Browsing by Author "Stougaard, Robert N."

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2008 Statewide Spring Dry Pea and Lentil Variety Evaluations
(Central Agricultural Research Center, 2008) Chen, Chengci; Neill, Karnes E.; Carlson, G. R.; Miller, John H.; Stougaard, Robert N.; Strang, L.; Westcott, M.; Knox, M.; Eckhoff, Joyce L.; Miller, Perry R.; Holmes, Jeffrey A.; Tarum, M.; Koenig, V.
This paper evaluates spring dry pea and lentil varieties for grain production potential in diverse Montana environments. Dry pea grain yields were respectable among most of the testing sites (Table 3). Havre had the greatest production, with a trial average (converted to 13% moisture) of nearly 65 bushels acre-1 (65.6 bu/acre – 3,868 lbs/acre). Moccasin had the worst yield averaging less than 17 bushels acre-1 (16.1 bu/acre - 986 lbs/acre) which is much below long-term means and is thought to be due to poor sub-soil moisture, hail damage, snow and record lows in mid-June, and an insect infestation. As expected, no single entry was the top yielding variety at every location. However, the smooth yellow line PS9910140 did top the trial yields at three locations, and was among the top cultivars in the other locations. Lentil grain yields ranged from 450 to 2300 lbs acre-1 and were respectable across the state (Table 7), with the exceptions being Conrad (450 lbs acre-1), which had a poor stand establishment and Sidney (trial abandoned), which had poor soil moisture at seeding and experienced drought-like conditions through the growing season. Differences in grain yield between the dry pea and lentil trials at Moccasin can be attributed to planting of the lentil trial in a different field, which contained better stored soil moisture. The “Richlea”-type lentil line LC01602300R showed the greatest seed production at three of the six sites, with a grain yield ranging from 9.0 (at Conrad) to over 44 bushels acre-1 (Creston), but was not significant at any location (based on LSD0.05).
Allelic Impacts of TaPHS1, TaMKK3, and Vp1B3 on Preharvest Sprouting of Northern Great Plains Winter Wheats
(2018-12) Vetch, Justin M.; Stougaard, Robert N.; Martin, John M.; Giroux, Michael J.
Preharvest sprouting (PHS) of bread wheat (Triticum aestivum L.) is a common problem that can lead to negative economic impacts arising from yield loss and undesirable end-use quality. Twenty-one winter wheats adapted to northwestern Montana were grown over two field seasons and used to assess three loci observed in previous studies to have moderate to large impacts on PHS. The main goal was to validate the usefulness of TaPHS1-3A (a Mother of Flowering Time-like gene), TaMKK3-4A (a mitogen-activated protein kinase kinase 3), and Vp1-1B (Viviparous 1) in breeding for modified dormancy before harvest, as well as to determine their potential relationships to agronomic and seed traits, specifically, falling number and Î±-amylase concentrations. Variation in PHS susceptibility across entries ranged from 0% sprout (fully dormant) to 95% sprout (fully nondormant) after 7 d of wetting. Most entries showed an intermediate level of sprouting susceptibility ranging between 10 and 50% sprouted. Alleles previously reported to impact dormancy were found for all three genes but TaPHS1 was the only locus found to be significantly associated with PHS. It is unclear whether variation caused by TaPHS1 may be masking the effects of the other loci, but it is evident that TaPHS1 could be used in a breeding program to modify the level of seed dormancy in winter wheat before harvest.
First record of Euxestonotus error (Hymenoptera: Platygastridae) in the Pacific Northwest, United States of America
(2016-10) Echegaray, Erik R.; Stougaard, Robert N.; Bohannon, B.
Euxestonotus error (Fitch) (Hymenoptera: Platygastridae) is considered part of the natural enemy complex of the wheat midge Sitodiplosis mosellana (Gehin) (Diptera: Cecidomyiidae). Although previously reported in the United States of America, there is no record for this species outside the state of New York since 1865. A survey conducted in the summer of 2015 revealed that E. error is present in northwestern Montana and is likely playing a role in the suppression of wheat midge populations.
Impacts and Limits of Irrigation Water Management on Wheat Yield and Quality
(2017-09) Torrion, Jessica A.; Stougaard, Robert N.
Greater understanding of the impacts of irrigation timing in hard red spring wheat (Triticum aestivum L.) promotes better irrigation management, which optimizes the positive and minimizes the negative impacts on yield and quality. An experiment was conducted in 2014 to 2015 at Creston, MT. Eight cultivars (subplots) were randomly assigned to six water regimes (main plots). Aside from a rainfed check, irrigation treatments were: (i) replenishment of seasonal crop evapotranspiratory water loss via 32 mm per irrigation event (100ET); (ii) only 21 mm replenishment (66ET) per event to simulate season-long deficit; and three treatments in which 100ET replacement was terminated prior to grain fill completion by scheduling final irrigation at respective stages of: (iii) med-milk (100ET. MM), (iv) early milk (100ET. EM), (v) and anthesis (100ET. FL). The latter three treatments simulated end-of-season deficit irrigation. Irrigation treatment yields were similar, except for the lower 100ET. FL yield, indicating that wheat yield response to irrigation will be optimal in this environment as long as at least one irrigation event is supplied during grain fill. The cultivar yield responses to irrigation were similar. Irrigation increased biomass but had no impact on harvest index. Grain test weight (TWT) improved with irrigation. Falling number varied by cultivar and generally decreased with irrigation, but only significantly in 100ET, 66ET, and 100ET. MM. Irrigation improved yield and TWT, particularly during the hot and dry year. Irrigation can be terminated before completion of grain fill with no impact on yield and quality. Identification of adaptive cultivars with reduced irrigation or changing weather is necessary for improved productivity and grain quality.
Montana Intrastate Winter Wheat Variety Evaluations (2009)
(Central Agricultural Research Center, 2009) Berg, Jim E.; Bruckner, Phil L.; Carlson, G. R.; Eckhoff, Joyce L.; Grey, William E.; Johnston, Jeffrey; Kushnak, Gregory D.; Kephart, Ken D.; Riveland, N. R.; Stougaard, Robert N.; Wichman, David M.
This report evaluates new and existing winter wheat cultivars and lines under various dryland growing conditions at Montana and Western North Dakota research centers. It also provides unbiased information on improved winter wheat cultivars for producers to use in the selection of cultivars best suited for their cropping environment. The 2009 Montana Intrastate Winter Wheat Nursery was established at Bozeman, Havre, Huntley, Conrad, Kalispell, Moccasin, Sidney, and Williston. The Sidney location was not harvested due to winter kill. Across locations performance means will be high-lighted in this summary. New cultivars and development lines were among the top performers for yield, test weight, protein content, and stem solidness and plant height.
Registration of ‘Dagmar’ hard red spring wheat
(2020-02) Heo, Hwa-Young; Lanning, Susan P.; Lamb, Peggy F.; Nash, Deanna L.; Wichman, David M.; Eberly, Jed O.; Carr, P.; Kephart, Ken D.; Stougaard, Robert N.; Torrion, Jessica A.; Miller, J.; Chen, Chengci; Holen, Doug L.; Blake, Nancy K.; Talbert, Luther E.
‘Dagmar’ hard red spring wheat (Triticum aestivum L.) (Reg. no. CV‐1158, PI 690450) was released by the Montana Agricultural Experiment Station because of its excellent yield potential in dryland areas of Montana, solid stems, and superior end‐use quality. Dagmar was a selection from the cross MT1133/MT1148 and was tested as experimental line MT1621. Dagmar has similar grain yield potential to ‘Vida’, the most widely grown cultivar in Montana. Stems of Dagmar are more solid than those of Vida, suggesting increased resistance to the wheat stem sawfly (Cephus cinctus Norton). Dagmar has higher grain protein and stronger gluten than Vida. Thus, Dagmar should be useful in Montana and adjoining states facing drought and wheat stem sawfly pressure.
Registration of ‘Egan’ Wheat with Resistance to Orange Wheat Blossom Midge
(2014-08) Blake, Nancy K.; Stougaard, Robert N.; Bohannon, B.; Weaver, David K.; Heo, Hwa-Young; Lamb, Peggy F.; Nash, Deanna L.; Wichman, David M.; Kephart, Ken D.; Miller, John H.; Eckhoff, Joyce L.; Grey, William E.; Reddy, Gadi V. P.; Lanning, Susan P.; Sherman, Jamie D.; Talbert, Luther E.
Egan' hard red spring wheat (Triticum aestivum L.) (Reg. No. 1102, PI 671855) was developed by the Montana Agricultural Experiment Station and released in 2014. Egan is intended for production in areas of Montana infested with the orange wheat blossom midge (OWBM) (Sitodiplosis mosellana Géhin). Egan is resistant to OWBM due to antibiosis conferred by resistance gene Sm1. Egan also contains a chromosome segment originally introgressed into wheat from T. turgidum ssp. dicoccoides containing a gene for high protein (Gpc-B1) and a gene for stripe rust (caused by Puccinia striiformis Westend. f. sp. tritici) resistance (Yr36). Egan has shown high yield potential and high grain protein in nurseries grown under OWBM pressure in the Flathead Valley of Montana. Egan is the first hard red spring wheat cultivar with resistance to OWBM developed for Montana.
Registration of 'Northern' Hard Red Winter Wheat
(2016-05) Berg, Jim E.; Lamb, Peggy F.; Miller, John H.; Wichman, David M.; Kephart, Ken D.; Stougaard, Robert N.; Pradhan, G. P.; Nash, Deanna L.; Grey, William E.; Gettel, D.; Gale, Sam; Jin, Yue; Kolmer, J. A.; Chen, X.; Bai, G.; Murray, T. D.; Bruckner, Phil L.
Northern' (Reg. No. CV-1114, PI 676026) hard red winter wheat (Triticum aestivum L.) was developed and released by the Montana Agricultural Experiment Station in 2015. Northern was derived from a composite of two crosses, MT9982//MTW0072/NW97151 and MTW0047//MTW0072/NW97151. Northern was developed using a modified bulk breeding method and selected as an F-5:7 headrow. Northern was tested under the experimental number MT0978 in Montana yield trials from 2009 to 2015. Like predominant cultivar Yellowstone, Northern is a high-yielding, winter-hardy hard red winter wheat cultivar with medium to late maturity, medium to high grain protein, and acceptable milling and baking quality. Northern was released for its excellent performance in winter wheat production environments of north-central Montana, reduced plant height, and improved grain volume weight and resistance to stem rust (caused by Puccinia graminis Pers.: Pers. f. sp. tritici Eriks. & E. Henn.) relative to Yellowstone.