scholarly journals MINIMUM TILLAGE NON-PUDDLED TRANSPLANTED RICE (ORYZA SATIVA L.): WEED CONTROL AND ECONOMICS UNDER CONSERVATION AGRICULTURE PRACTICE IN BANGLADESH

2021 ◽  
Vol 5 (2) ◽  
pp. 47-55
Author(s):  
Mohammad Mobarak Hossain ◽  
Mahfuza Begum ◽  
Abul Hashem ◽  
Md. Moshiur Rahman ◽  
Richard W. Bell
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Crop Production ◽  
Oryza Sativa L ◽  
Conservation Agriculture ◽  
Conventional Tillage ◽  
Weed Density ◽  
Hand Weeding ◽  
Strip Tillage ◽  
Rice Residues

Crisis of agricultural laborers in South Asia’s rural zones is pushing to pursue a labor-saving conservation agriculture strategy for crop production and weed control. Non-puddled transplanting and mulching residues of the previous crop are being developed for rice-based cropping systems in Bangladesh to address this issue. Hence, the present study was undertaken to determine the effectiveness of strip tillage vs. conventional tillage combined with previous rice residues relative to herbicides and hand weeding on weed control and grain yield of winter rice during January-May in 2015 and 2016. Rice cv. BRRI dhan28 was transplanted with a combination of six treatments: puddled conventional tillage (CT)+3 hand weeding (HW) (Control); Preplant (PRE) herbicide (glyphosate)+non-puddled strip tillage (ST)+1HW; PRE+ST+pre-emergence (PE) herbicide (pendimethalin); PRE+ST+post-emergence (PO) herbicide (ethoxysulfuron-ethyl); PRE+ST+PE+PO; PRE+ST+weed-free (WF); and two levels of rice residues: no-residue (R0) vs. 50% standing residue (R50). The CT had done using a two-wheel tractor (2WT) by four ploughings and cross ploughings followed by levelling. A Versatile Multi-Crop Planter (VMP) was used for ST in a single pass operation. Over the two years, PRE+ST+PE+PO reduced weed density by 40% in the first year and 50% in the second year and weed biomass by 70% than CT+3HW in both years. Retention of 50% residue reduced weed density by 20% and biomass by 34%. The highest grain yield (12% higher than CT+3HW without residue) was obtained from PRE+ST+WF with 50% residue, while the highest BCR (47% higher over CT+3HW without residue) was obtained from PRE+ST+PE+PO with 50% residue.

scholarly journals MULCHING AND WEED MANAGEMENT EFFECTS ON THE PERFORMANCE OF RICE (ORYZA SATIVA L.) TRANSPLANTED IN NON-PUDDLED SOIL

2020 ◽  
Vol 3 (1) ◽  
pp. 13-21
Author(s):  
Mohammad Mobarak Hossain ◽  
Mahfuza Begum ◽  
Abul Hashem ◽  
Md. Moshiur Rahman ◽  
Richard W. Bell
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Weed Management ◽  
Oryza Sativa L ◽  
Conventional Tillage ◽  
Point Of View ◽  
Weed Biomass ◽  
Weed Density ◽  
Hand Weeding ◽  
Puddled Soil

Labour shortage is pushing the smallholder farms to seek for labour saving strategies for planting and weed control. With this point of view, this study was undertaken to determine the effectiveness of mulching from previous crop relative to herbicides and hand weeding on weed control and grain yield of rice transplanted in non-puddled soil after mustard in the northern Bangladesh during January to May in 2014 and 2015. Rice cv. BRRI dhan28 was transplanted with a combination of six weed control practices [Conventional tillage (CT)+3 hand weeding (HW) (Control); Glyphosate (Gly)+strip tillage (ST)+1HW; Gly+ST+pre-emergence (PE) herbicide (pendimethalin); Gly+ST+post-emergence (PO) herbicide (Ethoxysulfuron-ethyl); Gly+ST+PE+PO; and Gly+ST+weed-free (WF)], and two levels mulch of previous mustard [M0: no mulch and M50: 50% mulch (875 kg ha-1). Over the two years, CT produced 30% higher weed density and 40% higher weed biomass than ST. Spraying herbicides at PE followed by at PO in ST reduced weed density by 45% and weed biomass by 70%. Retention of 50% mulch reduced weed density by 20% and biomass by 34%. The combination of applied glyphosate, ST, followed by sequential application of PE and PO herbicides and the retention of 50% mulch achieved the highest weed control efficacy. Furthermore, this practice produced the 12% higher yield and 47% higher economic returns relative to manual weed control in conventional tillage. These results demonstrate the value of mulch integrated with pre-plant, PE and PO herbicides in controlling weeds and improving grain yield and return of rice transplanted in a non-puddled soil.

scholarly journals Effect of water management and weed control treatments on the performance of transplanted aman rice

1970 ◽  
Vol 33 (3) ◽  
pp. 399-408 ◽  
Author(s):  
MH Kabir ◽  
MN Bari ◽  
M Moynul Haque ◽  
GJU Ahmed ◽  
JMS Islam
Keyword(s):  
Water Management ◽  
Grain Yield ◽  
Weed Control ◽  
Management Practices ◽  
Weed Biomass ◽  
Weed Density ◽  
Control Efficiency ◽  
Free Treatment ◽  
Weed Control Efficiency ◽  
Hand Weeding

A study was conducted from June to December 2003 to assess weed dynamics and yield performance of transplanted aman rice (cv. BRRI Dhan39) in different weed control treatments e.g. two hand weedings at 15 and 40 DAT; Weeding by BRRI Weeder at 20 and 40 DAT; Rifit 500EC @ 1L/ha at 7 DAT; Rifit 500EC @ 1 L/ha at 7 DAT and one hand weeding at 40 DAT; Butachlor 5G @ 2 kg/ha at 7 DAT; Butachlor 5G @ 2 kg/ha at 7 DAT and one hand weeding at 40 DAT along with weed free and unweeded check under both good and poor water management practices. Weed density, weed biomass and weed control efficiency were significantly influenced by different weed control treatments under both water management practices. Other than weed free treatment, Butachlor 5G @ 2 kg/ha applied at 7 DAT along with one hand weeding at 40 DAT showed the best performance under good water management with minimum weed density (16 g/m2) as well as weed biomass (9.27 g/m2) and the highest weed control efficiency (82.57%). Yield and yield components were also significantly influenced by different weed control treatments and water management. The highest grain yield (5.22 t/ha) was obtained under good water management in weed free treatment followed by Butachlor 5G @ 2 kg/ ha and one hand weeding (4.96 t/ha) under same water management. Results revealed that integration of approaches, particularly Butachlor application along with one manual weeding accompanied by proper water management might be the best option to combat weed problems as well as to obtain satisfactory grain yield in transplanted aman rice. Key Words: Transplanted aman rice, water management, weed control treatment and yield. doi:10.3329/bjar.v33i3.1599 Bangladesh J. Agril. Res. 33(3) : 399-408, September 2008

scholarly journals Performance Evaluation of BRRI Power Weeder for Low Land Rice (Oryza sativ L.) Cultivation

2017 ◽  
Vol 15 (1) ◽  
pp. 40-48
Author(s):  
AKM Saiful Islam ◽  
MT Islam ◽  
M Sh. Islam ◽  
AKM Lutfor Rahman ◽  
MA Rahman
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Crop Production ◽  
Block Design ◽  
Rice Variety ◽  
Field Performance ◽  
Field Capacity ◽  
Control Device ◽  
Effective Field ◽  
Hand Weeding

Mechanical intervention in crop production is increasing rapidly in Bangladesh. Researchers are finding ways to manage weeds in rice field using suitable mechanical devices instead of conventional hand weeding. A study was conducted to evaluate the field performance of BRRI (Bangladesh Rice Research Institute) power weeder compared to BRRI weeder and hand weeding in the farmers’ field at Rashidpur in Mithapukur upazila under Rangpur district during boro season of 2014-15. Three treatments: T1 = BRRI weeder (BW), T2 = BRRI power weeder (BPW) and T3 = Hand weeding (HW) were used in the experiment. The experiment was carried out in a randomized complete block design (RCBD) and replicated in four farmers’ plots. Rice variety BRRI dhan28 was selected for the experiment. The effective field capacity of BW and BPW was found to be 0.06 and 0.09 ha hr-1, respectively. The weeding efficiency was the highest in HW (92%), followed by BPW (78%) and BW (73%). It was found that BW damaged the lowest number of plants (9%) compared to BPW (11%) during weeding operation, although the damaged plants recovered after a few days. BW and BPW reduced 74 and 85% of labor requirement in weeding operation compared to HW. The highest weeding cost was involved in HW (Tk. 4287 ha-1) compared to BW (Tk. 1103 ha-1) and BPW (Tk. 950ha-1). Weed control methods exerted insignificant effect on grain yield. BRRI power weeder and BRRI weeder reduced weeding cost, enhanced weed control and improved the labor efficiency without sacrificing grain yield. The highest BCR was obtained in BPW (1.22) followed by BW (1.16) and HW (1.11). BRRI power weeder and BRRI weeder appeared to be economic, easy and also environmentally safe weed control device in low land rice cultivation. The Agriculturists 2017; 15(1) 40-48

scholarly journals Effects of spacings and butachlor levels on weed control, growth and yield of NERICA 1 rice (Oryza sativa L. x Oryza glaberrima L.)

2017 ◽  
Vol 62 (4) ◽  
pp. 361-369
Author(s):  
Hassan Kasim ◽  
Ibrahim Musa ◽  
Mustapha Muhamman
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Weed Control ◽  
Crop Production ◽  
Field Experiments ◽  
Oryza Sativa L ◽  
Growth And Yield ◽  
Oryza Glaberrima ◽  
Control Growth ◽  
Main Plot

Poor agronomic practices coupled with herbicide mismanagement influence crop performance, yield, weed infestation and environmental hazards. Thus, field experiments were carried out to investigate the effect of spacing and reduced levels of butachlor on weed control and yield of NERICA 1 rice (Oryza sativa L. x Oryza glaberrima L). The experiments were conducted in the 2011 rainy season at the Teaching and Research Farm of the Department of Crop Production and Horticulture, Modibbo Adama University of Technology, Yola, and Lake Gerio, Yola in the 2012 dry season. Yola is located between latitude 9o14? N and longitude 12o28? E in the Northern Guinea Savanna ecological zone of Nigeria. Treatments consisted of four spacings (20 cm x 20 cm, etc.) and four butachlor levels (3, 2, 1, and 0 kg ha-1 a.i.). The experiments were laid out in a split-plot design with spacings assigned to the main plot and butachlor levels assigned to the sub-plot and were replicated three times. Data were taken on percentage establishment, number of leaves per plant, general weed cover, panicle length and grain yield per hectare. Data generated were subjected to analysis of variance. Means showing a significant F-test were separated using LSD. Results obtained showed that butachlor at 1 kg ha-1 and 14 cm x 14 cm spacing gave the highest grain yield of 1441 kg ha-1 and maximum weed control. They are, therefore, recommended for adoption by farmers in Yola and similar environments.

scholarly journals Fertilizer and Weed Management Options for Direct Wet Seeded Rice in Dry Season

2016 ◽  
Vol 20 (1) ◽  
pp. 65-75 ◽  
Author(s):  
R Shultana ◽  
JC Biswas ◽  
MAA Mamun ◽  
L Nahar
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Weed Management ◽  
Dry Season ◽  
Control Measures ◽  
Rice Seed ◽  
Management Options ◽  
Weed Density ◽  
Direct Seeded ◽  
Hand Weeding

Direct seeding of rice is an emerging technology. However, direct seeded rice culture in the main field is hindered by enormous weed infestation and it lacks judicious fertilizer management. So, experiments were conducted during dry seasons of 2010 and 2012 with three fertilizer packages and four weed control measures. Rice seed was sown in the field using drum seeder in wet soil. The results revealed that weed density and weed biomass were strongly influenced by weed control methods and fertilizer rates. Weed density was higher in unweeded plots with 140:36:43 kg NPK ha-1. Among the species Echinichloa crusgalli (L.) P. Beauv. was the dominant species. Three hand weeding controlled maximum weeds. Uses of herbicide for controlling weeds were above 80 and 70% effective. Strong negative correlation was recorded between grain yield and weed density. Herbicide with one hand weeding and BRRI weeder in combination with 160:46:53 kg NPK ha-1 produced about 81- 104% higher grain yield than no weeding. Weed free plot produced 112% higher yield with 160:46:53 kg NPK ha-1. Besides, herbicide with one hand weeding and BRRI weeder treated plot produced similar yield irrespective of fertilizer doses. The strong positive and linear relationship was found in case of yield and yield components. Herbicide with one hand weeding and 120:26:33 kg NPK ha-1 gave higher net return (1145 $/ha). The benefit cost ratio was also higher in herbicide based weed management with reduced rate of fertilizer. Direct seeded culture using herbicide with one hand weeding and 120:26:33 kg NPK ha-1 could be an option for reducing production cost in dry season along with satisfactory grain yield.Bangladesh Rice j. 2016, 20(1): 65-75

Potential of microwave soil heating for weed management and yield improvement in rice cropping

2019 ◽  
Vol 70 (3) ◽  
pp. 211 ◽  
Author(s):  
Muhammad Jamal Khan ◽  
Graham Brodie ◽  
Dorin Gupta
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Untreated Control ◽  
Crop Production ◽  
Oryza Sativa L ◽  
Block Design ◽  
Soil Treatment ◽  
Soil Horizon ◽  
Irrigation Water Use ◽  
Significant Difference

Herbicide-resistant weeds have prompted the development of non-chemical weed-control techniques for sustainable crop production. We examined the potential of pre-emergence microwave (MW) soil treatment to suppress weeds and enhance grain yield in rice (Oryza sativa L.) cropping in two agro-ecological zones of Australia. An experimental MW weed killer, which has four, independently controlled, 2-kW MW generators operating at 2.45 GHz, was used to treat the soil before cropping under field conditions. A once-off MW soil treatment (duration 60 s) and an untreated control were assigned in a randomised complete block design with five replicates at two study locations: Dookie (Victoria) and Jerilderie (New South Wales). Simpson’s numerical surface integral approximation estimated the applied energy density of ~500 J cm–2. This energy increased the soil’s temperature up to 70–75°C in top soil horizon (0–6 cm) as depicted by infrared thermal imaging. No statistically significant difference was detected for weed control between MW and untreated control plots at either study location. At Dookie, grain yield did not significantly increase in response to MW soil treatment, whereas at Jerilderie, grain yield was 20% higher (P < 0.05) with MW soil treatment than in control plots. At Jerilderie, the irrigation water use efficiency (t ML–1) was 21% higher in MW plots than control plots. In summary, MW exposure of 60 s appeared to be an insufficient heating duration for seedbank depletion. This suggests further treatment modification followed by rigorous testing under different soils conditions using the MW prototype.

scholarly journals Performance of Pre- and Post-emergence herbicides in strip tillage Non-puddled transplanted Aman rice

2018 ◽  
Vol 42 (4) ◽  
pp. 631-646
Author(s):  
T Zahan ◽  
MM Rahman ◽  
A Hashem ◽  
RW Bell ◽  
M Begum
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Growth And Yield ◽  
Economic Return ◽  
Weed Density ◽  
Effective Combination ◽  
Wide Range ◽  
Herbicide Treatments ◽  
Strip Tillage ◽  
Density And Biomass

A study was conducted on transplanted aman rice (cv. BINA dhan-7) in strip-tilled non-puddled field with some commonly used rice herbicides (pre-emergence: pyrazosulfuron-ethyl and butachlor, early post-emergence: orthosulfamuron and late post-emergence: acetochlor + bensulfuron methyl, butachlor + propanil and 2,4-D amine) applied singly or in sequences during 2013 and 2014 at field laboratory, Bangladesh Agricultural University, Mymensingh to evaluate the effect of those herbicides on weeds as well as growth and yield of aman rice in strip-tilled non-puddled condition. The study showed that herbicides significantly reduced weed density by 75-94% in 2013 and 46-98% in 2014 compared to the weedy check. Sole application of pre- or early post-emergence herbicide provided less weed control than sequential application of pre-, early post- and late post-emergence herbicides or application of pre- and late post-emergence herbicides. A wide range of sequential application of herbicide treatments has identified in the study that provided control on weed density and biomass by 49-98% and 56-95%, respectively. Application of pyrazosulfuron-ethyl followed by orthosulfamuron and butachlor + propanil was the most effective combination in this new rice establishment condition that controlled all types of weeds successfully and provided maximum grain yield (5.42 t ha-1 in 2013 and 6.18 t ha-1 in 2014) with highest economic return (Tk. 55930 ha-1 in 2013 and Tk. 69057 ha-1 in 2014). The study suggests economically beneficial some combinations of currently used herbicides for strip-tlled non-puddled transplanted aman rice that may help farmers to choose and rotate in the same land yearwise for obtaining optimum yield.Bangladesh J. Agril. Res. 42(4): 631-646, December 2017

COMPARATIVE EFFICACY OF HERBICIDES IN WEED CONTROL AND ENHANCEMENT OF PRODUCTIVITY AND PROFITABILITY OF RICE

2017 ◽  
Vol 54 (3) ◽  
pp. 363-381 ◽  
Author(s):  
TEEKAM SINGH ◽  
BHAWANI SHANKAR SATAPATHY ◽  
PRIYANKA GAUTAM ◽  
BANWARI LAL ◽  
UPENDRA KUMAR ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Grain Yield ◽  
Weed Control ◽  
Microbial Biomass Carbon ◽  
Biomass Carbon ◽  
Herbicide Application ◽  
Weed Density ◽  
Metsulfuron Methyl ◽  
Hand Weeding ◽  
Boro Rice

SUMMARYWeed management is the major challenge to the success of boro rice (rice grown during Dec–Jan to May–Jun, also known as summer rice) in Southern Asia. Herbicide seems to be a cost effective and strategic tool from an agronomic view point to control weeds; however, herbicide application can potentially interfere with soil enzyme activity and microbial biomass carbon (MBC). A field study was conducted in 2012/13 and 2013/14 to evaluate the performance of sole and combined application of different pre-emergence herbicides in comparison to manual weeding in boro rice. Lowest weed density, biomass and highest weed control efficiency (~83%) were recorded with the pyrazosulfuron ethyl, causing higher grain yield (6.7 Mg ha−1 in 2012/13 and 4.5 Mg ha−1 in 2013/14) than treatments with chlorimuron + metsulfuron-methyl, bensulfuron methyl + pretilachlor, butachlor fb 2,4D, butachlor and cono-weeder. Among, the herbicidal treatments butachlor caused lower grain yield and higher weed density and biomass when compared to the others. Although grain yield was highest in weed-free treatments but net returns and (B:C) benefit cost ratio was highest for pyrazosulfuron ethyl due to high cost of hand weeding. After 15 days of herbicide application, lowest microbial biomass carbon was recorded with bensulfuron methyl + pretilachlor, whereas lower values of dehydrogenase and fluorescein diacetate activities were observed with the application of chlorimuron + metsulfuron-methyl at 15 days after herbicide application. Our results suggest that pyrazosulfuron ethyl is one broad-spectrum and economically effective herbicide for controlling weeds as an alternative to labour consuming hand weeding in boro rice cultivation.

scholarly journals Conservation agriculture options for a Rice-Maize cropping systems in Bangladesh

2015 ◽  
Vol 18 (1-2) ◽  
pp. 44-53 ◽  
Author(s):  
AKM Saiful Islam ◽  
MM Hossain ◽  
MA Saleque
Keyword(s):  
Oryza Sativa L ◽  
Cropping Systems ◽  
Conservation Agriculture ◽  
Conventional Tillage ◽  
Gross Margin ◽  
Minimum Tillage ◽  
Land Preparation ◽  
Single Pass ◽  
Strip Tillage ◽  
Residue Retention

Over the last two decades, Rice (Oryza sativa L.)-Maize (Zea mays L.) cropping systems have become one of the most dominant cropping systems in Bangladesh. This has coincided with the expansion in use of two-wheel tractors, which has facilitated options for minimum tillage. A three-year trial examined the prospects of conservation agriculture practices for Rice-Maize cropping in Bangladesh, with respect to minimum tillage and residue retention. Main plot tillage treatments of conventional full tillage, single pass wet tillage in rice (rotated with zero tillage in maize), bed planting and strip tillage were combined with residue retention treatments of 0, 50 and 100% in sub-plots. Compared to conventional tillage, minimum tillage saved 60-66% of fuel and 70-74% of labour required for land preparation. Although minimum tillage reduced the land preparation cost significantly through saving fuel and labour, weed infestation was higher compared to conventional tillage, which influenced the cost of production. Rice seedlings transplanted under unpuddled strip tillage required more time than in conventional or single pass wet tillage due to poor visibility of strips and the hard surface of untilled soil. Bed planting incurred the lowest production cost. Tillage methods and residue treatment produced no significant grain yield differences. Rice grown with single pass wet tillage and maize grown with strip tillage gave the highest gross margin over time. Despite lack of treatment effects on yields, the results suggest that profitability of Rice-Maize cropping could be increased with minimum tillage, provided there is adequate control of weeds by herbicides.Bangladesh Rice j. 2014, 18(1&2): 44-53

scholarly journals Effect of weed control on the performance of transplant BRRI Dhan 32

2018 ◽  
Vol 28 (4) ◽  
pp. 271-278
Author(s):  
MS Islam ◽  
H Akter ◽  
S Aktar ◽  
J Miah ◽  
SSF Hossain
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Weed Control ◽  
Dry Weight ◽  
Net Income ◽  
Weed Species ◽  
Weed Density ◽  
Panicum Repens ◽  
Hand Weeding ◽  
Higher Doses

A field experiment was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July to December 2003 to find out the effect of weed control on the performance of transplant Aman rice cv. BRRI Dhan 32. Weed control treatments  Included in the study were no weeding, one hand weeding, two hand weeding, one hand weeding+one weeding with Japanese rice weeder, Rift@ 0.5, 0.75, 1.0,  and 1.25 L ha-1 and Rostar@ 1.0, 1.5, 2.0, and 2.5 L ha-1. Important weed species found to infest the crop were Angta (Panicum repens), Acidgras (Ammania bacifera L.) Nackphulee (Cyperous difformis), Khudeshama (Echinochloa crusgalli) was the least important weed species. Higher doses of Rift 1.25L ha-1 and Ronstar 2.5 L ha-1 showed the best performance in reducing weed density and weed dry weight. The highest grain yield (5.0 4ton ha-1) was obtained from Ronstar 2.0 L ha-1 which was identical with the second highest grain yield (4.93 t ha-1) obtained from Rift 1.0 L ha-1. The highest net income of tk. 38915 ha-1 was obtained from Ronstar 2.0 L ha-1 and the next highest from Rift 1.0L ha-1.Progressive Agriculture 28 (4): 271-278, 2017

Sign in / Sign up

Export Citation Format

Share Document