Effect of Particle Size and Reused Organic Substrates on Tomato Crop Production

2015 ◽  
Vol 38 (12) ◽  
pp. 1877-1884
Author(s):  
Alberto Gabino Martínez-Gutiérrez ◽  
Angélica Bautista Cruz ◽  
Cirenio Escamirosa Tinoco ◽  
Juana Yolanda López Cruz ◽  
Miguel Urrestarazu
Keyword(s):  
Particle Size ◽  
Crop Production ◽  
Organic Substrates ◽  
Tomato Crop ◽  
Effect Of Particle Size

scholarly journals Effect of particle size of limestone on Ca, Mg and K contents in soil and in sward plants

2011 ◽  
Vol 68 (2) ◽  
pp. 200-208 ◽  
Author(s):  
Ana Viadé ◽  
María Luisa Fernández-Marcos ◽  
Josefina Hernández-Nistal ◽  
Esperanza Alvarez
Keyword(s):  
Particle Size ◽  
Crop Production ◽  
Dry Matter ◽  
Soil Conditions ◽  
Particle Sizes ◽  
Dry Matter Yield ◽  
Effect Of Particle Size ◽  
Lime Reactivity ◽  
Alkaline Earth Cations ◽  
Extractable Soil

Liming increases crop production through improved soil conditions in acidic soils. Among the effects of liming, increased availabilities of alkaline and alkaline-earth cations are worth mention. These availabilities may be affected by the particle size of applied limestone, which influences lime reactivity. The effects of particle size and application schedule of magnesium limestone were investigated on extractable Ca, Mg and K in soil, their concentrations in sward plants and dry-matter yield. Magnesium limestone of various particle sizes was applied to experimental plots at a rate of 3 t ha-1, a grass-clover sward was sown, and the plots were monitored during three years. The finest limestone (< 0.25 mm) in a single application yielded the highest soil Ca and Mg concentrations extracted by Mehlich-3 and NH4Cl. The same limestone split in three annual doses was less effective. Plots treated with the coarsest limestone (2-4 mm) did not differ from control plots. Liming had no effect on potassium, either in soil or plants. Soil concentrations of Ca, Mg and K extracted by Mehlich-3 and NH4Cl were correlated with each other (r = 0.76, 0.75 and 0.67, respectively). NH4Cl extracted more Ca than Mehlich-3, while the latter extracted more Mg and K than NH4Cl. Soil Ca, Mg and K extracted by NH4Cl were also correlated to water extractions. Mg concentration in plants correlated to soil Mg extracted by NH4Cl or by water. Neither the concentrations nor the total contents of Ca and K in plants correlated with extractable soil Ca and K. The total dry matter yield was not affected by liming. The yield of sown species was higher in plots treated with the finest limestone than in plots limed with the coarsest limestone. Cations extracted by water or NH4Cl explained the variance of dry matter yield.

scholarly journals Gliricidia leaves decomposition: The effect of particle size on microbial respiration

1970 ◽  
Vol 34 (3) ◽  
pp. 343-350 ◽  
Author(s):  
BC Walpola ◽  
KKIU Aruna Kumara ◽  
AP Senanayake ◽  
SD Wanniarachchi
Keyword(s):  
Particle Size ◽  
Key Words ◽  
Green Manure ◽  
N Mineralization ◽  
Crop Production ◽  
Microbial Respiration ◽  
Legume Crop ◽  
Key Words Decomposition ◽  
Potential Alternative ◽  
Effect Of Particle Size

Legume leaves used as green manure are a potential alternative to commercial fertilizers for non-legume crop production. Therefore, many researches have been conducted to understand the pattern of legume leaf decomposition and its release of nutrients. A study on Gliricidia leaves decomposition was conducted under laboratory conditions to elucidate the effect of grinding size of Gliricidia leaves (S1 = ≤ 0.5 mm, S2 = 4 mm, and S3 = 9 mm) on microbial respiration and N mineralization after incorporation in to the soil. The early stages of the incubation were found to be significantly influenced by the particle size of the Gliricidia leaves. Particle size S2 (4 mm) was reported to exhibit the highest C and NH4+-N mineralization. However, in the case of NO3+-N mineralization, no treatment was found to be significant. It could thus be hypothesized that physical protection of finely ground (< 0.5 mm) Gliricidia leaves was responsible for the relatively low rates of decomposition. Key Words: Decomposition, mineralization, Gliricidia leaves. DOI:  10.3329/bjar.v34i3.3957 Bangladesh J. Agril. Res. 34(3) : 343-350, September 2009

Effect of particle size on erosion measurements and predictions in annular flow for an elbow

Wear ◽  
2020 ◽  
pp. 203579
Author(s):  
G. Haider ◽  
M. Othayq ◽  
J. Zhang ◽  
R.E. Vieira ◽  
S.A. Shirazi
Keyword(s):  
Particle Size ◽  
Annular Flow ◽  
Effect Of Particle Size

The Effect of Particle Size and Phospholipid on Growth and Fat Utilization of the Baby Pig

1951 ◽  
Vol 10 (4) ◽  
pp. 867-874 ◽  
Author(s):  
B. E. Sheffy ◽  
Carlos Acevedo Gallegos ◽  
R. H. Grummer ◽  
P. H. Phillips ◽  
G. Bohstedt
Keyword(s):  
Particle Size ◽  
Fat Utilization ◽  
Effect Of Particle Size
Sign in / Sign up

Export Citation Format

Share Document