Effects of Sunn hemp (Crotalaria juncea) and Mexican sunflower (Tithonia diversifolia) soil amendments on yields and quality of two indigenous vegetables grown in a nematode-infested field

Amulu, L. U.; Oyedele, D. J.; Adekunle, O. K.

doi:10.1007/s42360-021-00341-3

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…Our earlier study also showed that the incorporations of sun hemp and Mexican sunflower seedlings at 10 or 20 seedlings/plot each significant increase the population of Rhabditis, Mononchus and Dorylaimus spp. in comparison with fallow control plots sown to S. macrocarpon, A. cruentus and T. occidentalis in soils amended with sun hemp and Mexican sunflower 47 . The populations of the free living nematodes might have been stimulated by the organic fertilizers used by the farmers.…”

Section: Discussionmentioning

confidence: 99%

Plant Parasitic Nematodes Associated with Three African Indigenous Vegetables in Southwest Nigeria

Amulu,

Oyedele,

Adekunle

2024

Trends Agric. Sci

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Background and Objective: African indigenous vegetables are rich in nutrients and medicinal properties that are important for health and vitality, but their availability is on the decline partly due to attacks by plant parasitic nematodes, hence field surveys were conducted in 2016 and 2017 to investigate the distribution of plant parasitic nematodes and their interactions with free-living nematodes in fields planted to three African indigenous vegetables in Southwest Nigeria. Materials and Methods: A total of 180 soil samples were taken from 180 farms in all Local Government Areas (LGAs) visited in the four States in Southwest Nigeria. Samples were taken from three vegetable fields in all the LGAs visited. Nematodes were extracted from 200 mL sub-samples; the nematodes were counted and identified under a compound microscope using a pictorial guide. Results: The results showed that 16 genera of plant parasitic nematodes were found associated with Amaranthus cruentus, Solanum macrocarpon and Telfairia occidentalis. Meloidogyne, Helicotylenchus, Rotylenchulus, Xiphinema, Pratylenchus and Hoplolaimus were the most abundant nematode species encountered in vegetable fields in the study areas. The correlation analysis shows an antagonistic relationship between free-living nematodes and plant parasitic nematodes. Conclusion: There is a need to cultivate vegetable crops to suppress the populations of plant parasitic nematodes in Southwest Nigeria.

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Section: Discussionmentioning

confidence: 99%

Plant Parasitic Nematodes Associated with Three African Indigenous Vegetables in Southwest Nigeria

Amulu,

Oyedele,

Adekunle

2024

Trends Agric. Sci

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“…Brazil boasts one of the planet's richest biodiversities, making it a significant source of natural, plant-based products. A variety of plant species have yielded crude aqueous extracts (ACEs) that exhibit noteworthy nematicidal effectiveness against M. incognita egg hatchability and juvenile mortality [23][24][25] Notably, several species within the Fabaceae family, including those within the genus Arachis, have shown promise as potential sources of nematotoxic compounds [26,27].…”

Section: Introductionmentioning

confidence: 99%

Prospection of Nematotoxic Aqueous Seeds Extracts Derived from the Preserved Arachis (Fabaceae) Germplasm Bank

Nascimento,

Brauna,

Ferreira

et al. 2023

IJPB

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Plant-parasitic nematodes (PPN) are the most damaging plant pathogens all over the world. Root-knot nematodes (RKNs), considered the most important phytonematodes globally, cause significant agricultural losses. Despite the availability of various strategies to manage these pathogenic agents, excessive use of nematicides poses a threat to human health and the environment. Compounds derived from plant sources are proposed as an alternative to new biocides, potentially offering advantages over synthetic components. Several species within the Fabaceae family, including those within the Arachis genus, have demonstrated potential as sources of nematotoxic compounds. As part of a research program aimed at exploring bioactive compounds and valorizing germplasm banks, this study evaluated the nematicidal and nematostatic effects of aqueous crude extracts (ACEs) obtained from nine Arachis species sourced from the Embrapa Active Germplasm Bank against M. incognita’s second-stage juveniles (J2). The results indicate that Arachis stenosperma (ACE1) has promising nematocidal potential, with effectiveness exceeding 95% on dead nematodes for doses above 0.5 mg/mL. ACE1 has also demonstrated thermostability and lower harmful effects on bovine cells. This research provides a fresh outlook on the promising use of preserved germplasms to enhance Germplasm Storage Bank’s value, given the underexplored potential of these biological assets.

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“…However, there is a paucity of information on its in-situ interactions with other plants. Mexi can sunflower, an annual plant from the Aste raceae family, improves soil fertility [13] and controls nematodes [17,Fig. 1c]. The pest attributes of catnip and Mexican sunflower qualify them as weeds.…”

Section: Introductionmentioning

confidence: 99%

Effects of catnip (Nepeta cataria L.) and Mexican sunflower (Tithonia diversifolia L.) density on growth, yield, and proximate composition of jute mallow (Corchorus olitorius L.)

Ayodele

Aluko

Adegbaju

2021

PVSandP

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Purpose. Jute mallow (Corchorus olitorius L.) is a mucilaginous vegetable and fiber crop cultivated in the tropics, where catnip (Nepeta cataria L.) and Mexican sunflower (Tithonia diversifolia L.) are common weeds. Hence, the study investigated the growth, yield, and nutrient level of jute mallow in weed-free, catnip, and Mexican sunflower environments. Methods. The study involved two screen-house experiments in a Completely Randomized Design (CRD) with six replications. The treatments were 0 (control), 2, 4, 6, 8, and 10 weed plants per pot in both experiments. These are 0, 100, 200, 300, 400, and 500 weed count per square meter equivalent, based on the surface area of the pots used. Mexican sunflower and catnip plants interacted with jute plants in the first and second experiments, respectively. Growth parameters of jute mallow were recorded weekly from 5 to 8 weeks after sowing (WAS), and harvesting was done at 8 WAS. The proximate composition of jute was evaluated using standard procedures outlined by AOAC. The data collected were subjected to analysis of variance (ANOVA), and means were separated using Duncan Multiple Range Test (DMRT) at P < 0.05. Results. Catnip and Mexican sunflower negatively impacted the morphological features of jute mallow from 100 plants per square meter upwards. Catnip and Mexican sunflower, at 300 and 100–500 plants per square meter, respectively, reduced the dry weight of jute mallow. The crude protein content of jute mallow was also lessened by Mexican sunflower at some point. Conclusions. The study recommends that the density of catnip and Mexican sunflower plants interacting with jute mallow should be maintained below 100 plants per square meter to prevent yield loss.

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Effects of Sunn hemp (Crotalaria juncea) and Mexican sunflower (Tithonia diversifolia) soil amendments on yields and quality of two indigenous vegetables grown in a nematode-infested field

Cited by 6 publications

References 14 publications

Plant Parasitic Nematodes Associated with Three African Indigenous Vegetables in Southwest Nigeria

Plant Parasitic Nematodes Associated with Three African Indigenous Vegetables in Southwest Nigeria

Prospection of Nematotoxic Aqueous Seeds Extracts Derived from the Preserved Arachis (Fabaceae) Germplasm Bank

Effects of catnip (Nepeta cataria L.) and Mexican sunflower (Tithonia diversifolia L.) density on growth, yield, and proximate composition of jute mallow (Corchorus olitorius L.)

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