Banca de QUALIFICAÇÃO: GABRIELA DE SOUZA DA SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : GABRIELA DE SOUZA DA SILVA
DATA : 21/11/2019
HORA: 13:30
LOCAL: Sala 04 - DFITO
TÍTULO:

MIXTURES OF RECOMMENDED PLANT HEALTH PRODUCTS FOR SOY AND CORN CROP: INTERACTION AND PHYTOTOXICITY

PALAVRAS-CHAVES:

incompatibility, tank mix, phytotoxicity, pesticides, spray solution

PÁGINAS: 20
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Matologia
RESUMO:

The use of tank mixtures has been used as a control practice in crop management. Among the mixtures stand out different phytosanitary products, such as herbicides, fungicides, insecticides, in addition to those intended for mineral nutrition. However, when mixing different molecules in the tank, physicochemical interactions may occur in the spray solution, reducing the efficiency of the products and / or causing phytotoxicity in the crops, which may lead to reduced productivity. The objective of this work is to evaluate the interaction between the different phytosanitary products (herbicides, fungicides, insecticides and nutrition) recommended for soybean and corn crops, as well as their effects on crops. Two experiments will be performed: I- evaluation of laboratory mixtures and II- crop selectivity. Both tests will be conducted at the Federal Rural University of Rio de Janeiro, Seropédica / RJ. The experimental design will be completely randomized with four replications. The experimental units for the first experiment will be composed of 90 possible recommended mixtures combinations for soybean, and 72 recommended mixtures mixtures for corn culture, as well as isolated products. The physicochemical interaction evaluations of the mixtures will be carried out according to the Brazilian standard NBR 13875 (Pesticides and related products - physicochemical compatibility evaluation). For the first experiment the phytosanitary products used for soybean cultivation will be: herbicides - Verdict^®, Pacto^®, Flex^®, Zapp^®QI 620, fungicides - Fox^®, Orkestra^®, Unizeb Gold^®, insecticides - Benevia^®, Engeo Pleno^®, Exalt^® and Nutrition - ProAcqua^®Initial, Profol^®Productivity. For the corn crop will be used: herbicides - Sansom^®, Soberan^®, Callisto^®, Zapp^®QI 620, fungicides - Priori^®Xtra, Native^®, Folicur^®, Aproach^® Prima, insecticides - Connect^®, Lorsban^® 480 BR, Larvin^®800 WG and Nutrition - Profol^® Exclusive, Blindex^®. Mixtures that do not show incompatibility will be selected for experiment II. In the EII the experimental units will be composed of 5 liter pots with sieved soil previously sent for classification, containing one plant per pot, being applied at the end of the vegetative stage (V) of soybean and corn crops. At 7, 14, 21 and 28 days after application (DAA) of the mixtures will be made evaluations of chlorophyll a phytotoxicity, height and transient fluorescence. Phytotoxicity will be assessed using a visual symptom scale, where 0% means no symptom and 100% plant death. At the end of the cycle the crop yield will be calculated. The data obtained in the experiment will be submitted to ANOVA (p ≤ 0.05), and when significant submitted to the tests of average to 5% (p ≤ 0.05). The results of this study can define which recommended phytosanitary products for soybean and corn crops can be mixed in the same application without any interaction between them, ensuring product efficacy and safety for the crop.

MEMBROS DA BANCA:
Presidente - 2466219 - CAMILA FERREIRA DE PINHO
Interno - 019.283.890-31 - ANA CLAUDIA LANGARO - UFRRJ
Externo ao Programa - 3036150 - JUNIOR BORELLA
Externo ao Programa - 1905333 - AROLDO FERREIRA LOPES MACHADO