Produtividade e qualidade industrial do arroz de terras altas em função da disponibilidade hídrica e adubação

Artigiani, Angela Cristina Camarim Alvarez; Crusciol, Carlos Alexandre Costa; Arf, Orivaldo; Alvarez, Rita de Cássia Félix; Nascente, Adriano Stephan

doi:10.1590/s1983-40632012000300011

Cited by 15 publications

(23 citation statements)

References 14 publications

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“…The lowest percentages of 38.42 and 39.67% vitreous grains were found in plants without fungicides, in the combinations of 120 kg ha -1 N with 6,000 kg ha -1 Ca and Mg silicate and of 180 kg ha -1 N with 3,000 kg ha -1 silicates, respectively. Similar results were reported by Artigiani et al (2012) and Reis et al (2008), who did not find that the application of these silicates affected milling yield and whole grains. A possible explanation is that the Si available in the soil may have supplied the needs of the rice plants (Artigiani et al, 2012).…”

Section: Resultssupporting

confidence: 90%

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Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates

Oliveira

Marchesan

David

et al. 2019

Pesq. agropec. bras.

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How to cite OLIVEIRA, L.M. de; MARCHESAN, E.; DAVID, R. de; WERLE, I.S.; ARAMBURU, B.B.; DONATO, G.; SILVA, A.L da; COSTA, I.F.D. da. Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates.Abstract -The objective of this work was to evaluate the effects of fertilization with nitrogen topdressing and silicates, as well as of the use of fungicides, on the occurrence of rice blast on panicles, milling yield, and whole grains, vitreous grains, and chalky kernels in a flood-irrigated rice cultivar sensitive to the disease. Two experiments were conducted in a randomized complete block design, in a 4×4×2 factorial arrangement, with four replicates: in experiment 1, four doses of nitrogen × four doses of calcium and magnesium silicate on soil × with and without fungicides; and, in experiment 2, four doses of nitrogen × four doses of potassium silicate applied on leaves x with and without fungicides. At the doses above 60 kg ha -1 nitrogen without fungicides, there was an increase of rice blast severity on panicles, a decrease in the percentage of whole and vitreous grains, and an increase in chalky kernels and chalky area. The greatest effects of silicates occurred without fungicides. Fungicide use reduced the severity of rice blast on panicles. Milling yield ranged from 60 to 70% in both experiments. The control of rice blast with fungicides maintains high rice grain quality, milling yield, and percentages of whole and vitreous grains.

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Section: Resultssupporting

confidence: 90%

“…Similar results were reported by Artigiani et al (2012) and Reis et al (2008), who did not find that the application of these silicates affected milling yield and whole grains. A possible explanation is that the Si available in the soil may have supplied the needs of the rice plants (Artigiani et al, 2012).…”

Section: Resultssupporting

confidence: 90%

Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates

Oliveira

Marchesan

David

et al. 2019

Pesq. agropec. bras.

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“…Na literatura, vários autores têm constatado que a massa de 100 grãos é pouco influenciada pelo fornecimento de N (Farinelli et al 2004;Fidelis et al 2012;Fonseca et al, 2012). Por outro lado, Artigiani et al (2012) relataram que houve redução na massa de 100 grãos de arroz de terras altas com o aumento das doses de N.…”

Section: Resultsunclassified

Mecanismos de abertura do sulco e da adubação nitrogenada em arroz de terras altas

Nascimento¹,

Arf

Alves

et al. 2013

Rev. Ceres

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Furrow opening implements and nitrogen fertilization in upland riceThe rice crop has poor adaptation to the no till (NT) system because of the higher topsoil compression caused by the intense machine trafficking and reduced tillage operations. In this case, the implement used for opening furrows for fertilizer application is important to facilitate the root penetration and increase soil porosity. This study evaluated the performance and yield of upland rice in no till system as a function of the implements used for fertilizer application at sowing and N rates in Selvíria (MS), Brazil. The experiment was arranged in a randomized block design, using a 2 x 6 factorial arrangement, consisting of two fertilizer distribution implements (chisel plow and double disc plough) and six rates of topdress nitrogen (0, 25, 50, 75, 100 and 125 kg ha -1 ) with four replicates. The implements of fertilizer application did not affect the rice yield. The chisel plow provided higher plant height and number of filled grains in the two years of cultivation. The topdress nitrogen application affected some agronomic characteristics, production and milling yield components; the rice yield increased up to of the rate 69 kg ha -1 of N, in the first crop year.Key words: Oryza sativa L., double disc plough, chisel plow, no-tillage. A cultura do arroz adapta-se pouco ao sistema plantio direto (SPD) em razão da maior compactação da camada superficial do solo, devido ao intenso tráfego de máquinas e não mobilização do solo. Nesse caso, o mecanismo utilizado na semeadora para a abertura dos sulcos com a finalidade de deposição do adubo pode ter grande importância para facilitar a penetração das raízes e aumentar a porosidade do solo. Diante disso, propôs-se este estudo com o objetivo de avaliar o desenvolvimento e a produtividade do arroz de terras altas em sistema plantio direto, em razão de mecanismos de distribuição do adubo na semeadura e de doses de N em cobertura, em Selvíria, Mato Grosso do Sul. O delineamento experimental utilizado foi em blocos casualizados, utilizando-se um esquema fatorial 2 x 6, constituído por mecanismos de distribuição do adubo (haste escarificadora e disco duplo) e de doses de N em cobertura (0, 25, 50, 75, 100 e 125 kg ha -1 ), com quatro repetições. Concluiu-se que os mecanismos de distribuição do fertilizante não interferiram na produtividade de grãos do arroz de terras altas; o mecanismo do tipo haste escarificadora promoveu maior altura de plantas e maior número de grãos cheios nos dois anos de cultivo; a aplicação de nitrogênio em cobertura interferiu em algumas características agronômicas, produtivas e em componentes de rendimento de engenho; a produtividade do arroz aumentou até a dose de 69 kg ha -1 de N, no primeiro ano de cultivo. Palavras-chave:Oryza sativa L., disco duplo, haste escarificadora, plantio direto.

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“…Current studies prioritize actions to consolidate the presence of the crop in grain-production systems in Cerrado regions, with satisfactory yields Artigiani et al, 2012). This region is characterized by the predominance of soils with low natural fertility and the occurrence of dry spells that cause water deficiency to the crop (Bastos & Ferreira, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…According to studies conducted to evaluate the use of silicon in agriculture, the rice crop shows increase in the number of leaves and in the number of spikelets per panicle, higher plant height and higher content and accumulation of silicon in plant shoots (Artigiani et al, 2012;Yogendra et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Silicon fertilization and soil water tensions on rice development and yield

Oliveira

Koetz

Bonfim-Silva

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe cultivation of upland rice (Oryza sativa) in Brazil occurs mainly in the Cerrado, a region with adverse weather conditions. The use of silicon in its cultivation becomes important, since this nutrient provides higher rigidity, lower transpiration and higher resistance to dry spells in rice plants. The objective of the present study was to evaluate the effect of silicon fertilization and soil water tensions on upland rice development and yield in a Cerrado Oxisol. A 5 x 5 fractionated factorial with five soil water tensions (0, 15, 30, 45 and 60 kPa) and five silicon doses (0, 120, 240, 480 and 960 mg dm -3 ) was used, which were distributed in a randomized block design, with four replicates. Plant height, number of tillers, number of panicles, number of grains per panicle, numbers of full and empty grains and percentage of empty grains were evaluated. Silicon fertilization promotes increased tillering in rice plants at the dose of 960 mg dm , respectively. The increase in soil water tensions reduced plant height and the number of full grains, and increased the percentage of empty grains of upland rice.Adubação silicatada e tensões de água no solo no desenvolvimento e rendimento do arroz R E S U M O O cultivo de arroz (Oryza sativa) de terras altas no Brasil ocorre principalmente em área de Cerrado, região que apresenta condições climáticas adversas. A utilização do silício em seu cultivo torna-se importante de vez que este nutriente proporciona maior rigidez, menor transpiração e maior resistência a veranicos em plantas de arroz. No presente estudo, objetivou-se avaliar o efeito da adubação silicatada e tensões de água do solo no desenvolvimento e rendimento de arroz de terras altas em Latossolo Vermelho do Cerrado. Utilizou-se esquema fatorial 5 x 5 fracionado com cinco manejos de irrigação baseados nas tensões de água no solo (0, 15, 30, 45 e 60 kPa) e cinco doses de silício (0, 120, 240, 480 e 960 mg dm -3 ) as quais foram distribuídas segundo delineamento de blocos ao acaso, com quatro repetições. Foram avaliados: altura de plantas, número de perfilhos, número de panículas, número de grãos por panícula, número de grãos cheios e chochos e porcentagem de grãos chochos. Adubação silicatada promove o aumento do perfilhamento em plantas de arroz com a dose de 960 mg dm . Ocorreu um decréscimo de produção de perfilhos e número de panículas com a aplicação de silício até as doses de 460 e 490 mg dm -3 , respectivamente. O aumento das tensões de água no solo reduziu a altura e o número de grãos cheios, e aumentou a porcentagem de grãos chochos de arroz de terras altas.

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Produtividade e qualidade industrial do arroz de terras altas em função da disponibilidade hídrica e adubação

Cited by 15 publications

References 14 publications

Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates

Occurrence of rice blast on and grain quality of irrigated rice fertilized with nitrogen and silicates

Mecanismos de abertura do sulco e da adubação nitrogenada em arroz de terras altas

Silicon fertilization and soil water tensions on rice development and yield

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