scholarly journals The Aggression of Human Activities on Chalanbeel a Threat on Wetland Environment: Study on Natore - Rajshahi Region of Bangladesh

2013 ◽  
Vol 8 (1-2) ◽  
pp. 151-159
Author(s):  
MM Rahman ◽  
MR Rahman ◽  
M Asaduzzaman
Keyword(s):  
Crop Production ◽  
Biological Diversity ◽  
Public Awareness ◽  
Road Construction ◽  
Northern Region ◽  
Rice Production ◽  
Cropping Pattern ◽  
Management Options ◽  
Large Reservoir ◽  
Boro Rice

The Chalanbeel is the main wetland of Northwestern region of Bangladesh. It is not only the source of water but also one of the main sources of occupation for thousands of people. It supplies fresh water as well as abundant of aquatic resources. This wetland is the large source of native fishes. It plays a vital role to keep the environment of the surrounding vast region balanced. It makes the land fertile, alluvial and alive for whole the year round. It is also a large reservoir of biological diversity of this region. Recently the aggression of man on this great beel increases in such a rate that the overall environment of this wetland fall in a crisis. It is going to loss its tradition and pride of her resources. Specially the aggression of settlement and road construction along the wetland hampered the natural characteristics. Reach it and an investigation was conducted to study the overall condition of the wetland. The observation indicates horror news for both the environment and its inhabitant of the surrounding area. Soils under lower Natore- Rajshahi region of Bangladesh with a view to evaluate the agricultural potentiality, environmental condition and their management options. The studied wetlands were nutritionally very productive. It is believed that the soils of this area became enriched by siltation during flooding. Soil textural condition is very much appropriate for rice production in these basin floodplains. The content of nitrogen and boron is low. Probably, the denitrification process leads to the loss of nitrogen in these soils; other nutrients seem to be in balanced condition for the successful growth of deep water aman and boro rice. High yielding boro rice got preference over broadcast aman and aous as major rice crops in the area. Availability of irrigation water in the dry periods and deep inundation level in the monsoon may be the main cause of such cropping pattern. Recently a problem is found that is the gradual decreasing of crop production in these areas. Both soil fertility and water table deterioration is noticed as the main causes of this alarming news for North Bengal. As this area is consider as the rice production zone of Northern region of Bangladesh. Over pumping of water during dry season is also a cause to deteriorate the environmental balanced of this wetland. For the betterment of grater environment of this area it is essential to take necessary step to stop all kind of human aggression on wetland. Public awareness should increase about the matter. DOI: http://dx.doi.org/10.3329/jsf.v8i1-2.14638 J. Sci. Foundation, 8(1&2): 151-159, June-December 2010

scholarly journals The Agricultural Potentiality Of Some Wetland Soils Under Sylhet Basin Of Bangladesh

1970 ◽  
Vol 21 (1) ◽  
pp. 39-46 ◽  
Author(s):  
MJ Uddin ◽  
ASM Mohiuddin ◽  
ATMM Kamal ◽  
M Anwat Hossain
Keyword(s):  
Deep Water ◽  
Environmental Conditions ◽  
Irrigation Water ◽  
Nutrient Management ◽  
Ph Value ◽  
Rice Production ◽  
Wetland Soils ◽  
Cropping Pattern ◽  
Management Options ◽  
Denitrification Process

An investigation was conducted to study some representative wetland soils under Sylhet basin of Bangladesh with a view to evaluating the agricultural potentiality and its management options. The soils are nutritionally very productive. Soil textural and other environmental conditions are more appropriate for rice production. The contents of nitrogen and boron is low. Probably, the denitrification process leads to the loss of nitrogen in this basin soils. Other nutrients seem to be at a balanced condition for the successful growth of deep water rice. Boro and deep water T. Aman were introduced in the study area in recent times. Availability of irrigation water in the dry periods and shallow inundation level in the monsoon may be the main cause of such cropping pattern. Due to the changes in landuse, demand for nitrogen and phophorus fertilizer have increased. pH value stands near neutral which indicates the agricultural viability of the soils. The present investigations ascertained that the study area including the wetland of Bangladesh can be economically exploited through appropriate nutrient management without any extra agro?chemical use. DOI: http://dx.doi.org/10.3329/dujbs.v21i1.9743 DUJBS 2012 21(1): 39-46

scholarly journals Relationship between Boro Rice Production and MODIS Derived NDVI for Rice Production Forecasting: A Case Study on Bangladesh

2020 ◽  
Vol 8 (1) ◽  
pp. 33-40
Author(s):  
BM Refat Faisal ◽  
Hafizur Rahman ◽  
Sukumar Dutta ◽  
Nasrin Sultana ◽  
Md Abu Taleb Pramanik
Keyword(s):  
Crop Production ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Linear Regression Analysis ◽  
Rice Production ◽  
Regression Equation ◽  
Regression Equations ◽  
Production Forecasting ◽  
Terra Modis ◽  
Boro Rice

The present investigation illustrates an inclusive approach to extract remotely sensed Normalized Difference Vegetation Index (NDVI) from Moderate Resolution Imaging Spectroradiometer (MODIS) (AQUA/TERRA) imageries to find out a relationship with Boro rice production for forecasting crop production in the context of Bangladesh. This study utilizes AQUA/TERRA MODIS reflectance data (250 m resolution) for the month of March (Peak-greenness period) to calculate the average NDVI values by following MODIS based algorithm at district level during 2011-2016. The linear regression analysis of calculated average NDVI and BBS estimated Boro rice production statistics reveals a significant positive relationship due to maximize photosynthetic activities. Among the regression equations from (2011-2016), the highest regression coefficients R2=0.87 and R2=0.85 for AQUA and TERRA MODIS data have been found respectively in 2015. Therefore this regression equation can be used for future estimation of Boro rice production at country scale. However, further testing and simulation of this regression model is required to generate Boro rice production forecasting dataset on timely basis. Hence this study summarizes that, NDVI based regression equation may be an effective process to forecast the Boro rice production which can play an important role in decision-making process relevant to the food security issues of Bangladesh. The Dhaka University Journal of Earth and Environmental Sciences, Vol. 8(1), 2019, P 33-40

scholarly journals Climate Variability Since 1970 and Farmers’ Observations in Northern Ghana

2016 ◽  
Vol 5 (2) ◽  
pp. 41 ◽  
Author(s):  
Emmanuel Nyadzi
Keyword(s):  
Climate Change ◽  
Climate Variability ◽  
Water Conservation ◽  
Crop Production ◽  
Meteorological Data ◽  
Northern Region ◽  
Northern Ghana ◽  
Climate Variability And Change ◽  
Urban Centers ◽  
Access To Credit

<p>The study examines how farmers’ observations of climate variability and change correspond with 42 years (1970-2011) meteorological data of temperature and rainfall. It shows how farmers in the Northern Region of Ghana adjust to the changing climate and explore the various obstacles that hinder the implementation of their adaptation strategies. With the help of an extension officer, 200 farmers from 20 communities were randomly selected based on their farming records. Temperatures over the last four decades (1970-2009) increased at a rate of 0.04 (± 0.41) ˚C and 0.3(± 0.13)˚C from 2010-2011 which is consistent to the farmers (82.5%) observations. Rainfall within the districts are characterised by inter-annual and monthly variability. It experienced an increased rate of 0.66 (± 8.30) mm from 1970-2009, which was inconsistent with the farmers (81.5%) observation. It however decreased from 2010-2011 at a huge rate of -22.49 (±15.90) mm which probably was the reason majority of the respondents claim rainfall was decreasing. Only 64.5% of the respondents had adjusted their farming activities because of climate variability and change. They apply fertilizers and pesticides, practice soil and water conservation, and irrigation for communities close to dams. Respondents desire to continue their current adaptation methods but may in the future consider changing crop variety, water-harvesting techniques, change crop production to livestock keeping, and possibly migrate to urban centers. Lack of climate change education, low access to credit and agricultural inputs are some militating factors crippling the farmers’ effort to adapt to climate change.</p>

How Profitable and Energy-Efficient Is Nepal’s Crop Production? A Case Study of Spring Rice Production in Jhapa District

2021 ◽  
Author(s):  
Padam Prasad Paudel ◽  
Dharma Raj Pokhrel ◽  
Sajan Koirala ◽  
Lalan Baitha ◽  
Dae Hyun Kim ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Crop Production ◽  
Rice Production

scholarly journals Crop productivity as affected by fertilizer management options in Boro -T.aman cropping pattern at farmers' fields

1970 ◽  
Vol 35 (2) ◽  
pp. 287-296
Author(s):  
M Akkas Ali ◽  
M Robiul Alam ◽  
MSH Molla ◽  
F Islam
Keyword(s):  
Grain Yield ◽  
Crop Productivity ◽  
High Yield ◽  
Cost Ratio ◽  
Cropping Pattern ◽  
Plant Nutrient ◽  
Fertilizer Management ◽  
Gross Margin ◽  
Management Options ◽  
Benefit Cost Ratio

The experiment was conducted at multilocation testing (MLT) site, Sujanagar, Pabna during the year of 2003-2004 to find out a soil test based economically viable fertilizer recommendation for the cropping pattern Boro-T. aman. Six treatments viz., moderate yield goal (MYG), high yield goal (HYG), integrated plant nutrient system (IPNS), recommended fertilizer of FRG' 97 (BARC) guide (RF), farmers' practice (FP), and absolute control were employed for the study. The grain yield of Boro and T. aman rice increased 18 and 14%, respectively, by IPNS compared to farmers' practice. Total grain yield of rice was increased by about 16% in the IPNS fertilizer package compared to farmers' practice. Fertilizer nutrients supplied both from organic and inorganic sources in adequate amount have a positive effect on productivity of soil. On an average it was found that highest grain yields of Boro rice (5.37 t/ha) and T. aman (4.49 t/ha) were obtained from integrated plant nutrient system (IPNS) where farmers’ practice gave yield of 4.55 and 3.94 t/ha. The highest average gross margin (70385 Tk./ha) and marginal benefit cost ratio (3.78) was also obtained from IPNS plots. Keywords: Crop productivity; fertilizer management; cropping pattern. DOI: 10.3329/bjar.v35i2.5892Bangladesh J. Agril. Res. 35(2) : 287-296, June 2010

scholarly journals Peach Brown Rot: Still in Search of an Ideal Management Option

Agriculture ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 125 ◽  
Author(s):  
Vitus Ikechukwu Obi ◽  
Juan José Barriuso ◽  
Yolanda Gogorcena
Keyword(s):  
Fungal Pathogens ◽  
Crop Production ◽  
Control Strategies ◽  
Brown Rot ◽  
Management Option ◽  
Management Options ◽  
Pests And Diseases ◽  
Resistant Varieties ◽  
Rot Disease ◽  
Post Harvest Loss

The peach is one of the most important global tree crops within the economically important Rosaceae family. The crop is threatened by numerous pests and diseases, especially fungal pathogens, in the field, in transit, and in the store. More than 50% of the global post-harvest loss has been ascribed to brown rot disease, especially in peach late-ripening varieties. In recent years, the disease has been so manifest in the orchards that some stone fruits were abandoned before harvest. In Spain, particularly, the disease has been associated with well over 60% of fruit loss after harvest. The most common management options available for the control of this disease involve agronomical, chemical, biological, and physical approaches. However, the effects of biochemical fungicides (biological and conventional fungicides), on the environment, human health, and strain fungicide resistance, tend to revise these control strategies. This review aims to comprehensively compile the information currently available on the species of the fungus Monilinia, which causes brown rot in peach, and the available options to control the disease. The breeding for brown rot-resistant varieties remains an ideal management option for brown rot disease control, considering the uniqueness of its sustainability in the chain of crop production.

scholarly journals Prevalence and mitigation of aflatoxins in Kenya (1960-to date)

2018 ◽  
Vol 11 (3) ◽  
pp. 341-357 ◽  
Author(s):  
C.K. Mutegi ◽  
P.J. Cotty ◽  
R. Bandyopadhyay
Keyword(s):  
Public Awareness ◽  
Control Measures ◽  
Learning Networks ◽  
Management Options ◽  
Adverse Health Effects ◽  
Documented Information ◽  
Food And Feed ◽  
Safe Food ◽  
Long Term Impact ◽  
The Impact

Aflatoxins are highly toxic metabolites of several Aspergillus species widely distributed throughout the environment. These toxins have adverse effects on humans and livestock at a few micrograms per kilogram (μg/kg) concentrations. Strict regulations on the concentrations of aflatoxins allowed in food and feed exist in many nations in the developing world. Loopholes in implementing regulations result in the consumption of dangerous concentrations of aflatoxins. In Kenya, where ‘farm-to-mouth’ crops become severely contaminated, solutions to the aflatoxins problem are needed. Across the decades, aflatoxins have repeatedly caused loss of human and animal life. A prerequisite to developing viable solutions for managing aflatoxins is understanding the geographical distribution and severity of food and feed contamination, and the impact on lives. This review discusses the scope of the aflatoxins problem and management efforts by various players in Kenya. Economic drivers likely to influence the choice of aflatoxins management options include historical adverse health effects on humans and animals, cost of intervention for mitigation of aflatoxins, knowledge about aflatoxins and their impact, incentives for aflatoxins safe food and intended scope of use of interventions. It also highlights knowledge gaps that can direct future management efforts. These include: sparse documented information on human exposure; few robust tools to accurately measure economic impact in widely unstructured value chains; lack of long-term impact studies on benefits of aflatoxins mitigation; inadequate sampling mechanisms in smallholder farms and grain holding stores/containers; overlooking social learning networks in technology uptake and lack of in-depth studies on an array of aflatoxins control measures followed in households. The review proposes improved linkages between agriculture, nutrition and health sectors to address aflatoxins contamination better. Sustained public awareness at all levels, capacity building and aflatoxins related policies are necessary to support management initiatives.

scholarly journals Sustainable Irrigation through Renovation of Pond: A Case Study on Change of Crop Production, Irrigation, Cropping Pattern and Cropping Intensity Level in Sub Himalayan Terai Region of India

2020 ◽  
pp. 7-18
Author(s):  
Ganesh Das ◽  
Sankar Saha ◽  
F. H. Rahman ◽  
Surajit Sarkar ◽  
Sujan Biswas ◽  
...  
Keyword(s):  
Crop Production ◽  
Irrigation System ◽  
Intensity Level ◽  
Cropping Pattern ◽  
Cropping Intensity ◽  
Potential Impact ◽  
Sustainable Irrigation ◽  
Rainfall Region ◽  
Rural Appraisal

Terai region of West Bengal fall under high rainfall region but 90% rainfall occurs in kharif season and drought observed during rabi season.  NICRA project started in the Cooch Behar District during 2011. The project area and plan of work were selected on the basis of participatory rural appraisal method. The experimental trial was conducted from 2011 to 2019. The objective of the experiment was to development of sustainable irrigation system through renovation of pond and its impact on crop production. It was found from the study that pond renovation has potential impact on increasing crop yield, cropping intensity, copping system and area of irrigation.

scholarly journals A Way Forward to Combat Insect Pest in Rice

2021 ◽  
Vol 25 (1) ◽  
pp. 1-22
Author(s):  
MP Ali ◽  
B Nessa ◽  
MT Khatun ◽  
MU Salam ◽  
MS Kabir
Keyword(s):  
Yield Loss ◽  
Production Systems ◽  
Insect Pests ◽  
Insect Pest ◽  
Brown Planthopper ◽  
Mobile App ◽  
Rice Production ◽  
Economic Losses ◽  
Pest Species ◽  
Management Options

The damage caused by insect pest is the continual factor for the reduction of rice production. To date, 232 rice insect pest species are identified in Bangladesh and more than 100 species of insects are considered pests in rice production systems globally, but only about 20 - 33 species can cause significant economic loss. The major goal of this study is to explore all the possible ways of developed and proposed technologies for rice insect pests management and minimize economic losses. Insect pests cause 20% average yield loss in Asia where more than 90% of the world's rice is produced. In Bangladesh, outbreak of several insects such as rice hispa, leafroller, gallmidge, stem borers and brown planthopper (BPH) occurs as severe forms. Based on previous reports, yield loss can reach upto 62% in an outbreak situation due to hispa infestation. However, BPH can cause 44% yield loss in severe infestested field. To overcome the outbreaks in odd years and to keep the loss upto 5%, it is necessary to take some preventive measures such as planting of resistant or tolerant variety, stop insecticide spraying at early establishment of rice, establish early warning and forecasting system, avoid cultivation of susceptible variety and following crop rotation. Subsequent quick management options such as insecticidal treatment for specific insect pest should also be broadcasted through variety of information systems. Advanced genomic tool can be used to develop genetically modified insect and plants for sustainable pest management. In addition, to stipulate farmers not use insecticides at early crop stgae and minimize general annualized loss, some interventions including training rice farmers, regular field monitoring, digitalization in correct insect pests identification and their management (example; BRRI rice doctor mobile app), and demonstration in farmers field. Each technology itself solely or combination of two or more or all the packages can combat the insect pests, save natural enemies, harvest expected yield and contribute to safe food production in Bangladesh. Bangladesh Rice J. 25 (1) : 1-22, 2021

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