Nitrogen dynamics and crop growth on an alfisol and a vertisol under rainfed lowland rice-based cropping system

Singh, Upendra; Patil, S. K.; Das, Reshma; Padilla, J. L.; Singh, Virendra; Pal, A. R.

doi:10.1016/s0378-4290(98)00166-x

Cited by 24 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…During the subsequent period of soil aeration, NO 3 − forms via nitrifi cation of indigenous soil N and fertilizer N applied to the upland crop. Accumulated soil NO 3 − can be rapidly lost by denitrifi cation when soil is fl ooded and puddled for the next rice crop George et al, 1992;Singh et al, 1999) or when nonpuddled soil is saturated by heavy rains before dry-sown rice takes up accumulated soil NO 3 − (Sharma et al, 2005). Denitrifi cation losses following soil submergence can match the magnitude of N losses from fertilizer N applied to rice, particularly when NO 3 − formation is much greater than plant demand for NO 3 − during the aerobic soil phase Buresh et al, 1989).…”

Section: Nitrogen In Lowland Rice-upland Crop Rotationsmentioning

confidence: 99%

Nitrogen Transformations in Submerged Soils

Buresh

Reddy

Kessel

2015

Agronomy Monographs

View full text Add to dashboard Cite

Soils with continuous or intermitt ent submergence by water are widely distributed worldwide. They occur in a range of ecosystems including rice (Oryza sativa L.) fi elds, wetlands, estuaries, and fl oodplains. Such ecosystems oft en occur at low elevation in the landscape and are poorly drained with high retention of water. In addition, some upland areas with poor drainage can undergo periodic submergence and soil saturation. Moreover, the sediments in ocean, lake, and stream bottoms have similar biogeochemical and physical characteristics and N transformations as submerged agricultural soils.Rice fi elds surrounded by earthen levees to retain rain and irrigation water and ensure soil submergence are one of the world's major agricultural ecosystems. Rice is a staple food for nearly half the world's population, and about 95% of the global rice production occurs on fi elds with soil submerged during at least part of the rice-cropping period. The sustained productivity of this rice ecosystem, which ensures production of suffi cient food for a growing world population, relies heavily on the input and management of N.Nitrogen transformations in submerged soils are markedly diff erent from those in drained, aerated soils. These diff erences aff ect the prevalent soil microorganisms and microbial activities and the turnover, availabilility, and losses of N. To deal with the diff erences in N transformations between submerged and drained soils it is necessary to understand the biogeochemical conditions existing in submerged soils. This chapter is an update of an earlier review by Patrick (1982).

show abstract

Section: Nitrogen In Lowland Rice-upland Crop Rotationsmentioning

confidence: 99%

Nitrogen Transformations in Submerged Soils

Buresh

Reddy

Kessel

2015

Agronomy Monographs

View full text Add to dashboard Cite

show abstract

“…Stutterheim et al (1994) found even lower values analyzing data from 35 experiments performed between 1981 and 1991 in several European countries. Singh et al (1999) reported values between 12 and 42% for different fertilization levels. The emissions of nitrous oxide by denitrification from rice paddies are particularly relevant with respect to other cropping systems, like for other important greenhouse gases (IPCC, 2001).…”

Section: Introductionmentioning

confidence: 99%

The CropSyst model to simulate the N balance of rice for alternative management

Confalonieri

Gusberti

Bocchi

et al. 2006

Agron. Sustain. Dev.

View full text Add to dashboard Cite

CropSyst is a mechanistic model developed for simulating the growth and development of potentially all herbaceous crops under potential and water/nitrogen (N)-limited conditions. Although the model has been widely used for many crops under different pedo-climatic and management conditions, studies on the simulation of water and N balance for flooded rice are lacking. We evaluated the CropSyst model for simulating the N balance of north-Italian rice fields for scatter-seeded rice grown under continuously flooded conditions. In order to calibrate and validate the model for the processes involved with soil N transformation, data collected in field experiments carried out in northern Italy between 2002 and 2004 were used. The results show the robustness of the model in reproducing the course of the measured soil mineral nitrogen content: the Modeling Efficiencies which describe the agreement between measured and simulated trends, are in most cases positive and the model error fell almost always within the experimental error on the measurements (P = 0.95). Moreover, the model showed the same level of reliability while simulating the nitrogen balances under different levels of nitrogen fertilization, thus depicting it as suitable for comparing N fertilization scenarios. This first attempt at using a model for simulating the nitrogen balance under flooded conditions encourages further studies because of the need of effective tools for optimizing the nitrogen management of flooded rice systems, considered significant sources of groundwater pollution and greenhouse gases in many European rice districts.

show abstract

“…Based on data from a pot experiment with sorghum on a nonsaline soil, Kurdali (2004) reported that this extra availability was about 20% of the supplied nutrient. Conversely, in field trials with species other than sorghum, the two methods either led to close results (Singh et al, 1999) or the former accounted for an average 20% more of the supplied N (Garabet et al, 1998;Stevens et al, 2005).…”

Section: Soil Nitrogen Plant Uptake and Nutrient Recoverymentioning

confidence: 91%

Nitrogen release from a ¹⁵N‐labeled compost in a sorghum growth experiment

Barbanti¹,

Grigatti²,

Ciavatta³

2011

Z. Pflanzenernähr. Bodenk.

View full text Add to dashboard Cite

In the near future, composted bio-solids are expected to play a major role in agriculture. In order to evaluate their contribution to plant growth and nutrition, a mixed sorghum-poultry manure compost was prepared using 15 N-labeled materials. Four treatments were compared in a pot trial: fertilized with compost vs. unfertilized, both of them combined with (cultivated) and without (bare) plants of fibre sorghum (Sorghum bicolor [L.] Moench.). Soil mineral nitrogen (N-min), plant growth, and N uptake were monitored over a whole growing season (167 d after fertilizer treatment; DAT). Apparent soil mineralization (ASM) and apparent recovery fraction of nitrogen by the plant (ARF) were assessed, as well as the 15 N recovery fraction by the plant ( 15 NRF). Compost enhanced sorghum biomass at mid growth (+ 200% of dry weight compared to the unfertilized). However, the difference between the control and the fertilized plants progressively decreased towards the end of the season (+ 70%). Fertilized and unfertilized plants followed different growth patterns over time, although of the same sigmoid type. Conversely, N concentration in plant tissues followed a common dilution curve, indicating that fertilized sorghum efficiently used the supplied N, avoiding luxury consumption. Apparent soil mineralization approximately reached 45% of compost total N in pots without plants. Apparent recovery fraction attained 100% at about two third of the growing season (DAT 111), then declined to about 50% because of root and leaf decline. Compared to it, 15 NRF only reached ≈ 20% at mid growth (DAT 83), then declined to 12%. Despite the large difference in absolute values, ARF and 15 NRF exhibited a significant correlation, indicating a common trend in time. In contrast to 15 NRF, the amount of nutrient derived from fertilizer (Ndff) taken up by the plant decreased over the growth season, proving that compost contributed more to plant nutrition in the early (Ndff ≈ 50%) than in the late growing season (Ndff ≈ 25%). The large difference between ARF and 15 NRF suggests that sorghum exerted a strong nutrient demand on the soil and on the fertilizer. Both 15 NRF and ARF are considered valuable traits: the former better describes fertilizer behavior and actual supply of N, while the latter outlines the overall effect of fertilizer application on crop nutrition.

show abstract

Nitrogen dynamics and crop growth on an alfisol and a vertisol under rainfed lowland rice-based cropping system

Cited by 24 publications

References 23 publications

Nitrogen Transformations in Submerged Soils

Nitrogen Transformations in Submerged Soils

The CropSyst model to simulate the N balance of rice for alternative management

Nitrogen release from a ¹⁵N‐labeled compost in a sorghum growth experiment

Contact Info

Product

Resources

About

Nitrogen dynamics and crop growth on an alfisol and a vertisol under rainfed lowland rice-based cropping system

Cited by 24 publications

References 23 publications

Nitrogen Transformations in Submerged Soils

Nitrogen Transformations in Submerged Soils

The CropSyst model to simulate the N balance of rice for alternative management

Nitrogen release from a 15N‐labeled compost in a sorghum growth experiment

Contact Info

Product

Resources

About

Nitrogen release from a ¹⁵N‐labeled compost in a sorghum growth experiment