scholarly journals Agro-ecological Variation in the Growth and Development of Grain Amaranth (Amaranthus sp.) in Nigeria

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 652b-652
Author(s):  
A.O. Olufolaji ◽  
Lanre A. Denton
Keyword(s):  
Agricultural Research ◽  
Agronomic Characters ◽  
Yield Attributes ◽  
Ecological Zones ◽  
Qualitative And Quantitative ◽  
Quantitative Characters ◽  
Derived Savanna ◽  
Sudan Savanna ◽  
New Crop ◽  
Agro Ecological Zones

The pale yellow-seeded Amaranth is virtually a new crop in Nigerian agriculture. Under the sponsorship of the National Agricultural Research Project (NARP), 12 accessions were evaluated for agronomic characters and yield attributes in three agro-ecological zones of the country. The results showed significant variation in the agronomic characters of the accessions. Top accessions recorded average grain yields of 4.5, 3.5, and 2.6 t·ha–1 in Sudan savanna, derived savanna, and guinea savanna zones of the country, respectively. Response of the accessions to qualitative and quantitative characters in the zones are discussed.

Participatory sorghum varietal evaluation and selection in Pakistan

2007 ◽  
Vol 55 (1) ◽  
pp. 19-26
Author(s):  
S. Chughtai ◽  
J. Fateh ◽  
M. Munawwar ◽  
M. Hussain
Keyword(s):  
Drought Tolerance ◽  
Agricultural Research ◽  
Selection Process ◽  
Red Rot ◽  
Research Centre ◽  
Trial Methodology ◽  
Improved Varieties ◽  
Ecological Zones ◽  
First Time ◽  
Agro Ecological Zones

A number of improved pipeline varieties of sorghum including PARC SS-1, PARC SS-2 and PARC Ss-15 were planted in various agro-ecological zones of Pakistan for 2 years (2004 and 2005). The participatory Mother-Baby Trial methodology was used for the first time in Pakistan for varietal evaluation and selection. Six varieties of sorghum were evaluated along with the local checks. In general, the pipeline varieties developed at the National Agricultural Research Centre had a yield advantage of 15 to 20% over the local checks and other improved varieties included in the trial. The farmers were involved in the varietal selection process. These varieties were selected by the farmers on the basis of maturity, higher yield, resistance to leaf blight and red rot diseases, drought tolerance, and the dual (grain cum fodder) nature of the varieties. Based on the evaluation and selection, these varieties are being released for general cultivation in various ecologies. The results from participatory trials on various agronomic aspects are presented and discussed in this paper.

scholarly journals Caractérisation Agro-Morphologique De Variétés De Cotonnier (Gossypium Hirsutum) Pour Une Régionalisation Economique Pour La Production Du Coton Au Bénin

2016 ◽  
Vol 12 (36) ◽  
pp. 210
Author(s):  
Hougni Alexis ◽  
Imorou Lucien ◽  
Dagoudo Augustin ◽  
Zoumarou-Wallis Nouhoun
Keyword(s):  
Agricultural Policy ◽  
Agricultural Research ◽  
Cotton Fibers ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Ecological Zones ◽  
Seed Cotton Yield ◽  
Cotton Farmers ◽  
Agroecological Zone ◽  
Agro Ecological Zones

To take more account of the terroir effect in varietal choice and address the concerns of cotton farmers who disapprove the agricultural policy of single variety, research on varietal regionalization was initiated during four campaigns, by the Agricultural Research Center for Cotton Fibers. This idea is reinforced by the diversity of agro-ecological zones of the country. The nonrenewal of the variety in extension since the 2002-2003 campaign is also an element of justification concerns of industry players. This study aims to exploit the terroir effect to identify the most suitable varieties for each agroecological zone and meet the needs of industry players including producers and ginners. The experiment was conducted in 2011-2012 on Angaradébou sites, Okpara, Savalou and Ketou respectively representing the zones 1 (Alibori / Atakora); 2 (Borgou / Donga); 3 (Hills) and 4 (Zou / Ouemé Plateau / Mono-Couffo). The adopted experimental device is a Fisher block with four replicate and eight treatments or varieties H 279-1 in extension witness. Other varieties include E 944-2; E 956-2; H 769-5; H 782-3; I 875-3; K 768-3 and K 787-2.The measured parameters are the earliness of production, seed cotton yield in the field, the weight of 100 seeds and the fiber ginning outturn. Data analysis revealed significant differences between and inside sites for most measured parameters. The results showed that varieties E 956-2 (1983.85 kg / ha), H 769-5 (1820.49 kg / ha), K 768-3 (1735.42 kg / ha) and H 782-3 (1533.59 kg / ha) in terms of seed cotton yield in the field and compared their performance to shattering were the best respectively in zones 1, 2, 3 and 4.

scholarly journals Effect of Fertilizer Application on Soil Properties and Yield of Sesame (sesamum indicum l.) Varieties in Southern Guinea and Sudan Savanna Agro-Ecological Zones of Nigeria

2021 ◽  
pp. 89-108
Author(s):  
Usman M. ◽  
Ali A. ◽  
Olatunji O.
Keyword(s):  
Soil Properties ◽  
Fertilizer Application ◽  
Soil Samples ◽  
Improved Varieties ◽  
Ecological Zones ◽  
Local Variety ◽  
Significant Difference ◽  
Cropping Seasons ◽  
Sudan Savanna ◽  
Agro Ecological Zones

Field experiments were carried out in 2018 and 2019 cropping seasons to determine the effect of fertilizer application on soil properties and yield of sesame varieties in Southern Guinea and Sudan Savanna Agro-ecological Zones of Nigeria. Treatments consisted of three varieties of sesame (Jigida, NCRIBEN-01M and NCRIBEN-032) and four levels of NPK 15:15:15 fertilizer (0, 50,100 and 150 kg ha-1). Treatments were laid out in a randomized complete block design (RCBD) and replicated thrice. Prior to planting, surface (0-15 cm) soil samples were collected from eight points and bulked; post-harvest composite soil samples were also collected on the basis of treatments. All soil samples were analyzed using standard analytical procedures. Data on yield parameters collected include number of capsules per plant, number of seeds per capsule, length of capsule (cm), 1000 capsule weight (g), 1000 seeds weight (g) and seed yield (t ha-1). The crop data generated from the study were subjected to Analysis of Variance (ANOVA) using Genstat Release 10.3 DE after which significant means were separated using Least Significant Difference (LSD) at 5 % level of probability. Results indicated that the soils of both locations were inherently poor in essential plant nutrients. The improved varieties (NCRIBEN-01M and NCRIBEN-032) performed better than the local variety in terms of yields in both cropping seasons. Sesame yield increased with increase in fertilizer application rates up to 150 kg ha-1. The effect of varieties on soil properties did not differ significantly however, the improved varieties left lower essential nutrients in soil when compared with the local variety. Fertilizer application at 150 kg ha-1 favoured the retention of organic matter as well as other essential nutrient elements in soil. Location effect showed that the Potiskum soil had more nutrients than that of Makurdi. For sustainable sesame production and maintenance of soil fertility in both locations, application of 150 kg ha-1 of NPK 15:15:15 to sesame fields is recommended.

scholarly journals Factors Influencing Preferences and Adoption of Improved Groundnut Varieties among Farmers in Tanzania

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1271
Author(s):  
Serapius Mwalongo ◽  
Essegbemon Akpo ◽  
Gerald Alex Lukurugu ◽  
Geoffrey Muricho ◽  
Ronnie Vernooy ◽  
...  
Keyword(s):  
Crop Production ◽  
Agricultural Research ◽  
Secondary Data ◽  
Policy Support ◽  
Probit Regression ◽  
Improved Varieties ◽  
Ecological Zones ◽  
Female Farmers ◽  
And Gender ◽  
Agro Ecological Zones

Access and use of seed of improved varieties of groundnut among farmers can improve farmers’ livelihoods and contribute to the potential of crop production in Tanzania. This paper analyzes factors underpinning the adoption of improved groundnut varieties among farmers to pave the way for upscaling quality seed used for increased production and commodity business in farming communities. A four-stage stratified sampling was used to collect data from 300 groundnut farmers in seven agro-ecological zones through individual interviews. Secondary data were collected from the literature and the Tanzania Agricultural Research Institute at Naliendele centre (TARI–Naliendele). Descriptive statistics and Probit regression model were used for data analysis. The empirical results showed that Johari 1985, Pendo 1998, Naliendele 2009, Mnanje 2009, Mangaka 2009 and Nachi 2015, are the main six improved groundnut varieties used by farmers, with Pendo 1998 having the highest adoption rate (17.1%). In the grain market, four varieties, namely Pendo 1998, Mnanje 2009, Nachi 2015 and Johari 1985, were observed to be highly preferred by grain off-takers. Furthermore, among the adopted improved varieties, Nachi 2015, is observed to be the most consistent high yielding variety, ranging from 1100 kg/ha to 1500 kg/ha in all agro-ecological zones. A farmer’s decision to adopt new varieties is affected by age and gender, farmer group membership, availability of improved seed and seed cost. Overall, male farmers are more likely to adopt improved varieties of groundnut than female farmers. The implications of these findings are also discussed, in particular in the area of policy support.

scholarly journals Management of Chickpea Seedling Diseases Through Soil Amendment with Tricho-Compost

2014 ◽  
Vol 3 (2) ◽  
pp. 73-79
Author(s):  
Mohammed I. Faruk ◽  
Muhammad L. Rahman ◽  
Muhammad N. Islam ◽  
Muhammad M. Rahman ◽  
Muhammad A. Rahman
Keyword(s):  
Soil Amendment ◽  
Agricultural Research ◽  
Sclerotium Rolfsii ◽  
Cow Dung ◽  
Research Station ◽  
Seedling Mortality ◽  
Agricultural Research Institute ◽  
Ecological Zones ◽  
Pot Culture ◽  
Agro Ecological Zones

Performance of different Tricho-inocula (Trichoderma harzianum inocula), Tricho-compost (T. harzianum compost) and Provax 200 WP (Carboxin + Thiram group fungicide) for controlling seedling mortality of chickpea was investigated under Sclerotium rolfsii and Fusarium oxysporum f. sp. ciceri inoculated soil in two different agro-ecological zones viz. Bangladesh Agricultural Research Institute (BARI), Gazipur and Pulses Research Station, Madaripur of Bangladesh. Tricho-compost was prepared with a mixed substrate of cow dung, rice husk and poultry refuse colonized by T. harzianum. The seedling mortality of chickpea was significantly reduced by the Tricho-inocula, Tricho-compost and Provax 200 WP where Tricho-compost was found superior with respect to reduction of seedling mortality and accelerating plant growth with increasing grain yield of chickpea under pot culture as well as field conditions in two different agro-ecological zones of Bangladesh

scholarly journals A Nationwide Survey of Tabanidae Fauna of Cameroon

2021 ◽  
Author(s):  
Silas Lendzele Sevidzem ◽  
KOUMBA Aubin Armel ◽  
Geneviève Lydie L. Yao-Acapovi ◽  
Jacques François MAVOUNGOU
Keyword(s):  
Nationwide Survey ◽  
Current Data ◽  
Transmission Risk ◽  
Mechanical Transmission ◽  
Distribution Maps ◽  
Ecological Zones ◽  
The Mean ◽  
Sudan Savanna ◽  
Abundance And Distribution ◽  
Agro Ecological Zones

Abstract Background: Tabanid flies are a neglected group of haematophagous dipterans, yet contains 4400 species, regrouped under 144 genera. They are mechanical vectors of important pathogens, including viruses, bacteria and protozoa of humans, domesticated and wild animals. As it is over 50 years since publication of a preliminary nationwide record of tabanids of Cameroon identified 84 species, updated information is provided.Objective: To provide current data on the species composition, abundance and distribution of Tabanidae of Cameroon in the 5 main agro-ecological zones (AEZs).Methods: From 2015-2017, a systematic entomological prospection using Nzi, Vavoua, Biconical and Sevi traps (N=106) was conducted in 604 trap-points over 11,448 traps days, in the 5 main AEZs of Cameroon.Results: A total of 25,280 tabanid specimens were collected, identifying 25 species with 8 not previously documented in Cameroon, including: Tabanus Latipes Macquart, 1838 (1 ♀), Tabanus ricardae Surcouf, 1906 (1 ♀), Tabanus fasciatus Fabricus, 1775 (32 ♀♀, 6♂♂), Haematopota pluvialis Linnaeus, 1758 (18 ♀♀), Haematopota decora Walker, 1850 (19 ♀♀, 3 ♂♂), Haematopota nigripennis Austen, 1914 (18 ♀♀), C. distinctipennis Austen, 1906 (47 ♀♀, 5 ♂♂) and Ancala fasciata Fabricus, 1977 (34 ♀♀, 7 ♂♂). The distribution maps of the newly identified tabanids differed between AEZs, with most from the Guinean savanna. The highest Tabanidae apparent density (ADT) was recorded in the Sudan savanna region and the mean apparent densities of species with type-localities was statistically significantly different (Student t-test=2.519, df=24, P=0.019). The highest species diversity was found in the rain forest.Conclusions: This study increased the list of Tabanidae recorded in Cameroon from 84 species in the preliminary record to 92 species, with most of the newly identified species occurring in the Guinean savanna AEZ. The high diversity and abundance of Tabanidae in the livestock/wildlife interface areas of the rain forests and Sudan savanna AEZs respectively, suggests risk of mechanical transmission risk of pathogens. Investigations of the microbiota within the Tabanidae in the different AEZs to define their role as disease vectors are proposed.

scholarly journals Impact of Bio-Fertilizer or Nutrient Solution on Spinach (Spinacea oleracea) Growth and Yield in Some Province Soils of P.R. China

2018 ◽  
Vol 51 (2) ◽  
pp. 43-52 ◽  
Author(s):  
P.O. Ogbaji ◽  
J. Li ◽  
X. Xue ◽  
M.H. Shahrajabian ◽  
E.A. Egrinya
Keyword(s):  
Physicochemical Properties ◽  
Plant Height ◽  
Nutrient Solution ◽  
Growth Yield ◽  
Growth And Yield ◽  
Agronomic Characters ◽  
Ecological Zones ◽  
Spinacea Oleracea ◽  
Plant Emergence ◽  
Agro Ecological Zones

Abstract A study was conducted to assess the effects of a bio-fertilizer and an inorganic fertilizer on growth, yield of spinach vegetable, on four cultivated soils, representing different agro-ecological zones of Chengdu, Hunan, Xiaotangshan and Shaanxi. Three replicates soil samples mixed with bio-fertilizer 100 g per pot and nutrient solution (MgSO4, Ca(NO)2, KNO3) 633 ml based on container volume. Spinach seeded directly ten per pot, thinned to five watered to plant water requirement until maturity. RCBD of three replication used, data for growth, yield and other agronomic characters and soil physicochemical properties evaluated. Soil results showed substantial differences in physicochemical properties from the four agro-ecological zones (Ferrod Arenosol, Entisol, Aridisol and Vertisol). Plant emergence percent were Xiaotangshan (74.8%), Chengdu (74.5%), Hunan (72.4%) and Shaanxi (70.7%), plant height at six week, Xiaotangshan (17.8 cm), Hunan (17.1 cm), Shaanxi (16.8 cm) and Chengdu (16.1 cm) the least, number of leaves at six weeks were Xiaotangshan (21), Hunan (19) and (16) Shaanxi, leaf area Hunan (89.5 cm2), Shaanxi (83.7 cm2), Chengdu (79.4 cm2) and Xiaotangshan (78.1 cm2), dry biomass of 4.88, 4.35, 3.83 and 3.03 g obtained for Hunan, Chengdu, Shaanxi and Xiaotangshan, respectively. Percentage plant emergence based on soil layers were 0-25 cm (75.8%), 25-50 cm (75.3%), 50-75 cm (71.6%) and 75-100 cm (69.6%), respectively; highest plant emergence percentage were obtained from top soil layer of Hunan, treated with biofertilizer. Substantial differences were observed for plant height, biomass and other agronomic characters in all the soils. The results show that Hunan soil is the most suitable for cultivation of spinach under biofertilizer treatment, compared to other types. The study underpins the importance soil types and fertilizer evaluation for a sustainable vegetable production in China.

scholarly journals Collection and agro morphological characterization of Algerian accessions of lentil (Lens culinaris)

2018 ◽  
Vol 19 (1) ◽  
pp. 183-193 ◽  
Author(s):  
DJOUHER GAAD ◽  
MERIEM LAOUAR ◽  
AISSA ABDELGUERFI ◽  
FATIMA GABOUN
Keyword(s):  
Lens Culinaris ◽  
Quantitative Traits ◽  
Hierarchical Cluster ◽  
Morphological Characterization ◽  
Ecological Zones ◽  
Morphological Evaluation ◽  
Quantitative Characters ◽  
Arid Conditions ◽  
Agro Ecological Zones

Gaad D, Laouar M, Gaboun F, Abdelguerfi A. 2018. Collection and agro morphological characterization of Algerian accessions of lentil (Lens culinaris). Biodiversitas 19: 183-193. Lentil is one of the important pulse crops in Algeria. The narrow genetic base of local cultivars and the disappearance of many local accessions contribute to the loss of lentil biodiversity. Therefore, collection, characterization and preservation of existing local accessions of lentils are important. Lentil accessions were collected across different agro-ecological zones of Algeria. From 10 regions (Departments), 15 villages were surveyed and 30 accessions were collected. Eighteen local accessions and 26 references collection have been used for agro morphological evaluation. The assessment was performed in two locations, sub-humid and semi-arid conditions, based on 12 quantitative characters. The result of variance analysis shows a significant effect of the interaction genotype x location for six quantitative traits. Three macrosperma Algerian accessions characterized by a high number of pod/plant, number of seed/plant and seed yield/plant were positioned on PCA1. The remaining Algerian accessions were positioned on PCA2 and were characterized by later flowering and maturity with high plant stature and height of the lowest pods. Hierarchical cluster analysis grouped the accessions into five distinct clusters independently of the accessions origins and revealed the distribution of Algerian accessions in all of the groups. This study will help breeders to better select accessions to be used in lentil breeding program.

scholarly journals Correlation, regression and cluster analyses on yield attributes and popping characteristics of popcorn (Zea mays L. everta) in derived savanna and rainforest agro-ecologies of Nigeria

2021 ◽  
Vol 117 (3) ◽  
pp. 1
Author(s):  
Oloruntoba Olatayo OLAKOJO ◽  
Folusho BANKOLE ◽  
Dotun OGUNNIYAN
Keyword(s):  
Grain Yield ◽  
Zea Mays L ◽  
Agronomic Traits ◽  
Stepwise Multiple Regression ◽  
Agronomic Characters ◽  
Breeding Programs ◽  
Yield Attributes ◽  
Derived Savanna ◽  
Ear Height ◽  
The Relationship

<p class="042abstractstekst"><span lang="EN-US">Information on the genetic and agronomic relationship among the crop characters is important for the breeding programs. This study aimed at determining the relationship among grain yield, popping expansion and other agronomic characters in 19 popcorn lines evaluated in replicated trials at two locations. Correlation analysis was carried out to determine the relationship between agronomic traits while multiple stepwise regression analyses was used to determine the contribution of other agronomic traits to grain yield. Results showed that plant and ear heights as well as cob length exhibited positive and significant association with grain yield. Popping volume showed negative and significant association (-0.45**) with grain yield while 100-grain mass had a negative and significant correlation (-0.37**) with popping volume. Stepwise multiple regression analysis showed that ear height, cob length, plant aspect and 100-grain mass contributed a total of 53.66 % to variation in grain yield, with ear height contributing the highest portion (22.51 %). Cluster analysis grouped popcorn lines into four different clusters, where ‘Small Pearl Shaped’ and ‘Popcorn 33-1-Y’ belonged to cluster II and IV, respectively, showing how divergent they are and possible utilization for hybrid formation. Improvement for popcorn should focus on identifying lines with acceptable level of popping volume and improved on their grain yield and yield attributes.</span></p>

scholarly journals A nationwide survey of the tabanid fauna of Cameroon

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Silas L. Sevidzem ◽  
Aubin A. Koumba ◽  
Genevieve L. Yao-Acapovi ◽  
Jacques F. Mavoungou
Keyword(s):  
Nationwide Survey ◽  
Current Data ◽  
Mechanical Transmission ◽  
Distribution Maps ◽  
Ecological Zones ◽  
The Mean ◽  
Sudan Savanna ◽  
Abundance And Distribution ◽  
High Diversity ◽  
Agro Ecological Zones

Abstract Background Tabanids are a neglected group of haematophagous dipterans despite containing 4434 species, regrouped in > 144 genera. They are mechanical vectors of important pathogens, including viruses, bacteria and protozoa of humans and domesticated and wild animals. As it is > 50 years since the publication of a preliminary nationwide record of the tabanids of Cameroon identified 84 species, updated information is needed. The aim of this study was to provide current data on the species composition, abundance and distribution of tabanids in the five main agro-ecological zones (AEZs) of Cameroon. Methods From 2015 to 2017, a systematic entomological study using Nzi, Vavoua, Biconical and Sevi traps (n = 106) was conducted in 604 trapping points over 11,448 trap-days in the five main AEZs of Cameroon. Results A total of 25,280 tabanids belonging to 25 species were collected, including eight species not previously documented in Cameroon, namely Tabanus latipes (1 female), Tabanus ricardae (1 female), Tabanus fasciatus (32 females and 6 males), Haematopota pluvialis (18 females), Haematopota decora (19 females and 3 males), Haematopota nigripennis (18 females), Chrysops distinctipennis (47 females and 5 males) and Ancala fasciata (34 females and 7 males). The distribution maps of the newly identified tabanids differed between AEZs, with most tabanids collected from the Guinean savanna. The highest apparent density of tabanids was recorded in the Sudan Savanna region, and the mean apparent densities of species with sites was statistically significantly different (Student t-test: 2.519, df = 24, P = 0.019). The highest species diversity was found in the rainforest. Conclusions This study increased the list of tabanids recorded in Cameroon from 84 species in the preliminary record to 92 species, with most of the newly identified species occurring in the Guinea Savanna AEZ. The high diversity and abundance of tabanids in the livestock/wildlife interface areas of the rain forests and Sudan Savanna AEZs, respectively, suggest risk of mechanical transmission of pathogens. Investigations of the microbiota of tabanids in the different AEZs to define their role as disease vectors are proposed. Graphical abstract

Sign in / Sign up

Export Citation Format

Share Document