Effects of Gynophore Breaking Resistance on Losses in Mechanized Peanut Harvesting

Ince, Ahmet; Güzel, Elif

doi:10.13031/2013.15189

Cited by 8 publications

(8 citation statements)

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“…Grotta et al (2008) avaliaram que não houve diferença na produtividade para as diferentes compactações, porém estes autores trabalharam com compactações abaixo de 1 MPa. Considerando que a resistência do ginóforo ao rompimento (GBR) pode estar relacionada com as perdas na colheita do amendoim (INCE;GUZEL, 2003), e que a mesma depende, dentre outros fatores, da estrutura do solo, é esperado que as perdas totais sejam maiores nas áreas I e IV (120 e 135 DAS, respectivamente) em relação às demais áreas, uma vez que estas duas áreas apresentaram valores médios de RMSP acima de 2 Mpa (Figura 4A).…”

Section: Methodsunclassified

Produtividade e perdas de amendoim em cinco diferentes datas de arranquio

Santos¹,

Silva²,

Bertonha³

et al. 2013

Rev. Ciênc. Agron.

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RESUMO -A colheita é momento crítico na produção do amendoim (Arachis hypogaea L.), porém, nesta operação as perdas são inevitáveis, podendo chegar, em alguns casos, a valores de até 30% da produtividade. O amendoim é cultivado em um curto período de tempo durante a reforma dos canaviais, o que proporciona melhor uso dos espaços agrícolas na região de Jaboticabal, SP. Objetivou-se com esta pesquisa definir a antecipação do arranquio do amendoim a partir da determinação da maturação. Realizou-se o arranquio do amendoim aos 120; 125; 130; 135 e 140 dias após a semeadura. Os resultados foram submetidos à análise de variância pelo teste F e quando houve significância das médias, aplicou-se o teste de Tukey a 5% de probabilidade, mediante uso do diagrama de caixas para as variáveis: maturação, teor de água das vagens e do solo, resistência mecânica do solo à penetração, perdas na colheita e produtividade. O diagrama de caixas mostrou-se eficiente para a avaliação univariada das variáveis analisadas do amendoim, criando excelentes condições de visualização do comportamento das mesmas. Recomenda-se iniciar o arranquio do amendoim aos 120 DAS. Palavras-chave:Amendoim. Plantas-maturação. Época de colheita. ABSTRACT -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 of 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.

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Section: Methodsunclassified

Produtividade e perdas de amendoim em cinco diferentes datas de arranquio

Santos¹,

Silva²,

Bertonha³

et al. 2013

Rev. Ciênc. Agron.

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“…Independent of region, the production results are directly affected by losses during the dug up, in most cases due to excess maturation caused by harvest delay, which encourages the weakening of gynophore and consequently the pods are retained in the soil. Ince and Guzel (2003) reported that soil water content at the time of digging contributes to gynophore weakening, resulting in an exponential increase in losses, since the extent of decrease of the soil water content reduces the tear resistance of the gynophore and consequently increase the total losses of harvest.…”

Section: Introductionmentioning

confidence: 99%

Quality of mechanized peanut digging in function of the auto guidance

Santos¹,

Kazama²,

Ormond³

et al. 2016

Afr. J. Agric. Res.

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Within the context of precision agriculture, the use of automatic guidance is without a doubt one of the most popular tools among farmers, however, are few producers of peanuts using this technology, the benefits from this technology can bring significant gains for culture even more when thinking about reducing the indices of losses in the digging. Thus, it objective was to evaluate the variability of quantitative losses of peanut mechanized digging with use the autopilot, using the Statistical Process Control. The treatments consisted of absence of autopilot use in sowing and digging, pilot's absence at sowing and presence in the digging, pilot use at sowing and absence in the digging and the pilot use in sowing and digging. In each treatment, 15 points of each variable was collected from distance of 50 m apart. Visible, invisible and total losses in the digging and parallelism were evaluated. The reduction of the plant material on the vibratory mat affected the levels of visible losses. Total losses are strongly correlated with the invisible losses. The use of the autopilot allows the operator to pay more attention to the digging operation improving the quality of the operation. The average error found between passes of the mechanized set using autopilot was 0.35 m. The variability of the losses as well as of parallelism was reduced when using the autopilot in two operations, providing a higher quality process.

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“…Therefore, the soil and pod water contents are interlinked and important indicators for the losses behavior. In this sense, INCE & GUZEL (2003) affirm that there is an exponential relation between gynophore breakdown resistance (GBR) and soil water content, so when water content decreases, GBR decreases and consequently the total losses in the harvest increases.…”

Section: Also Inmentioning

confidence: 86%

“…Among the conditions that influence the peanut digging, BRAGACHINI & PEIRETTI (2009) highlight the soil type and conditions, since peanuts produce pods below the soil surface. In this sense, the resistance of the gynophore to the rupture is an important factor to designate the losses in the peanut digging, being dependent on the structure and soil water content (INCE & GUZEL, 2003).Thus, textural differences of the soil related to the water content of the soil at the time of digging are primordial for the accomplishment of the operation, which needs to be carried out with the highest possible quality, aiming at the reduction of losses.…”

Section: Introductionmentioning

confidence: 99%

Statistical Control of Processes Aplied for Peanut Mechanical Digging in Soil Textural Classes

et al. 2017

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Thedigging of peanut, which has the pod production in the subsurface, is directly affected by soil conditions, physical or environmental characteristics, at the time of operation and may be the cause of unwanted losses. Therefore, the quality of the operation is very important for minimizing these losses. Thus, this study aimed to evaluate the quality of mechanizeddiggingoperation of peanut according to three soil textural classes(Sandy, Medium and Loamy) and their water content conditions at operation through statistical process control. The experiment was conducted at three locations in the state of São Paulo, Brazil, under sampling scheme arranged in tracks and 40 sampling points for each textural class of soil, using the mechanical digging variables as indicators of quality. We found that the mechanized digging operation in Sandy soil was the most critical, just meeting the specifications of quality indicators, reflecting higher losses and lower quality of the operation. Medium soil showed at the digginggood and homogeneous conditions in relation to water content in soil and pods, and because it has favorable characteristics it obtained the lower total losses and higher quality of operation. Loamy soil showed satisfactory quality, meeting the specifications as well, but with poorer quality than the Medium Soil.

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Effects of Gynophore Breaking Resistance on Losses in Mechanized Peanut Harvesting

Cited by 8 publications

References 0 publications

Produtividade e perdas de amendoim em cinco diferentes datas de arranquio

Produtividade e perdas de amendoim em cinco diferentes datas de arranquio

Quality of mechanized peanut digging in function of the auto guidance

Statistical Control of Processes Aplied for Peanut Mechanical Digging in Soil Textural Classes

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