scholarly journals Use of a Resistant Pepper as a Rotational Crop to Manage Southern Root-knot Nematode

HortScience ◽  
1998 ◽  
Vol 33 (4) ◽  
pp. 716-718 ◽  
Author(s):  
J.A. Thies ◽  
J.D. Mueller ◽  
R.L. Fery
Keyword(s):  
Meloidogyne Incognita ◽  
Block Design ◽  
Root Knot Nematode ◽  
Experimental Site ◽  
Previous Crop ◽  
Randomized Complete Block Design ◽  
The Mean ◽  
Rotational Crop ◽  
Rotation Crop ◽  
Southern Root Knot Nematode

A 3-year field study was conducted at Blackville, S.C., to evaluate the potential of using resistant pepper (Capsicum annuum L.) cultivars as a rotation crop for managing the southern root-knot nematode [Meloidogyne incognita (Kofoid and White) Chitwood]. The experiment was a split-plot with main plots arranged in a randomized complete-block design. In 1993, the entire experimental site was infested with M. incognita by inoculating a planting of susceptible PA-136 cayenne pepper with eggs of M. incognita race 3. In 1994, the main plots were planted to either highly resistant `Carolina Cayenne' or its susceptible sibling line PA-136. In 1995, `Carolina Cayenne' and the susceptible bell cultivars California Wonder and Keystone Resistant Giant were grown as subplots in each of the original main plots. `Carolina Cayenne' plants were unaffected by the previous crop. Previous cropping history, however, had a significant impact on the performance of the bell cultivars; the mean galling response was less (P < 0.01) and the yield was 2.8 times greater (P < 0.01) in the main plots previously cropped with `Carolina Cayenne' than in those previously cropped with PA-136. These results suggest that resistant pepper cultivars have considerable merit as a rotation crop for managing M. incognita infestations in soils used for growing high-value vegetables.

scholarly journals Evaluation of Nematicidal Activity of Fluensulfone against Meloidogyne incognita in Bell Pepper Crop

2020 ◽  
pp. 52-59
Author(s):  
José Alonso Calvo- Araya ◽  
Nery Zapata- Montes
Keyword(s):  
Meloidogyne Incognita ◽  
Block Design ◽  
Nematicidal Activity ◽  
Bell Pepper ◽  
Single Application ◽  
Root Knot Nematode ◽  
Horticultural Crops ◽  
Final Population ◽  
Randomized Complete Block Design ◽  
Set Up

The evaluation of nematicidal activity of the non- fumigant nematicide (fluensulfone) was evaluated for the control of the root-knot nematode Meloidogyne incognita in bell pepper crop (Capsicum annuum L.) under field conditions. The experiment was set up under a randomized complete block design with four replications. Six treatments were assessed for control of M. incognita: four doses of fluensulfone, one of the nematicide oxamyl and a control without application of nematicides. Ten days before transplanting, nematicides were applied in a single application via irrigation systems. The lowest final population densities of M. incognita in bell pepper crop were recorded in plots treated with fluensulfone at the dose of 2.75 L.ha-1, with an average of 25 juveniles. The higher percentage of efficacy was obtained with the application of fluensulfone at a dose of 2.75 L.ha-1. Fluensulfone showed a more efficient nematicidal activity as compared with oxamyl, which is the most used nematicide in horticultural crops in Mexico. Our results indicated that fluensulfone can be used as an alternative nematicide for the control of M. incognita in horticultural crops.

scholarly journals Genetic parameters of resistance to Meloidogyne incognita in melon

2017 ◽  
Vol 47 (5) ◽  
Author(s):  
Willame dos Santos Candido ◽  
Renata Castoldi ◽  
Lucas da Silva Santos ◽  
Dora Enith Tobar-Tosse ◽  
Pedro Luiz Martins Soares ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Genetic Parameters ◽  
Block Design ◽  
Root Knot Nematode ◽  
Chi Square ◽  
Nematode Reproduction ◽  
Randomized Complete Block Design ◽  
Chi Square Test ◽  
Reproduction Factor ◽  
Six Genes

ABSTRACT: In order to assess the genetic control of resistance in the melon ‘Gaúcho Redondo’ to the root-knot nematode Meloidogyne incognita, an experiment was conducted in a randomized complete block design with three blocks and six treatments using the parental lines ‘Gaúcho Redondo’ (P1 resistant) and JAB 20 (P2 susceptible), as well as F1, F2, and backcross generations (RC1P1 and RC1P2). Seventy days after inoculation, individual plants were evaluated for resistance using the nematode reproduction factor (RF). The hypothesis of monogenic inheritance was rejected by the chi-square test (χ2), and results indicated that resistance is controlled by more than one gene locus, as confirmed by the quantitative analysis that revealed the presence of six genes.

Evaluation of Four Tomato Genotypes Resistance to Root-Knot Nematode

2018 ◽  
Vol 3 (1) ◽  
pp. 53-57
Author(s):  
Nask Mohamad Faraj ◽  
Rebin A. Qadir
Keyword(s):  
Statistical Analysis ◽  
Environmental Pollution ◽  
Meloidogyne Incognita ◽  
Human Life ◽  
Block Design ◽  
Root Knot Nematode ◽  
Tomato Production ◽  
Randomized Complete Block Design ◽  
Tomato Cultivars ◽  
Tomato Genotypes

The root-knot nematode incited by Meloidogyne incognita is one of the top diseases affecting tomato production worldwide. Nematicides can be effectively used to control the disease, but is costly and harmful to human life and environmental pollution. Alternatively resistant cultivars can be used inexpensive and eco-friendly.  Resistance evaluation of five tomato cultivars (Red Rock, King Rock, Presto F1, Super Queen and Super Regina) were tested using randomized complete block design with five replications and three nematode inoculums (0, 500 and 1500 egg/second juvenile per pot). The statistical analysis gave significant differences among the genotypes, nematode densities level with their interactions. Among genotypes, Red Rock recorded significantly highest plant height (57.0) cm, Presto F1 (37.8) cm, King Rock (35.2) cm, Super Regina (30.1) cm and Super queen showed lowest (25.4) cm. As an alternative for managing the nematodes, further experiments are required in the field for applying plant resistances.

scholarly journals A Novel Nematicide for the Control of Root-Knot Nematodes in Tomato Crop

2017 ◽  
Vol 6 (2) ◽  
pp. 35-40
Author(s):  
José A. Calvo-Araya
Keyword(s):  
Meloidogyne Incognita ◽  
Irrigation System ◽  
Block Design ◽  
Single Application ◽  
Root Knot Nematode ◽  
Tomato Crop ◽  
Solanum Lycopersicum L ◽  
Final Population ◽  
Randomized Complete Block Design ◽  
Set Up

A novel nematicide (fluensulfone) was evaluated for control of the root-knot nematode Meloidogyne incognita in tomato crop (Solanum lycopersicum L.) under field conditions. The experiment was set up in a randomized complete block design with four replicates. Six treatments were assessed for control of M. incognita: four doses of fluensulfone, one dose of the nematicide oxamyl, and a control with no application of nematicides. Ten days before transplanting, nematicides were applied in a single application via an irrigation system. The lowest final population densities of M. incognita in tomato crop were recorded in plots treated with fluensulfone at the dose of 2.75 L·ha-1, with an average of 26 juveniles. The higher percentage of efficacy was obtained with the application of fluensulfone at a dose of 2.5 L·ha-1. Fluensulfone exerted a more efficient nematicidal activity as compared with oxamyl, which is the most used nematicide in crops in Mexico. Our results indicated that fluensulfone can be used as an alternative nematicide for the control of M. incognita in tomato crop and other crops.

scholarly journals Morpho-physiological Traits and Mineral Composition on Local Maize Population Growing in Agro Ecological Conditions in Kosova

2013 ◽  
Vol 5 (2) ◽  
pp. 232-237
Author(s):  
Sali ALIU ◽  
Imer RUSINOVCI ◽  
Shukri FETAHU ◽  
Kemajl BISILIMI
Keyword(s):  
Block Design ◽  
Physiological Traits ◽  
Cellulose Content ◽  
Maize Breeding ◽  
Maize Population ◽  
Maize Populations ◽  
Randomized Complete Block Design ◽  
Morphological And Physiological Traits ◽  
The Mean ◽  
Field And Laboratory Conditions

Twelve local maize populations were evaluated at the experimental farm, University of Prishtina, Kosovo. The study was conducted to assess the magnitude of genetic variation in local maize populations for different morphological-physiological and chemical composition under field and laboratory conditions. Randomized complete block design (RCBD) with three replications was used for laying out the experiment. The results showed that there were significant differences for most morphological and physiological traits under study. The mean grain yield of all populations was 102.96 g plant-1. The protein and oil contents ranged between 11.53 to 9.43% and 4.23 to 4.87% respectively. The cellulose content varied from 6.03 to 6.37%. There were also big differences regarding phenotypic correlations. The present study revealed considerable amount of diversity among the local maize populations which could be manipulated for further improvement in maize breeding.

scholarly journals Controlling the southern root-knot nematode (Meloidogyne incognita Chitwood) with grafted and resistant pepper varieties

2010 ◽  
Vol 16 (2) ◽  
Author(s):  
Z. Mándoki
Keyword(s):  
Meloidogyne Incognita ◽  
Control Method ◽  
Environmentally Friendly ◽  
Bell Pepper ◽  
N Gene ◽  
Root Knot Nematode ◽  
Resistant Varieties ◽  
Environmentally Safe ◽  
Resistant Rootstock ◽  
Southern Root Knot Nematode

Newly bred resistant bell pepper varieties and those grafted onto resistant rootstock s were tested in soil severely infested with southern root-knot nematode [Meloidogy11e incognita (Kofoid and White) Chitwood] in unheated plastic house and compared to varieties on their own roots, in order to evaluate the efficiency of this environmentally friendly control method. 'Cinema F I ' carrying the N gene yielded significantly more than the two susceptible varieties. Varieties grafted onto resistant rootstocks outyielded those on their own roots although to different extent, which was not always significant. At the end of the vegetat ion period the roots of the rootstocks were undamaged and the roots of some resistant varieties were slightly infected. whereas the roots of susceptible varieties were severely damaged. According to our result  . both the use of resistant varieties and grafted plants offer an effective and environmentally safe way of controlling M. incognita.

scholarly journals Effect of Seeding Rate On Growth And Yield Of Okra (Abelmoschus Esculantus) In Zuru Northern Guinea Savanna Of Nigeria

2018 ◽  
Vol 6 (02) ◽  
Author(s):  
Yohanna J, A. ◽  
Muhammad A, M.
Keyword(s):  
Block Design ◽  
Total Yield ◽  
Growth And Yield ◽  
Land Resource ◽  
Seeding Rate ◽  
Randomized Complete Block Design ◽  
Number Of Leaves ◽  
Resource Space ◽  
Plant Stand ◽  
The Mean

Field experiment was carried out during 2010 rainy season to find the effect of seeding rate on the growth and yield of okra (Abelmuschus esculentus) in Zuru Northern Guinea Savannah. Zuru is located in Zuru Local government area of Kebbi State (Latitude 11o 251 to 11o 551 North and Longitude 4o 51 to 5o 251 East of the equator). The experiment consisted of three treatments that is planting okra at one plant per stand (S1), two plants per stand (S2) and three plants per stand (S3). The experiment was laid out in randomized complete block design (RCBD) and the treatments replicated three time. The result of the experiment has shown that plant height and number of leaves/plant at 3, 6 and 9 weeks after planting (    WAP) were significantly influenced by seeding rate (P<0.05). At 3, 6 and 9 WAP tallest plants were obtained from okra plants planted at three plants/stand (27.83, 54.0 and 77.0cm) respectively followed by okra planted at two plant/stand (24.77, 50.67 and 74.33 leave/plant respectively ). However, more number of leaves/plant were obtained from okra plant at one plant/stand (9.67, 24.67 and 48.0 leaves/plant respectively) followed by okra planted at two plants/stand (8.33, 18.33 and 36.33 leaves/plant respectively). Seeding rate had significant influence on time of 50 percent flowering with one plant/stand first attaining 50 percent flowering stage just within 36.33 days followed by okra planted at two plants/stand (38 days). The mean fresh fruit yield of okra was also significantly influenced by seeding rate with the highest yield of fresh fruits obtained from three plants/stand (83.34/ha) followed by okra planted at two plants/stand (55.56/ha). However, the result of the findings recommends that, okra should be planted at two plants/stand for medium sized and marketable okra fresh fruits since at three plants/stand leads to the production of undersized fresh fruits which do not often attract customers. At one plant/stand, there seemed to be early fruiting and bigger sized fresh fruits but low total yield due to underutilization of land resource/space. Planting at one plant/stand should therefore be avoided

scholarly journals Growth Performance of Lettuce Using Fermented Products as Organic Fertilizers

2019 ◽  
Vol 1 (3) ◽  
pp. 65
Author(s):  
Kareen Lynn E. Negado
Keyword(s):  
Growth Performance ◽  
Block Design ◽  
Organic Fertilizers ◽  
Control Groups ◽  
Lettuce Seeds ◽  
Randomized Complete Block Design ◽  
Number Of Leaves ◽  
The Mean ◽  
And Control ◽  
Fermented Products

This study evaluates the growth performance of lettuce (Lactuca sativa L.) utilizing various fermented products as organic fertilizers. Growth performance is determined through the plant’s weight and leaves and significant differences in growth among various treatments: (a) fish trash, (b) scrap seaweeds, (c) kangkong, and control groups urea (positive) and water (negative) was also determined. Kangkong leaves are fermented for 10 days, fish trash for 14 days and 1 month for seaweeds. Lettuce seeds are sown before transplanting (15 days after germination) into pots and placed in raised beds. Randomized complete block design is utilized in the experiment. Growth performance is measured through the number of leaves 10, 20, and 30 days after transplant and mass of plant upon harvest. After 30 days, the lettuce was harvested. Based on the findings, the soil and fermented products are acidic and the needed organic matter for optimum growth of lettuce are not sufficient as well as some nutrients of the fermented products. Among the organic fertilizers, kangkong at 30 ml performs best in terms of the growth performance of lettuce. Urea performs best in terms of the mass upon harvest. Significant differences exist in the mean number of leaves of lettuce treated with various amounts of organic fertilizers with the plants that receive urea. Lettuce produce more number of leaves and with the highest mass upon harvest when treated with urea compared with organic fertilizers applied after 30 days from transplant. Keywords: fermented kangkong; fish trash; growth performance; lettuce; scrap seaweeds

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