Banca de DEFESA: GALDERES MAGALHÃES DE OLIVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : GALDERES MAGALHÃES DE OLIVEIRA
DATE: 04/08/2022
TIME: 14:00
LOCAL: https://meet.google.com/zdw-ivdu-acg
TITLE:

Evaluation of composted and dehydrated laying hen manure on lettuce agronomic performance

KEY WORDS:

Organic fertilization, chicken manure, organic agriculture, agroecology

PAGES: 47
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Ciência do Solo
SPECIALTY: Fertilidade do Solo e Adubação
SUMMARY:

 

OLIVEIRA, Galderes Magalhães de. Evaluation of composted and dehydrated laying hen manure on lettuce agronomic performance. 2022. 33p. Dissertation (Master in Organic Agriculture). Institute of Agronomy, Federal Rural University of Rio de Janeiro, Seropédica, RJ, 2022.

Laying poultry is undergoing major technological evolution, in order to accompany the other agricultural production chains and the growing human demand for chicken eggs, which in turn, also provided a significant increase in the production of its main residue, the manure. With the increase of this by-product in Santa Maria de Jetibá/ES and the expansion of the need to transform it, in order to allow its commercialization, it started to be dehydrated. As it is a recent technology, without many studies on its use in Espírito Santo agriculture, there is a need for research. To enable the proper use of this product, two experiments were conducted, both with the objective of evaluating the dehydrated laying hen manure in the production of lettuce in an organic production system. The experiments were implemented and conducted in the area of Fazenda do Incaper, in the municipality of Santa Maria de Jetibá/ES. The first experiment was carried out in a greenhouse, in a plastic pot, each pot receiving a dose equivalent to 200 kg of N ha-1, according to the type of fertilizer used, mixed with the soil. The experimental design was completely randomized, in a 3 x 4 factorial scheme, the first factor being three types of organic fertilizers (Dehydrated Layering Chicken Manure - EGD, Composted Layering Chicken Manure with Sawdust Powder - ECS and Composted Layering Chicken Manure with Coffee Straw, and the second factor different pre-incubation times after fertilizer application (0, 3, 7 and 14 days), with five repetitions (each repetition a pot with a lettuce seedling). chlorosis, necrosis or other visible damage due to fertilizer use, in addition to the following characteristics: shoot fresh mass (MFPA), stem diameter (DiamCau) and head diameter (DiamCab). field, in the experimental design of randomized blocks in a factorial scheme [(2 x 4)+1], with the first factor corresponding to different types of organic fertilizers (EGD and ECS). and fertilization levels (100, 200, 300 and 400 kg N ha-1) and 1 represents the control treatment (without fertilization), with four replications. Upon reaching the commercial standard, the six central plants of each experimental plot were harvested and evaluated in the following characteristics: MFPA, DiamCau, DiamCab, aerial part dry mass and productivity. The variables analyzed were standardized in the form of data, tabulated and submitted to analysis of variance. Scott-Knott test was performed for both experiments and regression analysis and Dunnet test for the second experiment. In both experiments the EGD did not show good results in lettuce cultivation. Based on the results obtained, it is suggested that lettuce should be planted at least 3 days after fertilizer application. In general, none of the doses of dehydrated laying hen manure showed a satisfactory increase in the evaluated characteristics. It is recommended that further studies be carried out to identify which factors negatively influence the development of lettuce with the use of EGD.

BANKING MEMBERS:
Presidente - ***.960.133-** - EDNALDO DA SILVA ARAÚJO - EMBRAPA
Interno - ***.790.757-** - MARCO ANTONIO DE ALMEIDA LEAL - EMBRAPA
Externa à Instituição - CAMILA DA COSTA BARROS DE SOUZA