Md. Moshiur Rahman

• Doctor of Philosophy
• Professor at Bangladesh Agricultural University

Reducing herbicide use in agriculture is key for sustainability, addressing costs, environmental issues, and resistance problems. Using non-chemical methods like allelopathy in weed management offers a viable alternative. In this phenomenon, a field study was carried out at the Agronomy Field Laboratory (AFL) of Bangladesh Agricultural University (...

An experiment was conducted to assess the effects of NPK fertilizers on juice and goor (brown sugar) yield and juice quality of date palm (Phoenix sylvestris Roxb.). The trial examined N, P, and K fertilizers consisting of each of three levels Firstly, in (2013-2014) three levels of N viz. 0, 600, 1200 g/plant, and three levels of P viz. 0, 100, 20...

Proper nitrogen (N) management is vital for gaining potential yield benefits of a variety. Adjusting transplanting time enables the plant taking benefit from natural conditions favorable for its growth. In light of these, an investigation was carried out in the Boro season at the Agronomy Field Laboratory, Bangladesh Agricultural University from No...

Carbon (C) sequestration in soil plays a crucial role in increasing soil quality through recommended management practices including applying organic amendments, following cropping patterns, fallow periods etc. This study aimed to assess the influence of rice-based cropping patterns on soil C and nutrient status in surface (0-15 cm) and sub-surface...

Zinc (Zn) and boron (B) deficiency are widespread nutritional disorders in crop plants, including mustard. However, Zn-B interaction on the performance of mustard crops is not well documented. A field experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh, during November 2021 to February 2022 to...

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to November 2015 to find out the effect of planting and nutrient management on the growth, yield and protein content of aromatic fine rice (cv. Binadhan-13). The experimental treatments comprised six planting arrangement viz. 25 cm...

Avoiding the negative effect of herbicide residues in soils on the growth of subsequent crops is especially challenging in intensive cropping sequences involving numerous crop species and short fallow periods between crops. For intensive rice cropping patterns in Bangladeshthe residual effect of six herbicides: glyphosate, pendimethalin, ethoxysulf...

When farmers first shift from conventional tillage (CT) to conservation agriculture (CA) practices, the control of weeds may be more difficult, due to the absence of tillage. However, continuous CA, over several years, may alter the weed seedbank. The nature of the weed seedbank changes over time, in intensively cropped rice-based rotations that ar...

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during June to November 2016 in order to find out the effect of variety and planting arrangement on weed control and yield performance of transplanted Aman rice. The experiment consisted of four varieties viz., Binadhan-7, Binadhan-12, Binad...

South Asian farmers are turning to mechanized planting, crop stubble retention, and herbicide application to address the current labor shortage situation. The purpose of this on-farm study was to compare conventional plow tillage combined with manual weeding to single-pass tillage combined with herbicides on the overall weed control efficacy and se...

Cropping under conservation agriculture (CA) has become increasingly attractive among farmers in recent years. However, weed control may be more difficult during the transition to CA from conventional establishment methods due to the reduction in tillage intensity. Conversely, CA changes to weed dynamics can alter the weed seed bank in the longer r...

Changing tillage from traditional to minimum (MT) can lead to shifts in weed flora (Ball and Miller, 1993). MT can become overly dependent upon on the use of herbicides, but other cultural weed control options may help in reducing weed infestations. There is limited knowledge about effective weed control under MT in intensive rice based cropping sy...

An on-farm experiment was carried out in Swalpobarian, Khagdahar, Mymensingh, during February to June 2014 to study the effect of crop establishment method and weed management practices on the performance of Boro rice (cv. BRRI dhan28). Three plant establishment methods viz. conventional puddled, unpuddled-one tillage in dry condition and unpuddled...

Smallholder agriculture of the Asian continent faces a significant challenge of declining soil productivity and an acute shortage of ag-ricultural labor. Reduced tillage and crop residue mulch application is an integrated approach to preserving soil health and addressing the labor crisis to maintain farm sustainability. We undertook this study to e...

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...

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...

An experiment was conducted at Khitrokashipur, Durgapur, Rajshahi during March to June 2018 to study the effect of organic amendment on soil quality and yield performance of dry direct seeded boro rice var. BRRI dhan28. The treatments were Trichocompost (TC), Vermicompost (VC), mustard oil cake (MOC), Trichocompost + mustard oil cake (TC+MOC), Verm...

When farmers first shift from conventional tillage (CT) to conservation agriculture (CA) practice the control of weeds may be more difficult due to the absence of tillage. However, in the longer term (3-5 years), CA changes to weed dynamics may alter the weed seedbank. The nature of weed seedbank changes over time in intensively cropped rice-based...

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 m...

The study was initiated with the aims to determine the variation in growth and yield of winter wheat varieties to pendimethalin at different application rates and to identify the wheat varieties tolerant or susceptible to pendimethalin. A two-year study was conducted on sandy clay loam tex-tured soil containing low organic matter content during the...

On-farm research was conducted at Gouripur sub-district under Mymensingh district of Bangladesh during the boro (mid November-June) season in 2013-14 and 2014-15 to evaluate the performance of non-puddled rice cultivation with and without crop residue retention. The rice var. BRRI dhan28 was transplanted by two tillage practices viz., puddled conve...

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during June to December 2015 with a view to finding out the effect of nitrogen levels on the yield performance of short duration inbred and hybrid transplant rainy season rice varieties. Four short duration rice varieties (three inbred viz....

On-farm research was conducted at Gouripur sub-district under Mymensingh district of Bangladesh during boro (mid November-June) season in 2013-14 and 2014-15 to evaluate the performance of unpadded rice cultivation with crop residue retention. The rice var. BRRI dhan28 was transplanted by two tillage practices viz., puddled conventional tillage (CT...

Strip planting is a promising establishment method for wheat (Triticum aestivum L.); however, wheat yields can sharply decline if weeds in the fields are not effectively managed. Therefore, to obtain an adequate and economically-viable weed control strategy for strip-planted wheat, we conducted a study, over two years (2013-14 and 2014-15) with com...

Weed is the major constraint to rice production and the integrated weed management reduces the dependency on herbicidal and mechanical weed control. Weed suppression in transplanted rice can be augmented by adoption of weed competitive varieties and adjusting the planting spacing. The present study was conducted to find out the effect of variety an...

Dry direct seeding is an alternative rice production method that reduces 50-60% irrigation water required compared to the conventional method. The present study was undertaken with a view to optimize irrigation requirement for dry direct seeded rice. The experiment involved seven water management levels and two rice varieties in a split-plot design...

Timely sowing/planting of rabi crops in T. aman rice – Rabi crop – Boro rice pattern is very important. Short duration rice varieties are cultivated in aman season to facilitate timely sowing of rabi crops. Most of the short duration aman rice varieties are sensitive to early transplanting and thus, early vacating of land for subsequent rabi crops...

Smallholder farms in South Asia are rapidly adopting herbicides for labour saving weed control in crops but effective weed management technologies have not been well developed. Weed management technologies are especially in demand for the emerging Conservation Agriculture practices involving minimum soil disturbance planting and retention of crop r...

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from February to June 2018 with a view to study the effect of mulch and organic amendments on growth and yield performance of BRRI dhan58 under dry direct seeded boro rice production system. The experiment included two set...

Background: Bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae is a major disease and a threat to rice production worldwide. Several biological, chemical and genetic control approaches has resulted the improved management of BLB of rice. Recently, biological control using plant growth-promoting bacteria is emerging as potential alt...

Puddled transplanting is the major system of rice cultivation in many parts of the world. Transplanting system provides a high and stable yield. It is labour intensive and requires huge amount of irrigation water (1500 -2000mm). The increasing scarcity of irrigation water and labour acted as a major driver to the adoption of the wet direct seeding...

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from February to June 2018 with a view to study the effect of mulch and organic amendments on growth and yield performance of BRRI dhan58 under dry direct seeded boro rice production system. The experiment included two set...

A study was carried out in sandy clay loam textured soil of Mymensingh, Bangladesh to evaluate weed control efficiency of pre-emergence herbicide pyrazosulfuron-ethyl either alone or in sequential application with post-emergence herbicide in transplanted rainy season rice under non-puddled strip-tilled (NPST) field condition and also to examine the...

The study was initiated with the aims to determine the variation in growth and yield of winter wheat varieties to pendimethalin at different application rates and to identify the wheat varieties tolerant or susceptible to pendimethalin. A two-year study was conducted on sandy clay loam textured soil containing low organic matter content during the...

We review the recent development of Conservation Agriculture (CA) for rice-based smallholder farms in the Eastern Gangetic Plain (EGP) and the underpinning research on agronomy, weed control, soil properties and greenhouse gas emissions being tested to accelerate its adoption in Bangladesh. The studies are based mostly on minimum soil disturbance p...

Dry direct seeded boro rice, grown in unpuddled and unsaturated/aerobic soil condition, requires only 50-60% water as compared to traditional flooded transplanted rice, and therefore it could be adopted as a water saving rice cultivation system in boro season of Bangladesh. However, high weed infestation is one of the major constraints in dry direc...

Despite over-dependence on the crop based farming economy, homestead forestry practices have immense potential to ensure sustainable livelihoods in the rural and peri-urban areas of Bangladesh. A clear understanding of the physical characteristics and economic role of both sectors in rural livelihoods is vital for sustainable resource management. T...

Residual effect of eight herbicides (pendimethalin, pretilachlor, triasulfuron, ethoxysulfuron, pyrazosulfuron-ethyl, carfentrazone-ethyl, 2,4-D amine and carfentrazone-ethyl + isoproturon) applied in strip–tilled wheat(Triticum aestivumL.) on the succeeding crop i.e mungbean (Vigna radiate L.), jute (Corchorus capsularis L.) and sunflower (Heliant...

This is the first version of the CA Manual. It is designed to describe the current state of knowledge about the practices that represent CA systems for smallholders in rice-based cropping in Bangladesh

p>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 s...

Sensitivity of crop cultivars may vary to commonly used herbicides resulting in potential yield loss and reduce farm profit. Transplanting of rice seedlings in strip-tilled non-puddled field is a new practice for which herbicide tolerant varieties need to select. Therefore, a study was executed at the Agronomy Field Laboratory of Bangladesh Agricul...

In orthogonal frequency division multiplexing (OFDM) system, high value of peak-to-average power ratio (PAPR) is an operational problem that may cause non-linear distortion resulting in high bit error rate. Selected mapping (SLM) is a well known technique that shows good PAPR reduction capability but inflicts added computational overhead. In this p...

p>An experiment was conducted at the Bangladesh Jute Research Institute (BJRI), Regional Station, Kishoreganj during July to December of 2010 and 2011 to investigate the effect of spacing and de-topping on yield and quality of kenaf seeds cv. HC-95 grown under direct seeding method. Three plants spacings (40 cm × 15 cm, 30 cm × 15 cm and 20 cm × 15...

Introduction: Conservation agriculture (CA) has been identified as an effective tool for sustainably increasing the crop yields but weed control is perceived as one of the most challenging issues (Pittelkow et al., 2015). Due to the reduction in tillage operations, weed seed bank composition and dynamics in CA will change compared to conventional t...

Introduction: Conservation agriculture (CA) has been identified as an effective tool for sustainably increasing the crop yields but weed control is perceived as one of the most challenging issues (Pittelkow et al., 2015). Due to the reduction in tillage operations, weed seed bank composition and dynamics in CA will change compared to conventional t...

Introduction: Development of efficient farm machinery and availability of effective herbicides have resulted the higher profitability in conservation agriculture (CA) that in turn has been identified as an effective tool for sustainability of agriculture (Farooq et al., 2011). But weed species shifts and losses in crop yield caused from increased w...

Introduction: In Asia, rice (Oryza sativa L.) is established generally by seedling transplanting in puddled soil. Generally, lands are prepared by 3-4 ploughing and cross ploughing operations followed by levelling in standing water. This traditional method is costly in terms of labour, fuel, time and irrigation water, and is detrimental to soil hea...

Introduction: Farmers' in the tropics and subtropics of Asia traditionally transplant rice seedlings in puddled soil (Singh et al., 2014) for easy crop establishment and weed control. This traditional puddling method is labour and capital intensive and destructive to soil health and economic environment in various ways (Islam et al., 2014). Adoptio...

Introduction: One disadvantage of conservation tillage is increase in weed pressure (Hossain et al, 2014). Weed control in conservation tillage is dependent on the use of herbicides, but other cultural options may help in reducing weed infestations. There is limited knowledge about effective weed control under conservation tillage in intensive ric...

Introduction In Asia, rice (Oryza sativa L.) is established generally by seedling transplanting in puddled soil. Generally, lands are prepared by 3-4 ploughing and cross ploughing operations followed by levelling in standing water. This traditional method is costly in terms of labour, fuel, time and irrigation water, and is detrimental to soil heal...

Strip tillage and residue retention reduced weed biomass and increased grain yield and BCR. Application of Roundup followed by one pre-emergence and one post-emergence herbicide with residues reduced weed biomass compared to Roundup alone and increase rice yield and BCR in strip tillage. Farmers are likely to increase productivity and profit from s...

In non-puddled system, spraying a pre-emergence herbicide followed by a post-emergence with the 50% retention of previous crop mulch could control weeds more effectively over manual weeding and attributes the highest benefits.

p>Mungbean can successfully be grown under strip tillage system if appropriate seeding rate can determine and adjust with machine. Due to high weed pressure in strip tillage system, selection of such mungbean varieties that have some potentialities to suppress weeds need to find out and moreover, determining optimum seed rate for different varietie...

p>An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during November 2014 to April 2015 to investigate the effect of planting spacing and nitrogen levels on yield attributes and yield of maize cv . Khaibhutta. The experiment comprised three nitrogen levels viz. 50, 100 and 150 kg N ha<sup>-1...

High Peak to Average Power Ratio (PAPR) is one of the major drawbacks for Orthogonal Frequency Division Multiplexing (OFDM) transmitted signal. Among the PAPR reduction techniques, Selected Mapping (SLM) technique is one of the promising one but results in added computational complexity. In this paper, we applied Greatest Common Divisor (GCD) seque...

In Orthogonal Frequency Division Multiplexing (OFDM) system, high value of Peak-to-Average Power Ratio (PAPR) is an operational problem that may cause non-linear distortion resulting in high Bit Error Rate (BER). Selected Mapping (SLM) is a well known PAPR reduction technique that shows good performance but inflicts added computational overhead. In...

An on-farm research was conducted at Gouripur upazila under Mymensingh district of Bangladesh during aman and boro season in 2013-14 to evaluate the performance of unpuddled rice cultivation. The rice var. Hybrid Krishan2 in aman and BRRI dhan28 in boro season were transplanted by two tillage practices viz., conventional tillage (CT) and strip till...

Weed is considered as a major barrier in wheat cultivation under strip tillage system and labour crisis issue makes manual weed control more difficult in this minimum tillage system under Bangladesh condition. Therefore, a study was conducted at Mymensingh, Bangladesh from November 2014- March 2015 to examine the weed control efficacy of herbicides...

p>A study was conducted at Bangladesh Agricultural University, Mymensingh during March-June, 2013 to evaluate the performance of mungbean varieties and to determine the optimum seed rate under strip tillage system. Three mungbean varieties (BARI Mung-6, Binamung-5 and Binamung-8) were tested against five seeding rates (20, 25, 30, 35 and 40 kg ha<s...

In direct seeded rice (DSR) cultivation systems, rice and weed seedlings emerge simultaneously and there is no standing water to suppress weed emergence and growth at crop emergence. For this reason, weeds are considered one of the major biological constraints in DSR and cause a substantial rice yield loss. Weeds are mainly controlled using herbici...

An experiment was conducted at the Bangladesh Jute Research Institute (BJRI), Regional Station, Kishoreganj, Bangladesh during July to December 2010 and 2011 to study the effect of spacing and time of de-topping on yield and quality of kenaf seed cv. HC-95 grown under transplanting method. The experiment comprised three plant spacing (viz., 40 cm ×...

High Peak-to-Average Power Ratio (PAPR) is one of the main drawbacks that may limit practical applications of Orthogonal Frequency Division Multiplexing (OFDM) system. Based on the well known Selective Mapping (SLM) method of PAPR reduction, in this paper, we propose a new phase sequence generation technique from Condex matrix that can achieve bett...

Reduction of high Peak-to-Average Power Ratio (PAPR) is a very important issue in Orthogonal Frequency Division Multiplexing (OFDM) system. In this contribution, we propose a new phase sequence that can be used in Selective Mapping (SLM) technique; a well known PAPR reduction method. Generated from Greatest Common Divisor (GCD) matrix, we show that...

Conservation agriculture (CA) is a resource saving, environment friendly crop production practice having minimum disturbance of soil, permanent soil cover and crop rotation. CA is becoming increasingly important in overcoming the problems of declining agricultural productivity both in developing and developed countries. This practice is a powerful...

Losses in crop yield as a result of increased weed pressure could be minimized under Conservation Agriculture practice

One disadvantage of conservation tillage is increase in weed pressure (Hossain et al, 2014). Weed control in conservation tillage is dependent on the use of herbicides, but other cultural options may help in reducing weed infestations. There is limited knowledge about effective weed control under conservation tillage in intensive rice based croppin...

The experiment was conducted at the Laboratory of Jute Research Regional Station (JRRS), Bangladesh Jute Research Institute (BJRI), Kishoreganj, Bangladesh during 2011 and 2012 to assess of kenaf seed quality affected by seed moisture content and storage container. The study comprised four Seed Moisture Content (SMC) viz. 8%, 10%, 12% and 14% and f...

Transplanting of rice in unpuddled soil following minimum tillage is a new technology for which effective weed control strategies have yet to be developed. The decreased level of weed control managed by tillage operation and changes in the efficacy of herbicides commonly used in puddle soils are key questions for minimum tillage unpuddled transplan...

Conservation tillage technology based on mulch retention are being developed in Bangladesh but the optimum weed control for crops in the cropping sequence is still not well defined. The present experiment aimed to determine the effect of mulch retention, herbicides and hand weeding on weed control in unpuddled rice transplanted after mustard in mus...

p>The experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh to study the effects of nitrogen and phosphorus on the performance of soybean. Three levels of nitrogen (0, 25 and 40 kg N ha^-1) and four levels of phosphorus (0, 18, 36 and 54 kg P ha^-1) were considered as treatme...

The experiment was conducted at the research field of Regional Agricultural Research Station, Jessore during two consecutive rabi seasons of 2008-2009 and 2009-2010 to find out the effect of hydropriming on the performance of maize seeds under variable soil moisture regimes. The treatments of the experiment were two priming methods viz., i) Hydropr...

An on-farm research was conducted at Gouripur upazila under Mymensingh district of Bangladesh during aman and boro season in 2013-14 to evaluate the performance of unpuddled rice cultivation. The rice var. Hybrid Krishan2 in aman and BRRI dhan28 in boro season were transplanted by two tillage practices viz., conventional tillage (CT) and strip till...

Weed management is critical to obtaining profitable yields in minimum tillage system. Innovative weed control strategies including chemical methods will continue to be an essential component in the development of sustainable conservation agriculture (CA) practices (Andrew and Kelton, 2011). Weed management in minimum tillage relied on extensive use...

At low crop residues, weed density and weed dry matter were high but crop yield was low. In contrast, weed density and weed dry matter was low and crop yield was high at high crop residue. These results suggest that, increased residue might have reduced weed emergence and increased crop yield by 52%.