aridagri

Comprehensive Statistical Tools for Agricultural Research

aridagri is a comprehensive R package providing 35+ functions for statistical analysis in agricultural research, with special focus on experimental design analysis and agronomic calculations.

Key Features

🔬 Complete ANOVA Suite: All experimental designs with proper error terms
📊 Multiple Post-Hoc Tests: LSD, Duncan, Tukey, SNK, Scheffé, Bonferroni, Dunnett
📈 Stability Analysis: 7 methods (Eberhart-Russell, AMMI, Finlay-Wilkinson, Shukla, Wricke, CV, Superiority)
🌡️ Thermal Indices: GDD, HTU, PTU, Heat Use Efficiency
🌱 Crop Growth Analysis: CGR, RGR, NAR, LAI
📋 Publication-Ready Output: Formatted tables with SE, CD, CV

Installation

# Install devtools if needed
install.packages("devtools")

# Install aridagri from GitHub
devtools::install_github("lalitrolaniya/aridagri")

Function Overview

Experimental Design ANOVA (17 Functions)

Function	Design
`anova_crd()`	Completely Randomized Design
`anova_rbd()`	Randomized Block Design
`anova_rbd_pooled()`	Pooled RBD (Multi-Environment)
`anova_latin()`	Latin Square Design
`anova_factorial()`	Two-Factor Factorial
`anova_factorial_3way()`	Three-Factor Factorial
`anova_spd()`	Split Plot Design
`anova_spd_ab_main()`	SPD with (A×B) in Main Plot
`anova_spd_c_main_ab_sub()`	SPD with C Main, (A×B) Sub
`anova_spd_ab_cd()`	SPD with (A×B) Main, (C×D) Sub
`anova_spd_pooled()`	Pooled Split Plot Design
`anova_sspd()`	Split-Split Plot Design
`anova_sspd_pooled()`	Pooled SSPD
`anova_strip()`	Strip Plot Design
`anova_augmented()`	Augmented Block Design
`anova_alpha_lattice()`	Alpha Lattice Design

Post-Hoc Tests (8 Methods)

All available via perform_posthoc(): - Fisher’s LSD - Duncan’s Multiple Range Test (DMRT) - Tukey’s HSD - Student-Newman-Keuls (SNK) - Scheffé’s Test - Bonferroni Correction - Dunnett’s Test (vs Control)

Agronomic Analysis (6 Functions)

Function	Analysis
`stability_analysis()`	7-method stability analysis
`thermal_indices()`	GDD, HTU, PTU, HUE
`crop_growth_analysis()`	CGR, RGR, NAR, LAI
`harvest_index()`	HI and partitioning
`yield_gap_analysis()`	Yield gap calculations
`economic_indices()`	B:C ratio, net returns

Statistical Analysis (4 Functions)

Function	Analysis
`correlation_analysis()`	Correlation matrix with significance
`pca_analysis()`	Principal Component Analysis
`path_analysis()`	Path coefficients
`sem_analysis()`	Structural Equation Modeling

Nutrient Analysis (3 Functions)

Function	Analysis
`nue_calculate()`	Nutrient Use Efficiency indices
`nutrient_response()`	Response curve analysis
`economic_analysis()`	Economic optimum

Quick Examples

Split-Split Plot Design ANOVA

library(aridagri)

data <- expand.grid(
  rep = 1:3,
  irrigation = c("I1", "I2", "I3"),
  variety = c("V1", "V2"),
  nitrogen = c("N0", "N40", "N80")
)
data$yield <- rnorm(nrow(data), 1200, 150)

result <- anova_sspd(data, 
                     response = "yield",
                     main_plot = "irrigation",
                     sub_plot = "variety",
                     sub_sub_plot = "nitrogen",
                     replication = "rep")

Stability Analysis (7 Methods)

data <- expand.grid(
  variety = paste0("V", 1:10),
  location = paste0("L", 1:5),
  rep = 1:3
)
data$yield <- rnorm(nrow(data), 1200, 200)

stability_analysis(data, 
                   genotype = "variety",
                   environment = "location",
                   replication = "rep",
                   trait = "yield",
                   method = "all")

Unique Features

First R package with ALL split plot design variations
Complete SE/CD calculations for every comparison type
7 stability analysis methods in single function
Integrated thermal indices (GDD, HTU, PTU, HUE)
Crop growth analysis (CGR, RGR, NAR, LAI)
Publication-ready formatted output

Citation

Rolaniya, L.K., Jat, R.L., Punia, M., and Choudhary, R.R. (2026). aridagri: 
Comprehensive Statistical Tools for Agricultural Research. 
R package version 2.0.3. https://github.com/lalitrolaniya/aridagri

Authors

Lalit Kumar Rolaniya (Maintainer) Scientist (Agronomy) ICAR-Indian Institute of Pulses Research, Regional Centre, Bikaner, Rajasthan-334006, India ORCID: 0000-0001-8908-1211

Ram Lal Jat Senior Scientist (Agronomy) ICAR-Indian Institute of Pulses Research, Regional Centre, Bikaner, Rajasthan-334006, India ORCID: 0009-0003-4339-0555

Monika Punia Scientist (Genetics & Plant Breeding) ICAR-Indian Institute of Pulses Research, Regional Centre, Bikaner, Rajasthan-334006, India ORCID: 0009-0002-0294-6767

Raja Ram Choudhary Scientist (Agronomy) ICAR-Indian Institute of Groundnut Research, Regional Research Station, Bikaner, Rajasthan-334006, India

Acknowledgments

The authors gratefully acknowledge ICAR-Indian Institute of Pulses Research, Kanpur for providing necessary support and infrastructure for the development of this package.

License

GPL-3

Contributing

Contributions are welcome! Please feel free to submit issues or pull requests.