Volume 7, Issue 3

Response of Ethiopian Mustard (Brassica carinata A. Braun) to Different Levels of Vermicompost in North East, Botswana
Original Research
A pot experiment was carried out in a net shade in Impala Research Station, North East District of Botswana, to investigate the response of Ethiopian mustard (Brassica carinata A. Braun) to different levels of vermicompost. The experiment treatments comprised of pure soil (Treatment 1 (T1)) and homogeneous mixture of vermicompost and sandy loam soil (T2 = 25% VC, T3 = 50% VC, T4 = 75% VC and T5 = 100% VC). In each pot, two plants were raised and the data of parameter measured were collected from them. The results showed that increasing the dosage of vermicompost, significantly increased number of leaves, plant height, leaf length, leaf width, leaf area and leaf weight. The performance of Ethiopian mustard did not differ significantly at a range between 50% VC and 100% VC in all measured parameters. Leaf length, leaf width and leaf area reached higher values at 75% VC. This suggest that level 75% VC can be used in a potting medium when growing Ethiopian mustard as a leafy vegetable.
World Journal of Agricultural Research. 2019, 7(3), 112-118. DOI: 10.12691/wjar-7-3-5
Pub. Date: August 13, 2019
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Inheritance Study of Aphid (Aphis craccivoraKOCH) and Rosette Resistance in Groundnut (Arachis hypogaea L.)
Original Research
This study was conducted to investigate the gene effects, heritability, genetic advance and number of effective factors controlling the inheritance of aphid and rosette resistance and other quantitative characters. Two aphid resistance, one rosette resistance, one aphid susceptible and one rosette susceptible lines were used as parents to develop F1s, F2s, BC1P1and BC1P2. The seventeen generations obtained were evaluated along with three checks in three replications using randomized complete block design. The three parameter model was adequate to explain variations observed in the inheritance of days to fifty percent flowering, plant height, number of seeds per plant and shelling percentage. Non allelic interaction was significant with high narrow-sense heritability as obtained for rosette disease incidence, rosette severity index, number of matured pods per plant and net pod yield. It is possible to expect advance for these characters in further segregating generations. Wide ranges of narrow and broad sense heritability accompanied with moderate to high genetic advance except for aphid infestation index were obtained for the characters studied. The number of effective factors revealed that the understudied characters were governed by mono, oligo, and polygenes.
World Journal of Agricultural Research. 2019, 7(3), 103-111. DOI: 10.12691/wjar-7-3-4
Pub. Date: July 13, 2019
3121 Views1042 Downloads1 Likes
Impact of Agricultural Transformation Agenda Support Programme Phase-1 in Promoting Agricultural Extension Service Delivery in Kebbi and Sokoto States, Nigeria
Original Research
This study evaluated the impact of agricultural transformation agenda support Programme phase-1 in promoting agricultural extension service delivery in Kebbi and Sokoto states, Nigeria. A Multi stage sampling technique was employed to draw a sample of 480 respondents from sokoto and kebbi states comprising seven Local Government Areas (LGAs) in kebbi and one LGA in sokoto state, respectively. A set of structured questionnaires were used to obtain information from the respondents. Descriptive statistics and Logit regression analysis were used for data analysis. The result of the study showed that majority (87.5%) and (86.3%) for both participating and non-participating respondents were male while (12.5%) of the participating and (13.8%) of the non-participating farmers were females respectively. The research study also found out that Agricultural Transformation Agenda Support Programme Phase-1 (ATASP-1) provided agro-inputs to farmers such as improved varieties of seeds (95.8%), fertilizers (49.6%), Agro-chemicals (33.3%). It was found out that ATASP-1 constructed different kinds of infrastructural facilities such as market stalls (17.5%), dispensaries (12.5%), primary school classrooms (27.5%), overhead tanks (12.9%) etc to benefiting communities. The study further revealed that (87.5%), (96.7%) and (1.3%) respondents benefited from value addition techniques, capacity building and farmer training respectively. Logit regression analysis showed that the coefficient of age (0.028) positively and significantly enhanced adoption of ATASP-1. Similarly, the estimated coefficient of t-value of educational level (0.301), Household size (0.011) and farming experience (0.023) significantly influenced the adoption of ATASP-1 innovations. It is concluded that ATASP-1 impacted positively on the livelihood of the participating farmers. It is recommended that provision of extension services to farmers in groups should be encouraged due to scarcity of Agricultural Extension Agents (AEAS), provision of more improved inputs like seeds of various crops, fertilizers and agro chemicals etc, provision of extension services through non-visits such as radio and television programmes should be intensified by ATASP-1, organizing refresher courses and in-service training for extension staff to equip them with modern skills to effectively disseminate improved agricultural technology to farmers. Timely/prompt supply of funds for by Government for effective implementation of the programme.
World Journal of Agricultural Research. 2019, 7(3), 94-102. DOI: 10.12691/wjar-7-3-3
Pub. Date: June 19, 2019
3428 Views1010 Downloads
Gene Actions and Combining Ability Analysis for Some Seed Characters in Citrullus Mucosospermus (Fursa)
Original Research
In order to suggest breeding strategies to improve Citrullus mucosospermus (Fursa), 4 × 4 complete diallel cross design involving Bebu, Wlêwlê small seeds 1 (Wss1), Wlêwlê small seeds 2 (Wss2) and Wlêwlê small seeds3 (Wss3) genotypes was used to assess combining ability and gene actions involved in the inheritance of six seed traits. The F1 direct and reciprocal crosses plus the parental inbred lines coming from these cultivars were grown in a randomized complete block design with three replications. The results indicated the existence of genetic variation between parental lines for all investigated seed traits. Combining ability analysis exhibited the involvement of both additive and non-additive types of gene actions in the expression of all studied traits, suggesting, doing the selection in C. mucosospermusheterogeneous populations for improving these seed traits. Non-additive gene actions were predominant in the inheritance of investigated traits indicating the possibility of the heterosis exploitation or the postponement of selection to later generations for improving genetically these traits. Bebu appeared the best general combiner for Mass of fresh seed, Mass of dry seed, Mass of 100 seeds, seed length and seed widthwhile, Wss1 and Wss2 are the best combiners for percentage of seed integuments. Therefore, parental lines Bebu, Wss1, Wss2 and crosses with high significant specific combining ability effects are proposed for their incorporation in C. mucosospermusbreeding programs. The presence of both GCA and SCA effects suggests the use of recurrent reciprocal selection to improve C. mucosospermus seed traits.
World Journal of Agricultural Research. 2019, 7(3), 88-93. DOI: 10.12691/wjar-7-3-2
Pub. Date: May 14, 2019
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Genotype x Environment Interactions on Seed Yield of Inter-racial Common Bean Lines in Kenya
Original Research
Determination of yield stability is critical in identifying new common bean cultivars with either specific or broad adaptation in target environments. This study aimed to assess genotype by environment (G x E) effects on agronomic performance of 78 F1.7lines selected with molecular markers for multiple disease resistance from 16 inter-racial bean populations. Field trials were conducted in low-, medium- and high altitude conditions in Kenya. Data collected on seed yield were subjected to additive main-effects and multiplicative interaction (AMMI) model to separate additive variance from the G x E interaction and to determine the stability of genotypes across locations. Results showed that G x E effects were highly significant (P<0.001), implying that tested lines behaved differently across the three locations. Better yields were recorded from high altitude Tigoni site while the lowest were from low altitude Mwea site. Yield across sites ranged from 1,518 to 2,748; 1,324 to 3,860; 1,537 to 3,722 and 1,010 to 3,718 kg ha-1for pinto, red mottled, red kidney and mixed color bean lines, respectively. Number of pods plant-1was the most strongly correlated to seed yield and could be, therefore, used as an indirect selection criterion for seed yield. The environment was responsible for the largest part of yield variability (86.4%, 84.8%, 82.3% and 49.5% for pinto, red kidney, red mottled and mixed color bean lines, respectively). KMA13-22-21 and KMA13-29-21 were the most stable high yielding lines across locations. Higher yielding lines were the most unstable across sites. Two pinto, four red kidney, 15 red mottled, and two mixed color lines did better than their corresponding checks with yield advantages of 7.6, 14.3, 71.5, and 34.9%, respectively. These lines should, therefore, be selected for further testing and release.
World Journal of Agricultural Research. 2019, 7(3), 76-87. DOI: 10.12691/wjar-7-3-1
Pub. Date: May 05, 2019
6559 Views1968 Downloads