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Beneficial Plant-Microbe Interactions To Improve Nutrient Uptake And Biotic Stress Response In Crops, Jaya Krishna Yakha
Beneficial Plant-Microbe Interactions To Improve Nutrient Uptake And Biotic Stress Response In Crops, Jaya Krishna Yakha
Electronic Theses and Dissertations
Mutualism is a very common phenomenon among living organisms on earth. Legumes because of their high protein content, serve as a great nutrient resource for animals. This group of plants can form a mutualistic symbiosis with beneficial microbes. For example, Alfalfa (Medicago) and soybean (Glycine max) can get colonized with arbuscular mycorrhizal fungi (AMF) and rhizobia bacteria simultaneously forming a complex tripartite interaction for nutrient benefits. Most of the previous research evaluated individual symbionts, either rhizobia bacteria or AMF, but not both. There are only a few reports which discuss the nutrient exchange mechanisms in a tripartite interaction. Thus, there …
The Endophytes Of Pediomelum Esculentum: A Unique Case In Legume Evolution, Tyrel Ryan Deutscher
The Endophytes Of Pediomelum Esculentum: A Unique Case In Legume Evolution, Tyrel Ryan Deutscher
Electronic Theses and Dissertations
Pediomelum esculentum (commonly prairie turnip) is a perennial legume of the Great Plains, consisting of a deep taproot and large edible tuber, and has served as a nutritious staple in Native American diets. The tuber is capable of storing up to 20 percent protein by weight. P. esculentum is a legume, but not a prominent nodule former; instead, it grows in nitrogen-limited soils and produces large amounts of protein. This suggests the involvement of biological nitrogen fixation. We have investigated the presence of diazotrophic endophytes in P. esculentum. Bacteria were isolated from wild plants on nitrogen free media, identified …
Seedling Root Morphology Of Six Alfalfa Populations, Brianna J. Gaughan
Seedling Root Morphology Of Six Alfalfa Populations, Brianna J. Gaughan
The Journal of Undergraduate Research
Seedling root morphology plays a crucial role in seedling survival and stand establishment. Naturalized yellow-flowered alfalfa (YFA) (Medicago sativa subsp. falcata) has demonstrated adaptation to semiarid conditions of the Northern Great Plains and tolerance to grazing. Seedling stage root morphology is poorly defined. Our objective was to compare morphological traits of seedling roots for six alfalfa populations. Six entries were evaluated: one M. sativa population as a control, two M. falcata entries, with reported “spreading characteristics” and three naturalized YFA populations. Uniform seeds of each entry were scarified with 320 grade sand paper and inoculated with rhizobium before planting. A …
Shoot Morphology Of Eleven Alfalfa Populations, Jessica A. Schmuck
Shoot Morphology Of Eleven Alfalfa Populations, Jessica A. Schmuck
The Journal of Undergraduate Research
Alfalfa (Medicago sativa L.) is a major component of feed for dairy and beef cattle and one of the most productive forage species in North America. Alfalfa has been planted on millions of acres. More than 100 varieties have been developed in North America over the past 100 years. However, historically, alfalfa persistence under grazing in semiarid rangeland has generally been poor. Recently, it was discovered that naturally-selected populations of predominantly yellow-flowered alfalfa have been proven to be adapted to rangelands of western South Dakota and adjacent areas. A study was initiated in May 2006 to evaluate persistence and vigor …
Effects Of Stratification, Warm Treatment, And Mechanical And Acid Scarification On The Emergence Of Yellow-Flowered Alfalfa (Medicago Sativa Subsp. Falcata) Seeds, Diane Narem
The Journal of Undergraduate Research
Yellow-flowered alfalfa (YFA) has great potential to improve rangelands in the Northern Plains. Greater than 99% of YFA seeds from soil were viable but less than 4% germinated under standard laboratory conditions. The objective was to determine if low germination was due to physical or physiological seed dormancy. The experiment utilized a random complete block design with two trials, eight replications per trial. Each replication consisted of ten treatments plus a control, four stratification treatments consisting of a combination of two temperatures (-5°C, -20°C) and two durations (48 hr, 72 hr), one warm treatment (4 min, 60°C), four sandpaper scarification …
Sod Suppression Techniques For Legume Interseeding, Alexander J. Smart, Vance N. Owens, Dick Pruitt
Sod Suppression Techniques For Legume Interseeding, Alexander J. Smart, Vance N. Owens, Dick Pruitt
South Dakota Beef Report, 2005
Sod suppression is necessary for successful establishment of legumes interseeded into existing pasture; however such techniques vary in their effectiveness, cost, and management. Sod suppression experiments for legume interseeding into cool-season pasture were conducted at South Dakota State University’s Cow-Calf Unit located near Brookings, SD in 2003 to 2005. We evaluated (i) spring burn, (ii) field cultivator or disk, (iii) herbicide, (iv) heavy fall and spring graze, and (v) a control with no sod suppression. Legume species were alfalfa, birdsfoot trefoil, and kura clover. Sod suppression techniques enhanced the success of legume interseeding. In this study, the grazing equaled or …
Forage Potential Of Cicer Milkvetch, Edward K. Twidwell, Kevin D. Kephart
Forage Potential Of Cicer Milkvetch, Edward K. Twidwell, Kevin D. Kephart
SDSU Extension Extra Archives
Cicer milkvetch (Astragalus cicer L), a legume native from the Causcasus Mountains in Asia across southern Europe to Spain, was introduced into the United States in the 1920’s. It’s used for grazing, hay, and soil conservation in the northern and central Rocky Mountain Region of the United States and western Canada. Cicer milkvetch is gaining popularity in other regions of the United States because it is more tolerant than alfalfa to acidic or alkaline soils and does not cause bloat in grazing animals. Several South Dakota producers planted small acreages of cicer milkvetch in spring 1989. These acreages are being …
Alfalfa As A Field Crop In South Dakota, A.N. Hume, S. Garver
Alfalfa As A Field Crop In South Dakota, A.N. Hume, S. Garver
Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011)
Summary of Bulletin No. 133
(1) Average yields of alfalfa hay, from several strains of seed have been produced at Brookings, which have been more profitable than average crops of wheat or corn. Such a fact augurs well for permanent, profitable farming in South Dakota. Page 260.
(2) Average yields of alfalfa hay from some strains of seed have been produced at Highmore, which were at least as profitable as average crops of wheat or corn. Such .a fact augurs also well for permanent, profitable farming in South Dakota. It is also exceedingly important to know that some strains failed …