Banca de DEFESA: VICENTE FERREIRA DE ARAUJO NETO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : VICENTE FERREIRA DE ARAUJO NETO
DATE: 29/08/2023
TIME: 14:00
LOCAL: PRÉDIO DA PÓS-GRADUAÇÃO DO CECA
TITLE:

INTEGRATED MANAGEMENT OF WEED PLANTS IN LIME ORANGE (Citrus aurantifolia) CULTURE

KEY WORDS:

weed control, Citrus, cultivation, quality.

PAGES: 75
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

Brazil is the second largest producer of oranges in the world, third to the European Union, where China is in first place. In the Northeast it is an important activity, especially in the states of Bahia, Pernambuco and Sergipe. The state of Alagoas has favorable climatic conditions for the cultivation of fruit, with high temperatures, availability of water and suitable soils. The general objective of this work sought to analyze in the state of Alagoas, if there is a lack of studies on the proper management of weeds in citrus and its influence on productivity. Obtaining then the best weed management method to have the potential production of this crop in the State. The methodology used was part of the experimental area located on the Campus of Engineering and Agricultural Sciences – CECA, of the Federal University of Alagoas – UFAL, in the municipality of Rio Largo, under the geographical coordinates 9º28'29.1” south latitude and 35º49'43, 6” west longitude and 127 m altitude. The average of minimum and maximum temperatures varies between 17.7°C and 34.1°C during the period of this study. The highest average temperature was verified in March with 21.4°C, and the lowest in September with 17.6°C, showing approximately 21.59% of the difference between March and September. The experiment was in an area of 1,885m2, the spacing between rows was 4m, the same as the spacing between plants. The plots were 16m2 (4m X 4m). For integrated weed management methods, the experiment was divided into 5 blocks and 9 treatments in the experimental area. The soil in the experimental area is classified as dystrophic grayish Argisol. The data obtained were subjected to analysis of variance using the F test, and the means compared using the Tukey test at 5% probability. Statistical analysis was performed using the Sisvar version 5.7 program. In the results and discussions, the use of mulch presented the highest average in the variable number of fruits, followed by weeding with a hoe and chemical treatment, 116.2; 109.8; 64.6 fruits respectively. The treatments with sunn hemp and peanut showed the lowest mean number of fruits, 3.4 and 7.0, respectively. When checking the number of weeds, the mulch together with the chemical control and the cover with jack beans. It was superior to the other types of management, the weed control was superior to the other treatments, not presenting weeds in these treatments. It was also possible to observe that the use of herbicides is one of the most efficient ways of controlling weeds in a crop. A 100% reduction in the incidence of species is evident from the first evaluation to the conclusion of the experiment, demonstrating the expressive effectiveness of this method. Finally, it was concluded that the management with mulch was efficient in controlling weeds, also resulting in a greater number of fruits. Weeding with a hoe, chemical control and mulching were effective in controlling weeds. Urochloa decumbens, Crotalaria juncea and forage peanut satisfactorily control weeds, however, reduce the number of fruits.
Keywords:

BANKING MEMBERS:
Interno(a) - 1120584 - EURICO EDUARDO PINTO DE LEMOS
Presidente - 332.041.954-49 - JORGE LUIZ XAVIER LINS CUNHA - UFAL
Externo(a) ao Programa - 1219272 - REINALDO DE ALENCAR PAES