Soil moisture distribution under different lateral and dripper spacing of surface drip irrigation system in clay loam soil

2015 ◽  
Vol 8 (3) ◽  
pp. 743
Author(s):  
Sanjay Singh Chouhan ◽  
M. K. Awasthi ◽  
R. K. Nema ◽  
L.D. Koshta
Keyword(s):  
Soil Moisture ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Moisture Distribution ◽  
Drip Irrigation System ◽  
Clay Loam ◽  
Clay Loam Soil ◽  
Loam Soil ◽  
Soil Moisture Distribution ◽  
Surface Drip Irrigation

scholarly journals Evaluation of Uniformity Coefficient and Soil Moisture Distribution under Drip Irrigation System

2019 ◽  
pp. 1-9
Author(s):  
A. Selvaperumal ◽  
E. Sujitha ◽  
I. Muthuchamy
Keyword(s):  
Soil Moisture ◽  
Drip Irrigation ◽  
Goodness Of Fit ◽  
Irrigation System ◽  
Block Design ◽  
Moisture Distribution ◽  
Drip Irrigation System ◽  
Uniformity Coefficient ◽  
Rate Of Increase ◽  
Soil Moisture Distribution

Drip irrigation system uniformity can preserve a higher crop yield and deplete the initial investment of cost. The experiment was conducted at precision farming development centre research farm, Tamil Nadu Agricultural University, Coimbatore, to evaluate the uniformity coefficient and soil moisture distribution under drip irrigation system. The experiment was designed under Factorial Randomized Block Design (FRBD) which included three fertigation levels 80%, 100% and 120% of Recommended Dose of fertilizers which were replicated thrice. The Coefficient of Variation (CV) was obtained as 0.0207 per cent kept at a constant pressure of 50.66 kPa, Statistical Uniformity (SU) as 97 per cent and Coefficient of Uniformity (CU) as 0.9518. As the elapsed time increased, the rate of increase of wetted zone diameter decreased. A high R2 value of 0.97 shows the goodness of fit for the horizontal movement. The mean soil moisture distribution 39.2 per cent was observed below the emitter at the depth of 10 cm immediately after irrigation.

scholarly journals Evaluation of Uniformity Coefficient and Soil Moisture Distribution under Drip Irrigation System

2019 ◽  
pp. 1-9
Author(s):  
A. Selvaperumal ◽  
E. Sujitha ◽  
I. Muthuchamy
Keyword(s):  
Soil Moisture ◽  
Drip Irrigation ◽  
Goodness Of Fit ◽  
Irrigation System ◽  
Block Design ◽  
Moisture Distribution ◽  
Drip Irrigation System ◽  
Uniformity Coefficient ◽  
Rate Of Increase ◽  
Soil Moisture Distribution

Drip irrigation system uniformity can preserve a higher crop yield and deplete the initial investment of cost. The experiment was conducted at precision farming development centre research farm, Tamil Nadu Agricultural University, Coimbatore, to evaluate the uniformity coefficient and soil moisture distribution under drip irrigation system. The experiment was designed under Factorial Randomized Block Design (FRBD) which included three fertigation levels 80%, 100% and 120% of Recommended Dose of fertilizers which were replicated thrice. The Coefficient of Variation (CV) was obtained as 0.0207 per cent kept at a constant pressure of 50.66 kPa, Statistical Uniformity (SU) as 97 per cent and Coefficient of Uniformity (CU) as 0.9518. As the elapsed time increased, the rate of increase of wetted zone diameter decreased. A high R2 value of 0.97 shows the goodness of fit for the horizontal movement. The mean soil moisture distribution 39.2 per cent was observed below the emitter at the depth of 10 cm immediately after irrigation.

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

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.

Analyzing Soil Moisture Uniformity for Surface Drip Irrigation System in Multi-layered soil

2011 ◽  
Author(s):  
Soon Goon Choi ◽  
Jin-Yong Choi ◽  
Won-Ho Nam ◽  
Eun Mi Hong ◽  
Sang-Ho Jeon
Keyword(s):  
Soil Moisture ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Layered Soil ◽  
Drip Irrigation System ◽  
Surface Drip Irrigation
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