Root-knot nematodes limit lettuce crop productivity. Efficient control is achieved through integrated management, and research about the efficiency of new products for nutrition and biological control is required. Thus, the objective of this study was to evaluate the effect of fertilizers, applied alone or in combination with microorganisms based product on the control of Meloidogyne javanica in lettuce. In the first research (research 1), conducted at two different periods, the products Agro-Mos®, Soil-SetTM and Copper-Crop® applied on shoots were evaluated; in research 2, the same products were applied isolated on shoots or associated to NemOutTM (Bacillus licheniformis, B. subtilis and Trichoderma longibrachiatum) applied to the soil. In research 1, the fertilizers Agro-Mos®, Soil-SetTM and Copper-Crop® applied alone promoted reduction in reproduction of M. javanica ranging from 31 to 75%, 36 to 79%, and 71 to 75%, respectively. The effect on plant development was variable, obtaining better results of fresh shoot mass applying Copper-Crop®. The combination of products did not have an additional effect on the control of the nematode, on the contrary, in general the products had antagonistic action. However, fertilizers and biological control applied isolated were efficient for nematode control.
Elicitors of plant resistance are compounds that activate enzymatic processes involved in plant defense. Micronutrients also play an important role in plant responses against pathogens because they function as enzyme cofactors. Despite their well-known benefits, elicitors and micronutrients have been little investigated in nematode control. This study aimed to assess the effects of Agro-Mos® (a commercial biostimulant) and micronutrients (Zn and Mn), alone and combined, on soybean inoculated with Meloidogyne javanica. Seeds of soybean were sown in trays, treated 15 days after germination, and inoculated with 2000 eggs and juveniles of M. javanica at the time of transplanting. Treatments were as follows: 1 L/ha Agro-Mos®, 2 L/ha Metalosate® Zinc, 1.5 L/ha Metalosate® Manganese, Agro-Mos® + Zn, Agro-Mos® + Mn, and Agro-Mos® + Zn + Mn. Untreated inoculated and uninoculated plants were used as controls. At 60 days after inoculation, plants were harvested and evaluated for vegetative growth, nutrient content, and nematode parameters. All treatments were effective in reducing M. javanica population density in roots compared to the control. Agro-Mos®, Agro-Mos® + Zn, and Agro-Mos® + Zn + Mn were the most effective, reducing total nematode number and population density by 55–78% (P ≤ 0.05) in relation to the control. Agro-Mos® + Zn increased shoot dry weight. The results show that balanced fertilization can be used as part of an integrated nematode control strategy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.