Open Access Original Research Article

Economic Implication of the Fall Armyworm in Ekiti State, Nigeria

Ajiboye Abiodun, Adeola Abiola Oso, Ojo Oluwatoyin John

Asian Research Journal of Agriculture, Page 1-9
DOI: 10.9734/arja/2020/v13i130092

Aim: This study was conducted to investigate the economic implication years after an outbreak of armyworm among the smallholding farmers in Ekiti State, Nigeria.

Methodology: A combination of purposive and snowball sampling techniques were used to select 60 respondents in four communities of the State. Thematic information from the semi-structured questionnaire related to the socio-economic characteristics of respondents, their enterprise characteristics, farmers’ perception of significant constraints militating against maize production in the study area, as well as the efficacy of management strategies adopted by the respondents. Data was analyzed with descriptive statistics and Tobit regression.

Results: The study revealed that maize farming was mostly on smallholdings owned by males within the active age of 35 years. These farmers practised mixed cropping system whereby maize is planted with other crops in a shifting cultivation pattern. Also, the respondents identified lack of inputs, lack of fund and credit facilities, climate change, disease and pest outbreak, inadequate storage and processing facilities, and imperfect information dissemination as significant constraints militating against self-sufficiency in maize production. The most debilitating of these constraints was the outbreak of the Fall armyworm, which ravaged maize farms. Information gathered revealed that higher percentages of the respondents combated this notorious pest with the use of synthetic chemicals alongside other management approaches. The result of the gross margin revealed that net return per hectare to maize production was N27, 510. The Tobit results revealed that only pests’ infestation in the previous year and age were significant with maize output loss.

Conclusion: The Fall armyworm outbreak resulted in an economic downturn for maize farmers in Ekiti State.

Open Access Original Research Article

Evaluation of Genotypic Performances in Native Rice Landraces of Bangladesh

S. Jui, M. Hossain, D. Devnath, B. K. Biswas, P. Upretee

Asian Research Journal of Agriculture, Page 10-20
DOI: 10.9734/arja/2020/v13i130093

Field experiments were carried out at Dinajpur, Nilphamari and Faridpur from July, 2017 to March, 2018 to evaluate the performance of native land races of rice viz., Chinigura, Kataribhog, Radhunipagol, Badshabhog, Kalozira, Uknimadhu, Dudshar, Salna, Shitabhog and Zirashail to assess G x E interaction against five quantitative characters, plant height (cm), productive tillers/hill, 1000-grain weight (g), grain yield/m2 and days to maturity, and three qualitative characters, proline (%) as µmol/g fresh weight, aroma from green leaves and cooked rice. The field experiment was conducted in Randomized Complete Block Design with three replications. The highest grain yield (390.25 g/m2) was obtained from Radhunipagol at Dinajpur. Next to Radhunipagol, Kataribhog produced higher grain yield (350.00 g/m2) which was significantly higher than that of Nilphamari and Faridpur but Radhunipagol was suited both for Dinajpur and Nilphamari. The cultivar, Kalozira was adapted to three locations as reflected by its regression coefficient very close to unity (b=0.92) and deviation from the coefficient estimated very near to zero (s2d=0.16). Maximum proline was estimated (18.7 µmol/g fresh weight) from Chinigura cultivated at Dinajpur. The proline (%) estimated average from Kalozira at three locations and the range varied from 14.00 -15.90 µmol/g fresh weight. Dinajpur appeared as the best and Faridpur as an unfavorable location for local aromatic rice cultivars. Since, aroma was assessed through sensory method the maximum aroma was assessed from Chinigura under Dinajpur but its content gradually decreased at Nilphamari and Faridpur. The aroma assessed from cooked rice ranged from 7.05-8.90 over three locations but maximum aroma was assessed under Dinajpur. Chinigura, Radhunipagol and Kataribhog found suitable for Dinajpur, and Kalozira and Badshabhog might suggest cultivating over the locations of Bangladesh.

Open Access Original Research Article

Analyzing Rice Farmers’ Intention to Adopt Modern Rice Technologies Using Technology Acceptance Model (TAM)

Ryan Mark A. Ambong, Maybelle A. Paulino

Asian Research Journal of Agriculture, Page 21-30
DOI: 10.9734/arja/2020/v13i130094

This paper analyzes rice farmers’ intention to adopt modern rice technologies using the Technology Acceptance Model (TAM). Quantitative data were gathered through a survey among 404 rice farmers selected using three-stage sampling design. The empirical analysis was done using Partial Least Squares Structural Equation Modeling (PLS-SEM) via WARP PLS software version 3.0. The outcome of the hypothesized framework shows that perceived usefulness and relative advantage have a direct and significant influence on farmers’ attitude towards modern rice technologies. This implies that the perceived usefulness and relative advantage of the technology influences the positive or negative attitude of the farmers toward the technology. On the other hand, the model suggests that perceived convenience of the technology does not influence farmers’ attitude. Nevertheless, the hypothesized model demonstrates that farmers’ intention influences their decision to adopt modern rice technologies. The paper suggests that further studies be conducted to incorporate external variables in TAM.

Open Access Original Research Article

Selection of Genotypes and Contributing Characters to Improve Seed Cotton Yield of Upland Cotton (Gossypium hirsutum L.)

M. M. A. Ali, S. Kundu, M. F. Alam, B. K. Biswas, M. Hasanuzzaman

Asian Research Journal of Agriculture, Page 31-41
DOI: 10.9734/arja/2020/v13i130095

The experiment was conducted at Cotton Research Centre, Chowgacha, Jessore during 2015-2016 with twenty genetically diverged genotypes, with a view to select desirable genotypes and important characters enhancing seed cotton yield in upland cotton. The experiment was laid out in RCBD with three replications. The unit plot size was 4.5 m x 4.5 m and the spacing, 45 cm ×90 cm. Data were recorded from randomly selected ten plants on monopodial branches plant-1, primary sympodial branches plant-1,secondary sympodial branches plant-1, main stem nodes plant-1, days to 1st (5%) flowering, days to 1st boll splitting, bolls plant-1, single boll weight (g), unburst bolls plant-1, plant height (cm), seeds boll-1, seed cotton yield (kg ha-1). The genotype JA-08/D produced the highest seed cotton yield (3430 kg ha-1) followed by two genotypes JA-08/C (3329 kg ha-1) and JA-08/E (3226 kg ha-1). Though high heritability (90.36-97.46%) were estimated for four characters but high heritability along with high genetic advance values were observed for bolls plant-1, boll weight and seeds boll-1. The moderate heritability (83.58%) with high genetic advance (48.54%) suggests seed cotton yield is controlled by additive and non-additive genetic factors. In general, genotypic correlation coefficient was higher than corresponding phenotypic correlation coefficient due to inherent potential of the genotypes for expressing the individual characters. However, six characters, secondary sympodial branches plant-1, main stem nodes plant-1, days to 1st flowering, bolls plnat-1, boll weight and seeds boll-1 showed positive and significant association. Upon partitioning the correlation coefficients of seed cotton yield with other characters confirmed significant contribution of three characters like bolls plant-1, boll weight and seeds boll- 1. Therefore, three genotypes, JA-08/D, JA-08/C and JA-08/E and three characters, bolls plant-1, boll weight and seeds boll- 1 may be considered by the breeders for improving seed cotton yield in upland cotton.

Open Access Original Research Article

Genetic Variability and Performance Evaluation of Cowpea [(Vigna unguiculata (L.) Walp] Accessions on High Altitude of Jos Plateau State, Nigeria

D. Timon, E. H. Kwon- Ndung

Asian Research Journal of Agriculture, Page 42-52
DOI: 10.9734/arja/2020/v13i130096

The present study was carried out to evaluate the genetic variability and performance evaluation of cowpea (Vigna unguiculata (L.) Walp) accessions with the objective of selecting accessions with the best adaptability and potentiality for upgrading grain yield and other related traits on high altitude of Jos plateau. A field experiment was therefore carried out at Dagwom farm at the National Veterinary Research Institute (NVRI) Vom, in Jos South Local Government area of Plateau state, during the 2013 and 2014 rainy seasons. The treatments consisted of eighty (80) cowpea g accessions obtained from International Institute for Tropical Agriculture (IITA) Ibadan, Nigeria. The experiment was laid out in a Randomized Complete Block Design (RCBD) in two replicates. The result was analysed using (ANOVA) model and showed significant difference at (P<0.01) among the entries for all the characters accessed. High phenotypic coefficient of variability (PCV) compared with genotypic coefficient of variability (GCV) coupled with low environmental coefficient of variability (ECV) were observed for all the yield and related traits accessed. High broad sense heritability (h2) coupled with high genetic advance (GAM %) attributed to high additive gene effect observed for all the characters observed in this study, except days to maturity which recorded high heritability with moderate genetic advance. In terms of performance, TVU-2972 and TVU-2174 were selected as accessions with high establishment capacity, TVU-4578 and TVU-7705 were selected as the early maturing accessions, while TVU-10431 was selected as the bold seeded genotype. The highest grain yield was produced by TVU-3188 and TVU-7918. All the above accessions were selected based on their high mean performance compared to other accessions. There is, therefore, need for hybridization between these selected accessions for evolving unique varieties of cowpea on high altitude area of Jos plateau.