Impact of Sprinkler Irrigation Amount and Rotation On Peanut Yield

Lamb, Marshall C.; Masters, Mark H.; Rowland, Diane; Sorensen, Ronald B.; Zhu, Huiling; Blankenship, R. D.; Butts, Christopher L.

doi:10.3146/pnut.31.2.0009

Cited by 32 publications

(22 citation statements)

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“…Observou-se a mesma tendência do experimento realizado na safra anterior (2008/2009), em que as perdas encontradas nas áreas colhidas com até 135 dias foram menores, e mais homogêneas, em relação à área colhida com 140 DAS. Lamb et al (2004) relataram que as Produtividade e perdas de amendoim em cinco diferentes datas de arranquio perdas no arranquio são estimadas em 8% da produção total, mas que podem chegar a 40% quando o arranquio é realizado além do ponto ótimo de colheita. Como no presente trabalho a maturação foi adequada à realização da colheita em todas as áreas avaliadas, ou seja, acima de 70%, as perdas totais encontradas foram de, no máximo, 12,7% (Figura 5A), corroborando com o que foi postulado por Lamb et al (2004) Analisando a produtividade bruta (Figura 5C) pode-se observar que nas áreas colhidas aos 130 e 140 DAS foram superiores às das demais áreas.…”

Section: Methodsunclassified

“…Lamb et al (2004) relataram que as Produtividade e perdas de amendoim em cinco diferentes datas de arranquio perdas no arranquio são estimadas em 8% da produção total, mas que podem chegar a 40% quando o arranquio é realizado além do ponto ótimo de colheita. Como no presente trabalho a maturação foi adequada à realização da colheita em todas as áreas avaliadas, ou seja, acima de 70%, as perdas totais encontradas foram de, no máximo, 12,7% (Figura 5A), corroborando com o que foi postulado por Lamb et al (2004) Analisando a produtividade bruta (Figura 5C) pode-se observar que nas áreas colhidas aos 130 e 140 DAS foram superiores às das demais áreas. Considerando-se estas áreas, observa-se que perdas totais do arranquio representaram 4,6 e 11,2% da produtividade bruta aos 130 e 140 DAS, respectivamente.…”

Section: Methodsunclassified

“…As perdas visíveis (vagens encontradas sobre o solo) relatadas na bibliografia variam entre 0,7 e 14,8% e as perdas invisíveis (vagens encontradas sob o solo), de 1,9 a 34,1% (SANTOS et al, 2010). Nos Estados Unidos, Lamb et al (2004) estimaram média de perdas no arranquio de 8 a 40%, enquanto que Rowland et al (2006) relataram perdas de até 50%. Diante deste elevado índice de perdas, a otimização do projeto dos arrancadores de amendoim pode resultar em maior eficiência operacional, mas ainda assim, é fundamental a determinação de perdas na colheita para a manutenção dessa eficiência (BUTTS et al, 2009;PADMANATHAN et al, 2006).…”

Section: Introductionunclassified

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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

Section: Introductionunclassified

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Produtividade e perdas de amendoim em cinco diferentes datas de arranquio

Santos¹,

Silva²,

Bertonha³

et al. 2013

Rev. Ciênc. Agron.

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“…Prior to that time peanuts received full irrigation either from rainfall or an irrigation system mounted under each roof. Irrigation was optimized using the Irrigator Pro expert system (Davidson, et al, 1998;Lamb et al, 2004). During the last 4 weeks of the growing season, pod samples were collected periodically by digging several plants exhibiting varying degrees of stress based on visual assessment.…”

Section: Methodsmentioning

confidence: 99%

Relationship Between Kernel Moisture Content and Water Activity in Different Maturity Stages of Peanut

Dorner¹

2008

Peanut Science

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The water activity (a w ) and kernel moisture content (KMC) of individual Florunner cv. peanut kernels representing five different maturity stages were measured during a period of lateseason drought stress leading up to normal harvest time. Curves were generated describing the relationship between a w and KMC for yellow 1, yellow 2, orange, brown, and black maturity stages as determined by the peanut hull scrape method. As peanuts matured, the KMC for a given a w decreased. KMC in the most immature yellow 1 stage was extremely variable at higher a w levels, indicative of the rapidly changing composition of kernels at that stage. The variation in KMC at high a w decreased with increasing maturity. Equations to predict KMC for given a w showed that KMC varied greatly among maturity stages, particularly at higher a w . For example, at an a w of 0.99 the predicted KMCs for yellow 1 (least mature) and black (most mature) stages were 62.7 and 30.7%, respectively. The degree of variation among stages decreased as a w decreased in response to drought stress. Because preharvest aflatoxin contamination of peanuts is highly dependent on both the maturity stage of peanuts during periods of late-season drought stress and the resulting a w of kernels, these KMCa w relationships can be utilized in efforts to breed peanuts for reduced susceptibility to aflatoxin contamination by focusing on genotypes that can maintain higher water activities during such lateseason drought periods.

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“…A major problem facing producers in the region is maintaining crop yield, while maximizing current water resources through efficient water use. Lamb et al (1997Lamb et al ( , 2004Lamb et al ( , 2007 reported significant increases in yield, quality, net returns, and a reduction in aflatoxin contamination for peanuts produced under irrigation compared to dryland peanut production systems. These findings illustrate the importance of irrigation and demonstrate the potential negative impacts future water restrictions may have on growers in the region.…”

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confidence: 99%

Interaction of Tillage System and Irrigation Amount on Peanut Performance in the Southeastern U.S

et al. 2012

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A five-year study to investigate the potential interaction of conservation tillage with reduced irrigation amounts was conducted near Dawson, GA on peanut (Arachis hypogaea L.). Conventional tillage was compared to two conservation tillage programs (wide-strip and narrow-strip tillage) under four irrigation levels (100, 66, 33, and 0% of a recommended amount). Peanut yield did not exhibit a tillage by irrigation interaction as expected, although the main effects of irrigation and tillage were each significant by year due to weather variations. Peanut yield in narrow-strip tillage or wide-strip tillage were individually superior to conventional tillage in three seasons out of five, however only in one year did both conservation tillage systems outperform the conventional system. No detrimental effects on yields could be attributed to conservation tillage. Peanut quality and digging loss were dependent on the tillage by year effect as well as the main effect of irrigation. Irrigation increased total sound mature kernels (TSMK) 2% versus non-irrigated (0% irrigation level); tillage was not significant each year of the study but increased TSMK 2% in three of five years. Digging losses were greater in plots with increased yield potential such as those receiving irrigation. Net economic returns revealed a moderate trend towards sustained profitability under reduced irrigation levels through narrow-strip tillage and to a lesser extent, wide-strip tillage. Under conventional tillage systems, returns decreased with decreasing amounts of irrigation applied.

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Impact of Sprinkler Irrigation Amount and Rotation On Peanut Yield

Cited by 32 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

Relationship Between Kernel Moisture Content and Water Activity in Different Maturity Stages of Peanut

Interaction of Tillage System and Irrigation Amount on Peanut Performance in the Southeastern U.S

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