Adubação nitrogenada do arroz de terras altas no Sistema Plantio Direto

Guimarães, C. M.; Stone, L. F.

doi:10.1590/s1415-43662003000200004

Cited by 12 publications

(20 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%

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%

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 average, previous upland rice had yielded 2,287 kg ha -1 and previous soybean 3,469 kg ha -1 , differing from each other at p < 0.05 (Table 3). According to Guimarães & Stone (2003), upland rice had higher yields when cultivated after soybean compared to grasses, they attributed it to increased nitrogen availability in this environment. Also, Filizadeh et al (2007) had 20% more yield, with previous soybean instead of previous rice.…”

Section: Resultsmentioning

confidence: 99%

Upland rice yield as affected by previous summer crop rotation (soybean or upland rice) and glyphosate management on cover crops

Nascente

Crusciol²,

Stone³

et al. 2013

Planta daninha

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The appropriate chemical management of cover crops in no-tillage aims to obtain greater benefits with its employment in agricultural systems. The objective of this study was to assess upland rice yield as affected by the previous summer crop, species and desiccation timing of cover crops by glyphosate. Sown cover crops were sown (November 2007), followed by rice in half of the experimental area and soybean in the other half (November 2008). After the harvesting of these crops, the same cover crops were sown again (March 2009) and followed by upland rice in the total area (November 2009). The experiment consisted of the combination of five cover crops (fallow, Panicum maximum, Brachiaria ruziziensis, B. brizantha and Pennisetum glaucum), four desiccation timings (30, 20, 10 and 0 days before rice sowing), and two antecedents of the summer crop (rice or soybean) under no-tillage system (NTS), plus two control treatments at conventional tillage system (CTS). Cover crops significantly affect rice grain yield and its components. There is a significant tendency to highest yield when cover crop desiccation is conducted farther from the rice sowing date (from 2,577.1 kg ha-1 - desiccation at rice sowing to 3,115.30 kg ha-1 - desiccation 30 days before rice sowing). Soybean as an antecedent of summer crop allows better upland rice yield (3,754 kg ha-1) than rice as an antecedent of summer crop (2,635 kg ha-1); fallow/soybean/fallow (4,507 kg ha-1) and millet/soybean/millet (4,765 kg ha-1) rotation at no-tillage system, and incorporated fallow /soybean/ incorporated fallow (4,427 kg ha-1) at conventional tillage system allow the highest rice yield; upland rice yield is similar at no-till (3,194 kg ha-1) and till system (2,878 kg ha-1).

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“…Entretanto, diferente do presente trabalho, Guimarães et al (2003), avaliando a influência do uso (isolado ou conjunto) de adubos verdes e da adubação Acta Sci. Agron.…”

Section: Resultsunclassified

Restos vegetais e adubação nitrogenada na micorrização e produtividade do arroz de terras altas em sistema plantio direto

et al. 2008

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Restos vegetais e adubação nitrogenada na micorrização e Restos vegetais e adubação nitrogenada na micorrização e Restos vegetais e adubação nitrogenada na micorrização e Restos vegetais e adubação nitrogenada na micorrização e produtividade do arroz de terras altas em sistema plantio direto produtividade do arroz de terras altas em sistema plantio direto produtividade do arroz de terras altas em sistema plantio direto produtividade do arroz de terras altas em sistema plantio direto RESUMO. O objetivo deste trabalho foi verificar a influência de restos vegetais e da adubação nitrogenada em cobertura na micorrização (colonização, número de esporos dos fungos micorrízicos arbusculares) e produtividade de grãos de arroz de terras altas em plantio direto. O experimento foi conduzido na Fazenda Experimental da Unesp/Campus de Ilha Solteira, município de Selvíria (Estado do Mato Grosso do Sul). Nas parcelas principais foram testadas as leguminosas: crotalária (Crotalaria juncea L.), guandu (Cajanus cajan L.) e a mucuna-preta (Stizolobium aterrimum Piper & Tracy) e as gramíneas: milho (Zea mays L.), milheto (Pennisetum americanum L.) e sorgo-granífero (Sorghum bicolor L.), mais o pousio (vegetação espontânea), como cobertura de solo. Nas subparcelas, após a semeadura do arroz, foi utilizada adubação nitrogenada em cobertura (zero e 75 kg ha -1 de N, na forma de uréia). A produtividade de grãos do arroz foi influenciada pelos restos vegetais, mas não pelas doses ou pela interação. O sorgo mostrou influência negativa sobre a produtividade do arroz. A adubação nitrogenada influenciou a esporulação, mas não a colonização micorrízica ou a produtividade de grãos, na época da colheita. Não houve correlação entre as variáveis estudadas.Palavras-chave: Oryza sativa L., adubos verdes, micorrizas arbusculares, cerrado.ABSTRACT. Plant residues and nitrogen fertilization on the mycorrhization and upland rice yield on no tillage system. The objective of this research was to verify the influence of plant residues and the nitrogen fertilization in covering on the mycorrhization (colonization and number of spores of the arbuscular mycorrhizal fungi), and grain yield of upland rice grown under a no tillage system. The experiment was conducted at the Experimental Farm Station of Unesp/Ilha Solteira Campus, at Selvíria (Mato Grosso do Sul State). In the main plots, the leguminous were tested: sun hemp (Crotalaria juncea L.), pigeon pea (Cajanus cajan L.) and velvet bean (Stizolobium aterrimum Piper & Tracy) and the grass: corn (Zea mays L.), millet (Pennisetum americanum L.) and grain sorghum (Sorghum bicolor L.), plus no planted area during the winter, as plant cover. In the subplots, after the rice sowing, the nitrogen fertilization in covering (zero and 75 kg ha -1 of N at the urea form) was used. The rice grain yield was influenced by the plant residues, but not for the N doses or the interaction. The sorghum grain showed negative influence on the rice productivity. The nitrogen fertilization influenced the number of spores, but not t...

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Adubação nitrogenada do arroz de terras altas no Sistema Plantio Direto

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

Upland rice yield as affected by previous summer crop rotation (soybean or upland rice) and glyphosate management on cover crops

Restos vegetais e adubação nitrogenada na micorrização e produtividade do arroz de terras altas em sistema plantio direto

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