scholarly journals Lack of Response of Some Food Crops to the Application of Synthetic Soil Conditioners to A Clay Soil in Lajas Valley

1969 ◽  
Vol 41 (3) ◽  
pp. 167-172
Author(s):  
M. A. Lugo-López ◽  
J. A. Bonnet ◽  
M. Rico-Ballester ◽  
G. Acevedo
Keyword(s):  
Field Experiment ◽  
Physical Properties ◽  
Clay Soil ◽  
Water Movement ◽  
Soil Aggregates ◽  
Soil Physical Properties ◽  
Food Crops ◽  
Dry Powder ◽  
Soil Conditioners ◽  
The Stability

Data are presented here from a field experiment where Krilium 6 and 9, Aerotil, and Goodrite (dry powder of the first three and flakes of the fourth) were applied to the uppermost 6 inches of a Santa Isabel clay soil at the Lajas Valley, each at rates of 900, 1,800, and 3,600 pounds to the acre. Three crops: Tomatoes, white beans, and sweetpotatoes, were grown in the sequence following the establishment of the treatment differentials. None of the crops showed any response to the soil-conditioning chemicals. The stability of the soil aggregates of Santa Isabel clay, which is naturally high, was not affected by the treatment. The data presented show also that the water movement and retention and other soil physical properties remain unaffected by treatment. The lack of response is discussed and compared with other problem soils where crop responses have been measured.

scholarly journals Soil physical properties and yield of soybean and corn grown with wastewater

2018 ◽  
Vol 22 (12) ◽  
pp. 843-848
Author(s):  
Alexsandro C. dos S. Almeida ◽  
Higor H. O. Santos ◽  
Dhiego P. Bortolo ◽  
Elaine R. P. Lourente ◽  
Jorge W. Cortez ◽  
...  
Keyword(s):  
Field Experiment ◽  
Physical Properties ◽  
Soil Physical Properties ◽  
Significant Alteration ◽  
Swine Wastewater ◽  
Chemical Fertilizers ◽  
Evaluation Period ◽  
Chemical Fertilization ◽  
Physical Attributes ◽  
Red Latosol

ABSTRACT This study aimed to evaluate soybean and corn yields and soil physical attributes of a Dystrophic Red Latosol fertilized with swine wastewater (SW). Therefore, a field experiment was conducted in randomized blocks to evaluate five treatments of fertilization in the 2014/2015 season (soybean in the summer and corn in the second season). The treatments were: T1 - control (fertilized exclusively with chemical fertilizers); T2 - fertilized with 1270 m3 ha-1 of SW; T3 - fertilized with 170 m3 ha-1 of SW; T4 - fertilized with 50 m3 ha-1 of SW; and T5 - fertilized with 50 m3 ha-1 of SW + chemical fertilization. Soil samplings and soil physical analyses were performed before soybean cultivation and after corn harvest. No significant alteration was observed in soil physical attributes during the evaluation period. The application of swine wastewater in the fertilization of soybean and corn, cultivated in Dystrophic Red Latosol with high clay contents, positively affected these crops, since it led to good yields in soybean (with an average of 2990.85 kg ha-1) and increased corn yields (with a maximum of 7126.5 kg ha-1). In addition, soil physical properties were not altered.

scholarly journals Miscanthus Biochar had Limited Effects on Soil Physical Properties, Microbial Biomass, and Grain Yield in a Four-Year Field Experiment in Norway

Agriculture ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 171 ◽  
Author(s):  
Adam O’Toole ◽  
Christophe Moni ◽  
Simon Weldon ◽  
Anne Schols ◽  
Monique Carnol ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Field Experiment ◽  
Physical Properties ◽  
Soil Microbial Biomass ◽  
Soil Physical Properties ◽  
Climate Mitigation ◽  
Silty Clay ◽  
Organic C ◽  
Soil Microbial ◽  
The Impact

The application of biochar to soils is a promising technique for increasing soil organic C and offsetting GHG emissions. However, large-scale adoption by farmers will likely require the proof of its utility to improve plant growth and soil quality. In this context, we conducted a four-year field experiment between October 2010 to October 2014 on a fertile silty clay loam Albeluvisol in Norway to assess the impact of biochar on soil physical properties, soil microbial biomass, and oat and barley yield. The following treatments were included: Control (soil), miscanthus biochar 8 t C ha−1 (BC8), miscanthus straw feedstock 8 t C ha−1 (MC8), and miscanthus biochar 25 t C ha−1 (BC25). Average volumetric water content at field capacity was significantly higher in BC25 when compared to the control due to changes in BD and total porosity. The biochar amendment had no effect on soil aggregate (2–6 mm) stability, pore size distribution, penetration resistance, soil microbial biomass C and N, and basal respiration. Biochar did not alter crop yields of oat and barley during the four growing seasons. In order to realize biochar’s climate mitigation potential, we suggest future research and development efforts should focus on improving the agronomic utility of biochar in engineered fertilizer and soil amendment products.

The Effect of Synthetic Soil Conditioners on Soil-Aggregate Stability and the Production of Potatoes and Stringless Beans

1969 ◽  
Vol 41 (2) ◽  
pp. 127-133
Author(s):  
R. Pérez-Escolar ◽  
M. A. Lugo-López
Keyword(s):  
Soil Aggregates ◽  
Aggregate Stability ◽  
Soil Aggregate ◽  
Soil Characteristics ◽  
Intermediate Level ◽  
Minimum Level ◽  
Soil Aggregate Stability ◽  
Soil Conditioners ◽  
Low Levels ◽  
The Stability

Data are presented here on the effect of the synthetic soil conditioners Krilium (formulations 6 and 9) and Aerotil on the aggregate stability of Juncos clay and on the yield of potatoes and string beans. The conditioners used were formulations 6 and 9 of Krilium, dry form, and Aerotil, wettable flakes, each at rates of 900, 1,800, and 3,600 pounds to the acre. At all levels Krilium 6 showed the highest aggregate-stabilizing capacity. Significant and highly significant differences were obtained between the stability of soil aggregates in the check plots and in all conditioner-treated plots, except where Krilium 9 was used at the minimum level. The production of potatoes of the Kennebeck variety was significantly increased by conditioner treatment, except at the low levels of both Krilium formulations and the intermediate level of formulation 6. Stringless beans did not respond to the increased stability of soil aggregates, which stresses the importance of recognizing crop differences in assessing soil characteristics.

Yield variation of spring cereals in relation to selected soil physical properties on three clay soil fields

2013 ◽  
Vol 49 ◽  
pp. 1-11 ◽  
Author(s):  
Mikko Hakojärvi ◽  
Mikko Hautala ◽  
Antti Ristolainen ◽  
Laura Alakukku
Keyword(s):  
Physical Properties ◽  
Clay Soil ◽  
Soil Physical Properties ◽  
Yield Variation ◽  
Spring Cereals
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