scholarly journals Effect of Large Inputs of Manure and Fertilizer on Nitrogen Mineralization in the Newly Built Solar Greenhouse Soils

HortScience ◽  
2019 ◽  
Vol 54 (9) ◽  
pp. 1600-1604
Author(s):  
Shichao Wang ◽  
Zhujun Chen ◽  
Jun Man ◽  
Jianbin Zhou
Keyword(s):  
N Mineralization ◽  
Soil Layer ◽  
Total N ◽  
Soil Layers ◽  
Application Rates ◽  
Age Regression ◽  
Solar Greenhouse ◽  
Greenhouse Soils ◽  
Potentially Mineralizable N

In China, greenhouse soils often receive large rates of different manures and have a high content of soil organic matter (SOM). Understanding changes in nitrogen (N) mineralization in soils of newly built greenhouses after their construction is important for managing N. Soil samples were obtained from solar greenhouses of different ages (0, 1, 2, and 3 years) located in the south edge of the Loess Plateau, China, at 0- to 20- and 20- to 40-cm depth. N mineralization in the soils was measured with the Stanford and Smith long-term aerobic incubation method over 30 weeks. SOM, total N, and the mineralized N in the 0- to 20-cm and 20- to 40-cm soil layers were significantly increased in the older greenhouses. The cumulative mineralized N in the 0- to 20-cm soil layer in different cultivation years was increased in each year since the greenhouses were established. For the greenhouses with the same age, the cumulative mineralized N in the 0- to 20-cm soil layer was greater than that in the 20- to 40-cm layer. The potentially mineralizable N (N0) both in the 0- to 20-cm and the 20- to 40-cm soil layers increased with the greenhouses’ age. Regression analysis indicated that when SOM increased 1 g·kg−1, N0 in the 0- to 20-cm and 20- to 40-cm depth increased 22.6 and 8.4 mg·kg−1, respectively. Therefore, as the N supply in soil increases with the age of the solar greenhouse, we suggest that the application rates of manure and synthetic fertilizer be reduced.

EPIC estimates of soil water, nitrogen and carbon under semiarid temperate conditions

1998 ◽  
Vol 78 (3) ◽  
pp. 551-562 ◽  
Author(s):  
G. Roloff ◽  
R. de jong ◽  
C. A. Campbell ◽  
R. P. Zentner ◽  
V. M. Benson
Keyword(s):  
Soil Water ◽  
Environmental Quality ◽  
Spring Wheat ◽  
Potential Evapotranspiration ◽  
Soil Layer ◽  
Triticum Aestivum L ◽  
Total N ◽  
Organic C ◽  
Support Tool

The Environmental Policy Integrated Climate (EPIC) model is an important support tool for environmental management. Previous tests of the model have determined that it is suitable for long-term yield estimation, but it is less precise in assessing annual yield variability. To determine the reasons for the discrepancies between estimated and measured yields, we tested the ability of EPIC version 5300 to predict soil water and soil nitrogen dynamics, using data from a long-term spring wheat (Triticum aestivum L.) rotation experiment in the semiarid prairie region of Canada. Potential evapotranspiration (PET) estimates varied among methods tested: Priestley-Taylor and Penman-Monteith methods resulted in PET means that were about twice those obtained with the Hargreaves and Baier-Robertson methods. The higher PET means were associated with an excessive estimation of net radiation. We used the Baier-Robertson method to generate the other estimates reported herein. EPIC generally overestimated total soil water, but it still allowed clear differentiation among rotation phases and times of the year, and provided adequate estimates of water during the critical shot-blade stage. Water estimates by soil layer were also generally overpredicted, especially at depths from 0.15 to 0.60 m, but we were able to differentiate among rotation phases and times of the year. Precision of these latter estimates was generally low, accounting at most for 27% of the variability, and varied by soil layer, rotation phase and time of the year. Nitrate-N estimates tended to be lower than measured values, especially at depths below 0.3 m and during vegetative growth phases. However, the estimates also allowed us to distinguish among the rotation phases and times of the year. Total N and organic C were satisfactorily estimated by EPIC. In general, EPIC provided adequate long-term estimates of the environmental quality indicators tested. Key words: Environmental quality, environmental modelling, sustainability, spring wheat, fallow, potential evapotranspiration methods

Nitrogen mineralization characteristics of forest floor organic matter on slash-burned sites in coastal British Columbia

1991 ◽  
Vol 21 (2) ◽  
pp. 235-241
Author(s):  
J. W. Fyles ◽  
I. H. Fyles ◽  
M. C. Feller
Keyword(s):  
Organic Matter ◽  
Nitrogen Mineralization ◽  
N Mineralization ◽  
Forest Floor ◽  
Soil Survey ◽  
Total N ◽  
Potentially Mineralizable N ◽  
N Fertility ◽  
Low K ◽  
Floor Material

Nitrogen mineralization characteristics of the dominant types of organic matter in the forest floor of slash-burned sites were measured using a 26-week aerobic incubation. Six classes of forest floor material were distinguished on the basis of morphology and N mineralization characteristics. Fermentation layer materials, matted together with fungal hyphae, had a high content of total and potentially mineralizable N (N0) (7804 and 2816 μg/g, respectively) and mineralized the most N during incubation (1605 μg/g). Decayed wood had the lowest level of total N (1816 μg/g) and N0 (195 μg/g) and mineralized the least N (266 μg/g) despite a high inherent mineralization rate (k) (0.16). Humified materials (Hd and Hr) occupied a midrange, with the exception of those from thin residual horizons, which had high N0 values (2246–6009 μg/g) and low k-values (0.005–0.012). The significant differences in N mineralization among organic materials that are morphologically or ecologically distinct in the field suggest that it may be possible to assess site N fertility using intensive forest floor and soil survey data and information on the N characteristics of dominant horizon types.

scholarly journals Forms and accumulation of copper and zinc in a sandy typic hapludalf soil after long-term application of pig slurry and deep litter

2013 ◽  
Vol 37 (3) ◽  
pp. 812-824 ◽  
Author(s):  
Tadeu Luis Tiecher ◽  
Carlos Alberto Ceretta ◽  
Jucinei José Comin ◽  
Eduardo Girotto ◽  
Alcione Miotto ◽  
...  
Keyword(s):  
Soil Profile ◽  
Surface Soil ◽  
Soil Layer ◽  
Soil Samples ◽  
Pig Slurry ◽  
Soil Layers ◽  
Surface Soil Layer ◽  
N Requirement ◽  
Cu And Zn

Successive applications of pig slurry and pig deep litter may lead to an accumulation of copper (Cu) and zinc (Zn) fractions in the soil profile. The objective of this study was to evaluate the Cu and Zn forms and accumulation in a Sandy Typic Hapludalf soil after long-term application of pig slurry and deep litter. In March 2010, eight years after initiating an experiment in Braço do Norte, Santa Catarina (SC), Brazil, on a Sandy Typic Hapludalf soil, soil samples were collected from the 0-2.5, 2.5-5.0, 5-10 and 10-15 cm layers in treatments consisting of no manure application (control) and with applications of pig slurry and deep litter at two levels: the single and double rate of N requirement for maize and black oat succession. The soil was dried, ground in an agate mortar and analyzed for Cu and Zn contents by 0.01 mol L-1 EDTA and chemically fractionated to determine Cu and Zn. The applications of Pig deep litter and slurry at doses equivalent to 90 kg ha-1 N increased the contents of available Cu and Zn in the surface soil layer, if the double of this dose was applied in pig deep litter or double this dose in pig slurry, Cu and Zn migrated to a depth of 15 cm. Copper is accumulated mainly in the organic and residual fractions, and zinc preferentially in the fraction linked to clay minerals, especially in the surface soil layers.

Nitrogen mineralization in forest soil profiles from central Alberta

1987 ◽  
Vol 17 (3) ◽  
pp. 242-249 ◽  
Author(s):  
J. W. Fyles ◽  
W. B. McGill
Keyword(s):  
Nitrogen Mineralization ◽  
Soil Profiles ◽  
Forest Site ◽  
N Availability ◽  
Total N ◽  
Short And Long Term ◽  
Potentially Mineralizable N ◽  
N Fertility ◽  
Time Frames

The nitrogen mineralization characteristics of soils from stands dominated by jack pine (Pinusbanksiana Lamb.) and white spruce (Piceaglauca (Moench) Voss) were examined using a 37-week incubation with periodic leaching to allow measurement of mineralized N. Soils were compared on the basis of total N, N mineralized during the incubation, potentially mineralizable N, mineralization rate constant, and nitrification potential. Nitrogen characteristics of LFH horizons primarily reflected the age and species composition of the existing vegetation while those of A horizons appeared to relate to conditions in previous as well as present stands. Characteristics of B horizons were independent of vegetation implying control by long-term accumulation and transformation of N within the soil. The N fertility of a forest site therefore represents the integration of processes acting within different time frames and an understanding of the relative contributions of short- and long-term processes in the control of N availability is required for efficient fertility management.

scholarly journals Accumulation of copper and zinc in soil and plant within ten-year application of different pig manure rates

2013 ◽  
Vol 59 (No. 11) ◽  
pp. 492-499 ◽  
Author(s):  
Y. Xu ◽  
W. Yu ◽  
Q. Ma ◽  
H. Zhou
Keyword(s):  
Pig Manure ◽  
Threshold Values ◽  
Fresh Weight ◽  
Negative Effects ◽  
Total N ◽  
Application Rates ◽  
Continuous Application ◽  
Cu And Zn ◽  
High Application

Fertilization of crops with pig manure is a common practice throughout the world. Nevertheless, due to the relatively high copper (Cu) and zinc (Zn) contents in pig manure, continuous application of pig manure could have negative effects on soil and plant. The study aimed at the impacts of long-term applying different pig manure rates (equivalently 0, 100, 250 and 500 kg total N/ha/year from 2002 to 2008 and 0, 10, 25 and 50 t fresh weight/ha/year from 2009 to 2011, respectively) on Cu and Zn accumulation in soil and plant. During the 10 years of the experiment, a total of 2.04 to 10.20 kg/ha/year for Cu, 3.15 to 15.73 kg/ha/year for Zn were applied to the soil. Results from this study showed that long-term pig manure application resulted in serious accumulation of Cu and Zn in soil, total Cu and Zn concentrations increased by 204% and 107% at high application rates, respectively. Although topsoil Cu and Zn concentrations were below concentrations considered phytotoxic to crops, according to current Chinese legislation, it would take only less time than 16 and 27 years of high application rates to reach the allowable limits. Our result also suggested that Cu and Zn leaching occurred in the tested soil. The Cu and Zn concentrations in stalks and grains were not affected by the application of pig manure, and these values were lower than the threshold values for animal and human ingestion.

scholarly journals Effects of Short-term Tillage of a Long-term No-Till Land on Quantity and Quality of Organic C and N in Two Contrasting Soil Types

2016 ◽  
Vol 5 (3) ◽  
pp. 43 ◽  
Author(s):  
Miles Dyck ◽  
Sukhdev S. Malhi ◽  
Marvin Nyborg ◽  
Dyck Puurveen
Keyword(s):  
Soil Layer ◽  
N Fertilizer ◽  
Average Increase ◽  
Short Term ◽  
Organic C ◽  
Soil Layers ◽  
Positive Effects ◽  
No Till ◽  
N Treatment

<p>Pre-seeding tillage of long-term no-till soil may alter soil quality by changing some properties, but the magnitude of change depends on soil type and climatic conditions. Effects of short-term (2 or 3 years) tillage (hereafter called reverse tillage [RT]) of land previously under long-term no-till (NT, 29 or 30 years), with straw management (straw removed [S<sub>Rem</sub>] and straw retained [S<sub>Ret</sub>]) and N fertilizer rate (0, 50 and 100 kg N ha<sup>-1 </sup>in S<sub>Ret</sub>, and 0 kg N ha<sup>-1 </sup>in S<sub>Rem</sub> plots) were determined in autumn 2011 on total organic C (TOC) and N (TON), light fraction organic C (LFOC) and N (LFON), and mineralizable N (N<sub>min</sub>) in the 0-7.5, 7.5-15, or 15-20 cm soil layers at Breton (Gray Luvisol [Typic Cryoboralf] loam) and Ellerslie (Black Chernozem [Albic Argicryoll] loam), Alberta, Canada. Short-term RT following long-term NT had no significant negative effect on TOC and TON in soil at both sites, although these parameters tended to be slightly lower in the 0-7.5 cm soil layer with RT compared to NT. For the zero-N treatment, S<sub>Ret</sub> had greater TOC and TON compared to S<sub>Rem</sub> in both soil layers at both sites. On average, over both sites, TOC and TON in the 0-15 cm soil increased by 2.08 Mg C ha<sup>-1</sup> and 0.216 Mg N ha<sup>-1</sup>, respectively. Application of N fertilizer increased TOC and TON in both soil layers, up to the 50 kg N ha<sup>-1</sup> rate at Breton (by 7.96 Mg C ha<sup>-1</sup> and 0.702 Mg N ha<sup>-1</sup> in the 0-15 cm soil) and up to the 100 kg N ha<sup>-1</sup> rate at Ellerslie (by 5.11 Mg C ha<sup>-1</sup> and 0.439 Mg N ha<sup>-1</sup> in the 0-15 cm soil). In both RT and NT treatments, the effects of N rate on TOC and TON were similar for S<sub>Ret</sub> and S<sub>Rem. </sub>There was greater LFOC and LFON in the 7.5-15 cm soil layer with RT than NT at both sites. In the 0-15 cm soil layer, averaged over both sites, RT increased LFOC by 66 kg C ha<sup>-1</sup> and LFON by 4.0 kg N ha<sup>-1</sup>. In both 0-7.5 and 7.5-15 cm soil layers, LFOC and LFON increased with S<sub>Ret</sub> compared to S<sub>Rem.</sub> Averaged over both sites, the increase in LFOC and LFON in the 0-15 cm soil was 97 kg C ha<sup>-1</sup> and 3.5 kg N ha<sup>-1</sup>, respectively. Mass of LFOC and LFON increased dramatically in both soil layers with application of N fertilizer up to the 100 kg N ha<sup>-1</sup> rate at both sites, with an average increase of 866 kg C ha<sup>-1</sup> and 45.5 kg N ha<sup>-1</sup>. In the zero-N treatment, LFOC and LFON increased with S<sub>Ret</sub> compared to S<sub>Rem</sub> under RT at Breton and under NT at Ellerslie. On average, tillage had no effect on N<sub>min</sub> in soil, but S<sub>Ret</sub> increased N<sub>min </sub>in soil in both RT and NT, with an average increase of 4.8 kg N ha<sup>-1</sup>. Application of N fertilizer increased N<sub>min</sub> in the 0-20 cm soil up to 50 kg N ha<sup>-1</sup> rate at Breton (by 13.7 kg N ha<sup>-1</sup>) and up to 100 kg N ha<sup>-1</sup> rate at Ellerslie (by 18.6 kg N ha<sup>-1</sup>). In conclusion, RT had no effect on TOC, TON and N<sub>min</sub> in soil, but LFOC and LFON increased with RT compared to NT in the 7.5-15 cm layer at one site. S<sub>Ret</sub> and N fertilization usually had dramatic positive effects on TOC, TON, LFOC, LFON and N<sub>min</sub> in soil compared to the corresponding treatments.</p>

SOIL ORGANIC MATTER CHARACTERISTICS AFTER LONG-TERM CROPPING TO VARIOUS SPRING WHEAT ROTATIONS

1987 ◽  
Vol 67 (4) ◽  
pp. 845-856 ◽  
Author(s):  
H. H. JANZEN
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Fertility ◽  
Crop Rotation ◽  
Spring Wheat ◽  
N Mineralization ◽  
Soil Layer ◽  
Organic C ◽  
C And N

Soil from a long-term crop rotation study conducted at Lethbridge, Alberta was analyzed to determine the influence of various spring wheat rotations with and without perennial forages on total and mineralizable soil organic matter contents. Crop rotations considered included: continuous wheat (W), fallow-wheat (FW), fallow-wheat-wheat (FWW), and fallow-wheat-wheat-forage-forage-forage (FWWAAA) in which the forage was a mixture of alfalfa and crested wheat grass. The organic C and N contents of soil after 33 yr of cropping were highest in treatments W and FWWAAA, and decreased with increasing frequency of fallow in the rotation. The inclusion of the perennial forage in the rotation did not increase organic C and N levels above those observed in the continuous wheat treatment (W). Differences in levels of mineralizable organic matter among treatments, as measured in laboratory incubations, were much greater than differences in total organic matter content among treatments. In the surface soil layer (0–15 cm), N mineralization was significantly higher in treatment W than in treatments FWW and FWWAAA, and was more than twice that observed in treatment FW. In the subsurface soil layer (15–30 cm), N mineralization was greatest in treatment FWWAAA when sampled just after the plowdown of forage. Effects of crop rotation on C mineralization were similar to those observed for N. Levels of mineralized organic matter were closely related to levels of "light fraction" material (specific gravity < 1.59 g cm−3), which is believed to consist primarily of incompletely decomposed organic matter of plant origin. Differences in amounts of mineralizable organic matter among treatments were attributed to varying frequencies and patterns of crop residue additions. The pronounced effects of crop rotation on the distribution of organic matter among labile and humified organic matter will have a strong impact on soil fertility and may need to be taken into consideration in the development of fertilizer recommendations. It was concluded that inclusion of perennial forages in spring wheat rotations for the purpose of enhancing soil fertility and organic matter levels was not justified under semiarid conditions. Key words: Carbon, nitrogen, mineralization

Long-term response of forest plantation productivity and soils to a single application of municipal biosolids

2015 ◽  
Vol 95 (2) ◽  
pp. 187-199 ◽  
Author(s):  
Rock Ouimet ◽  
Anne-Pascale Pion ◽  
Marc Hébert
Keyword(s):  
Picea Glauca ◽  
Soil Layer ◽  
Forest Plantations ◽  
Forest Plantation ◽  
Single Application ◽  
Total N ◽  
Municipal Biosolids ◽  
Plantation Productivity ◽  
Term Response

Ouimet, R., Pion, A.-P. and Hébert, M. 2015. Long-term response of forest plantation productivity and soils to a single application of municipal biosolids. Can. J. Soil Sci. 95: 187–199. After 16 to 19 yr, we revisited four experimental trials set up in the early 1990s to evaluate the long-term impact of municipal biosolids applied in forest plantations. Tree growth and the soil were sampled to determine the effects of a single application of biosolids applied at (liquid equivalent) rates of 0, 130, 200, and 400 m3ha−1. Tree radial growth responded markedly to biosolids in the young plantations, increasing from 18 % for Pinus resinosa to 62 % for Picea glauca, and up to 700 % for Quercus sp. Increases in phosphorus (P) concentrations in the tree foliage in response to biosolids could still be detected in the conifer trials. In the top 0–5 cm soil layer, organic carbon (C), total nitrogen (N), P, and copper (Cu) concentrations and pools increased, while soil compaction and bulk density decreased. In the deepest soil layer sampled (20–40 cm depth), the total N and calcium (Ca) pools were reduced by the biosolids treatments, while the pool of exchangeable acidity increased. Our observations indicate that a single application of liquid biosolids up to 400 m3ha−1(30 t ha−1DM) in young forest plantations is a sustainable practice without undue risk to such podzolic soils.

Long-term natural succession improves nitrogen storage capacity of soil on the Loess Plateau, China

Soil Research ◽  
2014 ◽  
Vol 52 (3) ◽  
pp. 262 ◽  
Author(s):  
Lei Deng ◽  
Kai-bo Wang ◽  
Zhou-ping Shangguan
Keyword(s):  
Loess Plateau ◽  
Forest Succession ◽  
Soil Layer ◽  
Soil N ◽  
The Loess Plateau ◽  
Natural Succession ◽  
Soil Layers ◽  
N Storage ◽  
Shrub Community

Land-use change resulting from natural succession enhances the nitrogen (N) accumulation capacity of terrestrial ecosystems. To explore those factors that foster changes in soil N storage under evolving conditions of vegetation succession, a study on N storage at differing stages along a 150-year chronosequence was conducted in the Ziwuling Forest Region in the central part of the Loess Plateau, China. A principal finding was the rapid increase in N storage in the 0–60 cm soil layer, which achieves a stable value after the shrub community stage (~50–60 years), leading to the overall long-term (~150 years) accumulation of soil stored N in the post-abandonment secondary forest. Soil N accumulated mainly in the pioneer stage and showed a significant increase before the shrub community stage (P < 0.05). The N storage in the 0–60 cm soil layer changed from 5.8 to 8.4 Mg ha–1 during the transition from abandoned farmland (~3–5 years) to climax community (Quercus liaotungensis Koidz forest) (~150 years). The N storage values were higher in the upper (<20 cm) than the deeper soil layers (>20 cm). In the topsoil (0–20 cm), N storage values showed a markedly positive correlation with soil organic carbon (SOC), total soil N and fine roots. In the deeper soil layers (20–40 and 40–60 cm) there was a correlation only with TN. Soil bulk density, soil water content and soil pH were not the determining factors behind N storage values in the topsoil (0–20 cm), although they did show negative, positive and negative correlations, respectively. In addition, they showed no consistent correlations in the lower soil layer (<20 cm). The results suggest that changes to N storage values were the result of the accumulation of SOC, total N and primary productivity during the process of forest succession, and this capacity is positively related to post-abandonment forest succession on the Loess Plateau, China.

scholarly journals A Reliable U-trough Runoff Collection Method for Quantifying the Migration Loads of Nutrients at Different Soil Layers under Natural Rainfall

2021 ◽  
Vol 13 (4) ◽  
pp. 2050
Author(s):  
Yi Wang ◽  
Chengsheng Ni ◽  
Sheng Wang ◽  
Deti Xie ◽  
Jiupai Ni
Keyword(s):  
Soil Layer ◽  
Soil Nutrient ◽  
Purple Soil ◽  
Collection Method ◽  
Total N ◽  
Soil Layers ◽  
Natural Rainfall ◽  
Significant Difference ◽  
Subsurface Runoff ◽  
Runoff Sediment

Long-term quantification of the migration loads of subsurface runoff (SSR) and its collateral soil nutrients among different soil layers are still restricted by the runoff collection method. This study tested the reliability of the U-trough collection methods (UCM), compared with the seepage plate collection method (SPM), in monitoring the runoff, sediment and nutrient migration loads from different soil layers (L1: 0–20 cm depth; L2: 20–40 cm depth; L3: 40–60 cm depth) for two calendar years under natural rainfall events. The results suggested that the U-trough could collect nearly 10 times the SSR sample volume of the seepage plate and keep the sampling probability more than 95% at each soil layer. The annual SSR flux from L1 to L3 was 403.4 mm, 271.9 mm, and 237.4 mm under the UCM, 14.35%, 10.56%, and 8.41% lower than those under the SPM, respectively. The annual net migration loads of sediment, TN, and TP from the L1 layer under the UCM were 49.562 t/km2, 19.113 t/km2 and 0.291 t/km2, and 86.62%, 41.21% and 81.78% of them were intercepted by the subsoil layers (L2 and L3), respectively. While their migration loads under the SPM were 48.708 t/km2, 22.342 t/km2 and 0.291 t/km2, and 88.24%, 53.06% and 80.42% of them were intercepted, respectively. Under both methods, the average leached total n (TN), total p (TP) concentrations per rainfall event and their annual migrated loads at each soil layer showed no significant difference. In conclusion, the UCM was a reliable quantitative method for subsurface runoff, sediment, and soil nutrient migration loads from diverse soil layers of purple soil sloping cultivated lands. Further studies are needed to testify the availability in other lands.

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