Efeito da irrigação, épocas de corte da forragem e doses de nitrogênio sobre o rendimento de sementes de milheto

Jornada, João Batista Jornada da

doi:10.1590/s0101-31222005000200008

Cited by 12 publications

(18 citation statements)

References 6 publications

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“…Similar results were found by other authors who applied N sources to crops such as wheat (Meade et al 2011), maize (Fischer et al 1993) and sorghum (Ellen & Spiertz 1980). It can be explained by the high N content of PSC, what contributes to the increase in the number of grains per plant, as observed in other studies with millet (Jornada et al 2005) and rice (Guimarães & Stone 2003).…”

Section: Resultssupporting

confidence: 89%

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Pig slurry composting as a nitrogen source in proso millet crop

Silva

Basso

Muraro

et al. 2016

Pesqui. Agropecu. Trop.

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With the intensification of pig farming systems, in Brazil, the production of swine waste has increased considerably, leading to water and soil contamination, due to its improper release. Pig slurry composting is an alternative that can be used in order to avoid or reduce negative impacts, especially for producers with physically limited farm areas, or those who intend to increase the number of animals in their production units. This study aimed at evaluating the influence of pig slurry compost doses on the agronomic characteristics and grain yield of proso millet. A randomized blocks design experiment was installed with four replications and five treatments: control without fertilization, control with mineral fertilizer (NPK) and pig slurry compost doses (4.0 Mg ha-1, 8.0 Mg ha-1; 12.0 Mg ha-1). The pig slurry composting increased the dry matter yield, number of grains per plant and grain yield of proso millet, when compared to the control with or without mineral fertilizer. The proso millet yield, at the doses of 8.0 Mg ha-1 and 12.0 Mg ha-1 of pig slurry, was superior than for both the control without fertilization and the control with the recommended mineral fertilizer, with the latter reaching a maximum agronomic efficiency at the dose of 8.0 Mg ha-1.

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Section: Resultssupporting

confidence: 89%

“…This is likely due to the greater N availability at the time of panicle differentiation. During the proso millet harvest, Jornada et al (2005) observed that regardless of the nitrogen dose applied, there was an increase in panicle length.…”

Section: Resultsmentioning

confidence: 96%

Pig slurry composting as a nitrogen source in proso millet crop

Silva

Basso

Muraro

et al. 2016

Pesqui. Agropecu. Trop.

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“…In the first year, when the experiment was carried out, the cuts were applied later than in the second year. According to Jornada et al (2005), the late cuts in relation to the cycle of forage grasses can have negative effects on productivity of seeds, possibly by reducing the photosynthetic area and eliminating reproductive parts of the tillers.…”

Section: Resultsmentioning

confidence: 99%

“…Factors such as the number, period, and height of the cuts influence the increase in reproductive tiller concentration, the number of inflorescences, and therefore, the final seed production (Souza, 2001). However, each species has a different reaction to the cuts, which may result in an increase, reduction, or no effect on seed production (PROD) (Jornada et al, 2005). According to Scheffer-Basso et al (2007), the largest PROD in P. dilatatum was obtained with six cuts before deferral, providing a larger number of inflorescences per plant.…”

Section: Introductionmentioning

confidence: 99%

Management of consecutive cuts in the production and quality of wintergreen paspalum seeds

et al. 2016

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-The objective of this study was to evaluate the practice of consecutive cuts in the production and quality of Paspalum guenoarum seeds of the "Azulão" ecotype. The experimental design used was in completely randomized blocks with four replications. The treatment included three cuts in succession: zero cut, one cut, two cuts, and three cuts. The variables were: number of total tillers/plant; number of vegetative tillers/plant; number of reproductive tillers/plant; percentage of reproductive tillers; number of racemes/inflorescence; weight of thousand seeds; number of seeds/inflorescence; seed production; forage dry matter; water content of seeds; germination; first germination count; and germination speed index. The largest seed production was obtained with zero cut (850.3, first year and 719.4 kg/ha -1 , second year) and one cut (794.4, first year and 627.3 kg/ha -1 , second year) with no statistical difference between them. The largest germination percentage was seen with the application of zero (71.0%, first year and 79.3%, second year) and one cut (69.3%, first year and 75.0%, second year). There was a decrease in the production and quality of the seeds of the second cut, especially during the first year of evaluation. The total tillers, the percentage of tillers that went through the reproductive stage, and the number of reproductive tillers are the variables that are most highly correlated with seed production.

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“…Outros estudos, no entanto, constataram que a adubação com N aumentou a produtividade de sementes (Condé & Garcia, 1988;Sangakkara, 1988;Joaquin et al, 2001). A maioria dos estudos, entre os quais se destacam os de Gobius et al (2001), Jornada et al (2005) (Santos et al, 2006) de textura muito arenosa (superior a 70%), e o clima é do tipo Cfa, conforme a classificação de Köppen.…”

Section: Introductionunclassified

Nitrogênio e época de colheita nos componentes da produtividade de forragem e sementes de capim-mombaça

Neto

Boleta

Júnior

et al. 2010

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito de doses de nitrogênio e de épocas de colheita de sementes sobre componentes de produtividade de forragem e sementes de capim-mombaça (Panicum maximum cultivar Mombaça). Os tratamentos foram constituídos das doses 0, 75, 150, 225 e 300 kg ha -1 de N e da colheita das sementes aos 8 e 14 dias após a antese. Utilizou-se o delineamento em blocos ao acaso em parcelas subdivididas, com quatro repetições. A produtividade de forragem e de lâmina foliar foi afetada positiva e linearmente pelas doses de N. Os caracteres densidade de perfilhos com panículas, número de sementes aparentes e de sementes puras por panícula, e produtividade de sementes aparentes e puras foram afetados pela interação entre doses de N e época de colheita. Observou-se correlação positiva do número de sementes por panícula e do peso de mil sementes com as produtividades de sementes aparentes e puras. As maiores produtividades de sementes aparentes e puras -89,1 e 28,2 kg ha -1 , respectivamente -foram obtidas com as doses de 241,2 e 250,0 kg hade N, aos oito dias após a antese.Termos para indexação: Panicum maximum, florescimento, gramínea tropical, sementes de forrageiras. Nitrogen and harvesting time on the components of forage and seed yield of guineagrass cultivar 'Mombaça'Abstract -The objective of this work was to evaluate the effects of nitrogen doses and harvesting time, on the yield components of forage and seed production of Mombaça Guineagrass (Panicum maximum cultivar Mombaça). The treatments were composed by N doses (0, 75, 150, 225 and 300 kg ha -1 ) and two harvesting times (8 and 14 days after anthesis). The experimental design was the randomized complete block in a split-plot arrangement with four replicates. Forage and leaf lamina yield were positively and linearly affected by N doses. The characters density of fertile tillers, apparent number of seeds and number of pure seeds per panicle, and apparent and pure seed yields were significantly affected by the interaction between N doses and harvesting time. Positive correlation was observed between apparent or pure seed yield and number of seed per panicle and weight of one thousand seeds. The highest apparent seed yield of 89.1 kg ha -1 and pure seed yield of 28.2 kg ha -1were observed on nitrogen doses at 241.2 and 250.0 kg ha -1 , respectively, at 8 days after anthesis.

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Efeito da irrigação, épocas de corte da forragem e doses de nitrogênio sobre o rendimento de sementes de milheto

Cited by 12 publications

References 6 publications

Pig slurry composting as a nitrogen source in proso millet crop

Pig slurry composting as a nitrogen source in proso millet crop

Management of consecutive cuts in the production and quality of wintergreen paspalum seeds

Nitrogênio e época de colheita nos componentes da produtividade de forragem e sementes de capim-mombaça

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