Comparative field test between two sugar cane (Saccharum spp.) harvesters under two different operational conditions in Brazil

The sugar cane crop is one of the main products in Brazil and according to several authors can generate, besides the industrialized stalks, an amount of crop residues from the order of 15 to 30 % in weight of the aerial part of the plants, depending on the field conditions. The sugar cane area in Brazil is around 5.5×106 hectares, with an amount of 400.106 tons of stalks, with stalks yield of 72 tons.ha-1. This study took place in a sugar cane plot (Latitude 22°46'S, Longitude 47°23'W and 600m of altitude) with 3% of slope, located in São Paulo State. The sugar cane variety was SP 80-1816, in its forth cut, 11 months old and with a planted row spacing of 1.40 m. By other side, several sugar mills are bringing the crop residue to their patio to produce energy with the bagasse. One choice is to bring the crop residue at the same moment with the stalks, avoiding the next operation of baling it. The objective of this study was to analyze some operational parameters of two different sugar cane harvesters under the same field conditions, which was divided in four treatments: T1 = CAMECO CHT2500B operating normally; T2 = CAMECO CHT2500B operating without the cleaning system; T3 = CASE 7700 operating normally; T4 = CASE 7700 operating without the cleaning system. The results obtained were: Table presented CEB = Gross effective capacity; CEL = Net effective capacity. The conclusion is that under normal operation the CASE harvester worked better then CAMECO in the parameters CEL stalks and Manipulation efficiency. And without the cleaning system operating CASE also worked better in the parameters of CEB raw material, CEB stalks, CEL raw material and CEL stalks.

Perdas qualitativas na colheita mecanizada de sementes de soja

The study aimed to assess the physical and physiological characteristics of soybean seeds collected in grain tank and the outlet of the discharge tube of the harvester, depending on the year and the forward speed of the harvester. The experimental design was completely randomized in a factorial 2 x 2 x 2 tested two harvesters of different years, two displacement's speeds and two locations of sample collection, totaling eight treatments with four replications. The harvest of soybean cv. COODETEC 217, was performed with two tangential harvesters, aged three and four years, with 900 rpm rotation of the cylinder, operating at forward speeds of 4 ± 0.5 km h-1 and 7 ± 0.5 km h-1. Seed samples (approximately 3 kg) were withdrawn at the grain tank and the outlet of the discharge tube of the harvester and subjected to determinations of water content in field and laboratory. Subsequently, we evaluated purity, mechanical damage, germination and seed vigor. The younger harvester had a higher percentage of pure seed and lowest percentage of inert material. The increase in forward speed provides the higher the bands percentage and reduction of percentages of pure seed and inert material. The percentage of inert material was higher for seeds collected in the discharge pipe. The speed increase has positively influenced the emergence in sand for the harvester oldest (4 years) and negatively to the harvester youngest (3 years). At lower speeds the youngest harvester higher percentage of germination in sand.

Produtividade e perdas na colheita de dois cultivares híbridos de milho em função da velocidade de semeadura

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

Milho para silagem: semeadura e colheita em Latossolo sob preparo convencional

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo comparativo de métodos geoestatísticos aplicados em agricultura de precisão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desempenho operacional de uma colhedora de cana-de-açucar ( Saccarum spp.) em função dos turnos de trabalho

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Consumo de combustível de duas colhedoras de cana-de-açúcar em função da velocidade e rotação de motor

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação físico-química de palhiço de cana-de-açúcar utilizado para cogeração de energia elétrica

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Desempenho operacional da colheita mecanizada de cana-de-açúcar (saccharum spp.) em função da velocidade de deslocamento e rotação do motor da colhedora

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Análise de dois modais de sistemas de colheita mecanizados de eucalipto em 1ª rotação

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Perdas na colheita e qualidade da fibra de cultivares de algodão adensado em função de sistemas de colheita

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

O programa de capacitação Cana Limpa: uma avaliação sob a ótica dos cortadores de cana

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Diagnóstico da colheita e beneficiamento de sementes de algodão na região sul de Goiás

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Eficácia do herbicida amicarbazone em aplicação conjunta com a colheita de cana-de-açúcar no controle das principais plantas daninhas da cultura

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação econômica de dois sistemas de colheita florestal mecanizada de Eucalipto

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)