Critical Levels of Selenium in Different Crops Grown in an Alkaline Silty Loam Soil Treated with Selenite-Se

2005 ◽  
Vol 277 (1-2) ◽  
pp. 367-374 ◽  
Author(s):  
N. Rani ◽  
K. S. Dhillon ◽  
S. K. Dhillon
Keyword(s):  
Critical Levels ◽  
Silty Loam ◽  
Loam Soil

Hydrodynamic Dispersion Coefficient of Urea in Silty Loam Soil

2019 ◽  
Vol 6 (04) ◽  
Author(s):  
RAM PAL ◽  
H C SHARMA ◽  
M IMTIYAZ
Keyword(s):  
Transport Phenomenon ◽  
Porous Medium ◽  
Contaminant Transport ◽  
Dispersion Coefficient ◽  
Hydrodynamic Dispersion ◽  
Soil Columns ◽  
Soil Medium ◽  
Adverse Health Effects ◽  
Silty Loam ◽  
Loam Soil

The modern theme of agriculture is not only to increase production but also to minimize undesirable environmental effects. Leaching of surface-applied fertilizer is the major source of groundwater pollution. Nitrogenous fertilizers are the most popular among the Indian farmers, which on leaching reach the groundwater in different forms (NH4-N, NO3-N, etc). NO3-N leaches faster than other types, remains in-reactive in groundwater, moves with the velocity of groundwater and contaminates it. Contamination arises when NO3-N accumulates in groundwater and consumed in high amount by humans and animals, may result in adverse health effects. For the study of contaminant transport phenomenon in porous medium, a general convection dispersion equation is used, in which dispersion coefficient is one of the primary parameters necessary to be determined for a particular soil. Keeping it in view a study was conducted to assess different available techniques to determine the dispersion coefficient with the help of soil columns having silty loam soil as soil medium. The value of the dispersion coefficient obtained for silty loam soil, by this method was equal to 0.00576 m2.

scholarly journals Aggregate stability and associated C and N in a silty loam soil as affected by organic material inputs

2015 ◽  
Vol 14 (4) ◽  
pp. 774-787 ◽  
Author(s):  
Pan LONG ◽  
Peng SUI ◽  
Wang-sheng GAO ◽  
Bin-bin WANG ◽  
Jian-xiong HUANG ◽  
...  
Keyword(s):  
Organic Material ◽  
Aggregate Stability ◽  
Silty Loam ◽  
Loam Soil ◽  
C And N

scholarly journals A short-term comparison of organic v. conventional agriculture in a silty loam soil using two organic amendments

2008 ◽  
Vol 146 (6) ◽  
pp. 677-687 ◽  
Author(s):  
J. F. HERENCIA ◽  
J. C. RUIZ ◽  
S. MELERO ◽  
P. A. GARCIA GALAVÍS ◽  
C. MAQUEDA
Keyword(s):  
Organic Farming ◽  
Crop Yields ◽  
Organic Amendments ◽  
Chemical Properties ◽  
Soil Nutrient ◽  
Short Term ◽  
Organic System ◽  
Conventional Agriculture ◽  
Silty Loam ◽  
Loam Soil

SUMMARYThe transition from conventional to organic farming is accompanied by changes in soil chemical properties and processes that could affect soil fertility. The organic system is very complex and the present work carries out a short-term comparison of the effects of organic and conventional agriculture on the chemical properties of a silty loam soil (Xerofluvent) located in the Guadalquivir River Valley, Seville, Spain, through a succession of five crop cycles over a 3-year period. Crop rotation and varieties were compared in a conventional system using inorganic fertilizer and two organic systems using either plant compost or manure. At the end of the study, organic farming management resulted in higher soil organic carbon (OC), N and available P, K, Fe and Zn. The available Mn and especially Cu values did not show significant differences. In general, treatment with manure resulted in more rapid increases in soil nutrient values than did plant compost, which had an effect on several crop cycles later. The present study demonstrated that the use of organic composts results in an increase in OC and the storage of nutrients, which can provide long-term fertility benefits. Nevertheless, at least 2–3 years of organic management are necessary, depending on compost characteristics, to observe significant differences. Average crop yields were 23% lower in organic crops. Nevertheless, only two crops showed statistically significant differences.

Assessment of implement efficiency and soil structure under different conventional tillage implements and soil moisture contents in a silty loam soil

CATENA ◽  
2017 ◽  
Vol 158 ◽  
pp. 413-420 ◽  
Author(s):  
A.A. Tagar ◽  
M.A. Gujjar ◽  
Jan Adamowski ◽  
N. Leghari ◽  
A. Soomro
Keyword(s):  
Soil Moisture ◽  
Soil Structure ◽  
Conventional Tillage ◽  
Moisture Contents ◽  
Silty Loam ◽  
Loam Soil

Time series outlier and intervention analysis: Irrigation management influences on soil water content in silty loam soil

2012 ◽  
Vol 111 ◽  
pp. 105-114 ◽  
Author(s):  
Basem Aljoumani ◽  
Jose A. Sànchez-Espigares ◽  
Nuria Cañameras ◽  
Ramon Josa ◽  
Joaquim Monserrat
Keyword(s):  
Time Series ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Irrigation Management ◽  
Intervention Analysis ◽  
Silty Loam ◽  
Loam Soil

Stone cover and rain intensity - Effects on infiltration, erosion and water splash

Soil Research ◽  
1991 ◽  
Vol 29 (4) ◽  
pp. 565 ◽  
Author(s):  
M Agassi ◽  
GJ Levy
Keyword(s):  
Bare Soil ◽  
Lower Percentage ◽  
Moderate Increase ◽  
Rain Intensity ◽  
Stone Size ◽  
Asbestos Cement ◽  
Water Splash ◽  
Silty Loam ◽  
Loam Soil ◽  
Reduced Water

The effects of level of stone cover, stone size and rain intensity on infiltration, erosion and water splash from a silty loam soil (Calcic Haploxeralf) were studied using a laboratory rainfall simulator. Square asbestos cement plates (5 mm thick), measuring 100 and 2500 mm2, were used to simulate stones. Three levels of surface cover (0, 25 and 50% cover) and two rain intensities (21 and 45 mm h-1) were studied. An increase in the level of stone cover increased infiltration and reduced erosion. The size of the asbestos cement plates had no effect on either infiltration or erosion. An increase in rainfall intensity resulted in a moderate increase in infiltration and a significant increase in soil erosion. Water splash from bare soil (control) reached 15.9% of the applied rain, thereby signifying its importance in simulated rainfall studies. An increase in the level of stone cover reduced water splash. By mulching with small plates, a lower percentage of water splash occurred, compared with large plates and the control. Rain intensity had no effect on water splash.

scholarly journals The influence of pistachio shell biochar and barley residues on soil properties

2020 ◽  
Vol 53 (1) ◽  
pp. 21
Author(s):  
Rezvan Mashyekhi ◽  
Hojat Emami ◽  
Fateme Naghizade Asl
Keyword(s):  
Soil Properties ◽  
Water Erosion ◽  
Pistachio Shell ◽  
Water Dispersible ◽  
Available Water Content ◽  
Randomized Design ◽  
Mean Weight Diameter ◽  
Silty Loam ◽  
Loam Soil ◽  
Plant Available Water

<p>This research was conducted to evaluate the effects of biochar and barley residues on some physicochemical properties of silty loam soil and water erosion using water erosion simulator. Biochar was produced from pistachio shells under slow pyrolysis at 500°C under anaerobic condition. Biochar and barley residues were mixed to soils at three rates of 0, 0.5 and 1% (by weight), and 6.5 kg of soil was filled in trays with length, wide and height of 35 × 20 × 10 cm, respectively. The experiments were performed in 3 repetitions for 4 months as a completely randomized design. The results showed that application of 1% of biochar significantly increased P (phosphorus), K (potassium) and OC (organic carbon) of the soil in comparison with control. Also, application at both levels (0.5 and 1%) of barley residues significantly increased P, K, TN (total nitrogen), and OC. Application of biochar and barley residues significantly increased the mean weight diameter of aggregates, plant available water content, and saturated moisture content and significantly decreased water dispersible clay (p &lt; 0.05). Consequently, the amount of water erosion decreased at the rainfall intensity of 60 mm·h-1 during 20 minutes. Generally, the effect of barley residues to improve soil properties was higher than the biochar.</p>

scholarly journals EFFECT OF THE USE OF VERMICOMPOST AND RHIZOBIAL INOCULATION ON SOME SOIL CHARACTERISTICS, GROWTH AND YIELD OF MUNG BEAN Vigni radiate L.

2021 ◽  
Vol 52 (1) ◽  
pp. 163-169
Author(s):  
Alkobaisy & Mutlag
Keyword(s):  
Soil Properties ◽  
Mung Bean ◽  
Total Yield ◽  
Mineral Fertilizer ◽  
Soil Characteristics ◽  
Growth And Yield ◽  
Root Weight ◽  
Rhizobial Inoculation ◽  
Silty Loam ◽  
Loam Soil

A field experiment was conducted in silty loam soil to study the effect of vermicompost fertilizer and inoculums Rhizobium legumenosarum on growth and yield of mung bean (Vigni radiate L.), and some soil properties after planting. The experiment consists of nine treatments as follows :T1: control , T2: full recommended mineral fertilizer, T3: vermicompost 8 t.ha-1, T4: vermicompost 16 t.ha-1, T5: vermicompost 8 t.ha-1+ rhizobia, T6: vermicompost16 t.ha-1+ rhizobia, T7: vermicompost 2 t.ha-1+ ½ recommended mineral fertilizer, T8: rhizobia + ½ recommended mineral fertilizer, T9: vermicompost 8 t.ha-1 + rhizobia +½ recommended mineral fertilizer. The experiment was conducted according to RCBD design with three replications. The results were indicated that the use of vermicompost 16 t. ha-1 with the rhizobia inoculation (T6) has improved some soil properties, as this treatment reduced the pH and EC of the soil to 7.18 and 2.20 dsm-1. While CEC and O.M increased to 47.9 Cmole Kg-1 and 2.96%, respectively. Whereas, the treatment T9 was superior in most of the traits, including plant height (70.1 cm), Root weight (5.8 g plant-1) and a number of active and total root nodes (41.3 and 36.6 nodes plant -1). The treatment T9 also gave the best characteristics of the yield components, including the number of pods plant-1, weight of pods plant-1, weight 1000 seeds (g), total yield and was 51.0 pods plant-1, 92.4 g plant -1,49.8 g.plant-1, 1216.95 kg.ha-1 respectively.

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