Yield, Potassium Uptake and Use Efficiency in Upland Rice Genotypes

Fageria, N. K.; Gheyi, H.R.; Carvalho, M. C. S.

doi:10.12702/ii.inovagri.2014-a607

Cited by 18 publications

(20 citation statements)

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“…Bertossi et al (2013) report increasing values for phosphorous usage efficiency with increasing dosages of P, varying from 2.98 to 17.11 mg dry matter per g P applied, for dosages in the range of 0 to 500 mg P kg -1 . However, most research into N, P and K for various crops (FAGERIA;SANTOS;MORAES, 2010;SILVA et al, 2011;GUELFI-SILVA et al, 2013) show that there is a reduction in P usage with increases in the applied dosage, due to greater losses in the soil-plant-atmosphere system.…”

Section: First Cropmentioning

confidence: 99%

Productive characteristics, nutrition and agronomic efficiency of polymer-coated MAP in lettuce crops

Chagas

Emrich

Guelfi

et al. 2015

Revista Ciência Agronômica

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-In contrast to enhanced-efficiency nitrogen fertilisers, principally urea, phosphate fertilisers have been little studied and the available information is limited. The aim of this work therefore was to evaluate the productive and nutritional characteristics and the agronomic efficiency of a polymer-coated MAP fertilizer on two subsequent lettuce crops. The experiment was carried out in a greenhouse, in pots with a capacity of 4 kg, filled with a dystrophic yellow Latosol of a clayey texture. The experimental design was completely randomised and the treatments arranged in a 2 x 5 factorial scheme: two sources of phosphorus (P) (MAP and polymer-coated MAP), applied to the plots in five dosages (0, 100, 200, 400, 800 mg P 2 O 5 kg -1 ) with three replications. The results showed that the polymer-coated MAP increased the efficiency of the phosphate fertilizer in both lettuce crops, improving utilisation of the residual phosphorus. The agronomic efficiency of fertilization decreases with the increases in applied phosphorus. The production and nutritional characteristics of the lettuce were influenced by the levels of P 2 O 5 and the use of MAP with polymers. Higher values for dry and fresh weight and for the accumulation of P in the first crop occurred with the use of polymer-coated MAP at dosages of 506.9, 450.1 and 522.8 mg kg -1 P 2 O 5 .Key words: Phosphate fertilizer. Residual effect. Lactuca sativa L.RESUMO -Contrariamente aos fertilizantes nitrogenados de eficiência aumentada, principalmente a ureia, os fertilizantes fosfatados foram pouco estudados e as informações disponíveis são limitadas. Dessa forma, objetivou-se com o presente trabalho avaliar as características produtivas, nutricionais e a eficiência agronômica da adubação fosfatada com MAP revestido com polímeros em dois cultivos subsequentes de alface. Foi conduzido um experimento em casa de vegetação em vasos com capacidade para 4 kg de solo preenchido com um Latossolo Vermelho distrófico de textura argilosa. O delineamento experimental foi inteiramente casualizado e os tratamentos distribuídos em arranjo fatorial 2 x 5: duas fontes de fósforo (P) (MAP e MAP revestido com polímeros) aplicadas nas parcelas em cinco doses (0; 100; 200; 400; 800 mg P 2 O 5 kg -1 ), com três repetições. Os resultados mostraram que o MAP revestido com polímeros promoveu maior eficiência da adubação fosfatada nos dois cultivos da alface, melhorando o aproveitamento do fósforo residual. A eficiência agronômica da adubação diminui com o aumento na quantidade de fósforo aplicada. As características produtivas e nutricionais da alface foram influenciadas pelas doses de P 2 O 5 e com a utilização do MAP + polímeros. A maior massa seca e fresca e acúmulo de P no primeiro cultivo ocorreram com a utilização do MAP revestido por polímeros nas doses de 506,9; 450,1; 522,8 mg kg -1 de P 2 O 5 .Palavras-chave: Fertilizante fosfatado. Efeito residual. Lactuca sativa L.

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Section: First Cropmentioning

confidence: 99%

Productive characteristics, nutrition and agronomic efficiency of polymer-coated MAP in lettuce crops

Chagas

Emrich

Guelfi

et al. 2015

Revista Ciência Agronômica

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“…Crushed rocks promoted increases on rice shoot and root dry matter as potassium doses increased, although the effect over grain yield was variable ( Figure 1A, B and C , with genotypes average 13.62 g plant -1 (Fageria et al, 2010). With this reference, on silicate rocks experiment, the ultramafic was superior to phlogopite and alkaline breccia and did not differ from potassium chloride (Barbosa et al, 2006).…”

Section: Resultsmentioning

confidence: 91%

“…The first three were considerably higher than the others and promoted considerable plant response on grain yield per kg of K 2 O applied. Potassium use efficiency of rice genotypes indicated by agronomic efficiency varies between 4.11 to 11.33 mg mg -1 with an average of 8.9 mg mg -1 (Fageria et al, 2010). The crushed rocks generated values of agronomic efficiency varying with doses of K 2 O and with types of crushed rock, in a range from 2.4 to 22.9 mg mg -1 .This remarks the difference among rocks in their capacity to release K from their structures.…”

Section: Resultsmentioning

confidence: 99%

“…The latter combine nutrients source with acidity neutralizing power, useful in acid, not limed, areas, common in large part of Brazilian savannah. In absence of K application and with potassium chloride application, recovery rates range from 4.9 to 38.6% respectively for different rice genotypes (Fageria et al, 2010). It becomes evident that crushed rocks may be utilized as nutrients sources due to their content of potassium, nickel, copper and zinc release, as measured by accumulation of these nutrients in rice shoot and grain, with positive effect on yield.…”

Section: Resultsmentioning

confidence: 99%

“…Nickel, Cu and Zn were determined by atomic absorption spectroscopy and K by flame spectrophotometry. The analysis of quality were based on National Institute of Standards and Technology (NIST) reference BCR ® 414 -Plankton which defines the content limits for Ni (18.8), Cu(29.5) and Zn (111.6) in mg kg and potassium recovery (KR) = K in shoot with K -K in shoot without K; dose of K 2 O (Fageria et al, 2010). Analysis of variance utilized software SISVAR (Ferreira, 2011).…”

Section: Methodsmentioning

confidence: 99%

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Yield, nutrient uptake and potassium use efficiency in rice fertilized with crushed rocks

Silva¹,

Spehar²,

Marchi³

et al. 2014

Afr. J. Agric. Res.

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The increasing world population has led into big food and raw material demand, with high pressure on agriculture. In Brazil, potassium fertilizers are mostly imported rising interest on rocks and mining rejects as alternative sources. The objective of this work was to evaluate the effect of crushed rocks over mineral nutrition, yield and efficiency of potash fertilization in rice. The experiment was carried out under greenhouse conditions in pots with 3.7 kg of Oxisol soil samples. The experimental design was completely randomized, in a factorial layout 4 × 6, comprising six crushed rocks used as alternative multinutrient fertilizer (breccia, biotite schist, ultramafic, Chapada byproduct, mining byproduct and phlogopite), and four doses based on potassium (0, 200, 400, 600 kg K 2 O ha -1 ), with four replications. The concentration and accumulation of potassium, copper, zinc and nickel in rice shoot dry mass were determined. These data were used to evaluate the efficiency index of K-source rocks on fertilization. It was shown that crushed rocks promote alterations in mineral nutrition, grain yield and potassium use efficiency, remarking their potential to be used as alternative fertilizer in rice cropping systems.

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Effects of controlled‐release potassium fertilizer on available potassium, photosynthetic performance, and yield of cotton

Tian

Zhang

et al. 2017

J. Plant Nutr. Soil Sci.

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Potassium (K) is one of the major mineral elements required for normal growth of cotton. However, understanding the effect of controlled‐release K fertilizer on leaf photosynthesis and K use efficiency (KUE) of cotton is currently limited. A two‐year pot experiment was consecutively conducted in 2014 and 2015 with three kinds of K fertilizer including K2SO4, KCl, and polymer‐coated KCl (CRK), each at four application rates (0.00, 0.86, 1.73, and 2.59 g K plant−1, respectively). For each type of K fertilizer, the yield and K uptake of cotton increased but the KUE decreased with higher K fertilizer application. The release characteristics of K from CRK corresponded well to the K requirements during cotton growth. Plant‐available soil K, as well as leaf SPAD values, net photosynthetic rate (Pn), maximal photochemical efficiency (Fv/Fm), and effective quantum yield of photosystem II (ΦPSII) in CRK treatments were increased after full bloom stage compared to conventional K fertilizers under the same potassium application rate. Consequently, the CRK treatments significantly increased lint cotton yields by 8.1–32.7% and 3.7–20.8%, while the KUE increased by 15.5–54.8% and 14.5–45.4% compared to KCl and K2SO4 treatments, respectively. The results indicate that the application of CRK is intensively recommended to replace conventional potassium fertilizers for gaining greater yields and higher KUE of cotton.

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Yield, Potassium Uptake and Use Efficiency in Upland Rice Genotypes

Cited by 18 publications

References 0 publications

Productive characteristics, nutrition and agronomic efficiency of polymer-coated MAP in lettuce crops

Productive characteristics, nutrition and agronomic efficiency of polymer-coated MAP in lettuce crops

Yield, nutrient uptake and potassium use efficiency in rice fertilized with crushed rocks

Effects of controlled‐release potassium fertilizer on available potassium, photosynthetic performance, and yield of cotton

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