Produtividade e perdas de amendoim em cinco diferentes datas de arranquio

The harvest is a critical time in the production of the peanut (Arachis hypogaea L.), however in this operation losses are inevitable, in some cases o f up to 30% of production. Peanuts are grown for a short period during the reform of the sugarcane fields, providing better usage of the agricultural spaces in Jaboticabal, São Paulo. The objective of this research was to see how early the peanuts could be dug up once they are seen to have matured. The peanuts were dug up at 120, 125, 130, 135 and 140 days after sowing. Results were subjected to variance analysis by the F-test, and when there was significance of the averages, the Tukey test at 5% probability was applied, using a box plot for the following variables: maturation, moisture content of pods and soil, mechanical resistance of soil to penetration, harvest loss and productivity. The box plot proved efficient in the univariate evaluation of the analyzed variables, creating excellent conditions for viewing their behavior. Digging up the peanuts at 120 DAS is recommended.

Desempenho de máquinas para a semeadura e o arranquio mecanizado na cultura do amendoim em latossolo vermelho

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Produtividade e perdas em função da antecipação do arranquio mecanizado de amendoim

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Variabilidade de perdas no arranquio mecanizado de amendoim: estudo de caso

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Qualidade da semeadura e do arranquio mecanizado do amendoim

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Perdas quali-quantitativas na colheita mecanizada de sementes de amendoim (Arachis hypogaea L.)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Controle estatístico aplicado ao processo de colheita mecanizada de sementes de amendoim

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Peanut mechanized digging regarding to plant population and soil water level

The largest losses in mechanical harvesting of peanuts occur during the stage of digging, and its assessment is still incipient in Brazil. Therefore, the aim of this study was to evaluate the quantitative losses and the performance of the tractor-digger-inverter, according to soil water content and plant populations. The experiment was conducted in a completely randomized block design with a factorial scheme 2 x 3, in which the treatments consisted of two soil, water content (19.3 and 24.8%) and three populations of plants (86,111, 127,603 and 141,144 plants ha-1), with four replications. The quantitative digging losses and the set mechanized performance were evaluated. The largest amount of visible and total losses was found in the population of 141.144 plants ha-1 for the 19.3% soil water content. The harvested material flow and the tractor-digger-inverter performance were not influenced by soil water content and plant population. The water content in the pods was higher in 24.8% soil water content only for the population of 86,111 plants ha-1; the yield was higher in the populations of 141.144 and 127.603 plants ha-1, in the 19.3 e 24.8% soil water content, respectively.

Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Sistema eletrohidráulico para acionamento da esteira vibratória do arrancador-invertedor de amendoim

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Aplicação de biofungicidas no controle do fungo Aspergillus flavus L. em amendoim (Arachis hypogaea)

Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE