Open Access Short Research Article

Effect of Fertilization and Bacterial Inoculation on the Growth of Alder (Alnus sibirica) in Coal Mine Soil

Md. Omar Sharif, Chang-Seob Shin

Asian Research Journal of Agriculture, Page 39-45
DOI: 10.9734/arja/2020/v12i230081

This study was conducted to evaluate the effect of fertilization and nitrogen fixing (N-fixing) bacterial inoculation on the vegetative growth of alder (Alnus sibirica) plant species while grown in coal mine soil. The study was conducted in a greenhouse of the Forest Science Department, Chungbuk National University, South Korea, during the period of May 2019 to July 2019. A completely randomized design (CRD) comprising of four treatments, including T0—non-fertilized non-inoculation (control), T1—fertilization, T2—bacterial inoculation and T3—fertilization along with bacterial inoculation with three replications were used in the study. The results of the study showed that maximum growth of all studied parameters of alder were observed in fertilization along with bacterial inoculation treatment (T3) and this treatment had significant effect on the growth of these parameters as compared to control, except root dry weight and shoot/root ratio. Fertilization treatment (T1) showed significant increase of stem height, shoot fresh and dry weight, plant dry weight, canopy spread, number of leaves, branches and nodes per plant, leaf area and leaf area index of alder in coal mine soil, as compared to control. Bacterial inoculation treatment (T2) also had positive effect on the vegetative parameters of plants comparing to control, excluding root length, root dry weight, shoot/root ratio, and canopy spread. Therefore, it can be summarized that fertilizer application and bacterial inoculation to the soil have a significant role in improving the vegetative growth of alder in coal mine soil.

Open Access Original Research Article

Growth and Yield Performance of Six Aman Rice Varieties of Bangladesh

Soyema Khatun, Md. Monjurul Alam Mondal, Md. Ibrahim Khalil, M. Roknuzzaman, Md. Mahi Imam Mollah

Asian Research Journal of Agriculture, Page 1-7
DOI: 10.9734/arja/2020/v12i230077

A field experiment was conducted with six rice varieties to determine their growth and yield performance. The experiment was laid out in a randomized complete block design (RCBD) with four replications. All the growth and yield contributing attributes varied significantly among the six rice varieties. The results revealed that in all rice varieties maximum growth performance observed at 58-68 Days after transplanting and maximum dry matter production was observed at 68 days after transplanting. Maximum number of filled spikelet observed in Binadhan-17 (164.89/ penical) and that was significantly different from other varieties. Percent of sterile spikelet was highest in BRRI dhan39 (12.9%) and that was statistically similar with Binadhan-16 (11.96%) and BRRI dhan33 (12.36%). Maximum 1000-seed weight was observed in Binadhan-17 (27.25 g). Highest grain yield was obtained from Binadhan-17 (6.13 t/h) that was significantly different from other varieties. Lowest grain yield observed in BRRI dhan39 (4.49 t/h) that was statistically similar to BRRI dhan33 (4.57 t/h) and Binadhan-7 (4.86 t/h).

Open Access Original Research Article

Assessment of a Climate-smart Cropping Combination for Integrated Crop and Livestock Production System

Langa Tembo, Lydia M. Chabala, Pharaoh C. Sianangama

Asian Research Journal of Agriculture, Page 8-15
DOI: 10.9734/arja/2020/v12i230078

Aims: To investigate sustainable climate-smart cropping combinations for integrated production of crops and livestock.

Study Design: The mother baby trial design was used. The mother trial being an on-station experiment and the on-farm being baby trials. The experiment was arranged as a split plot design. The main plots were 3 types of soil amendments; cattle manure, fertilizer and a control. The subplots were eight (8) crop combinations, arising from velvet bean, cowpea, rhodes grass and ryegrass.

Place and Duration of Study: The on-station field experiment was located at Liempe farm of the University of Zambia, in Chongwe district. The on-farm experiments were laid in Mazabuka and Chibombo districts of Zambia for two consecutive seasons, 2016/17 and 2017/18 cropping  seasons.

Methodology: The cropping combination responses were measured based on variable performance of maize test-crop. The ‘soil amendments type’ and ‘crop combination’ performance were evaluated using analysis of variance. Means were separated using Fisher protected Least Significant Difference (LSD) at α = 0.05. Principal component analysis (PCA), was also undertaken to further understand responses among crop combinations. Farmers reactions arising from experimental implementation was qualitatively analysed using content analysis.

Results: Significant differences (P = .05) across cropping combinations on measured variables (for maize test crop) were exhibited among soil amendments type at an on-station trial during the 2017/ 18 season. Fertilizer soil amendment type was the best performer followed by manure and the control. Significant differences (P = .05) were also obtained among crop combinations across soil amendment type in all experimental sites. Crop combinations with velvet bean performed better than others. Qualitative grass inspection showed that rhodes grass was a better performer than rye grass.

Conclusion: Maize grown in combination with legumes particularly velvet beans and rhodes grass are a viable option as a smallholder farming practice in a changing climate.

Open Access Original Research Article

Assessment of Agricultural Technology Adoption Behaviour among Crop Farmers in Ikwerre Local Government Rivers State

A. U. Nnodim, W. I. Raji

Asian Research Journal of Agriculture, Page 16-26
DOI: 10.9734/arja/2020/v12i230079

The study assessed agricultural technology adoption behavior among small scale crop farmers in Ikwerre local Government, Rivers state. The aim of the study was to assess small scale farmers’ adoption behavior on new farm input, farm techniques and farm machineries/tools. One hypothesis was tested to determine the influence of crop farmers’ socioeconomic characteristics on agricultural technology adoption behavior. The study adopted a correlation survey design. The population of the study was all registered crop farmers in Ikwerre local Government Rivers State.  Eighty (80) small scale crop farmers were selected using cluster random sampling technique. The instrument used for the study was a self-structured questionnaire which was face and content validated by research experts. The reliability of the instrument was established using Cronbach Alpha which gave to 0.88 reliability coefficient. Mean and standard deviation were used to analyze the data gathered from the respondents and the hypothesis was tested using multiple regression analysis at 0.05 level of significance. The study found that uncertainty, fear of taking risk to test the new inputs and waiting to see the consequences of the new technology on early adopters among others are the agricultural technology adoption behaviour among crop farmers in Ikwerre local Government Rivers State. The study also concluded that socio-economic characteristics of farmers significantly influence agricultural technology (Farm input, techniques, and machineries/tools) adoption behavior among crop farmers. It was recommended that Agricultural extension agents should publicize the positive result of the new farm technology among rural farmers so as to increase the adoption rate of agricultural technology.

Open Access Original Research Article

Gender Differentials and Optimal Combination of Crop Enterprises under Limited Resource Conditions in South Western Nigeria: A Case Study of Cocoa-based Farming Systems

G. Kelani, T. Alimi, B. J. Amujoyegbe, A. S. Bamire, A. Onwuemele, A. D. Kehinde

Asian Research Journal of Agriculture, Page 27-38
DOI: 10.9734/arja/2020/v12i230080

This study investigated gender differentials and an optimal combination of crop enterprises in southwestern. Specifically, it described the socio-economic characteristics of households in cocoa-based farming by gender; determine enterprise combinations of households in the cocoa-based farming systems and profile gender participation in optimal farm plan activities in cocoa-based farming systems. A multistage sampling procedure was used to select 200 respondents, comprising 147 males and 53 females. Data were collected on socioeconomic characteristics such as age, household size, years of schooling and year of farming experience among others. Data were analyzed using descriptive statistics and linear goal programming. Descriptive statistics show that majority of the respondents aged above 60 years comprising of 46.5% male and 2% females, married comprising of 69.5% male and 20% female, and had a household size of between 7 and 12 persons, with males accounting for 25.5% and females 12.5%. Most of the respondents had primary school education in the study area, with 73.8% male and 26.2% female. Goal ranking showed that food security; increased income; and reduced production cost are the most important goals among farmers in the cocoa-based farming system. The linear goal programming model shows that Cocoa and Banana; Cocoa, Oil Palm and Plantain and Cocoa, Maize, Cassava and Orange are the optimal enterprise combination. It further showed that farmers will incur a cost of N38, 833.56/ha on the three basic activities to achieve the stated goals. The shadow prices for the fully utilized resources were N9348, N1352 and N6.52 for land, hired labour and capital respectively. The result further showed that 67 percent of the goal components was achieved. Percentages of female-headed households in cocoa/banana, cocoa/oil palm/plantain and cocoa/maize/cassava/orange enterprises were 45%, 31% and 0% respectively. For the goals of food security, increased income and reduced farm production costs to be accomplished in the study area, farmers should produce 0.2 ha of cocoa/banana, 1.2 ha of cocoa/oil palm/plantain and 1.25 ha of cocoa/maize/cassava/orange in the study area. Also, conscious efforts should be made by policymakers to ensure gender equality in the access and use of productive farm resources.