Nitrogen accretion, soil fertility, and Douglas-fir nutrition in association with redstem ceanothus

1983 ◽  
Vol 13 (1) ◽  
pp. 122-125 ◽  
Author(s):  
Dan Binkley ◽  
Lynn Husted
Keyword(s):  
Nutrient Content ◽  
Douglas Fir ◽  
Soil N ◽  
Total N ◽  
Available N ◽  
Nutrient Contents ◽  
Mixed Plantations ◽  
Attractive Candidate ◽  
Foliar Nutrient ◽  
Total Soil N

Nutrient contents of soil and foliage of Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) saplings were determined in areas without redstem ceanothus (Ceanothussanguineus Pursh), at the edges of redstem ceanothus patches, and within patches. Tree growth was not examined. Total soil N (0–15 cm depth) was 50–75% greater at the edge of and within redstem patches than in areas without redstem. Assuming soil N was initially similar at all three positions, N accretion was 24–50 kg•ha−1•year−1 for 10 years. Total N accretion in the ecosystem was probably 45–80 kg•ha−1•year−1. Available N index and extractable Ca and Mg were 2–3 times greater at the edges of and within the redstem patches than outside them. Concentrations of N, Ca, and Mg in the Douglas-fir foliage were lowest outside the patches, intermediate at the edges, and highest within the patches. Because needle weight was lower for saplings within patches than for those at the edges, the latter had the greatest foliar nutrient content. Enhancement of site fertility by redstem ceanothus, as well as its benefits to wildlife and slope stability, make it an attractive candidate for mixed plantations with conifers.

scholarly journals Chemical and Microbial Characterization of Washed Rice Water Waste to Assess Its Potential as Plant Fertilizer and for Increasing Soil Health

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2391
Author(s):  
Abba Nabayi ◽  
Christopher Teh Boon Sung ◽  
Ali Tan Kee Zuan ◽  
Tan Ngai Paing ◽  
Nurul Izzati Mat Akhir
Keyword(s):  
Bacterial Species ◽  
Soil Health ◽  
Nutrient Content ◽  
Nutrient Concentrations ◽  
Total N ◽  
Available N ◽  
Microbial Characterization ◽  
Rice Water ◽  
Water Waste

The wastewater from washed rice water (WRW) is often recommended as a source of plant nutrients in most Asian countries, even though most current research on WRW lack scientific rigor, particularly on the effects of rice washing intensity, volumetric water-to-rice ratio (W:R), and condition of the WRW before plant application. This research was thus carried out: (1) to determine how various rice washing intensities, fermentation periods (FP), and W:R would affect the nutrient content in WRW, and (2) to isolate, identify, and characterize the bacterial community from fermented WRW. The WRW was prepared at several rice washing intensities (50, 80, and 100 rpm), FP (0, 3, 6, and 9 days), and W:R (1:1, 3:1, and 6:1). The concentrations of all elements (except P, Mg, and Zn) and available N forms increased with increasing FP and W:R. Beneficial N-fixing and P- and K-solubilizing bacteria were additionally detected in WRW, which helped to increase the concentrations of these elements. Monovalent nutrients -N, , and K are soluble in water. Thus, they were easily leached out of the rice grains and why their concentrations increased with W:R. The bacteria population in WRW increased until 3 days of fermentation, then declined, possibly because there was an insufficient C content in WRW to be a source of energy for bacteria to support their prolonged growth. While C levels in WRW declined over time, total N levels increased then decreased after 3 days, where the latter was most possibly due to the denitrification and ammonification process, which had led to the increase in -N and . The optimum FP and W:R for high nutrient concentrations and bacterial population were found to be 3 to 9 days and 3:1 to 6:1, respectively. WRW contained nutrients and beneficial bacterial species to support plant growth.

scholarly journals Evaluation of nitrogen availability indices and their relationship with plant response on acidic soils of India

2013 ◽  
Vol 59 (No. 6) ◽  
pp. 235-240 ◽  
Author(s):  
Bordoloi LJ ◽  
Singh AK ◽  
Manoj-Kumar ◽  
Patiram ◽  
S. Hazarika
Keyword(s):  
Nitrogen Availability ◽  
N Uptake ◽  
Reliable Estimate ◽  
Plant Responses ◽  
N Availability ◽  
Soil N ◽  
Acidic Soils ◽  
Total N ◽  
Large Variability ◽  
Available N

Plant&rsquo;s nitrogen (N) requirement that is not fulfilled by available N in soil has to be supplied externally through chemical fertilizers. A reliable estimate of soil N-supplying capacity (NSC) is therefore essential for efficient fertilizer use. In this study involving a pot experiment with twenty acidic soils varying widely in properties, we evaluated six chemical indices of soil N-availability viz. organic carbon (C<sub>org</sub>), total N (N<sub>tot</sub>), acid and alkaline-KMnO<sub>4</sub> extractable-N, hot KCl extractable-N (KCl-N) and phosphate-borate buffer extractable-N (PBB-N), based on their strength of correlation with available-N values obtained through aerobic incubation (AI-N) and anaerobic incubation (ANI-N), and also with the dry matter yield (DMY), N percentage and plant (maize) N uptake (PNU). In general, the soils showed large variability in NSC as indicated by variability in PNU which ranged from 598 to 1026 mg/pot. Correlations of the N-availability indices with AI-N and ANI-N decreased in the order: PBB-N (r = 0.784** and 0.901**) &gt; KCl-N (r = 0.773** and 0.743**) &gt; acid KMnO<sub>4</sub>-N (r = 0.575** and 0.651**) &ge; C<sub>org</sub> (r = 0.591** and 0.531**) &ge; alkaline KMnO<sub>4</sub>-N (r = 0.394** and 0.548**) &gt; N<sub>tot</sub> (r = 0.297** and 0.273*). Of all the indices evaluated, PBB-N showed the best correlations with plant parameters as well (r = 0.790** and 0.793** for DMY and PNU, respectively). Based on the highest correlations of PBB-N with biological indices as well as plant responses, we propose PBB-N as an appropriate index of N-availability in the acidic soils of India and other regions with similar soils.

Influence of growing various crops in five different fixed rotations on the changes in nitrate and total nitrogen content of soils

1985 ◽  
Vol 104 (3) ◽  
pp. 609-613 ◽  
Author(s):  
K. N. Sharma ◽  
A. L. Bhandari ◽  
M. L. Kapur ◽  
D. S. Rana
Keyword(s):  
Nitrogen Content ◽  
Total Nitrogen ◽  
Soil Nitrogen ◽  
Nitrate Nitrogen ◽  
Balance Sheet ◽  
Total Nitrogen Content ◽  
Soil N ◽  
Total N ◽  
Soil Layers ◽  
Total Soil N

SummaryThe results on the influence of various crops in five different fixed rotations on the ohanges in nitrate and total N content of soils are reported. Groundnut contributed largely to the accumulation of nitrate nitrogen in the soil profile (to a depth of 120 cm). Bajra fodder exhausted the soil nitrogen reserve to a great extent. Wheat and maize, in a rotation, reduced nitrate leaching to deeper soil layers. Summer moong also left a large amount of unabsorbed nitrate in the profile. Total nitrogen content of the soil decreased after the harvest of cereals. Maximum depletion occurred after the harvest of bajra crop. Potato (a crop which received a heavy dressing of N fertilizer) and legumes contributed to the soil N reserve. A balance sheet of N indicated net gains of total soil N in four of the five cropping sequences. A net loss of 75 kg N/ha was observed in bajra fodder-potato-wheat rotation.

scholarly journals The Effects of Mixed Source Fertilizer Application on Vertisol Fertility and Growth of Mustard

2017 ◽  
Vol 22 (3) ◽  
pp. 139-148
Author(s):  
Jauhari Syamsiyah ◽  
Sumarno Sumarno ◽  
Suryono Suryono ◽  
Nur Echsan Muhamat Rajab ◽  
Ida Aryaningrum
Keyword(s):  
Block Design ◽  
Nutrient Content ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Available P ◽  
Fresh Weight ◽  
Total N ◽  
Organic C ◽  
Nutrient Contents ◽  
Exchangeable K

Soil fertility is a crucial factor determining the growth and yield of plants. The increase of nutrient content and availability in soil can be achieved by fertilization. A field experiment was conducted using a Randomized Completely Block Design (RCBD) with two factors and three replications in order to study the effects of Mixed Source of Fertilizer (MSF) application on the nutrient contents in Vertisol and its relationship to the growth and yield of mustard. The first factor was the three MSF formulas (F1, F2, F3) and second factor was the doses of MSF (0; 2.5; 5.0; 7.5; 10 Mg ha-1) applied to the soil. At the end of the experiment, the soil pH, CEC, organic-C, total-N, available-P and exchangeable-K contents were measured. The results show that there are no significant differences on the soil chemical characteristics, such as pH, organic-C content, available-P, exchangeable-K, -Ca and -Mg measured after application of different MSF formulas to the soil. Meanwhile, the increase of MSF doses applied to the soil significantly increases organic-C content, total-N, available-P and exchangeable-K in the soil. The significant increase of available-P (by 29.13%) and total-N (by 24.1%) occured after application of MSF at 5.0 Mg ha-1 and the increase of exchangeable-K (by 50%) is achieved after application of 7.5 Mg ha-1, in comparison to that without MSF application. The height and fresh weight of mustard increase in accordance with the increase of MSF doses applied. The application of 10.0 Mg ha-1 MSF results in the highest height and fresh weight of the mustard up to 63.9% and 620%, respectively. The height and fresh weight of mustard are positively correlated to the total-N, available-P and exchangeable-K in the soil. The MSF is an alternative fertilizer that can be used to improve Vertisol fertility and plant growth. 

scholarly journals Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cycling

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Xianyu Yao ◽  
Qianchun Zhang ◽  
Haiju Zhou ◽  
Zhi Nong ◽  
Shaoming Ye ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Ph ◽  
N Cycling ◽  
N Availability ◽  
Soil N ◽  
Total N ◽  
Available N ◽  
Soil C ◽  
Hot Season ◽  
Dalbergia Odorifera

Abstract Background There is substantial evidence that Eucalyptus for nitrogen (N) absorption and increasing the growth benefit from the introduction of N-fixing species, but the underlying mechanisms for microbially mediated soil N cycling remains unclear. Methods We investigated the changes of soil pH, soil water content (SWC), soil organic carbon (SOC), total N (TN), inorganic N (NH4+-N and NO3−-N), microbial biomass and three N-degrading enzyme activities as well as the biomass and N productivity of Eucalyptus between a pure Eucalyptus urophylla × grandis plantation (PP) and a mixed Dalbergia odorifera and Eucalyptus plantation (MP) in Guangxi Zhuang Autonomous Region, China. Results Compared with the PP site, soil pH, SWC, SOC and TN in both seasons were significantly higher at the MP site, which in turn enhanced microbial biomass and the activities of soil N-degrading enzymes. The stimulated microbial activity at the MP site likely accelerate soil N mineralization, providing more available N (NH4+-N in both seasons and NO3−-N in the wet-hot season) for Eucalyptus absorption. Overall, the N productivity of Eucalyptus at the MP site was increased by 19.7% and 21.9%, promoting the biomass increases of 15.1% and 19.2% in the dry-cold season and wet-hot season, respectively. Conclusion Our results reveal the importance of microbially mediated soil N cycling in the N absorption on Eucalyptus. Introduction of D. odorifera enhances Eucalyptus biomass and N productivity, improve soil N availability and increased soil C and N concentration, which hence can be considered to be an effective sustainable management option of Eucalyptus plantations.

scholarly journals Nutrient contents of soyabeans: A guide for sugarcane growers under fast track land reform programme [FTLRP] in Zimbabwe

2013 ◽  
Vol 13 (57) ◽  
pp. 7372-7382
Author(s):  
MD Shoko ◽  
◽  
M Zhou ◽  
Keyword(s):  
Soil Fertility ◽  
Land Reform ◽  
Soil Classification ◽  
Nutrient Content ◽  
Economic Benefits ◽  
Total N ◽  
Nutrient Contents ◽  
Land Preparation ◽  
Livestock Feeds ◽  
Calcium And Magnesium

Soyabean biomass, stover and roots when incorporate d into the soil can improve the organic matter and the carbon ( C): nitrogen ( N) ratio of the soil. Of its total N, 60 - 90% is translocated into the see d. This research was conducted on sandy clay loams of the lithosol group under the Zimbabwe soil classification system at The Zimbabwe Sugar Association Experiment Station (Z.S.A.E.S) in the South Eastern Lowveld, the leading sugarcane producing region in Zimbabwe . The objectives of this research were to: 1) analyse the nutrient content of the soyabeans under study, 2) assess the contributions of the various soyabean parts to soil fertility, 3) determine the liming potential of the soyabeans and 4) determine the forage potential of the two soyabean varieties as livestock feeds. The following parameters were measured: 1) nutrient composition of the vegetable and grain soyabeans, soyabean biomass 2) nitrogen fixed by both grain and vegetable soyabeans . Vegetable soyabeans (variety S114) and grain soyabeans (variety Storm ) were used for this study . Vegetable soyabeans had higher nitrogen, phosphorus and potassium while grain soyabean s had higher calcium and magnesium. This shows that vegetable soyabeans a s a nitrogen fixing crop have Plural? the potential to ameliorate soil fertility . However, grain soyabeans seem to have better liming potential than vegetable soyabeans. Forage Storm can improve the magnesium and calcium constituency of livestock while vegetable soya beans can influence the phosphorus content . The two elements are critical to lactating cows and young stock. The crops have high levels of calcium and magnesium , which are the critical elements for the improvement of soil pH. Interestingly , high nitrogen (N), phosphorus ( P) and potassium ( K) contents were observed in grain soyabeans. These nutrients in grains are not returned to the soil as the grains are sold as a commercial crop. The economic benefits of growing soya beans accrue from the nutrients that remain in the leaves, petioles, stems and shells that are ploughed into the soil during land preparation.

Soil and Douglas-fir (Pseudotsuga menziesii) foliar nitrogen responses to variable logging-debris retention and competing vegetation control in the Pacific Northwest

2010 ◽  
Vol 40 (2) ◽  
pp. 254-264 ◽  
Author(s):  
Robert A. Slesak ◽  
Timothy B. Harrington ◽  
Stephen H. Schoenholtz
Keyword(s):  
Pacific Northwest ◽  
Pseudotsuga Menziesii ◽  
Douglas Fir ◽  
Soil N ◽  
Vegetation Control ◽  
Competing Vegetation ◽  
Total Soil ◽  
The Pacific ◽  
N Acquisition ◽  
Total Soil N

Experimental treatments of logging-debris retention (0%, 40%, or 80% surface coverage) and competing vegetation control (initial or annual applications) were installed at two sites in the Pacific Northwest following clearcutting Douglas-fir ( Pseudotsuga menziesii (Mirb.) Franco var. menziesii) stands to assess short-term effects on tree N acquisition, soil N supply, and total soil N. Vegetation control treatments began in the first year after harvest, and logging-debris manipulations were installed 2 years after harvest. Annual vegetation control increased foliar N concentration and content in most years at both sites, which was associated with higher available soil N and increased soil water content. Logging-debris retention treatments had no detectable effect on any of the foliar variables or soil available N at either site. There were no treatment effects on total soil N at the site with relatively high soil N, but total soil N increased with logging-debris retention when annual vegetation control was applied at the site with a low initial soil N pool. Competing vegetation control is an effective means to increase tree N acquisition in the initial years after planting while maintaining soil N pools critical to soil quality. The effect of logging-debris retention on tree N acquisition appears to be limited during early years of stand development, but increased soil N with heavy debris retention at certain sites may be beneficial to tree growth in later years.

Leaf Nutrient Resorption of Seagrass Zostera japonica Aschers. et Graebn. in Beihai, Guangxi, China

2013 ◽  
Vol 663 ◽  
pp. 736-742
Author(s):  
Ya Jun Shi ◽  
Hang Qing Fan ◽  
Guang Long Qiu ◽  
Liang Hao Pan ◽  
Sen Li
Keyword(s):  
Leaf Growth ◽  
Nutrient Content ◽  
Nutrient Resorption ◽  
Zostera Japonica ◽  
Senescent Leaf ◽  
Total N ◽  
Nutrient Contents ◽  
Seagrass Meadows ◽  
Adult Leaf ◽  
Fe And Mn

Resorption of nutrients (C, N, P, Ca, Mg, Fe and Mn) from senescent leaves of Zostera japonica and the concentration of nutrients (C, N, P, Ca, Mg, Fe and Mn) in the sediment from three subtropical seagrass meadows (Guchenling, Zhulin and Ronggenshan) in Beihai, Guangxi, China were studied. Resorption efficiencies were quantitatively assessed by comparing nutrient content between the leaf with the highest content and the senescent leaves. In addition, the relationship between nutrient resorption efficiencies and nutrient sources (the sediment and the adult leaf) were evaluated. During the course of leaf development in Z. japonica (young leaf – adult leaf – senescent leaf), C content first rose and then declined; N and P contents gradually declined; but Ca, Mg, Fe and Mn gradually rose. During leaf senescence, resorption efficiencies of C, N, P, Ca, Mg, Fe and Mn were 2.1%, 19.5%, 45.1%, −61.1%, −12.0%, −27.1% and −72.3%, respectively. For Z. japonica, C, N and P contributed to new leaf growth, whereas Ca, Mg, Fe and Mn was not. The nutrient contents of the sediment and adult leaf were not significantly correlated to leaf nutrient resorption efficiencies. It was calculated that for Z. japonica approximately 13.8% of total N demand and 31% of total P demand could be met by internal resorption.

scholarly journals Introduction of Dalbergia Odorifera Enhances Nitrogen Absorption on Eucalyputs Through Stimulating Microbially Mediated Soil Nitrogen-cycling

2021 ◽  
Author(s):  
Xianyu Yao ◽  
Qianchun Zhang ◽  
Haiju Zhou ◽  
Zhi Nong ◽  
Shaoming Ye ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Ph ◽  
N Cycling ◽  
N Availability ◽  
Soil N ◽  
N Accumulation ◽  
Total N ◽  
Available N ◽  
Hot Season ◽  
Dalbergia Odorifera

Abstract Background: There is the substantial evidence that Eucalyptus for nitrogen (N) absorption and increasing the growth benefit from the introduction of N-fixing species, but the underlying mechanisms for microbially mediated soil N cycling remains unclear. Methods: We investigated the changes of soil pH, soil water content (SWC), soil organic carbon (SOC), total N (TN), inorganic N (NH4+-N and NO3--N), microbial biomass and three N-degrading enzyme activities as well as the biomass and N accumulation of Eucalyptus between a pure Eucalyptus urophylla × grandis plantation (PP) and a mixed Dalbergia odorifera and Eucalyptus plantation (MP) in Guangxi Zhuang Autonomous Region, China. Results: Compared with the PP site, soil pH, SWC, SOC and TN in both seasons were significantly higher at the MP site, which in turn enhanced microbial biomass and the activities of soil N-degrading enzymes. The stimulated microbial activity at the MP site likely accelerated soil N mineralization, providing more available N (NH4+-N in both seasons and NO3--N in the wet-hot season) for Eucalyptus absorption. Overall, the N accumulation of Eucalyptus at the MP site was increased by 19.7% and 21.9%, promoting the biomass increases of 15.1% and 19.2% in the dry-cold season and wet-hot season, respectively.Conclusion: Our results reveal the importance of microbially mediated soil N cycling in the N absorption on Eucalyputs. Introduction of D. odorifera can enhance N absorption and growth on Eucalyputs, improve soil N availability and increased soil C sequestration, which hence can be considered to be an effective sustainable management option of Eucalyptus plantations.

scholarly journals Effects of Small-Scale Gold Mining (SGM) to Mercury and Nutrient Contents in Soil in Kokap Subdistrict, Kulonprogo, Yogyakarta

2021 ◽  
Vol 1 (1) ◽  
pp. 191-197
Author(s):  
Rika Ernawati ◽  
Tedy Agung Cahyadi ◽  
Shahensahb Anand Anggian Rambe
Keyword(s):  
Soil Nutrient ◽  
Nutrient Content ◽  
Mercury Content ◽  
Small Scale ◽  
Environmental Damage ◽  
Nutrient Quality ◽  
Total N ◽  
Nutrient Contents ◽  
Gold Processing ◽  
Gold Ore

Gold processing in Dusun Sangon, Kalirejo Village, Kokap Sub district, Kulonprogo Regency, SpecialRegion of Yogyakarta Province uses amalgamation method. Mercury use in gold processing has apotential impact on environmental damage and health of organism. Therefore, management onmercury-contaminated soil is needed to reduce environmental impacts. However, beforeperforming soil management, it is important to conduct research on initial condition of researchlocation, including research on the soil’s nutrient quality and mercury content. Testing wasconducted in the laboratory. Mercury (Hg) content testing used mercury analyzer testing method.pH testing used ISRIC 6th 2002 method. Organic carbon testing used SNI 13-4720-1998 testingmethod. Total nitrogen testing used SNI 2803-2010 testing method. C/N Ratio testing used SNI 13-4720-1998; SNI 2803-2010 testing methods. Results show that mercury contents in residualsamples of gold ore and soil samples were 4.81 mg/kg and 88.63 mg/kg respectively, which wereincluded in TC-B and TC-A in the aforementioned order. Meanwhile, mercury content in gold oreSamples 1 and 2 were 0.28 ppm and 0.14181 ppm respectively. Soil nutrient content parameters ofOrganic C, Total N, and C/N ratio were found to be very low. These results might be influenced byprocessing activities in gold ore mining.

Sign in / Sign up

Export Citation Format

Share Document