Effect of variety and nutrient on insect pest infestation of &lt;i&gt;Amaranthus spp&lt;/i&gt;

Ogedegbe, A. B. O.; Ezeh, Anthony

doi:10.4314/jasem.v19i2.11

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Nigeria is the largest producer and consumer of amaranth [4] and its production has been plagued with an array of factors including incidence of insect pest, decreasing soil fertility and quantity of manure required for optimum crop productivity [5] [6]. The low fertility status of the soil necessitated the need for external fertilizer input.…”

Section: Introductionmentioning

confidence: 99%

Effect of compost, cow dung and NPK 15-15-15 fertilizer on growth and yield performance of Amaranth (Amaranthus hybridus)

Sanni¹

2016

Int J of Adv in Sci Res

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Nigerian soils are generally low in fertility and enhanced crop yield is only possible through external use of organic and inorganic fertilizers. The present study was carried out under field condition at Teaching and Research Farms, Lagos State Polytechnic, Ikorodu to evaluate effects of compost, cow dung and NPK 15-15-15 fertilizer amendments on the growth and yield performances of Amaranthus hybridus. The obtained results indicated that all treatments significantly achieved an increment in morphological parameters (numbers of leaves stem girth, leaf area and plant height) and fresh weight yield comparing with the control. The best results in terms of these characters were obtained in the following order Cow dung > compost > NPK 15-15-15 and control. Post soil analysis shows that all the treatments reduced the soil pH from 6.20 to a range between 5.58-5.68 and available phosphorus, magnesium, organic carbon, total nitrogen and CEC increased significantly compared with control plot. Results suggest that the use of cow dung and composts has potential to improve the growth and yield of amaranth and improves the soil physiochemical properties in the study area.

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Section: Introductionmentioning

confidence: 99%

Effect of compost, cow dung and NPK 15-15-15 fertilizer on growth and yield performance of Amaranth (Amaranthus hybridus)

Sanni¹

2016

Int J of Adv in Sci Res

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“…Prior to this study, S. derogata was documented in literature to be a major pest of okra, cotton, amaranth or eggplant in south western (Okunlola and Ofuya, 2010;Aderoluet al, 2013;Okunlola and Akinrinnola, 2014), south eastern (Anioke, 1998;Ogedegbe and Ezeh, 2015;Ezehet al, 2015), south southern (Ukehet al, 2007;Ogbaluet al, 2015), north eastern (Anaso and Lale,2000) and north western (Yahayaet al, 2012(Yahayaet al, , 2013 Nigeria. Present results on plant infestation and larval abundance indicates that the pest is also an important defoliator of roselle in parts of north eastern Nigeria.…”

Section: Discussionmentioning

confidence: 99%

Preliminary Survey of Parasitism of Leaf Roller, Sylepta derogata (Fabricius) (Lepidoptera: Pyralidae) in Roselle (Hibiscus sabdariffa L. (Malvales: Malvaceae) in Maiduguri, Nigeria

Mailafiya

MARI

YAKUBU³

2022

JAEESS

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This study was carried out in Maiduguri in north eastern Nigeria during the cropping seasons of 2018 and 2019 to determine the seasonal infestation rate, larval abundance and parasitism of Syleptaderogata (Fabricius) (Lepidoptera: Pyralidae) in roselle, Hibiscus sabdariffaL. Data collection was from 30 farmer fields planted with roselle plants. Data on plant infestation, pest abundance and parasitism were analyzed using Kruskal-Wallis test. Mean percent plant infestation by S. derogataper farmers’ field ranged from 84% in 2019 to 88% in 2018, and was not significantly different between years. Mean number of S. derogata larvae per farmers’ field was significantly higher in 2018 (83) than in 2019 (69). In both years, parasitization by microgastrinae was high (97%-98%), whilst that by Bracon sp. was low (2%-3%). Mean total larval parasitism per farmers’ field significantly varied between years, and was particularly higher (18%) in 2018 than in 2019 (5%). In conclusion, results indicate that S. derogata is seasonally responsible for heavy infestation of roselle plants in parts of north eastern Nigeria. Microgastrinae accounts for a high proportion of host parasitization, whilst that by Bracon sp. is negligible. Total larval parasitism is seasonally low, and insufficient to control this pest in roselle grown in this locality.

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“…Monocultural practices provide a fertile environment for insect pest outbreaks [12] compared to polyculture that plays a vital role in reducing pest infestation [11]. In addition, scientists have investigated various crop ecosystems that may affect pest population, such as the effect of tree size [13], tree-planting patterns [14], habitat characteristics, such as host plants presence, phenology, landform index and chemical applications [15], crop ages [16,17] and field size. The behaviour of insect infestation has been found to vary spatially within the same field.…”

Section: Introductionmentioning

confidence: 99%

Ommatissus lybicus Infestation in Relation to Spatial Characteristics of Date Palm Plantations in Oman

et al. 2019

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The agricultural ecosystem and its interaction with the outside environment plays a major role in the population of herbivores. The infestation of the Dubas bug, Ommatissus lybicus, has shown a spatial and temporal variation among different date palm plantations in Oman. This study focused on the relationship of infestation with date palm cultivation environments. The infestation and some selected environmental factors were evaluated in 20 locations for four consecutive infestation seasons over two years. Ordinary least squares (OLS) regression was used to identify the significant factors and the global relationship. Geographically weighted regression (GWR) was used to determine the spatial relationship. The results showed that GWR had better prediction than OLS. The model explained 61% of the infestation variation in the studied locations. The most significant coefficient was the tree planting pattern, the trees planted in uneven rows and columns (irregular pattern) had a positive effect; the infestation increased as the irregularity increased due to an increase in tree density. This reduced the interaction of harsh outside weather with the date palm plantation microclimate. The proportion of side growing area had a negative effect on insect population; as the percentage of side growing area increased as the infestation decreased, assuming the side growing crops hosted natural enemies. The study concluded that the variation of spatial and temporal infestation was primarily due to the variation of the cultural practices and spatial environment of the date palm plantations.

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Effect of variety and nutrient on insect pest infestation of <i>Amaranthus spp</i>

Cited by 4 publications

References 3 publications

Effect of compost, cow dung and NPK 15-15-15 fertilizer on growth and yield performance of Amaranth (Amaranthus hybridus)

Effect of compost, cow dung and NPK 15-15-15 fertilizer on growth and yield performance of Amaranth (Amaranthus hybridus)

Preliminary Survey of Parasitism of Leaf Roller, Sylepta derogata (Fabricius) (Lepidoptera: Pyralidae) in Roselle (Hibiscus sabdariffa L. (Malvales: Malvaceae) in Maiduguri, Nigeria

Ommatissus lybicus Infestation in Relation to Spatial Characteristics of Date Palm Plantations in Oman

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