Produtividade de grãos e exportação de nutrientes de cultivares de arroz irrigadas por aspersão em conseqüência da época de semeadura

Crusciol, Carlos Alexandre Costa; Soratto, Rogério Peres; Arf, Orivaldo

doi:10.1590/s0006-87052007000200008

Cited by 4 publications

(2 citation statements)

References 4 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Um aspecto importante é que a disponibilidade de água no solo favorece a translocação dos fotoassimilados para os grãos, afetando a formação dos grãos e os teores de nutrientes (Crusciol et al, 2007).…”

Section: /7unclassified

Desempenho agronômico de cultivares de arroz sob sistema de irrigação por aspersão e inundação

Streck

Aguiar

Facchinello

et al. 2019

Agraria

View full text Add to dashboard Cite

RESUMO: Atualmente, são necessárias práticas agronômicas que visem melhorar a eficiência do uso da água nas lavouras de arroz irrigado. O estudo teve por objetivo avaliar cultivares de arroz irrigado em sistema de irrigação por inundação e aspersão com uso de pivô linear. O experimento foi conduzido na Embrapa, no Capão do Leão, Rio Grande do Sul (latitude S 31º48'49" e longitude O 52º28'20"), nas safras 2011/12 e 2013/14. Implementou-se os sistemas de irrigação por inundação com lâmina de água permanente e o sistema de irrigação por aspersão com pivô linear. Foram avaliados os genótipos BRS Atalanta, BRS Querência, BRS Pampa, BR-IRGA 410, BR-IRGA 409, BRS Sinuelo CL, BRS Fronteira, BRS 7 'Taim', BRS Pampeira e AB 10101 CL. Os parâmetros avaliados foram: produtividade de grãos, dias até a floração, estatura de plantas e percentual de grãos inteiros após o beneficiamento. A cultivar BRS Pampa destaca-se na irrigação por aspersão, enquanto que, no sistema de inundação a cultivar BRS Pampeira apresenta maior potencial de produtividade. O sistema de irrigação por aspersão com o uso de pivô linear ocasiona o aumento do ciclo até a floração, redução na estatura de plantas e redução média de 32% na produtividade de grãos em comparação com o sistema inundado em arroz irrigado.Palavras-chave: eficiência de irrigação; Oryza sativa L.; pivô linear; produtividade de grãos Agronomic performance of rice cultivars under sprinkler and flood-irrigation system ABSTRACT: Currently, agronomic practices needed to improve the water efficiency use in irrigated rice crops. The study aimed to evaluate rice cultivars in flood and sprinkler-irrigated system with linear pivot. The experiment was conducted at Embrapa, in Capão do Leão, Rio Grande do Sul (31º48'49"S, 52º28'20"W), in 2011/12 and 2013/14 crop season. It was implemented in the permanent flood-irrigation systems with water blade and sprinkler-irrigation system with linear pivot. Were evaluated the genotypes BRS Atalanta, BRS Querência, BRS Pampa, BR IRGA 410, BR IRGA 409, BRS Sinuelo CL, BRS Fronteira, BRS 7 'Taim', BRS Pampeira and AB 10101 CL. The parameters evaluated were: grain yield, days to flowering, plant height and percentage of entire grains after industrial processing. The cultivar BRS Pampa stands out in sprinkler-irrigation, while in the flood-irrigation system the cultivar BRS Pampeira presents greater yield potential. The sprinkler-irrigation system with the linear pivot results in an increase in cycle to flowering, reduction in plant height and a 32% reduction in a grain yield compared to flood-irrigation in irrigated rice.Desempenho agronômico de cultivares de arroz sob sistema de irrigação por aspersão e inundação Rev. Bras.

show abstract

Section: /7unclassified

Desempenho agronômico de cultivares de arroz sob sistema de irrigação por aspersão e inundação

Streck

Aguiar

Facchinello

et al. 2019

Agraria

View full text Add to dashboard Cite

show abstract

“…In general, the cultivars that exhibited greater nutrient content in the grains obtained greater values for nutrient removal per ton of grain produced; this shows that, in addition to yield, the nutrient concentration in the grain is a fundamental factor that determines the amount of nutrients removed. Thus, along with high yields, if there is an increase in the nutrient concentration in the grain, there will consequently be the greater removal of nutrients, and fertilization levels should be increased (Crusciol et al, 2007).…”

Section: Brs Primavera Maravilhamentioning

confidence: 99%

Macronutrient Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Crusciol

Fernandes

Filho

et al. 2016

Rev. Bras. Ciênc. Solo

Self Cite

View full text Add to dashboard Cite

Modern high-yielding rice cultivars possibly take up and remove greater quantities of macronutrients than traditional and intermediate cultivars. This study was carried out with the aim of evaluating the extraction and removal of macronutrients by upland rice cultivars. These information are of utmost importance for the correct fertilizer management. The treatments consisted of three upland rice cultivars (Caiapó, a traditional type; BRS Primavera, an intermediate type; and Maravilha, a modern type). Macronutrient accumulation by rice cultivars up to the end of tillering (46 DAE) accounted for only 25 % of the total N and P, and between 35-45 % of the total K, Ca, Mg, and S; after that time, accumulation was intensified. In all of the cultivars, the period of greatest nutrient uptake occurred from 45 to 60 DAE for K, Ca, Mg, and S, and after 65 DAE for N. Phosphorus was taken up at greater rates at 70 DAE by the cultivar BRS Primavera and after 90 DAE by the cultivars Caiapó and Maravilha. The cultivars of the traditional (Caiapó) and intermediate (BRS Primavera) groups took up greater amounts of Ca (143 kg ha ); however, this was lower than the grain yield of cultivar BRS Primavera (6,010 kg ha -1 ). Cultivars with greater yield levels did not necessarily exhibit a greater uptake and removal of nutrients per area, even if they had greater capacity for conversion of the nutrients taken up into the biomass.

show abstract

Micronutrient and Silicon Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Crusciol

Filho

Fernandes

et al. 2016

Rev. Bras. Ciênc. Solo

Self Cite

View full text Add to dashboard Cite

Upland rice cultivars manifest different nutritional demands. A field study was conducted to quantify the extraction, distribution, and removal of micronutrients and silicon by the upland rice cultivars. The experiment was arranged in a randomized complete block-split plot design. Plots consisted of three cultivars (Caiapó -traditional, BRS Primavera -intermediate, and Maravilha -modern) of upland rice. Split-plots consisted of plant samplings, which occurred at 39, 46, 55, 67, 75, 83, 92, 102, 111, 118, and 125 days after emergence (DAE). Up to the end of tillering (46 DAE), all cultivars exhibited low demand for most micronutrients and Si, and took up less than 24 % of the total B, Cu, and Si, but around 31 % of the total Zn. The period of greatest uptake of micronutrients and Si occurred from 65 to 80 DAE in the Caiapó and BRS Primavera cultivars, and after 80 DAE in the Maravilha cultivar. The Caiapó and BRS Primavera cultivars took up their necessary demand of B, Mn, and Fe in the first 98 DAE and Cu, Zn, and Si up to 105 DAE, but the Maravilha cultivar took up these nutrients for two to three weeks longer. The quantities of micronutrients and Si taken up by cultivars Caiapó, BRS Primavera, and Maravilha did not exhibit large differences, and these cultivars took up between 98-135 g B, 103-110 g Cu, 1,157-1,460 g Fe, 1,278-1,424 g Mn, 240-285 g Zn, and 111-124 kg Si per hectare. The BRS Primavera cultivar showed greater removal of nutrients, with average amounts per hectare of 19.7 g B, 25.8 g Cu, 200 g Fe, 234.2 g Mn, 102.4 g Zn, and 32.6 kg Si, while the other cultivars removed smaller amounts per hectare (14.4 g B, 19.9 g Cu, 160.7 g Fe, 136.3 g Mn, 67 g Zn, and 21.9 kg Si). The BRS Primavera showed a greater removal of nutrients because it has a higher yield and allocates a greater quantity of nutrients to the panicles.

show abstract

Produtividade de grãos e exportação de nutrientes de cultivares de arroz irrigadas por aspersão em conseqüência da época de semeadura

Cited by 4 publications

References 4 publications

Desempenho agronômico de cultivares de arroz sob sistema de irrigação por aspersão e inundação

Desempenho agronômico de cultivares de arroz sob sistema de irrigação por aspersão e inundação

Macronutrient Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Micronutrient and Silicon Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Contact Info

Product

Resources

About