Banca de DEFESA: MARIA DE NAZARÉ GOMES DE SOUSA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARIA DE NAZARÉ GOMES DE SOUSA
DATE: 20/12/2021
TIME: 14:00
LOCAL: Defesa remota pelo Google Meet
TITLE:

Peanut cultivation with biological fertilizer and Bradyrhizobium spp. in coastal plateau soil

KEY WORDS:

Sustainable agriculture. Arachis hypogaea L. plant nutrition.

PAGES: 46
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Ciência do Solo
SUMMARY:

The increasing population increase has led conventional agriculture to the intensive use of conventional fertilizers in order to meet the growing demand for food supplements. The intensive use of these inputs, mainly phosphate, potassium and nitrogen fertilizers have caused serious environmental impacts. In this context, the use of organic inputs has become an alternative to the use of conventional fertilizers, as it reduces environmental impacts and preserves the physical, chemical and biological health of the soil. Therefore, this work aimed to evaluate the use of biological fertilizers based on rock powder rich in phosphorus and potassium and on the chemical properties in soil of the coastal plateau, as well as to analyze their effectiveness when associated with nitrogen-fixing bactéria of the genus Bradyrhizobium spp., in nutrition, biomass production and productivity in peanut culture. The experiments were carried out in a greenhouse at the agronomy department of the Federal Rural University of Pernambuco-UFRPE. The soil used in the experiment was an acidic soil with pH 6.5 of the coastal table from the Japungu plant, located in Paraíba, 644.5 km from Recife-PE. The experiment was carried out in a randomized block design in a double factorial arrangement (7 x 2) with five replications. The first level of factor were the sources of nutrition: Biofertilizer- BNPK 100% (10 t ha-1); Biofertilizer-BNPK 150% (15 t ha-1); Bioprotector-PNPK 100% (10 t ha-1); Bioprotector-PNPK 150% (15 t ha-1); conventional fertilizer - FNPK 100% (recommended dose); earthworm humus (12 t ha-1); and control (without fertilization). The second level of factor consisted in the use or not of nitrogen-fixing bacteria of the genus Bradyrhizobium spp. . Plant phytotechnical parameters and crop yield after 90 days of cultivation, chemical analyzes (N, P and K) of soil and plant were evaluated. Among the results found, the phytotechnical parameters of plant yield were influenced by fertilizers. Inoculation with Bradyrhizobium spp. reflected positively on plant fresh mass weight, root/plant dry mass ratio, number of pods, and grain mass. The biological fertilizer based on PK rock powder influenced the levels of phosphorus in the soil and in the plant and nitrogen in the soil, standing out the conventional fertilizer. The earthworm humus influenced the levels of potassium in the soil and in the plant. In view of the results obtained, the recommendation to use a biological fertilizer based on PK rock powder and earthworm compost is an alternative to conventional fertilizers for the cultivation of peanuts.

BANKING MEMBERS:
Interna - 457.055.504-72 - ANA DOLORES SANTIAGO DE FREITAS - UFRPE
Externa à Instituição - EMMANUELLA VILA NOVA DA SILVA - UFRPE
Presidente - 385061 - MARIO DE ANDRADE LIRA JUNIOR