Rhizosphere pH and phosphorus forms in an Oxisol cultivated with soybean, brachiaria grass, millet and sorghum

Schoninger, Evandro Luiz; Gatiboni, Luciano Colpo; Ernani, Paulo Roberto

doi:10.1590/s0103-90162012000400004

Cited by 8 publications

(6 citation statements)

References 30 publications

(33 reference statements)

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“…The fraction of P extracted with 0.1 M NaOH generally increased with P application, although no significant effects of Congo grass cultivation or interactions were observed (Table 2). Schoninger et al (2012) observed that brachiaria grass reduced the most available P forms only in the 0-1 mm layer from the rhizosphere. Under field conditions, a large amount of P added as fertilizer is adsorbed in soil and remains in moderately labile fractions (Pavinato et al, 2009).…”

Section: Discussionmentioning

confidence: 92%

Soil phosphorus dynamics as affected by Congo grass and P fertilizer

Rosolem

Merlin

Büll

2014

Sci. agric. (Piracicaba, Braz.)

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Some plant species can change soil phosphorus (P) availability and this may be an important tool in managing tropical high fixing phosphorus soils. An experiment was conducted to evaluate phosphorus transformations in the soil and phosphatase activity during periods of Congo grass (Brachiaria ruziziensis, Germain et Evrard) growth in two tropical soils receiving 20, 40, 80, 160 mg dm −3 of inorganic P. Plants were grown for 84 days in 8-L pots. Acid phosphatase activity, P in the microbial mass, soil organic and inorganic P and P accumulation by Congo grass were evaluated. Phosphorus fertilization increased soil P availability, Congo grass yields and P accumulation in the plant. On average, less labile P forms in the soil were not changed by Congo grass; however, the P in the soil extracted with HCl (P-Ca -non labil form) decreased. This decrease may have resulted from the combination of the presence of grass and phosphatase capacity to dissolve less available P in the soil. Thus, soil exploration by Congo grass roots and the subsequent extraction of calcium phosphate may have increased the P concentration in the plant tissue. Despite the decrease in the P extracted from the soil with HCl resulting in increased labile P forms in the soil, the effect of Congo grass on the availability of P depends on the soil type.

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Section: Discussionmentioning

confidence: 92%

Soil phosphorus dynamics as affected by Congo grass and P fertilizer

Rosolem

Merlin

Büll

2014

Sci. agric. (Piracicaba, Braz.)

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“…It is also the raw material for proteins formation and promotes the assimilation and respiratory process. Furthermore, phosphorus is also beneficial in accelerating the crop generative phase, as well as ripening seeds and fruits (Schoninger, Gatiboni, & Ernani, 2012).…”

Section: Number Of Root Nodulesmentioning

confidence: 99%

The Effects of Rice Husk Ash and Dolomite on Soybean Yield at Latosol Soil

Perdanatika

Suntoro

Pardjanto

2018

Sains Tanah J. Soil Sci. Agroclimatology

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The aim of this research is to evaluate the effects ofrice husk ash and dolomite application on soybean yield at latosol soil. This research was conducted at a plastic house from September to December 2016. This research employed Factorial Randomized Complete Design with two factors and three replications. The first factor is the dosage of rice husk ash, consisted of four levels (0 (control), 3.75 ton ha-1, 7.5 ton ha-1 and 15 ton ha-1), and the second factor is the dosage of dolomite consisted of three levels (0 (control), 250 and 500 kg ha-1, respectively). The results found that the application of 15 tons ha-1 rice husk significantly affected the number of full pods and total pods, but did not affect the number of the empty pods. The application of 3.75 tons ha-1 husk ash increased the seed weight and weight of 20 dry seeds. It was also found that the higher the rice husk ash dose applied, the more root nodules produced.

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“…Phosphorus is the third most important essential soil nutrient element after soil C and N but P is the second most limiting mineral after N in promoting plant growth and crop yields [4,5] . Phosphorus is involved in cellular energy transfer, respiration and photosynthesis, thus its supply at low levels can affect legume nodulation and N 2 fixation [6,7] .…”

Section: Introductionmentioning

confidence: 99%

Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia

Muhaba¹,

Dakora²

2020

Front. Agr. Sci. Eng.

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Phosphorus is a key nutrient element involved in energy transfer for cellular metabolism, respiration and photosynthesis and its supply at low levels can affect legume nodulation, N 2 fixation, and C assimilation. A twoyear field study was conducted in Ethiopia in 2012 and 2013 to evaluate the effects of P supply on growth, symbiotic N 2 nutrition, grain yield and water-use efficiency of three groundnut genotypes. Supplying P to the genotypes significantly increased their shoot biomass, symbiotic performance, grain yield, and C accumulation. There was, however, no effect on shoot δ 13 C values in either year. Compared to the zero-P control, supplying 40 kg$ha-1 P markedly increased shoot biomass by 77% and 66% in 2012 and 2013, respectively. In both years, groundnut grain yields were much higher at 20 and 30 kg$ha-1 P. Phosphorus supply markedly reduced shoot δ 15 N values and increased the %Ndfa and amount of Nfixed, indicating the direct involvement of P in promoting N 2 fixation in nodulated groundnut. The three genotypes differed significantly in δ 15 N, %Ndfa, N-fixed, grain yield, C concentration, and δ 13 C. The phosphorus Â genotype interaction was also significant for shoot DM, N content, N-fixed and soil N uptake.

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Rhizosphere pH and phosphorus forms in an Oxisol cultivated with soybean, brachiaria grass, millet and sorghum

Cited by 8 publications

References 30 publications

Soil phosphorus dynamics as affected by Congo grass and P fertilizer

Soil phosphorus dynamics as affected by Congo grass and P fertilizer

The Effects of Rice Husk Ash and Dolomite on Soybean Yield at Latosol Soil

Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia

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