Performance Assessment of Soil Moisture Meter under Sandy Clay Loam Soil

Agricultural Reviews ◽

10.18805/ag.r-2286 ◽

2022 ◽

Author(s):

K. Balaji ◽

T. Pandiarajan

Keyword(s):

Soil Moisture ◽

Water System ◽

Clay Loam ◽

Clay Loam Soil ◽

Sandy Clay Loam ◽

Sandy Clay ◽

Proposed Model ◽

Moisture Meter ◽

Moisture Percentage ◽

Loam Soil

Background: Irrigation performs a substantial function for the growth of Agricultural vegetation. Soil supplies essential nutrients for the growth of plant and provides anchor support to the roots of the crops. Soil Moisture permits the requirement for water system to be measured ahead of a yield giving indications of misery. Knowing the soil moisture status empowers exceptionally productive water system, giving the water as and when required and wiping out the inefficient utilization of water when water system isn’t required. Methods: Sandy clay loam soil contains a decent arrangement of plant supplements and supports most sorts of plants and yields. So in the field plentiful accessibility of this soil its texture is discovered by estimating soil moisture. Result: Within the research we developed a soil moisture meter based on capacitive type sensor the output is analog voltage which is calibrated to soil moisture percentage and its performance is comparatively investigated with different moisture sensor under sandy clay loam soil. The proposed model is highly emphasized on the soil moisture percentage that is the level of water content in the soil. The percentage value is displayed in the LCD. The deployment cost is highly reduced in the proposed model.

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Modeling phosphorus distribution under different fertigation strategies in onion (Allium cepa L.) crop

Journal of Applied and Natural Science ◽

10.31018/jans.v9i2.1264 ◽

2017 ◽

Vol 9 (2) ◽

pp. 720-729

Author(s):

Sanjay T. Satpute ◽

Man Singh

Keyword(s):

Soil Moisture ◽

Nutrient Dynamics ◽

Moisture Distribution ◽

Clay Loam ◽

Clay Loam Soil ◽

Nutrient Distribution ◽

Sandy Clay Loam ◽

Phosphorus Distribution ◽

Sandy Clay ◽

Loam Soil

The understanding of soil and nutrient dynamics under drip fertigation is relevant for crop production as well as water and nutrient management. The aim of this study was to generate information about the distribution of phosphorus (P) under different fertigation strategies for onion production on sandy clay loam soil during 2007-2008 to 2008-2009. The study involved field experiment, laboratory analysis and modeling of P distribution. The phosphorus distribution data in the field were collected, analyzed and used to calibrate and validate the solute transport model HYDRUS-2D for sandy clay loam soil. The performance of HYDRUS-2D was evaluated by comparing its simulated values with the observed values of soil moisture and nutrient concentration. The coefficient of determination (R2), root mean square error (RMSE) and mean absolute error (MAE) were used as model performance indicators. The range of R2 between 0.72-0.99 for water as well as nutrient distribution indicates good correlation between the observed and simulated values. The MAE and RMSE values for water and nutrient distribution were in between 0.0009 to 0.0039 which indicated the accuracy of the model. From these results, it can be concluded that the model is performing well for predicting the P concentration in the soil as well as the soil moisture distribution for onion crop grown under sandy clay loam. The model was also validated for water and phosphorus distribution with the observed values at the end of the crop season and found to be performing well. The HYDRUS-2D model may be used to carry out simulations for different soil types and with different fertigation and irrigation strategies for developing guidelines.

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