Western Regional Cool Season Food Legume Evaluation

Principal Investigators: John H. Miller, Research Scientist, Gadi V.P. Reddy, Professor of Entomology/Ecology, Western Triangle Ag Research Center

Project Coordinators: Western Regional pulse: George Vandemark and Rebecca McGee, USDA/ARS, Pullman, WA.

Project Personnel: Julie Prewett, Research Assistant, and Alysha Miller, Research Assistant, WTARC, Conrad, MT.

Objectives: To this end the objective is to evaluate spring pulse varieties under the local conditions with respect to yield, test weight, plant height, one thousand kernel weight and seed protein. The research center strives to provide growers of the western triangle area unbiased information of various spring pulse varieties.

Methods: Western Regional spring pulse variety trials were seeded for the 2018 growing season. The Western Regional pea trial had eight entries replicated three times. Western Regional lentil nursery had 7 entries replicated three times and the Western Regional chickpea had six entries replicated three times. All pulse nurseries were seeded with a four row plot seeder on one foot spacing. All plots were planted on no-till chemical fallow. Plots were trimmed, measured for length, and then harvested with a Hege 140.

Results: Pulse variety data are summarized in Tables 1 thru 3, with Table 4 having soil test data. Table 1 is pea data, with Table 2 representing lentil data. Table 3 is the summarization of chickpea data.

Overall, the crop year temperatures where cooler than 32 year average at the research center, May, when we could have used some cooler temperatures, was 5.2 degrees warmer than the average. But the overall average temperature for the year from September to August was 3.8 degrees cooler than the 32 year average. The winter temperature, from September to March was well below average, with February being 15.5 degrees colder than the 32 year average. March and April were 9.6 and 7.1 degrees colder than the 32 year average. May was the only month that had a temperature that was above the average with a temperature 5.2 degrees. September through March were at or above the average precipitation for those months. Then May through August were drier than the 32 year average. Overall, precipitation was average for the year with respect to the 32 year average.

The chemical fallowed soils generally had good moisture while seeding spring pulses during the spring of 2018. Overall, considering the lack of moisture and heat this past summer, the pulse crops did quite well.

Western Regional (WR) pea date are summarized in Table 1. Hampton a green pea and DS Admiral a yellow pea are in the WR trial as checks. The WR nursery is made up of experimental varieties. The pea trial had a mean of 1653.9 lb/ac. Yields ranged from 1010.7 lb/ac for PS1410007to 2056.3 lb/ac for PS0810100.

Western Regional lentil data are presented in Table 2. Avondale a medium green lentil and Pardina a small brown lentil are included in the WR nursery as checks. The WR nursery is made up of experimental varieties. The lentil trial had a mean of 1663.2 lb/ac. Yields ranged from 1287.4 lb/ac for Avondale to 2099.9 lb/ac for Pardina.

Western Regional chickpea data are presented in Table 3. The WR nursery is made up of experimental varieties. The WR chickpea trial had a mean of 1782.0 lb/ac. Yields ranged from 1305.8 lb/ac for CA0790B05 to 2214.7 lb/ac for CA1390015.

Summary: A similar project will be proposed for FY 2018.

These data should be used for comparative purposes rather than using absolute numbers. Statistics are used to indicate that treatment or variety differences are really different and are not different due to chance or error. The Least Significant Difference (LSD) and Coefficient of Variability (CV) values are useful in comparing treatment or variety differences. The LSD value represents the smallest difference between two treatments at a given probability level. The LSD at p=0.05 or 5 % probability level is usually the statistic reported, and it means that the odds are 19 to 1 that treatment differences by the amount of the LSD are truly different. The CV value measures the variability of the experiment or variety trial, and a CV greater than 15 % indicates a high degree of variability and less accuracy.

Funded by the US Dry Pea and Lentil council.

Table 1. Western Regional Pea Variety Evaluation. Western Triangle Ag. Research Center.

2018.

Seeding Date: 05/08/2018 Harvest Date: 08/13/2018

Fertilizer (actual): 11-22.5-0 was applied with the seed with 0-0-20 being broadcast while planting.

Precipitation: 4.15 inches

Herbicide: Pre-plant sprayed with Roundup RT3 at 40oz/ac on 05/03/2018. Conducted by Western Triangle Ag. Research Center, Conrad, MT.

Table 2. Western Regional Lentil Variety Evaluation. Western Triangle Ag. Research Center.

2018.

Seeding Date: 05/08/2018 Harvest Date: 08/14/2018

Fertilizer (actual): 11-22.5-0 was applied with the seed with 0-0-20 being broadcast while planting.

Precipitation: 4.15 inches

Herbicide: Pre-plant sprayed with Roundup RT3 at 40oz/ac on 05/03/2018. Conducted by Western Triangle Ag. Research Center, Conrad, MT.

Table 3. Western Regional Chickpea Variety Evaluation. Western Triangle Ag. Research Center.

2018.

Seeding Date: 05/08/2018 Harvest Date: 09/7/2018

Fertilizer (actual): 11-22.5-0 was applied with the seed with 0-0-20 being broadcast while planting.

Precipitation: 5.19 inches

Herbicide: Pre-plant sprayed with Roundup RT3 at 40 oz/ac on 05/03/2018. Conducted by Western Triangle Ag. Research Center, Conrad, MT.

Table 4. Soil test values for off-station and on-station plots, 2018.

1Nitrogen soil samples were to a depth of four feet in one foot increments. All other soil tests were for zero to six inches in depth.

WTARC- Western Triangle Ag. Research Center