Banca de QUALIFICAÇÃO: TEREZA THAINÁ MONTEIRO DO CARMO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : TEREZA THAINÁ MONTEIRO DO CARMO
DATE: 22/06/2023
TIME: 09:00
LOCAL: Remoto (Google Meet)
TITLE:

PERFORMANCE EVALUATION OF A MEDIUM SIZE SHREDDER IN AREA PREPARATION, IN THE NORTHEAST OF PARÁ

KEY WORDS:

Secondary vegetation, Family farming, No-burn agriculture

PAGES: 32
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUMMARY:

In the Northeast Region of the State of Pará, fire was widely used in family agriculture, the slash and burn system was used to increase the soil nutritional qualities and prepare the area for cultivation, a very harmful practice, both for the farmer and for the environment. In the early 90's Embrapa Amazônia Oriental together with German universities began a technical-scientific cooperation to conduct studies that would make family farming in the northeast region of Pará more sustainable, in view of sustainable management of shrublands with the former SHIFT project, now called Tipitamba project using shredders for shredding shrublands. Thus, the objective of this work was to evaluate the performance of medium-sized shredders in shredding biomass of poultry, evaluating the biomass shredding yield, material quality and crop performance. The experiments were conducted in the municipality of Igarapé-Açu, Bragantina Zone, northeastern Pará, the municipality is prominent in agricultural production, with incentives for small producers and family farming. The evaluation of the shredding performance was obtained through the collection of aerial biomass from 7 properties of various sizes and conditions. From this we obtained an average of 19.79 t/ha-1 of aerial biomass and a consumption of 79.89 L/ha. The quality of crushing of the material was done through a sieving system, using three sieves: 7mm, 25mm and 35mm, the total amount of dry crushed biomass was approximately 17.08 t/ha-1 and in the biomass making the use of sieves, greater amounts of material were found in the classes of <7mm corresponding to 44.81 t/ha-1, followed by material > 35mm with 24.70 t. ha-1, the larger size materials are important because they are long-term sources of nutrients, while the smaller size <7mm are absorbed faster. To evaluate the performance of agricultural crops a corn, caupi and cassava crop was analyzed, as would be the production of these crops in an area prepared with the medium sized shredder, thus the crops were planted in an area of approximately 0.5 ha divided into 3 blocks with 9 plots measuring approximately 16x33m, with spacing of 1x0.5m for corn and caupi and 1x1m for cassava, being three treatments, T1: corn, T2: corn + Cassava, T3: corn + caupi + cassava evaluating the productivity of 24 plants per treatment of each crop. Average results were obtained for corn T1: 2.02 t/ha-1, T2: 1.87 t/ha-1 and T3: 2.14 t/ha-1 and for corn and 1.59 t/ha-1 for cassava. 

BANKING MEMBERS:
Presidente - 094.373.632-34 - OSVALDO RYOHEI KATO - UFRA
Interna - 2410727 - LINA BUFALINO
Externa ao Programa - 1741033 - THAIS YURI RODRIGUES NAGAISHI
Externa à Instituição - DÉBORA VEIGA DE ARAGÃO - EMBRAPA
Externo à Instituição - PAULO CELSO SANTIAGO BITTENCOURT - UFPA