Effect of different plant spacing along with concentrations of growth regulator (mepiquat chloride) and time of foliar application on seeds boll of cotton

ABSTRACT

Plant growth regulators (PGRs) are used in cotton production to optimize yield and quality and even suppressing excess growth whenever necessary. Experiments were conducted PGRs are used in cotton production to optimize yield and quality and even suppressing excess growth whenever necessary. Experiments were conducted in 2017 at Cotton Seed Multiplication, Training and Research Farm, Sreepur, Bangladesh to study the response of cotton yield and quality to different plant spacings, concentration and time of application of mepiquat chloride (MC) growth regulator. The maximum seeds boll-1 (119.61) was recorded at spacing 75 cm × 30 cm and lowest seeds boll-1 (116.92) was marked from spacing 45 × 30 cm. in respect of MC, the highest seeds boll-1 (122) was obtained from foliar sprayed at 3.0 ml L-1 water at 75 DAE and the lowest (109.33) was observed in 1.0 ml MC L-1 water at 25 DAE. Considering combined action, seeds boll-1 was marked highest (122.67) from 3 ml MC L-1 water at 75 DAE with 60 cm × 30 cm spacing and became lowest (106.42) at 1 ml MC L-1 water sprayed at 50 DAE with 45 cm × 30 cm spacing.  So, plant spacing of 60 cm x 30 cm can be practiced for profitable cotton production in Sreepur areas of Bangladesh.

Key words: Plant spacing, growth regulator, time of foliar, seed boll, cotton.

Measuring rainfall in different rice cropping season at Rangpur district in Bangladesh

ABSTRACT

This study examined the rainfall variability among Aus, Aman and Boro season from 1990 to 2020 in Rangpur district of Bangladesh. In this study, rainfall data (1990-2020) was used which gathered from Bangladesh Meteorological Department (BMD). To investigate the seasonal rainfall variation, linear trend analysis was employed. The result of the study exposed that diurnal, monthly and seasonal variation of rainfall were found much anomalies, where annual rainfall increased in Aus and Boro season but decreased in the Aman season. The findings of this research ensure that rainfall has had significant changes in Aus, Aman and Boro season. These changes could have an unfavorable impact on rain-based agriculture in Bangladesh. For sustainable agriculture, various environmental techniques, thresholding, and nationwide rainfall analysis can be useful to support adaptation planning for the rain-driven agricultural economy in Bangladesh.

Key words: Rainfall, season, variability

Effect of different plant spacing along with concentrations of growth regulator (mepiquat chloride) and time of foliar application on lint index of cotton

ABSTRACT

Plant growth regulators (PGRs) are used in cotton production to optimize yield and quality and even suppressing excess growth whenever necessary. Experiments were conducted in 2017 at Cotton Seed Multiplication, Training and Research Farm, Sreepur, Bangladesh to study the response of lint index of cotton to different plant spacings, concentration and time of application of mepiquat chloride (MC) growth regulator. Plant spacings like 45 cm × 30 cm, 60 cm × 30 cm and 75 cm × 30 cm; MC spray @ 1.0, 2.0, 3.0 and 4.0 ml  L-1  water at 25, 50 and 75 DAE for each concentration along with water spray as control, were the treatment variables. Lint index (LI) of cotton was maximum (8.74 g) at spacing 60 cm × 30 cm and the lowest lint index (7.71 g) was recorded from spacing 45 cm × 30 cm. In respect of mepiquat chloride (MC), the highest lint index (9.99 g) was from 3 ml MC L-1 water at 25 DAE and the lowest (7.04 g) with 4 ml MC L-1 water at 25 DAE. Considering treatment combination, LI observed highest (10.30 g) at 4 ml MC L-1 water at 50 DAE with 45 cm × 30 cm spacing and marked lowest (7.00 g) at 4 ml MC L-1 water at 25 DAE with    75 cm × 30 cm spacing treatment combinations.

Key words: Plant spacing, growth regulator, time of foliar, lint index, cotton

Molecular diversity assessment using ssr primers confirming distinct species of jute germplasm under Corchorus genus

ABSTRACT

The aim of the experiment was to find out genetic diversity of some jute germplasm collected from different locations of the world that are stored at the gene bank of Bangladesh Jute Research Institute (BJRI). The experiment was conducted at the laboratory of Cytogenetics department of Genetic Resources and Seed Division of BJRI. Genetic variation among 22 jute germplasm including 9 varieties of BJRI were determined using 33 SSR primers. DNA was extracted from seedlings following mini preparation CTAB method with some modifications. Vertical gel electrophoresis system was used with polyacrylamide gel. Among these,   14 primers were polymorphic and amplified 39 loci. The highest gene diversity value among the polymorphic primers was 0.685 and the lowest was 0.177 with an average of 0.507. The highest genetic distance value (1.0) was found between Corchorus capsularis (white jute) and C. olitorius (dark jute/tossa jute) germplasm. Among the C. olitorius germplasm, the highest genetic distance value (0.4) was found between accession no. 1039 and accession no. 1347. Among the C. capsularis germplasm, accession no. 4484 showed the highest genetic distance value (0.214) with varieties CVL-1 and BJRI Deshi Pat Shak-1. UPGMA dendrogram, based on genetic differences separated the germplasm of two different species in two main clusters and the cluster of C. olitorius is subdivided into two sub-clusters. We found no genetic similarity between the two species of jute. Plant breeders can consider the studied germplasm of C. olitorius as more potential for crossing programs as they have good genetic diversity.

Key words: Genetic polymorphism; Genetic variation; Jute; Molecular markers; SSR Markers; UPGMA dendrogram

SURVEY ON ARTHROPOD PEST OF CAPSICUM AND DIFFERENT PRACTICES USED BY THE CAPSICUM GROWERS AGAINST INFESTATION IN MAJOR GROWING AREAS OF BANGLADESH

ABSTRACT

The study was conducted at Rajbari, Manikganj, Bogura, Sylhet and Kishoreganj district to study on farmers’ practices for the management of capsicum insect pest in major capsicum growing areas of Bangladesh. Data were collected by the researcher during the period from 15 October to 15 November 2018. Among the respondent the maximum (87.2%) capsicum growers were cultivated capsicum in winter season and 12.8% capsicum growers were cultivated in summer season. The highest around 36.00% have low level infestation whereas only 4.80% were belongs to severe level insect pests’ infestation under the study area. Capsicum growers practices (CGPs) related data were collected at two levels: directly from the sample farmers by administering pre-designed and pre-tested questionnaires. Total 11 capsicum varieties were recorded from the study area and the highest used capsicum varieties California wonder (17.21%), Omax hybrid (15.35%), BARI misti morich -2 (13.84%). BARI misti morich-1 (12.36%), Bell pepper (9.1/0%) and Marcuri rosso (7.23%). Total 10 insect pests of capsicum were recorded from the study area. Among the insect pests capsicum fruit borer and aphid were dominant and observed upto 100% respondent farmer’s field. The capsicum growers practices (CGPs) for capsicum insect pest management were generally three broad types. Type I Non-chemical, bio-pesticide and untreated control practices; Type II was combination of chemicals with other management practices and Type III was combination of non-chemicals management practices comprising bio-pesticide, mechanical, cultural and mulching materials. Most of the respondents of capsicum growers (71.14%) practiced Type II, whereas, Type I was practiced by  23.08% and Type III was practiced by only 5.77% of respondents of capsicum growers of the respective districts. The BCR was maximum in CGP 8, CGP 9, CGP11, CGP 12 and CGP 10 (3.12-2.90) while it was minimum (2.06-2.15) in CGP 7 and CGP 15. Application of integrated pest control measures were more effective compared to single control measure for capsicum cultivation regarding insect pest management.

Key words: Capsicum, arthropod pests, infestation, practices.

General evaluation of two success stories of M. A. MIYAN on IUBAT and KBAD

ABSTRACT

Prof. Dr. M.A. Miyan established IUBAT with wide success where he developed two concepts regarding IUBAT and KBAD and published those materials in two reports and referred in the references. On the basis/guideline of the reports, concepts, mission, vision and philosophy of IUBAT and KBAD are developed for future generations. Fig. 1. showed the KBAD’s summary as mission and vision.

Key words: P IUBAT, KBAD, concepts, mission, vision, philosophy.

BACKGROUND, MISSION, VISION AND OPERATIONAL PHILOSOPHY OF IUBAT

IUBAT-International University of Business Agriculture and Technology is the first Nongovernment university in Bangladesh. Prof. Dr. M. Alimullah Miyan was the founder of IUBAT as well as the pioneer regarding the building/development of private university in Bangladesh.In 1980s there were only six universities like Dhaka University, Rajshahi University, Chittagong University, Jahangirnagar University, BAU and BUET where admission capacity covered only 10000-12000 students although there were several lakh good students (better SSC and HSC results) failed to proceed for higher studies. Then thousands of students moved to India and that was the great business for many universities of India. It was really bad days regarding higher education in Bangladesh. Prof. Dr. Alimullah Miyan, Director of the Institute of Business Administration (IBA), Dhaka University with wide depth of national and international latest knowledge, observed the university education crisis of the children came forward with private university concepts. With World Bank sponsor, he visited Kansas State University (KSU), Manhattan, Kansas, USA for 3 weeks where he faced a lot of discussions with 40 Academicians regarding role of universities of USA relevant to society and tried to discover the application of such role of university to the society in Bangladesh. Dr. M.A. Miyan is basically rich is Business Administration and KSU is rich in Agriculture. Moreover, for food security, agriculture is important for Bangladesh. So, Dr Miyan finally took two major issues covering business and agriculture in his concepts, mission and vision and then developed a proposal on “Proposal for establishing a university of business, agriculture and technology at Dhaka, Bangladesh with academic collaboration and recognition of Kansas State University” on April 3, 1989 under his guideline on “Non-government University movement in Bangladesh”. The proposal widely and excellently covered under proper headlines like Introduction, Background, Objectives, Scope of the university, Organization, Resources, Conclusions and a Structure of the University (model). His presentation and discussions with KSU Academician’s were widely fruitful and successful and finally KSU authority came forward to help him in all aspects of academic matters and gave him a letter by Verman C. Harson on April 27, 1989 covering “letter of intent to participate in a new university in Bangladesh”. That was the great success of Dr. Miyan to develop a University of Business Agriculture (UBA) in Bangladesh.