Banca de DEFESA: TIAGO PINHO SOUZA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : TIAGO PINHO SOUZA
DATA : 08/10/2018
HORA: 08:00
LOCAL: PPGF
TÍTULO:

Agronomic characterization and intercropping of bean-fava (Phaseolus lunatus L.)

PALAVRAS-CHAVES:

Palavras-chave: lima beans, intercropping, family farming

PÁGINAS: 104
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Manejo e Tratos Culturais
RESUMO:

Phaseolus lunatus L., popularly known as lima bean is a legume of great importance mainly in the states of northeastern Brazil and in the north of the state of Minas Gerais. In these regions, this plant is used as a source of protein and for income generation by family farmers. Its outstanding characteristics are the high tolerance to water deficit and high temperatures. The majority of the varieties present habit of indeterminate growth and the planting is done in consortium with maize, cassava and castor bean, that serve as natural tutors for the culture. This legume performs symbiosis with rhizobia naturally present in the soil that makes N available to plants. Little attention has been paid to this species by the research bodies and, over time, genetic materials with desirable agronomic characteristics are disappearing. In addition, most of the studies have been carried out in the northeast of the country, and there is a general lack of information about fava beans in other regions. Increasing the knowledge of a potentially productive species under the edaphoclimatic conditions of Seropédica, municipality of Baixada Fluminense, in the state of Rio de Janeiro, may lead to the selection of varieties capable of diversifying marketed products and increasing the income of family farmers. The objective of the present study was to characterize 19 accessions from family farms in the municipality of Montes Claros-MG, to evaluate the productivity of single and intercropping, to select the plants to obtain more productive genotypes, and to characterize the nodulation of the bean- fava. Plants of the 14 accessions were evaluated by means of 34 morphoagronomic descriptors, planted in December 2014, in two vertical rears. In September 2015 (planting of "spring - summer") and March 2016 ("autumn - winter" planting), 10 accessions were characterized in a vertical pull system, in a randomized block design, with 4 replications. In March 2017, 15 accessions were planted in 8-liter pots and characterized by morphologically descriptive, completely randomized design with 10 replicates. Five accessions that showed the greatest productivity in the first experiment of plant multiplication were again evaluated in single plantation and intercropped with maize at a planting density of 50,000 plants.ha-1, in two locations, Seropédica - RJ and Campos dos Goytacazes - RJ , in a randomized complete block design with four replicates. In the first semester of 2015, a nodulation test was carried out at Embrapa Agrobiology in pots with three liters capacity, with three soils of different agricultural uses (bean cultivation, pasture and agroecological system) and three accessions of bean bean (G1 , G8 and G12), in a randomized block design with three replicates, in a factorial scheme. All data from the experiments were submitted to analysis of variance and the differences between the means were compared by the Tukey test at the 5% probability level. All statistics were made using Excel software and the statistical programs used were Sisvar 5.6 and BioEstat 5.0. The accesses G1, G3, G5, G8, G9 and G12 were the ones that stood out in production in the evaluated experiments. Sun-ray and sun-rays were the least productive. Henderson access was highlighted by the determined habit of growth and its productive potential. The bean-fava responds to the photoperiod, being short-day plants. Both the maize production and the bean production were benefited by the consortium. G8 access and soil under agroecological system formed the largest number of nodules per plant

 

 

Plants of the 14 accessions were evaluated by means of 34 morphoagronomic descriptors, planted in December 2014, in two vertical rears. In September 2015 (planting of "spring - summer") and March 2016 ("autumn - winter" planting), 10 accessions were characterized in a vertical pull system, in a randomized block design, with 4 replications. In March 2017, 15 accessions were planted in 8-liter pots and characterized by morphologically descriptive, completely randomized design with 10 replicates. Five accessions that showed the greatest productivity in the first experiment of plant multiplication were again evaluated in single plantation and intercropped with maize at a planting density of 50,000 plants.ha-1, in two locations, Seropédica - RJ and Campos dos Goytacazes - RJ , in a randomized complete block design with four replicates. In the first semester of 2015, a nodulation test was carried out at Embrapa Agrobiology in pots with three liters capacity, with three soils of different agricultural uses (bean cultivation, pasture and agroecological system) and three accessions of bean bean (G1 , G8 and G12), in a randomized block design with three replicates, in a factorial scheme. All data from the experiments were submitted to analysis of variance and the differences between the means were compared by the Tukey test at the 5% probability level. All statistics were made using Excel software and the statistical programs used were Sisvar 5.6 and BioEstat 5.0. The accesses G1, G3, G5, G8, G9 and G12 were the ones that stood out in production in the evaluated experiments. Sun-ray and sun-rays were the least productive. Henderson access was highlighted by the determined habit of growth and its productive potential. The bean-fava responds to the photoperiod, being short-day plants. Both the maize production and the bean production were benefited by the consortium. G8 access and soil under agroecological system formed the largest number of nodules per plant.

MEMBROS DA BANCA:
Presidente - 1080064 - ANTONIO CARLOS DE SOUZA ABBOUD
Interno - 1104775 - ADELSON PAULO DE ARAUJO
Externo ao Programa - 2870981 - ALEXANDRE PORTO SALMI
Externo à Instituição - EDNALDO DA SILVA ARAÚJO - EMBRAPA
Externo à Instituição - DELACYR DA SILVA BRANDÃO JR - UFMG