Saturação do Solo por Bases na Produtividade e Qualidade de Fibra do Algodoeiro

Freddi, Onã da Silva; Stoquero, Anderson; Peres, Fernanda Salles Cunha

doi:10.14583/2318-7670.v02n01a02

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…Industrial demand for fiber length is higher than 28 mm (Freddi et al, 2014), and at an average of 27.4 mm, fiber lengths in this study were lower (Table 4). The characteristic strength (STR) is within the industry compliance standards, since the required standard is more than 28 gf tex -1 and the average STR found in this study was 28.4 gf tex -1 , that is their classification fits as medium resistance (Table 4).…”

Section: Harvestmentioning

confidence: 51%

Mechanical harvest methods efficiency and its impacts on quality of narrow row cotton

Aguero¹,

Mion²,

Baraviera³

et al. 2018

Afr. J. Agric. Res.

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The large scale cultivation of cotton in the Cerrado areas was made possible by large investments in technology, particularly in mechanized harvesting, which makes the business viable. However, the use of harvesters causes qualitative and quantitative losses to the final product, reducing the profitability of production. This study aimed to evaluate the fiber characteristics of narrow row cotton using harvesting Pro-12 VRS picker and stripper. The experiment was conducted on a farm in the municipalities of Sorriso in the 2014 agricultural season. The experimental design was randomized blocks with seven replicates. The treatments consisted of five harvesting systems: Pro-12 VRS picker, finger stripper with and without field cleaner and brush stripper with and without field cleaner. The efficiency of the harvester was quantified by determining the yield and total loss. Impurities in the harvested cotton were quantified by determining the percentage of bark and stem present in the sample. The following technological fiber characteristics were analyzed through the HVI tool: Trash, UHM, SFC, Elg, Mic, +b, Rd, UI and STR. Cotton in hardened management system has less trash content when harvested with the Pro-12 VRS picker. The Pro-12 VRS picker, however, failed to preserve the intrinsic quality of the fiber.

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Section: Harvestmentioning

confidence: 51%

Mechanical harvest methods efficiency and its impacts on quality of narrow row cotton

Aguero¹,

Mion²,

Baraviera³

et al. 2018

Afr. J. Agric. Res.

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“…Incrementos nesse atributo são frequentemente relacionadas a variações na produtividade das culturas exigentes como o algodoeiro, cultivado no Cerrado (Freddi et al, 2014). Contudo a produtividade média de grãos (PG), nos dois anos de cultivo, foi de 5.571 kg ha -1 .…”

Section: Resultsunclassified

Redes neurais artificiais na predição da produtividade de milho e definição de sítios de manejo diferenciado por meio de atributos do solo

et al. 2015

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O entendimento dos fatores que influenciam a produtividade é essencial para o sucesso produtivo e para adoção de manejo diferenciado em sítios específicos. Na busca de alternativas para predizer a produtividade de grãos de milho a partir de atributos do solo, uma alternativa consiste no uso de redes neurais artificiais (RNAs). Diante disso, o presente estudo teve por objetivo avaliar a eficácia de adoção de atributos do solo por interface da análise de regressão, e das RNAs no estabelecimento de sítios de manejo diferenciado e predição da produtividade de grãos de milho, “segunda safra”, em solos de cerrado. Os dados foram obtidos em uma área de 41,76 ha, cultivada em 2010 e 2011. Apesar de demandar maior tempo de construção e processamento em relação à regressão linear, a adoção de RNAs permite melhor predição da produtividade de grãos. Em consonância ao estabelecimento de sítios específicos de manejo diferenciado do solo, a partir dos atributos teor de argila, capacidade de troca de cátions, matéria orgânica do solo e saturação de bases.

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“…Maturity which is expressed as the percent of harvested yield obtained on the first picking was positively correlated with picker efficiency, but negatively correlated with picking energy (Corley, 1970). Industrial demand for fiber length is higher than 28 mm (Freddi et al, 2014). A cotton-picker operation scheduling system (CPOSS) which is a WebGIS based management software, was developed for dispatching machines and labours and guide the labours to the target field.…”

Section: Other Aspects Of Mechanical Pickingmentioning

confidence: 99%

Multiple Attributed Parametric Review Study on Mechanical Cotton (Gossypium hirsutum L.) Harvesters

Chandel¹,

Sharma²

2022

JAS

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Crop characteristics of cotton are crucial to identify the important crop attributes like plant height, canopy width, sympods and monopods distribution, row spacing which affects the performance of mechanical harvesters. The activity and effectiveness of most harvest aids, including desiccants is reduced by low temperature conditions. Trash content was observed to be lesser in cotton harvested by cotton picker than cotton harvested by cotton stripper. It was found that a maximum cotton yield of 1000 kg acre-1 was obtained for a cotton plant population ranging between 45,000 and 90,000 plants acre-1. Likewise, a minimum of 700 to 740 kg acre-1 was observed for a cotton plant population of 33,000 plants acre-1. In higher yielding cotton, cotton pickers recorded higher picking rate than cotton strippers. Picking/harvesting efficiency of cotton stripper with both finger and brush type mechanism was higher than the spindle type cotton picker. Picking efficiency of pneumatic picker was higher than the other types of picking mechanisms, but with lesser rate of picking capacity. Gin turnout of cotton was higher with cotton picker when compared with cotton stripper due to lesser trash content in picker harvested cotton. The horsepower requirement of cotton stripper ranged from ½ to ¼ horsepower and cost is about two-thirds of the price as compared with cotton picker. The scheduling and monitoring of various activities involved in cotton picking by using a suitable software model can increase the benefits of both growers and harvesting companies. The reduction in uniformity with roller gin-type lint cleaners ranged between 0.2 to 0.8%, which was lesser as compared with saw-type lint cleaners. Introducing mechanical harvesting has always been a decades-long process. In Turkey, it took 20 years and in Greece, this process took place very gradually over a 15-year period. Top cotton producing countries like India, Pakistan, China, Uzbekistan and other developing countries like Iran Paraguay are still not using machine harvesting. The introduction of mechanical cotton picker or stripper can help improve quality and quantity of cotton picking thereby giving more benefit to growers in developing countries and improving their socio-economic status. The most controversial issue raised by the introduction of the mechanical cotton harvester is great migration as the machines eliminated jobs and forced poor families to leave their homes and farms in search for urban jobs. Therefore Government policies towards cotton harvesting mechanization must include the alternative jobs, packages for dependent manual cotton pickers and their families.

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Saturação do Solo por Bases na Produtividade e Qualidade de Fibra do Algodoeiro

Cited by 5 publications

References 9 publications

Mechanical harvest methods efficiency and its impacts on quality of narrow row cotton

Mechanical harvest methods efficiency and its impacts on quality of narrow row cotton

Redes neurais artificiais na predição da produtividade de milho e definição de sítios de manejo diferenciado por meio de atributos do solo

Multiple Attributed Parametric Review Study on Mechanical Cotton (Gossypium hirsutum L.) Harvesters

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