scholarly journals INTEGRATED MANAGEMENT OF ROOT-KNOT NEMATODE (MELOIDOGYNE SPP.) IN CUCUMBER (CUCUMIS SATIVUS L.) AND ITS EFFECT ON NEMATODE POPULATION DENSITY, PLANT GROWTH AND YIELD IN SULAIMANI GOVERNORATE, KURDISTAN, IRAQ

2020 ◽  
Vol 18 (3) ◽  
pp. 4709-4741
Author(s):  
J.H.S. ISMAEL ◽  
A.A. MAHMOOD
Author(s):  
Paula Juliana Grotto Débia ◽  
Beatriz Cervejeira Bolanho ◽  
Claudia Regina Dias-Arieira

Abstract Background The root-knot nematode Meloidogyne javanica can infect beetroots, causing extensive damage to this food crop. As chemical and genetic control tactics have shown limited efficacy, new strategies are needed to improve the integrated management of this parasite. This study assessed the influence of potential defence elicitors and M. javanica infection on the mineral composition of beetroot. Plants were treated with acibenzolar-S-methyl (ASM), citrus biomass, or a mannanoligosaccharide-based product (MOS) and inoculated with 1000 eggs and second-stage juveniles of M. javanica. At 60 days after inoculation, beetroot plants were harvested and evaluated for nematode population density, vegetative growth, and mineral content. Results All potential elicitors reduced nematode population density in beetroots (p ≤ 0.10) and improved the vegetative parameters of inoculated plants (p ≤ 0.05), except shoot fresh weight. Some minerals were found to be negatively affected by treatments, particularly calcium, whose levels were consistently lower in treated plants. On the other hand, M. javanica inoculation increased magnesium, iron, manganese, zinc, and copper contents in beetroots. However, the latter mineral (Cu content) of inoculated plants was positively influenced by MOS and ASM. Conclusion Potential elicitor treatments did not improve the mineral composition of beetroot, but were effective in reducing nematode population density. Plants inoculated with M. javanica had higher mineral levels. However, gall formation decreases the commercial value of the crop and might render it unsuitable for commercialisation. M. javanica-infected beetroots may be used for nutrient extraction or sold to food processing industries.


2021 ◽  
Vol 15 (4) ◽  
pp. 1282-1296
Author(s):  
Koffi Bertin Yao ◽  
Kouassi Joseph Kouakou ◽  
Koffi Adjoumani ◽  
Kouadio Laurent Kossonou ◽  
Tanoh Hilaire Kouakou

Cucumber (Cucumis sativus L.) is a plant of great importance for food, agriculture, economy and medicine. This importance explains its high demand, intensified by its cultivation conditions, particularly the growing rarity of fertile land and available water. To contribute to this species yield optimization, the effects of fertilizers type [chemical: NPK (12-22-22) and organic: Agribionate] and a control (C) combined to two watering modes (traditional sprinkler and bottle drip) on plants growth and yield have been studied from sowing to harvest. Plant growth (stem length and diameter at the collar, number of leaves and flowers per plant, leaf area) and yield (fruit weight, diameter and length, yield) were assessed. ANOVA2 tests revealed that fertilization (NPK and agribionate) favored plant growth (respectively 34.20 and 37.32 cm in height against 6.67 cm) and increased yield (7498, 66 and 6600.46 Kg/ha against 1558 Kg/ha) with the largest and heaviest fruits (145.69 and 142.80 g) compared to the control (C) that produced the smallest ones (59.35 g). About watering, the bottle drip mode was more beneficial than traditional sprinkler one for cucumber organ growth and plant yield. The interaction (fertilizer type × watering mode) indicated that the best results were obtained with the Agribionate fertilizer watered with the bottle drip method.


2012 ◽  
Vol 49 (4) ◽  
pp. 259-269 ◽  
Author(s):  
E. Abdel-Dayem ◽  
F. Erriquens ◽  
V. Verrastro ◽  
N. Sasanelli ◽  
D. Mondelli ◽  
...  

AbstractThe fertilizing and nematicidal effects of three organic amendments were evaluated in a pot experiment on melon plants infested by the root-knot nematode Meloidogyne incognita. A soil artificially infested with 4 eggs and juveniles/ ml soil of the nematode was amended with: a) virgin olive pomace (VOP); b) composted olive pomace (COP); c) chicken manure based fertilizer (CM) and d) chicken manure based fertilizer combined with the biological control agent Paecilomyces lilacinus strain 251, brand name BioAct WG (CMB). VOP was applied at doses of 11 (VOP-A), 22 (VOP-B) and 44 t/ha (VOP-C); COP at 4.5 (COP-A), 9 (COP-B) and 18 t/ha (COP-C); CM at 3 t/ha and CMB at 3 t/ha combined with 4 kg/ha of BioAct WG. Untreated soil was used as control. The treatments CM, CMB, VOP-B and COP-B were established on the basis of N requirement of melon plants (120 kg/ha) taking into account soil and amendments N availability. Two weeks later amendment application and nematode inoculation, the soil was poured in 4.8 l clay pots which were arranged in a greenhouse according to a randomized block design with ten replications for each treatment. A one-month old melon seedling (cv. Galia) was transplanted in each pot and organic farming management practices were used during the growing period. At the end of the experiment, 60 days after transplant, plants were uprooted and height, fresh and dry shoot and root weights were recorded. Root gall index, on the roots, caused by the nematode attack, was estimated according to a 0–5 scale. Final nematode population density and reproduction rate were also calculated for each pot. All data were subjected to statistical analysis of variance (ANOVA) and means compared according to Least Significant Difference’s Test. Nematode population and root infestation were significantly suppressed by the addition of all amendments, compared to untreated control. However, CM and CMB resulted in a total more suppressive effect and in a significantly higher plant growth in comparison to all the other treatments. A significant correlation was found between root gall index and eggs and juveniles/g root and final nematode population density. No signifycant correlations were found between nematological parameters or plant growth parameters and amendment doses.


2019 ◽  
Vol 44 (3) ◽  
pp. 427-437
Author(s):  
MI Faruk ◽  
MM Islam ◽  
F Khatun ◽  
MA Hossain ◽  
TK Dey

The field experiment was conducted at Regional Agricultural Research Station (RARS), Hathazari, Chattagram to find out the efficacy of integration of poultry refuse (PR) with stable bleaching powder (SBP) or CaNO3 and Furadan 5G for the management of bacterial wilt (Ralstoniasolanacearum) and root-knot nematode disease (Meloidogyne incognita) of brinjal. Soil was treated with PR @ 3 t/ha 3 weeks before transplanting, stable bleaching powder @ 20 kg/ha during final land preparation and Furadan 5G @ 20 kg/ha on the day of seedlings transplanting while CaNO3 was used as soil drenching 10 days after seedling transplanting. Results showed that integration of poultry refuse with Furadan 5G and stable bleaching powder or CaNO3 reduced root-knot and bacterial wilt diseases and increased plant growth as well as yield of brinjal. The most effective treatment combination was PR + stable bleaching powder + Furadan 5G with early sowing, followed by PR + CaNO3 + Furadan 5G with early sowing for the management of bacterial wilt and root knot nematode diseases and increasing plant growth and yield of brinjal. The technology, poultry refuse+ stable bleaching powder + Furadan 5G was validated at Bangladesh Agricultural Research Institute (BARI), Gazipur, Regional Agricultural Research Station of Jessore, Hathazari and Jamalpur and also at Agricultural Research Station and farmers field at Burirhat, Rangpur and OFRD farm at Alamnagar, Rangpur. The validation trials showed that integration of poultry refuse + stable bleaching powder+ Furadan 5G in early sowing was an effective management package of bacterial wilt and root knot nematode diseases of brinjal which also offered 21.81 to 25.98% higher yield over the conventional practices. Bangladesh J. Agril. Res. 44(3): 427-437, September 2019


Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 722
Author(s):  
Renata Dobosz ◽  
Roman Krawczyk

The northern root-knot nematode, Meloidogyne hapla, is a major pest of many crop species. The objective of the study was to determine how M. hapla population dynamics is affected by two precrops, i.e., Trifolium pratense and Medicago sativa, in three crop durations: one, two and three years of continuous cultivation. Moreover, we set ourselves the task of evaluating the effect of the legume precrop soil on the growth of the succeeding tomato plant (Solanum lycopersicum) and on the nematode population. The experiment was performed outdoors in pots with naturally infected soil. Both precrop species investigated were found to modify the J2 nematode population density in the soil. The galls and nematode females with egg masses were observed on the roots of both studied plant species at the end of each growing season. They appeared to be more abundant on the red clover roots than on those of the alfalfa. The obtained data indicate that the spring soil sampling is more appropriate for the estimation of the M. hapla population density in the red clover precrop soil. The legume precrop soil had a limiting effect on tomato growth and fruit yield. The nematode population negatively influenced tomato growth. The experiment revealed that tomato plants could be planted in alfalfa precrop soil following at least three years of continuous alfalfa cultivation. The same cannot be said of the cultivation of red clover as a precrop for tomatoes.


Nematology ◽  
2005 ◽  
Vol 7 (1) ◽  
pp. 149-157 ◽  
Author(s):  
Shufen Liu ◽  
Senyu Chen

AbstractHirsutella minnesotensis and H. rhossiliensis are endoparasites of nematodes, and their biological control potential against Heterodera glycines when cultured and applied on corn grits has been reported. In this study, the potential of liquid cultures of the two fungi was evaluated in two glasshouse experiments. Both liquid culture at 0.2, 0.4 and 0.8 g of fresh mycelium/300 cm3 soil (per pot) and solid culture at 1% (corn grits: soil, w/w) reduced nematode egg population densities in both autoclaved and unheated soils as compared with soil-only control or corn-grits control. However, the liquid culture at 0.2–0.8 g of mycelium/pot appeared to be more effective in reducing the nematode population than the solid culture of 1%. Hirsutella rhossiliensis resulted in lower nematode population density than H. minnesotensis only in unheated soil in one experiment. The soil heat treatment generally increased the nematode population density but did not affect percentage reduction of the nematode population density as compared with respective controls, except that reduction by H. rhossiliensis was greater in unheated soil than heat-treated soil in one experiment. Percentage of second-stage juveniles (J2) parasitised by fungi at the end of the experiment (60 days after planting) was generally higher with H. minnesotensis than with H. rhossiliensis. The percentage parasitism was positively correlated with initial fungal inoculation level. The soil heat treatment increased fungal parasitism in one experiment but not in the other. Plant growth was unaffected by treatments except that the soil heat treatment increased plant shoot weight as compared with unheated soil in one experiment.


2018 ◽  
Vol 10 (2) ◽  
pp. 11-29
Author(s):  
Wahyu Wardiana Dewi

This research is aimet to known the responsed of cucumber plant (Cucumis sativus L.), the good means for the growth and yield of cucumber (Cucumis sativus L) of the hybrid varieties doses of good means. This study uses a randomized block design (RAK) with one factor and 5 replications. The main factors, namely: goat manure. First repeat that: without fertilizer (P0), manure goat 10 ton / ha (P1), manure goat 20 ton / ha (P2), manure goat 30 ton / ha (P3), and the latter is manure goat 40 ton / ha (P4). The parameters observed were plant height, leaf number, fruit weight, fruit length and diameter of the fruit. Data analysis by using analysis of variance (ANOVA), if the effect followed by Least Significant Difference Test (BNT). The results based on the analysis of variance showed that: 1) Treatment of manure goat (P) significantly affected the growth and yield of cucumber plants include all the parameters of observation starting plant height, leaf number, fruit weight, fruit length and fruit diameter. Dose goat manure 40 t / ha is the best concentration to produce the highest average values for all parameters. The lowest value of all parameters are shown on the dose P0 (without manure goat / control).


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