The role of inorganic fertilizers and their management practices

Hera, C.

doi:10.1007/bf00747684

Cited by 25 publications

(10 citation statements)

References 6 publications

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“…Little research has been carried out, in long‐term experiments, on physico‐chemical influences on soil properties and especially at pH close to neutrality. However, long‐term intensive cultivation can cause considerable changes in soil pH, cation exchange capacity and cation environment, mainly by fertilizer additions (Schjønning et al ., 1994; Hera, 1996; Blake et al ., 1999; Ellmer et al ., 2000; Noble et al ., 2000; Pernes‐Debuyser & Tessier, 2002a).…”

Section: Introductionmentioning

confidence: 99%

Soil physical properties affected by long‐term fertilization

Pernes-Debuyser

Tessier

2004

European J Soil Science

114

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Summary According to the literature, soil physical properties are linked mainly with organic constituents that are often considered as the first indicator of soil fertility. But the use of fertilizers and amendments can change soil properties independently of the organic matter content. In a long‐term experiment at Versailles, fertilizers and amendments have been applied each year to uncultivated plots. After 70 years, the plots had the same low organic matter content except those which were treated with manure. However, the physico‐chemical environment had become strongly differentiated. Physical properties, especially soil water relations, were also greatly affected. The use of ammoniacal fertilizers strongly decreased soil pH and cation exchange capacity (CECsoil). Plots treated in this way were more sensitive to the degradation of their hydraulic properties and became unstable in spite of the preservation of their porosity. Basic amendments (i.e. bases added as CO32–, OH–, O2– or silicate anions) increased soil pH, CECsoil and its saturation by exchangeable calcium. The increase in CECsoil improved soil structural cohesion and water flow properties. After basic treatment, there is greater structural stability, and water moves faster through the soil. In potassic and sodic plots, K+ and Na+ affected water movement and increased the soil's sensitivity to degradation. Manure treatment increased water retention and soil stability. The cation exchange capacity, measured at soil pH, can be used as a good indicator of soil stability, in combination with the organic matter content and the kinds of exchangeable cation (especially K+ and Na+).

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Section: Introductionmentioning

confidence: 99%

Soil physical properties affected by long‐term fertilization

Pernes-Debuyser

Tessier

2004

European J Soil Science

114

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“…As with fertilizers, manure derived N and P can become environmental pollutants when availability is asynchronous with crop demand or rates are excessive (Andraski et al, 2000;Sharpley et al, 2007;Adeli et al, 2011). Current row crop production practices are heavily reliant on inorganic fertilizer sources (Hera, 1996), which have experienced fl uctuations in pricing and an overall increase in cost in recent years causing growers to seek other nutrient source options such as manure. In the mid-South, PL applications may occur following crop harvest in the fall, as it is a period which is operationally favorable and more easily coordinated with logistics of trucking and spreading.…”

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confidence: 99%

Nitrogen Benefits of Winter Cover Crop and Fall‐Applied Poultry Litter to Corn

2017

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).Abbreviations: CC, cover crops; FNEQ, fertilizer nitrogen equivalence; PL, poultry litter. core ideas• Fall-applied poultry litter and legume cover crop equate to more than 100 kg fertilizer N in corn.• Without legume cover crop, fall-applied poultry litter failed to result in fertilizer N credit.• Fertilizer N equivalence of legume/rye biculture was variable between -12 to a credit of 75 kg N ha -1 .• Fertilizer N equivalence of legume cover crops and poultry litter increased across the 3-yr study.

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“…Nitrogen, Phosphorus and Potash fertilization can not only increase economic return of the investment through better yield and quality rather it minimizes environmental dangers (Hera, 1996). The balanced doses of nitrogen, phosphorus and potassium play a key role in the increment of the vegetative growth, favorable for the synthesis of peptide bonds, protein and carbohydrates metabolism, necessary for the plant growth and flower development (Boodly and Meyer, 1965).…”

Section: Potassiummentioning

confidence: 99%

Response of Gerbera (Gerbera jamesonii) to different levels of Phosphorus and Potassium

2015

Int. J. Biosci.

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Effect of phosphorus and potassium on growth and flowering of Gerbera (Gerbera Jamesonni)" was investigated at Horticulture farm, the Agricultural University Peshawar during 2011. The experiment was laid out in Randomized Complete Block Design (RCBD) with two factors and repeated thrice. Phosphorus levels (0, 7.5, 10 and 12.5 g m -2 ) and potassium levels (0, 10, 12.5, 15 g m -2 ) were applied to Gerbera. More plant height (31.72 cm), number of leaves plant -1 (29.76), flowers blooming period (183.18), plant canopy (33.59 cm), number of flowers plant -1 (16.63), flower stalk length (25.37 cm), flower diameter (8.05 cm) and vase life (7.32) were recorded in plants received 12.5g phosphorus m -2 , while more days to first flowering (85.50) were noted in the control treatment. The findings further revealed that more plant height (30.04 cm), number of leaves plant -1 (28.08), flowers bloom period (182.05), plant canopy (31.00 cm), number of flowers plant -1 (15.68), flower stalk length (22.87 cm), flower diameter (7.30 cm) and vase life (7.00 days) were noted in plants treated with 15 K2O g m -2 , while days to first flowering (88.00) were noted in control plots. As the interaction between phosphorus and potassium are concerned, most growth and flowering attributes performed best when treated with 12.5 g P and 15 g K2O m -2 . It is concluded that the combination of 12.5 g P m -2 and 15 g K2O m -2 influenced most of growth and flowering parameters of Gerbera.

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The role of inorganic fertilizers and their management practices

Cited by 25 publications

References 6 publications

Soil physical properties affected by long‐term fertilization

Soil physical properties affected by long‐term fertilization

Nitrogen Benefits of Winter Cover Crop and Fall‐Applied Poultry Litter to Corn

Response of Gerbera (Gerbera jamesonii) to different levels of Phosphorus and Potassium

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