Root Extraction of Nutrients Associated with Long-Term Soil Management

Sharpley, A. N.; Meisinger, J. J.; Power, James F.; Suarez, Donald L.

doi:10.1007/978-1-4612-2894-3_6

Cited by 75 publications

(44 citation statements)

References 203 publications

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“…Resultados experimentais evidenciam que a concentração de P nos tecidos das plantas pode ser reduzida de 20% a 50%, em ambiente salino, sem apresentar evidências de deficiência de P nas plantas (Sharpley et al, 1992).…”

Section: Resultsunclassified

Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Garcia¹,

Nazário²,

Gonçalves³

et al. 2012

R_I

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4Eng. Agrônomo, Mestre em Produção Vegetal, CCAUFES, Alegre, ES, ivo_zution@yahoo.com.br 5 Eng. Agrônomo, Mestre em Produção Vegetal, CCAUFES, Alegre, ES, joaocarlosagr@hotmail.com 6 Eng. Agrônomo, D.S., Prof. do Depto. de Produção Vegetal, CCAUFES, Alegre, ES, jata@cca.ufes.br RESUMOObjetivando avaliar a nutrição em mudas do cafeeiro conilon variedade robusta decorrentes da irrigação com água salina foi conduzido um experimento em casa de vegetação, montado no delineamento inteiramente casualizado com cinco tratamentos constituídos de um irrigado com água doce e quatro com água salina nas concentrações de 1,0; 2,0; 3,0 e 4,0 dS m -1 com quatro repetições. Para avaliar os efeitos da salinidade sobre a nutrição do cafeeiro foi realizada uma análise nutricional determinando os teores foliares e nas raízes de N, P, K, Ca, Mg, S e Na aos 125 dias após o plantio das mudas. Com os resultados obtidos verificou-se que a irrigação com água salina elevou os teores de Na nas folhas e raízes; proporcionou maiores teores N, Ca e Na nas folhas, K, Mg e S nas raízes, enquanto que a concentração de P não diferiu. Palavras-chave:Estresse salino. Nutrição mineral. Coffea canephora Pierre. GARCIA, G. de O.; NAZÁRIO, A. A.; GONÇALVES, I. Z.; MADALÃO, J. C.; AMARAL, J. A. T. do. NUTRITION OF COFFEE CONILON IRRIGATED WITH SALINE WATER. ABSTRACTIn order to evaluate nutrition of seedlings conilon coffee under irrigation with saline water an experiment was conducted in a greenhouse, in a completely randomized design with five treatments consisted of irrigation with fresh water and irrigation with four concentrations of saline water: 1.0, 2.0, 3.0 and 4.0 dS m -1 , with four replications. To evaluate the effects of salinity on coffee tree's a nutrition analysis was performed by determining the nutritional content in leaves and roots of N, P, K, Ca, Mg, S and Na, at 125 days after planting. The results obtained showed that irrigation with saline water increased the levels of Na in leaves and roots; resulting in higher levels of N, Ca and Na in the leaves, and of K, Mg and S in the roots; the concentration of P did not differ.

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Section: Resultsunclassified

Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Garcia¹,

Nazário²,

Gonçalves³

et al. 2012

R_I

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show abstract

“…In most cases, salinity decreases the concentration of P in plant tissue (Sharpley et al, 1992), but the results of some studies indicate salinity either increased or had no effect on P uptake. Plant-growing conditions, plant type and even cultivar play a large role in P accumulation (Grattan and Grieve, 1994).…”

Section: Phosphorusmentioning

confidence: 99%

“…Phosphate availability is reduced in saline soils not only because of ionic strength effects that reduce the activity of phosphate but also because phosphate concentrations in soil solution are tightly controlled by sorption processes and by the low-solubility of Ca±P minerals. Therefore, it is understandable that phosphate concentrations in field-grown agronomic crops decreased as salinity (NaCl CaCl 2 ) increased (Sharpley et al, 1992). In many cases, tissue P concentration was reduced between 20% to 50%, yet there was no evidence of P deficiency in the crops.…”

Section: Phosphorusmentioning

confidence: 99%

Salinity–mineral nutrient relations in horticultural crops

Grattan

Grieve

1998

Scientia Horticulturae

1,192

738

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“…However, significantly higher levels of K were found in the plots of the shrimp-boro rice cropping system compared with those of the aman rice-boro rice cropping system, and the index value for K content was very good in both of the cropping systems (the index value was 1.00 for both). On the basis of the results, soil pH was significantly increased from 2010 to 2011 and 2012 from 7.9 to 8.4 and the calcium content was also high, therefore, at this high pH the soil P would be fixed with Ca and formed a complex resulting lower P availability (Sharpley, Meisinger, Power, & Suarez, 1992).…”

Section: Yield Amentioning

confidence: 90%

“…This saline inundation also causes the seepage of saline water into the adjacent rice fields, causing problems in rice production (Wahab, 2003;Ali, 2006). Several studies have shown that salinity reduces N and P uptake (Pessarakli, 1991;Al-Rawahy, Stroehlein, & Pessarakli, 1992;Sharpley et al, 1992). K uptake is also impaired by salinity, and experiments have shown that application of additional K in highly saline soils is not effective in improving the K uptake (Marschner, 1995).…”

Section: Yield Amentioning

confidence: 99%

Effect of Shrimp-Based Cropping Systems on Salinity and Soil Fertility in a Coastal Area of Bangladesh: A Village-Level Study

Rahman¹,

Ando²,

Takeda³

2013

JAS

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The present study analysed soil salinity and some essential soil nutrients for rice plant as affected by a shrimp-based cropping system in a coastal area of Bangladesh. The study was conducted in a village located in Satkhira district. Two main cropping systems, the shrimp-boro rice cropping system and the aman rice-boro rice cropping system, are mainly practised by local farmers in the study village. Soil and water samples were collected from the plots of these cropping systems and chemical analysis was done to measure the salinity level of the soil and water as well as to find out the nutrient status of the soil. The data was also collected for economic analysis and estimated rice and shrimp yield from the local farmers. The results revealed that the soil salinity level of the shrimp-boro rice cropping system was higher than that of aman rice-boro over the consecutive years of 2010, 2011 and 2012. The soil was found to be moderately saline. The organic matter content, potassium, calcium, magnesium and sulphur levels of the soil in the shrimp-boro rice system were increased, while the total nitrogen, phosphorus, boron and zinc availability decreased. It was also found that the yield of boro rice was 4,950 kg/ha whereas the aman rice yield was 3,020 kg/ha and that for shrimp the yield was calculated as 268 kg/ha for one growing season (six months). The total income from boro rice, aman rice and shrimp was calculated as 127,760 Tk, 87,118 Tk and 149,476 Tk, respectively. The paper concludes that although some nutrient elements were available in adequate amounts, salinity kept these nutrients from being taken up by the rice plants since salinity changes the osmotic pressure of the soil solution system. This may ultimately lead to a reduction in rice yield and threaten the sustainability of the local shrimp-boro rice cropping system.

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Root Extraction of Nutrients Associated with Long-Term Soil Management

Cited by 75 publications

References 203 publications

Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Nutrição Do Cafeeiro Conilon Irrigado Com Água Salina

Salinity–mineral nutrient relations in horticultural crops

Effect of Shrimp-Based Cropping Systems on Salinity and Soil Fertility in a Coastal Area of Bangladesh: A Village-Level Study

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