This document is to explain details about the field experiment performed for the high-tunnel study in 2018 and 2019. The study is conducted by the author and others.1

library(tidyverse)
library(ggmap)
library(ggthemes)
library(lubridate)
library(scales)

source("0_ht_src.R")

Maps

The study location is a semi-arid high altitude (1177 m elevation above mean sea level with average PAtM of 88.2 kPa) plain with sufficient sunshine (average yearly sunshine hours are 3296.2 hrs). The coordination of the study site is 35o09’N 102o05’W.

The Google map below describes the planting plan for the experiment at the South Section of the USDA-CPRL lands. Fig. 1 * Figure credit: James Gray.
** OS/HT stands for Open Stands/High-Tunnel cultivation system each.
*** OS is interchangeable with OF throughout this document. OF represents Open Field cultivation system.

Surface Drip Irrigation (SDI) system has been installed on the plots. The following describes the water lines of the plots. Fig. 2 * Figure credit: James Gray

Detailed experimental design within a plot is provided here. Fig. 3 * Figure credit: James Gray

Timeline

The timeline of the experiment and the planned and executed activities in 2018 is brought to serve as a reference for the 2019 experiment.

An overview of experimental activities and important dates of growing plants is as follows.

  1. Dr. Paul Colaizzi and Melanie Baxter from USDA-CPRL at Bushland, Drs. Charles Rush, Qingwu Xue from Texas A&M AgriLife Research at Amarillo, James Gray, Jewel Arthur, Jared Bull, student workers from Texas A&M AgriLife Research at Bushland.↩

A work by Tony Rho

hyungmin.rho@tamu.edu


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