A glasshouse evaluation of the comparative effects of organic amendments, lime and phosphate on alleviation of Al toxicity and P deficiency in an Oxisol

Mokolobate, M. S.; Haynes, Richard

doi:10.1017/s002185960300323x

Cited by 20 publications

(13 citation statements)

References 25 publications

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“…The addition of organic amendments increase soil pH and reduce exchangeable Al regardless of whether lime was applied or not (Mokolobate & Haynes, 2003;Yagi et al, 2003).…”

Section: Resultsmentioning

confidence: 99%

Crisphead lettuce under influence of soil conditioner, organic fertilizers and liming

Marchi¹,

Marchi

Silva³

et al. 2015

Com. Sci.

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Lettuce is considered the main leafy vegetable crop in Brazil. High amounts of mineral and organic fertilizers are applied to soils during lettuce growth. There is a need of data concerning the effect of organic fertilizers and liming, including soil conditioners. Few studies were carried out verifying effects of soil conditioners, organic fertilizers and liming on lettuce production. The aim of this work was to test a soil conditioner composed of humic material, organic fertilizers and liming on “iceberg” lettuce production. The experiment was conducted at Federal University of Lavras, Minas Gerais State, Brazil, from March to July, in greenhouse conditions. The experimental design was completely randomized in a factorial scheme 5x3x2. Five doses of soil conditioner (0, 20, 40, 100, 200 L ha-1), 3 types of fertilizers (organic compost, chicken manure and mineral), with or without liming were studied. Fresh and dried biomass, commercial fresh and dried biomass, plants height, circumference of lettuce head, number of leaves, and dried root weight yield were evaluated. Chicken manure rendered the higher lettuce shoot commercial fresh weight and circumference than the other evaluated fertilizers. In general the soil conditioner did not influence lettuce production. The use of liming was very important on lettuce production when mineral fertilizers were used.

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“…The addition of organic amendments increase soil pH and reduce exchangeable Al regardless of whether lime was applied or not (Mokolobate & Haynes, 2003;Yagi et al, 2003).…”

Section: Resultsmentioning

confidence: 99%

Crisphead lettuce under influence of soil conditioner, organic fertilizers and liming

Marchi¹,

Marchi

Silva³

et al. 2015

Com. Sci.

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“…Their abundance (especially Al +3 ) may also be phytotoxic to several crops [15][16][17][18] and forage species [19]. However, the yield-limiting effects of Al +3 for most crops may be alleviated or eliminated by liming [20,21]. Liming the soil to a pH above 5.5 may lower the concentration of monomeric Al ions [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Extractable Al and Soil Solution Ionic Concentrations in Strongly Leached Soils from Northwest Iberia: Effects of Liming

Auxtero¹,

Madeira²,

Parker

2012

ISRN Soil Science

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Strongly leached soils occurring in Northwest Iberia contain high concentration of Al which may affect crop growth. Information regarding the extractability of Al and lime required to eliminate toxic Al species in the soil solution is scarce. In this context, the extractability of Al on these soils was determined using 1 M KCl, 0.33 M LaCl3 and 0.5 M CuCl2. The effects of lime on the concentration and activity of Al species in soil solution, using the GEOCHEM program was also evaluated. Extractability of Al was in the order: 1 M KCl < 0.33 M LaCl3 < 0.5 M CuCl2, with ranges from 0.7–3.3, 1.3–4.4, and 1.8–13.5 cmolc kg-1, respectively. These values were positively correlated with cation exchange capacity and organic C, clay, Alo and Feo contents. Application of 6 t CaCO3 ha-1 increased the total concentrations of Ca+2, Mg+2, K+, and Na+ ions in soil solution, whereas, application of 2 t CaCO3 ha-1 reduced the concentration and activity of Fe+3, Al+3, Mn+2, Zn+2, Cu+2, SO4-2, and PO4-3 ions,and eliminated toxicity threshold of free Al+3 and Al soluble complexes in the soil solution. Application of low amounts of lime may prevent the negative effects of soluble Al on crops.

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“…The complexation of Al mono in solution, is of great importance in relation to crop production in acid soils since it is the activity of Al 3+ and/or monomeric hydroxy-Al species in solution that is toxic to plants (Kochian, 1995). Reduction of Al mono to below 10 lM (as occurred after 7 weeks incubation for poultry and pig manure, sewage sludge, and soybean residues) is likely to allow rapid growth of even Al-sensitive crop species such as maize (Diatloff et al, 1998;Mokolobate and Haynes, 2003).…”

Section: Discussionmentioning

confidence: 99%

The liming effect of five organic manures when incubated with an acid soil

Naramabuye

Haynes

2007

Z. Pflanzenernähr. Bodenk.

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A laboratory incubation experiment of 6 months duration was carried out to investigate the liming effects of five organic manures (poultry, pig, and cattle manure, soybean residues, and sewage sludge) when added to an acid soil at a rate of 10 mg g -1 . Soils were sampled after 1, 7, 13, 19, and 25 weeks of incubation. For the animal manures and sewage sludge, soil pH was highest after 1 week incubation and it declined thereafter. However, for soybean residues, pH increased over the first 7 weeks of incubation after which it declined. The decreases in pH were accompanied by accumulation of NO À 3 -N in the soil. The addition of organic residues to the soil resulted in decreases in the concentrations of exchangeable Al and in both total (Al t ) and monomeric (Al mono ) Al present in the soil solution. The effect was most marked for poultry manure, least marked for cattle manure, and more evident after 7 than 25 weeks incubation. Concentrations of soluble C in the soil solution were elevated in manure-amended soils. Manure additions resulted in a decrease in the percentage of Al t present in solution as Al mono , and this was attributed to complexation of Al by soluble organic matter originating from the manures. It was concluded that organic wastes can act as liming materials when added to acid soils and that the resulting increase in pH and decrease in Al mono concentrations might provide a window of opportunity for establishment and early growth of crop plants.

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A glasshouse evaluation of the comparative effects of organic amendments, lime and phosphate on alleviation of Al toxicity and P deficiency in an Oxisol

Cited by 20 publications

References 25 publications

Crisphead lettuce under influence of soil conditioner, organic fertilizers and liming

Crisphead lettuce under influence of soil conditioner, organic fertilizers and liming

Extractable Al and Soil Solution Ionic Concentrations in Strongly Leached Soils from Northwest Iberia: Effects of Liming

The liming effect of five organic manures when incubated with an acid soil

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