◽  
Vol 30 (4) ◽  
pp. 379-386
Author(s):  
SK Pramanik ◽  
MR Uddin ◽  
UK Sarker ◽  
D Sarkar ◽  
F Ahmed ◽  
...  
Keyword(s):  
Grain Yield ◽  
Weed Management ◽  
Crop Production ◽  
Crop Residue ◽  
Crop Residues ◽  
Block Design ◽  
Allelopathic Potential ◽  
Weed Growth ◽  
3.0 T ◽  
Hand Weeding

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, during the period from June to December 2016 to evaluate the effect of marshpepper (Polygonum hydropiper L.)  crop residues on weed management and crop performance of transplant aman rice. The experiment consisted of three cultivars viz.  BR11, BRRI dhan33 and BRRI dhan49 and five marshpepper crop residues treatment such as 0, 1.0, 2.0, 3.0 ton ha-1 and hand weeding. The experiment was laid out in a randomized complete block design (RCBD) with three replications. Five weed species belonging to four families infested the experimental plots. Weed population and weed dry weight were significantly affected by cultivar and crop residues treatment. The highest percent inhibition of all the studied weed was found by hand weeding. The second highest percent weed inhibition was found with the application of marshpepper residues at 3.0 t ha-1 which was 63.43, 63.43, 52.85, 52.40 and 59.12 percent for sabuj nakful (Cyperus difformis), chesra (Scirpus juncoides), shama (Echinochloa crusgalli) panikachu (Monochoria vaginalis) and panishapla (Nymphaea nouchali ) respectively. The maximum weed growth was noticed with the cultivar BRRI dhan33 variety and the minimum was found in the cultivar BRRI dhan49. The grain yield as well as the yield contributing characters produced by BRRI dhan49 was the highest among the studied varieties. The highest reduction of grain yield was obtained in no crop residue treatment. The highest number of effective tillers hill-1, number of grains panicle-1, 1000-grain weight, grain and straw yields were observed in marshpepper residues in hand weeding followed by 3.0 t ha-1 marshpepper crop residue. BRRI dhan49 produced the highest grain and straw yields under hand weeding followed by marshpepper residues 3.0 t ha-1 treatment. Results of this study indicate that marshpepper residues showed potentiality to inhibit weed growth and it has a significant effect on the yield of transplant aman rice. Therefore, marshpepper residues might be used as an alternative way for weed management effective and sustainable crop production. Progressive Agriculture 30 (4): 379-386, 2019

scholarly journals Evaluation of different post-emergence herbicides in chickpea (Cicer arietenum L.)

2020 ◽  
Vol 1 (1) ◽  
pp. 87-91
Author(s):  
Indrajeet Niranjan ◽  
◽  
Shashank Tyagi ◽  
Birendra Kumar ◽  
Amit Pradhan
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Harvest Index ◽  
Dry Weight ◽  
Rabi Season ◽  
Straw Yield ◽  
Net Returns ◽  
Weed Growth ◽  
Hand Weeding ◽  
Quizalofop Ethyl

A field experiment was conducted during rabi season of 2018-2019 at research farm of Bihar Agricultural University, Sabour, Bhagalpur to assess the effect of various post-emergence herbicides in chickpea. The results indicated that among different herbicides, post-emergence application of imazethapyr + imazamox @ 60 g a.i. ha-1 at 20 days after sowing recorded significantly lowest weed density & weed dry weight at 60 days after sowing and highest weed control efficiency at harvest, which was statistically at par with quizalofop-ethyl + imazethapyr @ 60+50 g a.i. ha-1 at 20 days after sowing. As a consequence of effective weed control, quizalofop-ethyl + imazethapyr @ 60+50 g a.i. ha-1 at 20 days after sowing recorded significantly highest grain yield, straw yield and harvest index which was significantly superior over hand weeding twice at 30 and 50 days after sowing. In weedy check, uncontrolled weed growth caused significant reduction in grain yield of chickpea. Net returns and B:C ratio was found maximum with quizalofop-ethyl + imazethapyr @ 60+50 g a.i. ha-1 at 20 days after sowing which was significantly superior over weedy check.

scholarly journals EFFICACY OF VARIETY AND MUSTARD CROP RESIDUES ON WEED MANAGEMENT AND CROP PERFORMANCE OF TRANSPLANT AMAN RICE

2020 ◽  
Vol 2 (2) ◽  
pp. 33-40
Author(s):  
Md. Abdullah- Al-Nomun ◽  
Md. Romij Uddin ◽  
Ahmed Khairul Hasan ◽  
Md. Sohanur Rahman ◽  
Nahid Kaisar ◽  
...  
Keyword(s):  
Weed Management ◽  
Crop Residues ◽  
Block Design ◽  
Dry Weight ◽  
Ecological Condition ◽  
Percent Inhibition ◽  
Weed Growth ◽  
Crop Performance ◽  
Mustard Crop ◽  
Hand Weeding

Weed infestation in rice field is always subject to agro ecological condition and growing seasons. Weeds cause major yield losses in crops and also reduce their quality. An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to investigate the efficacy of mustard crop residues on weed management and crop performance of transplant aman rice. The experiment consisted of three cultivars and five different levels of mustard crop residues. The experiment was laid out in a randomized complete block design with three replications. Weed population, weed dry weight and percent inhibition of weed were significantly influenced by mustard crop residues and cultivar. The maximum weed growth was noticed with the cultivar BRRI dhan34 and the minimum was found in the cultivar BRRI dhan49. The grain yield and other yield contributing characters produced by BRRI dhan49 was the highest among the studied varieties. The highest percent inhibition of 73.36, 78.82, 71.90, 76.83 and 81.53 found in Pani kachu, Chechra, Pani shapla, Shama and Sabuj nakful, respectively with the application of mustard crop residues at 3.0 t ha-1 + one hand weeding. It can be concluded that BRRI dhan49 and mustard crop residues showed potentiality to inhibit weed growth and it has a significant effect on the yield of transplant aman rice. Therefore, mustard crop residues could be recommended to use as an alternative tool for weed management.

Effect of cross ploughing on weed control of direct seeded rice in Manipur

2016 ◽  
Vol 35 (1) ◽  
Author(s):  
K. Nandini Devi ◽  
M. Sumarjit Singh
Keyword(s):  
Weed Control ◽  
Agricultural Production ◽  
Field Experiments ◽  
Control Method ◽  
Minimum Cost ◽  
Plant Populations ◽  
Straw Yield ◽  
Economic Method ◽  
Direct Seeded ◽  
Hand Weeding

Field experiments were conducted at Research Farm, Central Agricultural University, Imphal during <italic>kharif</italic> 2011 and 2012 to study the effect of cross ploughing on weed control of wet- direct seeded rice in Manipur. Maximum plant population was observed in control and once hand weeding without cross ploughing treatments as compared to other treatments. But maximum number of panicles per metre square, grain and straw yield were significantly higher in cross ploughing thrice followed by cross ploughing twice than the other treatments after cross ploughing. Plant populations as well as number of weeds were significantly lower in the treatment cross ploughing thrice at 25 days after sowing. Thus cross ploughing twice at 25 days after sowing of wet –direct seeded rice was found to be the best economic method of weed control for obtaining highest B:C ratio with minimum cost of cultivation in both the years. This weed control method of cross ploughing in wetdirect seeded rice is of great significance in conserving the natural resources and maintaining the sustainability of the agricultural production system.

scholarly journals Allelopathic Potential of Teff Varieties and Effect on Weed Growth

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 854
Author(s):  
Haftamu Gebretsadik Gebrehiwot ◽  
Jens Bernt Aune ◽  
Ole Martin Eklo ◽  
Torfinn Torp ◽  
Lars Olav Brandsæter
Keyword(s):  
Competitive Ability ◽  
Field Experiments ◽  
Agronomic Traits ◽  
Plant Biomass ◽  
Block Design ◽  
Allelopathic Potential ◽  
Allelopathic Activity ◽  
Weed Growth ◽  
Four Blocks ◽  
Hand Weeding

Allelopathic potential of 10 teff varieties was assessed in laboratory experimentation (conducted in NIBIO, Norway), and determined with an agar-based bioassay using ryegrass and radish as model weeds. Field experiments were conducted in Tigray, Ethiopia during 2015 and 2016 to identify the most important agronomic traits of teff contributing to its weed competitive ability. A split plot design with three blocks was used considering hand weeding as the main plot and varieties as the subplot. Randomized complete block design (RCBD) with four blocks was used in the laboratory experiment. The highest potential allelopathic activity (PAA) and specific potential allelopathic activity (SPAA) were recorded from a local landrace with an average PAA value of 11.77% and SPAA value of 1.21%/mg respectively, when ryegrass was used as the model weed. ‘Boset’ had the highest average PAA value of 16.25% and an SPAA value of 1.53%/mg, when using radish as the model weed. The lowest PAA and SPAA values were recorded from ‘DZ-Cr-387′ when using ryegrass and radish as model weeds. Days to emergence, height, tiller no./plant, biomass yield, and PAA of the crop significantly contributed to the variance of the weed biomass, cover, and density. Hence, they were the most important agronomic traits enhancing the competitive ability of teff.

scholarly journals Effect of Weed Management Practices on Weed Growth and Yield of Greengram (Vigna radiata (L.) Wilczek) in Southern Rajasthan

2020 ◽  
pp. 12-19
Author(s):  
Arvind Verma ◽  
Roshan Choudhary
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Green Gram ◽  
Growth And Yield ◽  
Leaf Stage ◽  
Net Returns ◽  
Weed Growth ◽  
Hand Weeding ◽  
The Impact

A Field experiment was conducted at Agronomy instructional Farm, Rajasthan College of Agriculture, MPUAT, Udaipur (Rajasthan) during 2016-17 to find out the impact of new generation herbicides in green gram.  The results revealed that all growth and yield characters of blackgram were significantly affected by distinct weed control practices. A similar trend was also observed in weed parameters. Higher seed yield (13.8 qha-1) and higher weed control efficiency (88.97%) were recorded under application of acifluorfen sodium + clodinafop propargyl (370 g a.i. ha-1) at 3-4 leaf stage and which comparable with pre-emergence application of pyroxasulfone +pendimethalin (TM) 127.5+1000 g a.i/ha, imazethapyr+ quizalofop (TM) use at 70 + 60 g a.i/ha at 3-4 leaf stage, imazethapyr 70 g a.i/ha 3-4 leaf stage, imazethapyr + imazamox (RM) use at 70 g a.i/ha at 3-4 leaf stage, pendimethalin fb quizalofop 1000 + 60 at pre-emergence & 3- 4 leaf stage, imazethapyr + pendimethalin (RM) 1000 g a.i/ha as pre-emergence, propaquizfop 75 g a.i/ha at 3-4 leaf stage, weedy check and two hand weeding twice at 20 & 40 DAS. They also recorded improvement in yields and net returns by 65.22% over weedy check. These herbicide ready-mixes may be a promising weed management strategy for the green gram grown in the Southern Rajasthan.

scholarly journals Experiences with Weed Discs and Other Nonchemical Alternatives for Container Weed Control

2003 ◽  
Vol 13 (1) ◽  
pp. 23-27 ◽  
Author(s):  
Calvin Chong
Keyword(s):  
Weed Control ◽  
Water Use ◽  
Unit Cost ◽  
Peat Moss ◽  
The Past ◽  
Weed Growth ◽  
Corrugated Cardboard ◽  
Hand Weeding ◽  
New Generation ◽  
Small Holes

The first weed disc (Weed Guard) was introduced to Ontario in the early 1980s. They were made of semirigid plastic similar to 45-rpm records. Small holes allow water to penetrate but weeds germinating on the substrate often grow through them. In the 1990s, we obtained 85% reduction of container weeds using discs made from geotextile fabric (Mori Guard) or foam (similar to polyfoam used for container winter protection). The foam disc tended to curl upward at the edges, become easily windblown, and tended to partially expose the surface of the container mix. During the past 15 years, we have annually reused the same fabric discs (now unavailable due to high unit cost), and have tested various other weed discs, including several new-generation types and also the Mori Weed Bag. The new-generation discs are fabricated from materials such as fabric (Tex-R Geodisc), pressed peat moss (Biodisc), corrugated cardboard (Corrudisc), and plastic (Enviro LID). Both Tex-R Geodisc and Enviro LID were as effective or better in controlling weeds than weekly hand-weeding, herbicides, or the Mori Guard fabric disc. The Mori Weed Bag, a patented black polyethylene sleeve with prepunched holes fitted around the container like a florist's plant prepared for market, is used effectively and almost exclusively by one Ontario nursery. We also tested two types of insulated blanket covers, which when placed around the ball of above-ground container-grown trees, prevented weed growth during the summer and also protected the root ball against cold during the winter. We introduced the garbage bag sleeve, the ultimate no-weed method for pot-in-pot tree culture, which also reduces water use and frequency of irrigation. Due to factors such as under-performance, insufficient demand, and/or high costs, only certain discs are currently manufactured: Weed Guard, Tex-R Geodisc, Biodisc, and Enviro LID. The Mori Weed Bag is available but not the insulated blankets.

scholarly journals Allelopathic Allelopathic impact of sorghum on weed management, yield and quality of maize under different seed rates

2021 ◽  
Vol 27 (4) ◽  
pp. 513-526
Author(s):  
Tariq Ahmed Keerio ◽  
Muhammad Nawaz Kandhro ◽  
Ahmed Naqi Shah ◽  
Muhammad Ibrahim Keerio ◽  
Ghulam Murtaza Jamro
Keyword(s):  
Weed Control ◽  
Plant Extracts ◽  
Weed Management ◽  
Growth And Yield ◽  
Mature Plant ◽  
Allelopathic Potential ◽  
Seed Rate ◽  
Weed Density ◽  
Hand Weeding ◽  
Kernel Yield

A field study was carried out to estimate the allelopathic potential of sorghum immature and mature plant extracts under various seed rates on weeds density and yield of maize cultivar Dadu Maize-I. The experiment contained of different weed control practices i.e., control (No weeding), various levels of sorghum immature and mature plant extracts, herbicides and hand weeding under various seed rates (20, 25, 30 & 35 kg per ha). The analysis of variance showed that various weed control practices demonstrated substantial decrease in weeds and caused increase in kernel yield over control. The application of sorghum immature extract @ 15 L per ha in combination with herbicide (Mesotrione Atrazine) @ 1.0 L per ha decreased effectively weed density (m-2) and dry biomass (g m-2) and resultantly produced superior growth and yield traits particularly kernel yield (t per ha) of maize. Sorghum mature plant extract @ 15 L per ha in integration with herbicide (Mesotrione Atrazine) @ 1.0 L per ha ranked 2nd in effectiveness of controlling weeds as well as increasing maize kernel yield (t per ha). As much as effect of seed rates is concerned, the least weed density (m-2) and greatest kernel yield (t per ha) were noticed in seed rate 35 kg per ha but optimal kernel yield (t per ha) was record in seed rate 30 kg per ha. Hence, the results suggested that combination of plant extracts and herbicide at reduced doses controlled weeds efficiently and optimum enhancement in kernel yield of maize was noticed at seed rate 30 kg per ha.

Sign in / Sign up

Export Citation Format

Share Document