scholarly journals Short-term effects of early-season fire on herbaceous composition, dry matter production and soil fertility in Guinea savanna, Nigeria

2016 ◽  
Vol 68 (1) ◽  
pp. 7-16 ◽  
Author(s):  
Stephen Oyedeji ◽  
Friday Onuche ◽  
David Animasaun ◽  
Clement Ogunkunle ◽  
Oludare Agboola ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Dry Matter ◽  
Nutrient Dynamics ◽  
Ecological Impact ◽  
Ground Cover ◽  
Dry Matter Yield ◽  
Short Term ◽  
Early Season ◽  
Guinea Savanna ◽  
Short Term Effects

The ecological impact of fire regimes on plant diversity and soil fertility has become a subject of intense discussion, especially in savannas where recurring incidences are common. This study assessed the short-term effects of early-season fire on herbaceous composition, dry matter yield and soil fertility in the Guinea savanna belt of Nigeria. Data on ground cover, dry matter yield (DMY) in plants and concentrations of C, N, P, K, Ca and Mg in soil were collected from 10 delineated subplots in the burned and unburned zones of four sites after annual wildfire had occurred. Ground cover was significantly higher in the burned zones, increasing progressively from January to April (dry season). Eleven herbaceous species in addition to 2 tree seedlings occurred and represented families of Asteraceae, Cyperaceae, Fabaceae and Poaceae. Digitaria nuda, Brachiaria lata, Daniellia oliveri and Aeschynomene indica were limited to the burnt zones while Cyperus tuberosus, Mariscus alternifolius and Rottboellia cochinchinensis were restricted to the unburned zones. DMY ranged from 0.32 g m-2 (Desmodium tortuosum) to 52.96 g m-2 (Megathyrsus maximus). Average biomass in the burned and unburned sites was 35.86 g m-2 and 28.42 g m-2, respectively. Soil C, N and P concentrations decreased (positive deterioration index - DI), while those of K, Ca and Mg improved (negative DI) in the burned sites. Burning altered the growth (ground cover) and composition of plant species in the short term, and could significantly influence soil nutrient dynamics in the long term, especially with recurring fire events.

scholarly journals Arrowleaf clover: potential for dryland farming systems in New Zealand

2008 ◽  
pp. 239-243 ◽  
Author(s):  
P.M. Evans ◽  
A. Mills
Keyword(s):  
New Zealand ◽  
Soil Fertility ◽  
Dry Matter ◽  
Subterranean Clover ◽  
Farming Systems ◽  
Dry Matter Yield ◽  
Dryland Farming ◽  
Silage Production ◽  
Trifolium Vesiculosum ◽  
Lincoln University

Arrowleaf clover (Trifolium vesiculosum L.) is a late maturing annual legume which has the potential to be used in a range of farming systems such as finishing lambs through to silage production and building soil fertility for future cropping. An experiment at Lincoln University, Canterbury, evaluated the performance of 'Arrotas' arrowleaf clover relative to white and subterranean clover Keywords: climate evaluation, T. repens, T. subterraneum, T. vesiculosum, dry matter yield

scholarly journals Short-term effects of elevated precipitation and nitrogen on soil fertility and plant growth in a Neotropical savanna

Ecosphere ◽  
2012 ◽  
Vol 3 (4) ◽  
pp. art31 ◽  
Author(s):  
Stella M. Copeland ◽  
Emilio M. Bruna ◽  
Laura V. Barbosa Silva ◽  
Michelle C. Mack ◽  
Heraldo L. Vasconcelos
Keyword(s):  
Plant Growth ◽  
Soil Fertility ◽  
Neotropical Savanna ◽  
Short Term ◽  
Short Term Effects

EFFECT OF NITROGEN FERTILIZER AND CLIPPING FREQUENCY ON THE DRY MATTER YIELD AND PERSISTENCY OF INTERMEDIATE WHEATGRASS

1969 ◽  
Vol 49 (4) ◽  
pp. 435-446 ◽  
Author(s):  
T. Lawrence ◽  
R. Ashford
Keyword(s):  
Regression Analysis ◽  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Statistical Approach ◽  
Ground Cover ◽  
N Fertilizer ◽  
Dry Matter Yield ◽  
Intermediate Wheatgrass ◽  
Agropyron Intermedium ◽  
Management Factors

The effects of six rates of N fertilizer and five frequencies of clipping on the dry matter yield and persistency of irrigated intermediate wheatgrass, Agropyron intermedium (Host.) Beauv., were studied during 1961–62 at one site, and 1963–65 at a second site.The dry matter yield increased with increasing rates of N fertilizer, and with longer intervals between clippings. Highest yields were obtained with the 375-kg/ha rate of N fertilizer and the 8-week clipping interval.Fertilizer level did not have a significant effect on either the basal ground cover of grass or the degree of winter injury suffered by intermediate wheat-grass. However, clipping frequency was closely related to both of these factors.Application of a regression analysis to the study of significant interactions among management factors proved to be a very useful statistical approach.

Reuse of treated wastewater and sewage sludge for fertilization and irrigation

2011 ◽  
Vol 64 (4) ◽  
pp. 871-879 ◽  
Author(s):  
Gonçalo Sousa ◽  
David Fangueiro ◽  
Elizabeth Duarte ◽  
Ernesto Vasconcelos
Keyword(s):  
Sewage Sludge ◽  
Dry Matter ◽  
Organic Fertilizer ◽  
Wastewater Irrigation ◽  
Treated Wastewater ◽  
Soil Parameters ◽  
Dry Matter Yield ◽  
Short Term ◽  
Treated Wastewater Irrigation ◽  
Sludge Application

The objective of the present work was to assess the short term potential of treated wastewater and sewage sludge for ornamental lawn fertilization and irrigation. A field experiment was performed and the following treatments were considered: sewage sludge application + irrigation with public water; sewage sludge application + irrigation with treated wastewater; irrigation with public water; irrigation with treated wastewater (TW). Irrigation with treated wastewater showed a positive effect on lawn installation through higher growth of grass (1,667 cm) and higher dry matter yield (18,147 g m−2). These results represent a significant increase in the grass yield compared with public water irrigation. The grass height (2,606 cm) and dry matter yield (23,177 g m−2) increased even more, when sewage sludge produced in the wastewater treatment plant (WWTP) was applied to soil, which proves once more its benefits as an organic fertilizer. At the end of the experiment, an increase of some soil parameters (pH, electrical conductivity, organic matter, Ca2+, Na+, K+, Mg2+ and NH4+) was observed, indicating that treated wastewater irrigation can cause a soil sodization. This short term study indicated that use of treated wastewater and sewage sludge for ornamental lawn fertilization and irrigation is an environmentally sustainable option for re-use of the WWTP by-products.

scholarly journals Effect of different periods of irrigation on growth and yield of Cenchrus ciliaris at semi-arid zone of North Darfur State, Sudan

2021 ◽  
Vol 9 (2) ◽  
pp. 001-004
Author(s):  
Mohamedalmontasir A. M. Mohamed ◽  
Mahmoud H. Mohamed
Keyword(s):  
Plant Height ◽  
Dry Matter ◽  
Plant Density ◽  
Arid Zone ◽  
Ground Cover ◽  
Dry Matter Yield ◽  
Cenchrus Ciliaris ◽  
Buffel Grass ◽  
Ground Cover Plant ◽  
Semi Arid

Buffel grass Cenchrus ciliaris L. (Poaceae) is recognized as one of Australia's most serious environmental weeds. This introduced grass has been associated with loss of native species and alteration of fire regimes. However, it is also highly valued as a pasture species for arid and semi-arid zones and its weed status is highly controversial. This study was conducted at the private farm, Southern part of Alfashir Airport, North Darfur State, Sudan. The objective was to evaluate the effect of different periods of irrigation (DPI) on growth and forage yield of Cenchrus ciliaris during years of 2018 and 2019. The experiment was laid-out in a randomized complete block design (RCBD) with four replicates, the plot size was 8x5 m. Data collected included plant density, plant ground cover, plant height and dry matter yield. DPI showed significant effect on plant density, plant ground cover, Plant height and dry matter yield. The study showed that irrigation every 7 days (Ir1) was suitable for buffel grass at semi-arid zone in Sudan. Quantitative studies are needed to determine its ecological effects.

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