Open Access Original Research Article

Effect of Nitrogen and Potassium on the Yield Components of BARI Bush Bean-2 and Post-harvest Nutrient Status of the Soil

Basudeb Roy, Alok Kumar Paul, A. T. M. Shamsuddoha

Asian Journal of Agricultural and Horticultural Research, Page 9-18
DOI: 10.9734/ajahr/2020/v5i430057

A field experiment was carried out at Sher-e-Bangla Agricultural University Farm during the Rabi season of 2008 to investigate the effect of nitrogen and potassium on the yield and yield components of BARI Bush Bean-2. The red brown terrace soil of Tejgaon was silty clay loam in texture having pH 5.6. The experiment was conducted in a Randomized Complete Block Design (RCBD) with three replications. The experiment comprises 4 levels of nitrogen in the form ofurea (0, 40, 80 and 120 kg nitrogen/ha) and 4 levels of potassium from Muriate of Potash (0, 20, 40 and 60 kg potassium /ha). There was combination of sixteen treatments including control (no fertilizer). The results obtained revealed that different levels of nitrogen and potassium showed significant variations on the parameters studied. The treatment N80K40 (80 kg nitrogen + 40 kg potassium) gave the highest pod length (11.67 cm), pod diameter (3.13 cm), average single pod weight (5.99 g), total pod weight per plant (29.07 g), pod yield per plot (2033.33 g) and pod yield per hectare (4.96 tons).Thus the findings of the experiment suggested that combined use of 80 kg nitrogen + 40 kg potassium produced the maximum yield of BARI Bush Bean-2 in red brown terrace soil of the Tejgaon series.

Open Access Original Research Article

Use of Mobile Phones in Improving Livelihoods among Horticultural Farmers in Parts of Kaduna Northern Guinea Savannah Eco-zone: Empirical Study of Igabi Local Government Area of Kaduna State

A. I. Sodimu

Asian Journal of Agricultural and Horticultural Research, Page 19-26
DOI: 10.9734/ajahr/2020/v5i430058

The study examined the use of mobile phones in improving the livelihoods of rural horticultural crop farmers in Igabi Local Government Area of Kaduna State. Eighty (80) questionnaires were sampled among horticultural crop farmers who own and use mobile phones and seventy-six (76) questionnaires were retrieved. A multistage sampling technique was used in sampling the respondents. The data collected is analyzed using descriptive statistics and regression analysis. The results showed that 46.05% are males and 53.95% are females, 26.32% were between 31-40 years, 55.26% were married and 52.63% had at least secondary education. Data further revealed that 52.63% have owned handsets for at least 4-6years and 56.58% obtained the sets from personal savings. Mobile phone usage improved the livelihood in reducing transport cost which was highlighted by 96.05% of the sampled farmers, reduced exploitation/low pricing by middlemen and improved income of producers (84.21%). It also enhanced interaction among rural horticultural crop farmers at different locations (92.11%). Poor network coverage (39.47%), poor power supply (19.74%) and theft/loss of handsets (10.53%) are the major constraints associated with mobile phone usage. The regression analysis showed significant relationship between age, household size, educational status and use of mobile phone (P<0.05) level of significance. Therefore, it is recommended that Federal Government should improve electricity supply to rural farm communities and provides economic incentives, such as tax deductions for imported equipment, for mobile service providers to expand their mobile service coverage in rural/horticultural production areas. Furthermore, the state and local government should improve rural electricity supply to enable rural horticultural crops farmers utilize the full potentials of mobile phones.

Open Access Original Research Article

Physiological Mechanism Involved in the Response to Four Lettuce Varieties to a Pre-transplant Root Restriction and a 6, benzyl aminopurine (BAP) Spray

L. Campolongo, D. Carnelos, J. Lozano Miglioli, P. Fuginuma, E. Giardina, A. Di Benedetto

Asian Journal of Agricultural and Horticultural Research, Page 27-43
DOI: 10.9734/ajahr/2020/v5i430059

Vegetable yield is positively related to the environment and negatively affected by the pot root restriction during both the nursery and post-transplant stages. Root restriction is a physical stress imposed on the root system when plants are grown in small containers, which leads to a pronounced decrease in root and shoot growth at both the transplant and pot stages. Based on the assumption that the plant responses are mainly associated with a negative hormonal signaling from roots, some researchers have proposed that these abiotic stresses may be overridden by using a pre-transplant spray with benzyl amino purine (BAP), a synthetic cytokinin able to regulate plant metabolism. Although the physiological mechanisms induced by BAP have been described, the implementation of commercial applications of BAP for vegetables is still a pending issue. The aim of this work was to analyze growth changes in four lettuce genotypes in the presence of different root restrictions degree by the use of different plug cell volumes but sprayed with a single BAP spray under the hypothesis that it would play a role as abiotic stress alleviators. Our results showed that the higher biomass accumulation in lettuce plants non root-limited and BAP-sprayed ones are supported by higher photosynthetic rates, by higher leaf number initiation and expansion and by photo assimilate partition to shoots. Understanding the plant responses to this hormonal manipulation and the physiological mechanism involved will allow adjusting the agronomic advice for different vegetables and reaching commercial yields to each of them.

Open Access Original Research Article

Thyme (Thymus vulgaris L.) Root Rot/Wilt in Minia Governorate, Egypt

Mariam H. Ishak, Marzouk R. Abdel-Latif, Harby M. Abd Alla, Mohamed M. N. Shaat

Asian Journal of Agricultural and Horticultural Research, Page 44-57
DOI: 10.9734/ajahr/2020/v5i430060

Thyme (Thymus vulgaris L.) is a medicine and aromatic plant, have a great economic important due to the great income that it provides and other diversified usages. Damping-off, root rot and wilt symptoms were observed in field thyme grown in Maghagha and Beni Mazar districts, Minia Governorate, Egypt, during November to March, 2016-2017. Survey, sampling and pathogenicity tests were carried out. Fusarium semitectum, F. solani, Rhizoctonia solani and Macrophomina phaseolina were the dominant pathogens causing thyme damping off, root rot and wilt. The inhibitory effect of two resistance inducer substances (salicylic and ascorbic acids) three fungicides (Cure M 72% WP, Rizolex Ex-T 50% WP and Rolex 50% WP) on the growth of the most pathogenic fungi in vitro was investigated. Salicylic acid inhibited the growth of F. semitectum and R. solani completely at 200ppm but the growth of M. phaseolina was completely inhibited at 400ppm. The complete inhibition for the growth of all tested pathogens was occurred at 400 ppm Ascorbic acid. F. semitectum and R. solani were more sensitive to Rizolex T, while M. phaseolina was more sensitive to Cure-M, (causing the lowest diameter averages The results of the present investigation showed the possibility to use certain antioxidants as fungicides alternatives to control plant pathogenic fungi. According to the available literature, this is a first study on thyme root rot/wilt in Egypt.

Open Access Review Article

Arthropod Pests and Tomato Value Chain: Review of Research Cocktails in Nigeria

Adeola Abiola Oso

Asian Journal of Agricultural and Horticultural Research, Page 1-8
DOI: 10.9734/ajahr/2020/v5i430056

Background: Tomato is an essential and remunerative staple food widely grown and consumed in all parts of Nigeria. The northern parts of the country produce ninety-eighth percent of the tomatoes consumed annually. However, higher percentages of tomatoes produced in these regions are lost due to gaps recorded in its value chain.

Principal Findings: Tomato value chain needs to be strengthened from production to processing, preservation and good marketing structure. Challenges bedevilling tomato value chain in Nigeria include poor accessibility to production inputs such as seeds, nurseries, fertilizers; poor packing systems and transportation problems; marketing challenges and yield reduction caused by a complex of arthropod pests attacking the crop. The major arthropod pests inflicting economic damage on tomato include fruit borer, whitefly, aphid, thrips and leaf miners.

Interventions: Considering the Nigerian Government’s recent interventions: “close border”, increased tariffs on the importation, and different incentives such as “tax holiday” and introduction of zero percent import duty on greenhouse equipment, soft loans through Bank of Agriculture as well as a national collaborative effort against the menace of tomato leaf miner (Tuta absoluta) invasion; How much of these interjectory efforts have translated to the realization of national self-sufficiency in the tomato value chain?

Conclusion: This paper highlights the general introduction of tomato, its botany, nutritional benefits, tomato value chain in Nigeria, Nigerian government interventions towards its sustainability with particular focus on research cocktails at combating the problems of arthropod pests on the tomato to identify the probable critical solutions to these harmful pests.