The role of inorganic fertilizers and their management practices

Hera, C.

doi:10.1007/978-94-009-1586-2_24

Cited by 15 publications

(12 citation statements)

References 6 publications

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“…In common fertilizer usage, the expected efficiency is approximately 30 -70% of added nitrogen, but it is very often lower than 50% (Hera 1996). The efficiency of a fertilizer depends on it being in the right form for the plant to get it, when the plant needs it.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Mineral Nitrogen in Soils Treated with Slow‐Release Fertilizers

Gioacchini

Ramieri

Montecchio

et al. 2006

Communications in Soil Science and Plant Analysis

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In this study, five different slow-release fertilizers were incubated in two soils, and their nitrogen (N) dynamics was followed for 4 months. Four of the fertilizers used were organic: two were hydrolyzed fur, one was made by hydrolyzed fur, farmyard manure, horn, and hoofs (Endurance), and one contained synthetic organic N [isobutylidendiurea (IBDU)]. The fifth, on the contrary, was a mineral fertilizer (Entec 26) containing both nitrate (NO 3 2 ) and ammonium (NH 4 þ ) and a nitrification inhibitor (3,4 DMPP). The two soils used were a sandy loam (SL) and a clay loam (CL). The fertilizer-N release was conditioned by both the fertilizers and the soil characteristics. The highest accumulation of mineral N as NO 3 2 was observed in the SL soil for all the treatments. The lowest net N release was observed in both soils with End, which was found to be the most resistant to microbial attack and degradation. The two fur-based fertilizers released similar amounts of N, which was higher in the SL soil than in the CL soil. The highest accumulation of fertilizer-derived N in the CL soil resulted from IBDU; however, the net accumulation of N in the SL soil with this fertilizer was even higher than the amount of N initially added. This fact was attributed to an increase in mineralization of the soil's native organic N. A real positive "priming effect" was also observed in the SL soil with E26. On the contrary, E26 caused a low level of N accumulation in the CL soil.

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Section: Introductionmentioning

confidence: 99%

Dynamics of Mineral Nitrogen in Soils Treated with Slow‐Release Fertilizers

Gioacchini

Ramieri

Montecchio

et al. 2006

Communications in Soil Science and Plant Analysis

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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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“…Therefore, generally farmers use inorganic fertilizers to increase the forage productivity in pasture. Under abiotic stress and inappropriate management, livestock grazing can lead to the loss of deeper-rooted perennial grasses and reduce ground cover and soil fertility (McKeon et al, 2009;Eldridge et al, 2011;Hera, 1996). Therefore, some farmers used chemical fertilizer.…”

Section: Introductionmentioning

confidence: 99%

The Investigation of Biological Nitrogen Fixation in Critical Dryland Pasture

Hasan¹,

Budiman²,

Natsir³

et al. 2019

OnLine Journal of Biological Sciences

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The aim of the study is to determine the production and growth of dwarf napier grass (Pennisetum purpureum cv.mott) integrated with siratro legumes (Macroptilium atropurpureum) contributing to the availability of preferred forage for ruminants on critical dryland. The study applied randomized block design consisted of 4 groups and 4 treatments; P0 consisted of 100% control Pennisetum purpureum cv.mott; P1 consisted of 70% Pennisetum purpureum cv.mott and 30% Macroptilium atropurpureum; P2 consisted of 50% Pennisetum purpureum cv.mott and 50% Macroptilium atropurpureum; P3 consisted of 30% Pennisetum purpureum cv.mott and 70% Macroptilium atropurpureum. The results of this study showed that biological nitrogen fixation (BNF) significantly contributed to the plant's growth and forage production on critical dry pasture.

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The role of inorganic fertilizers and their management practices

Cited by 15 publications

References 6 publications

Dynamics of Mineral Nitrogen in Soils Treated with Slow‐Release Fertilizers

Dynamics of Mineral Nitrogen in Soils Treated with Slow‐Release Fertilizers

Soil physical properties affected by long‐term fertilization

The Investigation of Biological Nitrogen Fixation in Critical Dryland Pasture

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