scholarly journals Fertilizer application enhances establishment of cacao seedlings in plant-parasitic nematodes infected soil

2020 ◽  
Vol 115 (2) ◽  
pp. 417
Author(s):  
Samuel Bukola ORISAJO ◽  
Kayode Babatunde ADEJOBI
Keyword(s):  
Soil Fertility ◽  
Organic Fertilizer ◽  
Crop Productivity ◽  
Organic Fertilizers ◽  
Parasitic Nematodes ◽  
Mineral Fertilizers ◽  
Plant Parasitic Nematodes ◽  
Southwestern Nigeria ◽  
Percentage Survival ◽  
Plant Parasitic

<p>Low soil fertility, pests and diseases are major problems of growth and establishment of cacao seedlings on the field. Cocoa production increases by new plantings and rehabilitation of moribund farms, but a build-up of plant-parasitic nematodes (PPN) causing dieback and declining soil fertility has discouraged many farmers, leading to a reduction in crop productivity.  In this study, the potentials of some organic wastes as fertilizers and their effects on establishment of cacao seedlings in PPN infected soils was investigated at Ibadan and Owena of Southwestern Nigeria. Goat dung (GD), organic fertilizer (OF), organo-mineral fertilizers (OMF) and NPK 15:15:15 were applied at 200, 400 and 600 kg ha<sup>-1</sup>, respectively, to cacao seedlings one month after transplanting, while unfertilized served as control. Results from the experiments showed a significant increase in percentage survival of cacao seedlings under organic fertilizers at Ibadan and Owena compared to NPK and control even at the lowest rate of 200 kg ha<sup>-1</sup> 3 years after transplanting. The incorporation of GD, OF and OMF significantly reduced the population densities of PPN compared to control. Therefore, GD, OF and OMF at 200 kg ha<sup>-1</sup> are recommended for soil application to enhance the field establishment of cacao seedlings in the soil infected with PPN.</p>

scholarly journals Estimation of effectiveness of usage of liquid organic fertilizer in the context of rational land use: a case study of Ukraine

2018 ◽  
Vol 8 (2) ◽  
pp. 95-105 ◽  
Author(s):  
Anatoliy Kucher
Keyword(s):  
Comparative Analysis ◽  
Soil Fertility ◽  
Ammonium Nitrate ◽  
Organic Fertilizer ◽  
Economic Effectiveness ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Sample Number ◽  
Pig Farm ◽  
The Impact

The purpose of the article – to perform comparative analysis of the economic effectiveness of the 10 samples of organic fertilizer of pig farm, bio humus “Humivit” and mineral fertilizers (Nitroamofoska, ammonium nitrate, carbamide) on the example of oats. The study used the following methods: abstract-logical, cash-analytical, cash-equivalent, expert, monographic. The research was done in Ukraine. The results of the comparative analysis of economic effectiveness of the 10 samples of organic pig fertilizer, bio humus “Humivit” and mineral fertilizers (Nitroamofoska, ammonium nitrate, carbamide) in the example of oats on the green mass show that the use of organic fertilizers sample number 1, 2, 3, 4, 5, 6, 10 is an economically effective, while organic fertilizers of sample number 7, 8, 9 are economically inefficient. By the main indicators of economic effectiveness (coefficients of payback, conditional additional profit, level of profitability) organic fertilizers sample number 1, 2, 3, 4, 5, 6, 10 have significant competitive advantages over the studied brands of mineral fertilizers and bio humus “Humivit”. The use of organic pig fertilizers, except the sample number 8, in economic terms for the impact on potential soil fertility is more effective than bio humus “Humivit”. The most significant economic benefits for the impact on potential soil fertility are samples of organic fertilizers pig number 1, 5, 10, whose application generates the lowest cost price of humus. The element of novelty is that with using the author’s scientific and methodical approach it was conducted the estimation of economic effectiveness of the liquid organic fertilizer of pig farm for the impact on potential soil fertility.

Humic acid – a potential bioresource for nematode control

Nematology ◽  
2021 ◽  
pp. 1-10
Author(s):  
Seenivasan Nagachandrabose ◽  
Richard Baidoo
Keyword(s):  
Humic Acid ◽  
Crop Production ◽  
Trichoderma Viride ◽  
Foliar Spray ◽  
Crop Productivity ◽  
Systemic Resistance ◽  
Parasitic Nematodes ◽  
Nematode Control ◽  
Plant Parasitic Nematodes ◽  
Plant Parasitic

Summary There is a growing interest in the use of natural products for crop production and protection. Humic acid is a well-known bioresource that intensifies soil functions and improves crop productivity. This review article provides a synopsis of the humic acid-plant-nematode association and the prospects for using humic acid as an alternative to chemical control of nematodes. Humic acid is known to have toxic and antagonistic effects against many plant-parasitic nematodes, including Meloidogyne spp., Rotylenchulus reniformis, Radopholus similis and Helicotylenchus multicinctus. The required dose for getting significant nematode control ranges from 0.04 to 2.0% concentration. Delivery methods like soil application or drenching, seedling root dip treatment and foliar spray on leaves are effective for nematode control. Humic acid controls plant-parasitic nematodes through various mechanisms including killing juveniles, inhibiting hatching, reducing nematode infectivity and reproduction, and inducing systemic resistance. Humic acid is compatible with bio-inoculants such as Azospirillum spp., phosphobacterium, Bacillus megaterium, Pseudomonas fluorescens, Trichoderma viride, Glomus spp., Pochonia chlamydosporia, Purpureocillium lilacinum and T. asperellum. These attributes of humic acid show a promising potential for use in nematode control. However, further work on bio-efficacy against a broad spectrum of plant-parasitic nematodes is needed.

scholarly journals Effectiveness of various types and norms of fertilizers in increasing the productivity of cultivated crops and the fertility of gray forest soil in the Pre-Kama Area of Tatarstan

2020 ◽  
Vol 17 ◽  
pp. 00255
Author(s):  
Rafil C. Shakirov ◽  
Zakirzhan M. Bikhmuhammetov ◽  
Fidail F. Khisamiev
Keyword(s):  
Soil Fertility ◽  
Crop Rotation ◽  
Crop Production ◽  
Organic Fertilizer ◽  
Production Quality ◽  
Organic Fertilizers ◽  
Chicken Manure ◽  
Mineral Fertilizers ◽  
Comparative Aspect ◽  
Environmentally Safe

The article discusses the effectiveness of various types and norms of organic fertilizers in improving soil fertility, productivity and crop production quality, as well as crop rotation productivity in a comparative aspect with the estimated norms of mineral fertilizers for obtaining the planned yield. Various norms of thermally dried granulated chicken manure were studied, its suitability as an environmentally safe complex organic fertilizer and its effectiveness in increasing yields, produce quality, soil fertility and crop rotation productivity compared with traditional manure, buckwheat green manure crop, mineral fertilizers and natural nutritional background were established. The economic efficiency of the use of various types of fertilizers in crop rotation is determined and its increase to a profitability level of 74–222 % depending on the type and norms of fertilizers is established.

scholarly journals Host status of soybean genotypes to Meloidogyne arenaria and Meloidogyne morocciensis

2020 ◽  
Vol 19 (4) ◽  
pp. 428-433
Author(s):  
Daiane Dalla Nora ◽  
Ricardo Rubin Balardin ◽  
Tiago Edu Kaspary ◽  
Ismail Teodoro de Souza Júnior ◽  
Cristiano Bellé
Keyword(s):  
Crop Productivity ◽  
Crop Damage ◽  
Parasitic Nematodes ◽  
Initial Population ◽  
Meloidogyne Arenaria ◽  
Plant Parasitic Nematodes ◽  
Significance Level ◽  
Final Population ◽  
Soybean Genotypes ◽  
Plant Parasitic

Soybean crop productivity is limited by several biotic factors, particularly plant-parasitic nematodes. Several species have been reported to cause crop damage, especially those of the genus Meloidogyne. Therefore, the aim of this study was to evaluate, the reaction of 28 soybean genotypes to Meloidogyne arenaria and M. morocciensis in a greenhouse. The soybean genotypes were the same for experiments with different species of plant-parasitic nematodes and were individually inoculated with 5,000 eggs + second-stage juveniles (J2) of Meloidogyne and kept in a greenhouse. After 60 days of inoculation, the roots of each plant were assessed for the number of galls, final population, and reproduction factor (RF = final population/initial population). The averages of the different variables were then compared to each other by the Scott-Knott cluster analysis at a significance level of 5%. All of the soybean genotypes in the study were susceptible to both nematodes, with RF ranging from 3.5 to 24.1 for M. arenaria and 5.3 to 37.5 for M. morocciensis.

Management of Plant-Parasitic Nematodes in Florida Cotton Production

EDIS ◽  
2017 ◽  
Vol 2017 (2) ◽  
pp. 8
Author(s):  
Zane Grabau
Keyword(s):  
Parasitic Nematodes ◽  
Cotton Production ◽  
Plant Parasitic Nematodes ◽  
Fact Sheet ◽  
Plant Parasitic

This 8-page fact sheet written by Zane J. Grabau and published in January 2017 by the UF Department of Entomology and Nematology explains how to diagnose and manage nematode problems in cotton production.­http://edis.ifas.ufl.edu/ng015

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