Effect of sorghum residues on wheat productivity in semi-arid Argentina. I. Stover decomposition and N distribution in the crop

Rosell, R. A.; Galantini, Juán Alberto; Iglesias, Julio Osvaldo; Miranda, Raiane Ferreira de

doi:10.1016/0048-9697(92)90092-7

Cited by 4 publications

(2 citation statements)

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“…When straw was incorporated in the fall, the plant N concentrations that were derived from the fertiliser were 44.0 kg N ha −1 for spring-applied N and 30.6 kg N ha −1 for fall-applied N. Olk et al (2006) reported that the fertiliser N recovery was lower for the fall-applied N relative to the spring-applied N. This result likely occurred due to decreased immobilisation. According to Rosell et al (1992), the total areal plant dry matter was lowest (4.94 Mg ha −1 ) when N was added at the beginning of the fallow period, which indicated strong N immobilisation. In addition, the highest areal plant dry matter (8.30 Mg ha −1 ) occurred when N was incorporated during seeding.…”

Section: Ploughing and Fertiliser Application Timingmentioning

confidence: 99%

Soil nitrogen dynamics and crop residues. A review

Chen

Liu

Qin

et al. 2014

Agron. Sustain. Dev.

318

142

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International audienceNitrogen (N) is a major fertiliser for agriculture and food production. About 67.84 million tons of N are annually applied to agricultural fields, without which nearly half of the world’s population would not be alive today. Returning plant residues to the soil is an alternative and sustainable way of N fertilisation. Although impacts of returning plant residues on plant available N in soil have been widely studied, there is still no systematic review of their mechanisms and models. In this review we highlight the following advances: (1) When plant residues are returned to the soil, N undergoes biotic immobilisation–remineralisation, abiotic immobilisation, soil organic N mineralisation and plant residue organic N mineralisation. (2) Plant residues modify inorganic N fate using three mechanism mineralisation, immobilisation–mineralisation and immobilisation, depending on plant residue nature and soil properties. (3) The use of plant residue C/N ratio is not always effective to predict the effect of plant residues. Instead, soil properties and the forms of carbon and nitrogen should be considered. (4) Mineralisation always promotes N uptake by crops and increases the risk of N loss. In addition, although net immobilisation is involved in immobilisation–mineralisation and immobilisation, it does not necessarily induce lower crop nitrogen uptake. Results also depend on the synchronism between the changing soil inorganic N and the crop N uptake. (5) N loss during mineralisation can be reduced by an immobiliser. Net N immobilisation during immobilisation–mineralisation and immobilisation can be reduced by changing the timing of ploughing and fertilising or by changing the plant residues placement

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Section: Ploughing and Fertiliser Application Timingmentioning

confidence: 99%

Soil nitrogen dynamics and crop residues. A review

Chen

Liu

Qin

et al. 2014

Agron. Sustain. Dev.

318

142

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“…They concluded that Fe-EDDHA should be an effective Fe fertilizer for alkaline soils, also it is probably best used for foliar, instead of soil application. Plant analysis is an important tool to establish the nutritional needs of crops, but requires a careful interpretation when using critical levels (Rosell et al,1992). As plant nutrient concentrations are changing with the age of the plants diagnostic purpose, it is better to use nutrient ratio that remains quite constant throughout the plant cycle.…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF SOIL AND FOLIAR APPLICATION OF IRON CHELATE ON NUTRIENT BALANCE IN LENTIL (Lens esculenta L.) BY USING MODIFIED DRIS EQUATION

Darwesh¹

2011

Mesopotamia Journal of Agriculture

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A pot experiment was conducted to investigate the influence of two different Fe sources (Fe-EDTA and Fe-EDDHA) were sprayed on to the leaves and applied to the soil in levels were involved 0, 10, 20 and 30mg.l-1 both fertilizers were sprayed to leaves two times, the interval date was 20 days and during spraying the soil surface were covered with plastics to prevent Fe contamination. The results indicated that there were significant effect (P<0.01) of the combination between types, concentration, and method of Fe application on total dry matter and on the concentration of N, P, Ca, Mg, K and Fe. The higher values of 6.24g.pot-1 and 30.98, 3.54, 33.81, 28.43mg.g-1 , 246.67mg.kg-1 were recorded from combination treatment (F 2 M 2 L 2) respectively, however the data revealed that the lowest nutrient balance index was recorded from combination treatment (F 2 M 2 L 2) and attained 34.58, while the higher NBI of(1028.45) was recorded in combination treatment (F 1 M 2 L 3), also the result indicated that there are negative correlationship between the nutrient balance index and total dry weight were attained (R=-0.72).

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