Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (490)
- Plant Sciences (304)
- Physical Sciences and Mathematics (195)
- Earth Sciences (171)
- Soil Science (164)
-
- Agriculture (149)
- Agronomy and Crop Sciences (97)
- Education (72)
- Curriculum and Instruction (65)
- Agricultural Science (48)
- Animal Sciences (38)
- Plant Pathology (36)
- Plant Biology (35)
- Weed Science (33)
- Entomology (32)
- Environmental Sciences (22)
- Engineering (18)
- Natural Resources Management and Policy (14)
- Social and Behavioral Sciences (14)
- Biology (13)
- Agricultural Economics (10)
- Plant Breeding and Genetics (10)
- Natural Resources and Conservation (9)
- Civil and Environmental Engineering (7)
- Hydrology (7)
- Other Environmental Sciences (7)
- Dairy Science (6)
- Forest Sciences (6)
- Horticulture (6)
- Nutrition (6)
- Institution
-
- University of Kentucky (216)
- University of Nebraska - Lincoln (164)
- Utah State University (138)
- South Dakota State University (38)
- TÜBİTAK (12)
-
- Fort Hays State University (10)
- Western University (9)
- Kansas State University Libraries (7)
- Purdue University (7)
- Brigham Young University (5)
- Erbil Polytechnic University (5)
- Clemson University (4)
- Mississippi State University (4)
- University of Tennessee, Knoxville (4)
- City University of New York (CUNY) (3)
- University of Connecticut (3)
- University of Northern Iowa (3)
- California Polytechnic State University, San Luis Obispo (2)
- Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan (2)
- Selected Works (2)
- University of Arkansas, Fayetteville (2)
- University of Colorado Law School (2)
- University of Texas at El Paso (2)
- Ursinus College (2)
- Boise State University (1)
- Dakota State University (1)
- Dordt University (1)
- Iowa State University (1)
- Kutztown University (1)
- Louisiana State University (1)
- Publication Year
- Publication
-
- IGC Proceedings (1997-2023) (146)
- University of Nebraska-Lincoln Extension: Historical Materials (105)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (62)
- Forage News (45)
- All Current Publications (31)
-
- Historical Research Bulletins of the Nebraska Agricultural Experiment Station (19)
- All PIRU Publications (18)
- Agricultural Experiment Station Circulars (12)
- Agronomy Notes (12)
- Nebraska Agricultural Experiment Station: Historical Circulars (11)
- Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011) (9)
- Theses and Dissertations (9)
- Tim Johnson Postcard Collection (9)
- SDSU Extension Extra Archives (8)
- Electronic Thesis and Dissertation Repository (7)
- Historical Documents of the Purdue Cooperative Extension Service (7)
- Soil Science News and Views (7)
- UAES Bulletins (7)
- Kansas Agricultural Experiment Station Research Reports (6)
- Turkish Journal of Agriculture and Forestry (6)
- Polytechnic Journal (5)
- All Graduate Plan B and other Reports, Spring 1920 to Spring 2023 (3)
- Department of Entomology: Faculty Publications (3)
- Electronic Theses and Dissertations (3)
- Journal of the Iowa Academy of Science: JIAS (3)
- SDSU Extension Circulars (3)
- School of Natural Resources: Dissertations, Theses, and Student Research (3)
- Storrs Agricultural Experiment Station (3)
- Turkish Journal of Zoology (3)
- USDA Wildlife Services: Staff Publications (3)
Articles 1 - 30 of 658
Full-Text Articles in Entire DC Network
Leaf Optical And Indirect Lai Measurements In Wheat And Alfalfa At Maciv: Agmet Progress Report 89-4, E. A. Walter-Shea, B. L. Blad
Leaf Optical And Indirect Lai Measurements In Wheat And Alfalfa At Maciv: Agmet Progress Report 89-4, E. A. Walter-Shea, B. L. Blad
School of Natural Resources: Documents and Reviews
No abstract provided.
Developing Economic Injury Levels For Thrips (Frankliniella Occidentalis) In Idaho Alfalfa Under Controlled Pest Populations, John Reed Findlay, Joseph Sagers
Developing Economic Injury Levels For Thrips (Frankliniella Occidentalis) In Idaho Alfalfa Under Controlled Pest Populations, John Reed Findlay, Joseph Sagers
The Journal of Extension
Thrips are a new pest of alfalfa in Eastern Idaho. University of Idaho Extension Educators studied the yield losses associated with this pest in a controlled greenhouse experiment. This data has been used to calculate the economic injury level (EIL) of thrips in alfalfa. The EIL represents the level of insect infestation at which control measures will begin to be economically viable. We calculate that for the 2021 growing season conditions the EIL was approximately 20 thrips per six stems. We also calculated EIL curves that growers and consultants can use as spray costs and hay values change.
Comparison Of Private And Public Lab Fertilizer Recommendation Impacts On Field Crop Production And Soil Test Results, Megan Baker
Comparison Of Private And Public Lab Fertilizer Recommendation Impacts On Field Crop Production And Soil Test Results, Megan Baker
All Graduate Theses and Dissertations, Fall 2023 to Present
There are many sources that farmers utilize to determine fertilizer needs for crops such as private and public labs, crop advisors, and fertilizer dealers. In many cases, these sources provide recommendations for a specific crop that can vary greatly, which can lead to large differences in cost. An experiment was established in 2021 with 12 sites across the state of Utah in alfalfa, small grains, and corn to test and compare fertilizer recommendations from five labs. The recommendations tested were from two public labs (Utah State University and the University of Idaho) and three commercial labs located in the Western …
Microwave Emission Model Parameter Tuning For Surface Soil Moisture Retrieval Using Uav-Mounted Dual Polarization L-Band Radiometer, Santiago Hoyos Echeverri
Microwave Emission Model Parameter Tuning For Surface Soil Moisture Retrieval Using Uav-Mounted Dual Polarization L-Band Radiometer, Santiago Hoyos Echeverri
Open Access Theses & Dissertations
Surface soil moisture retrieval from L-band brightness temperature has been developed for the past decades due to multiple beneficial characteristics of 1-2 GHz frequency bands for remote sensing of the environment. Numerous microwave emission models have been proposed for tower and satellite-based operations with successful retrieval of surface soil moisture and vegetation water content. As a result of the development of cost-effective and low-mass microwave L-band radiometers such as the Portable L-band Radiometer (PoLRa), surface soil moisture surveying traditionally developed by satellite missions SMOS and SMAP can now be developed at local scales, bringing these operations to commercial small unmanned …
Comparison Of The In Vitro Fermentation Characteristic Of Fractionated Alfalfa And Sainfoin, L R. Mcmahon, M Goto, T A. Mcallister, G A. Jones, K J. Cheng
Comparison Of The In Vitro Fermentation Characteristic Of Fractionated Alfalfa And Sainfoin, L R. Mcmahon, M Goto, T A. Mcallister, G A. Jones, K J. Cheng
IGC Proceedings (1997-2023)
Alfalfa and sainfoin leaves were lyophilized and ground (A, S, respectively) or were fractionated into soluble (ASOL, SSOL) and insoluble (AINS, SINS)components and lyophilized and incubated in vitro with diluted ruminal fluid for 24h. Whole leaf and soluble fractions were also incubated with polyethylene glycol 8000 (PEG). Gas production (GP), ammonia concentration [NH3] and volatile fatty acid (VFA) production were lower (P< 0.05) from S and SSOL than from A and ASOL Insoluble fractions differed only in [NH3] (SINS < AINS, P < 0.05). Inclusion of PEG increased (P < 0.05) GP, [NH3] and VFA production from whole leaf and soluble fractions of sainfoin, but not alfalfa. Inactivating the condensed tannins in sainfoin with PEG overcame differences in degradability between these two forages.
Identification Of Alfalfa Chromosomes Using Giemas Banding And Image Analysis Techniques, G R. Bauchan, M A. Hossain
Identification Of Alfalfa Chromosomes Using Giemas Banding And Image Analysis Techniques, G R. Bauchan, M A. Hossain
IGC Proceedings (1997-2023)
Chromosomes of two diploid (2n=2x=16) subspecies of Medicago sativa, ssp. caerulea and ssp. falcata, their hybrid and tetraploid (2n=4x=32) cultivated alfalfa (M. sativa, ssp. sativa) were studied. Feulgen’s staining, C- and N-banding techniques and an image analysis system were used. The chromosomes of ssp. falcata have only centromeric bands, however, a multitude of bands were observed in both the C- and N-banding pattern of ssp. caerulea and ssp. sativa enabling the precise identification of each of the eight sets of chromosomes and development of a karyotype. The differences in banding patterns between the diploid subspecies makes it possible …
Aluminum Tolerance Qtl In Diploid Alfalfa, M K. Sledge, J H. Bouton, J Tamulonis, W A. Parrot, G Kochert
Aluminum Tolerance Qtl In Diploid Alfalfa, M K. Sledge, J H. Bouton, J Tamulonis, W A. Parrot, G Kochert
IGC Proceedings (1997-2023)
Aluminum (Al) toxicity associated with acid soils greatly inhibits alfalfa (Medicago sativa L.) productivity throughout much of the world’s major grassland areas. In this paper, we report the identification of quantitative trait loci (QTL) controlling aluminum tolerance in diploid alfalfa (Medicago sativa L). An in vitro callus growth bioassay was used to select aluminum tolerant and aluminum sensitive parents, and to screen an F2 population for aluminum tolerance. Fifty-eight cDNA probes were mapped to nine linkage groups, and the F2 genotypic classes were contrasted with means from the callus growth bioassay using ANOVA. We also used Mapmaker-QTL to …
Comparison Of Composition And Degradation Characteristics Of Early Bloom Alfalfa With Fenugreek (Trigonella Foenum-Graecum) Forages Harvested At Different Stages Of Maturity, Z Mir, P S. Mir, S N. Acharya, L A. Goonewardene
Comparison Of Composition And Degradation Characteristics Of Early Bloom Alfalfa With Fenugreek (Trigonella Foenum-Graecum) Forages Harvested At Different Stages Of Maturity, Z Mir, P S. Mir, S N. Acharya, L A. Goonewardene
IGC Proceedings (1997-2023)
The objective of this study was to compare the composition and degradation characteristics of early bloom alfalfa and fenugreek harvested after 9, 15 and 17 wk of growth. Crude protein (CP) content of fenugreek cut at 9, 15 and 17 wk was lower (P<0.05) than that of alfalfa. Neutral detergent fibre (NDF) and lignin content of fenugreek harvested after 15 and 17 wk were higher (P<0.05) than that of alfalfa. Ash content was lower (P<0.05) in fenugreek than for alfalfa. In vitro dry matter disappearance (IVDMD) of fenugreek cut at 15 and 17 wk was similar to that of alfalfa. Total in vitro gas production of fenugreek cut at the three stages of growth was not significantly different from those observed for alfalfa. Results indicate that chemical composition and IVDMD of fenugreek at all stages of …0.05)>
Quality Evaluation Of Feed Resources At The Newly Reclaimed Area In Egypt, M K. Hathout, F Z. Swidan, M F. El-Sayes, H A. Eid
Quality Evaluation Of Feed Resources At The Newly Reclaimed Area In Egypt, M K. Hathout, F Z. Swidan, M F. El-Sayes, H A. Eid
IGC Proceedings (1997-2023)
The objective of this study was to examine the productivity of Egyptian clover (Trifolium alexandrinum L.) interseeded with ryegrass (Lolium multiflorum) and alfalfa (Medicaga sativa L.). These species were planted in newly reclaimed land in Ismailia, Egypt under two fertilization systems; organic (OF) or chemical (CF) during winter season of (1994-1995) using a split plot design. Feeding quality of forages was evaluated by conducting digestibility trials with rams and feeding trials with growing lambs where forage was offered ad. libitum with 1% of LBW concentrate. Productivity data indicated that organic fertilization yielded significantly more DM. Chemical …
Ecosystem Services And Life Cycle Assessment Of Perennial And Annual Cropping Systems, M. Berti, A. Cecchin
Ecosystem Services And Life Cycle Assessment Of Perennial And Annual Cropping Systems, M. Berti, A. Cecchin
IGC Proceedings (1997-2023)
Corn cultivation has negative impacts to the environment, such as nitrate leaching, soil erosion, and nitrous oxide emissions. Perennial crops such as alfalfa (Medicago sativa L.) reduce annual disturbance of soil, which affects many biogeochemical cycles that are key to provide resilience and stability to cropping systems. Four three-year crop sequences were evaluated. 1) Corn-soybean-corn (CSC); 2) alfalfa-alfalfa-alfalfa (AAA); 3) Corn-spring planted alfalfa-alfalfa (CAA); and 4) Corn-intercropped/alfalfa-alfalfa-alfalfa (CAIAA). Modeling of C and N cycles were conducted with the Denitrification-Decomposition (DNDC) model and global warming potential (GWP) was estimated using life cycle assessment (LCA) methodology. The soil organic carbon (SOC) balance …
Drought Tolerance Dissection And Molecular Breeding In Alfalfa, Luo Dong, Qiang Zhou, Xueming Dong, Wenxian Liu, Zhipeng Liu
Drought Tolerance Dissection And Molecular Breeding In Alfalfa, Luo Dong, Qiang Zhou, Xueming Dong, Wenxian Liu, Zhipeng Liu
IGC Proceedings (1997-2023)
Drought stress is one of the leading impediments that limit the productivity of global alfalfa (Medicago sativa). The underlying molecular and genetic mechanisms for drought tolerance in alfalfa remain largely unclear. In order to fully reveal the transcriptional changes of alfalfa in response to abiotic stress, the alfalfa transcriptome database under mannitol (simulated drought stress), NaCl (simulated salt stress), or exogenous ABA application was built via various RNA-seq technologies. Through further screening of the transcriptome database, a number of genes significantly induced by drought stress, such as the Nuclear Transport Factor 2-like (MsNTF2L), Drought-Induced Unknown Protein 1 (MsDIUP1), …
Winter Performance Of North American Bos Grunniens Offered Hay Harvested From Different Forage Species, Jeff Lehmkuhler, G. Dike, M. Mccarty
Winter Performance Of North American Bos Grunniens Offered Hay Harvested From Different Forage Species, Jeff Lehmkuhler, G. Dike, M. Mccarty
IGC Proceedings (1997-2023)
Bos grunniens or the domesticated yak was brought to North America in the late 1800’s and early 1900’s. In Asia, yaks have been observed to lose 25% or more of their body weight over the winter in the high mountain altitudes. Little research has been conducted with the domesticated yak and their nutritional needs. Maintaining positive weight change during the winter is expected to improve the profitability and viability of yak production systems in North America. An on-farm study was conducted near Wellington, KY, USA to investigate the winter performance of yaks and hay type. Four outdoor grass lots approximate …
The Impact Of Adding Hops To Alfalfa At Different Rates On Silage Quality And Methane Emissions In Vitro, Erdem Gülümser, Hani̇fe Mut, Eki̇n Sucu, Uğur Başaran, Medi̇ne Çopur Doğrusöz
The Impact Of Adding Hops To Alfalfa At Different Rates On Silage Quality And Methane Emissions In Vitro, Erdem Gülümser, Hani̇fe Mut, Eki̇n Sucu, Uğur Başaran, Medi̇ne Çopur Doğrusöz
Turkish Journal of Agriculture and Forestry
Legumes are typically challenging to ensile due to their low concentration of water-soluble carbohydrates and high capacity for buffering. If legumes and medicinal plants are ensiled together, the silage quality increases, which benefits the digestive system of ruminates. The aim of this study was to research the effects of different alfalfa (Medicago sativa L.) and hops (Humulus lupulus L.) ratios on silage quality and in vitro rumen fermentation traits. The plant materials were chopped to a particle size of <2 cm; then alfalfa (A) and hops (H) were ensiled in ratios of 100A + 0H, 75A + 25H, 50A + 50H, 25A + 75H and 0A + 100H by weight with 4 replicates. Fresh silage samples were left to ferment for 45 days at 25 ± 2 °C. Subsequently, it was observed that hops added to alfalfa improved the silage’s fermentation qualities. At a 75A + 25H ratio, the silage quality increased due to having a lower pH and dry matter ratio as well as increased values for Flieg score, crude protein, relative feed, and condensed tannin concentration. A higher proportion of alfalfa in the silage mixture increased methane (CH4) and carbon dioxide (CO2) and decreased lactic acid (LA). Comparing 50A + 50H and 25A + 75H silages to 100A + 0H, the CH4 production was 26.19% and 27.80% lower, respectively, and the CO2 production decreased by 25.61% and 28.15%, respectively. Consequently, the 50A + 50H and 25A + 75H silage ratios are advised for feeding ruminants. Furthermore, more research with different forage combinations is required to understand how hops influence rumen fermentation.
Developing A Simple Bioassay For Detection Of Alfalfa Autotoxicity In Field Soils, P. Baisley, K. Cassida, S. Gruss, E. Hill
Developing A Simple Bioassay For Detection Of Alfalfa Autotoxicity In Field Soils, P. Baisley, K. Cassida, S. Gruss, E. Hill
IGC Proceedings (1997-2023)
Alfalfa autotoxicity causes yield reductions in alfalfa production by inhibiting plant establishment and decreasing plant productivity. Accurate predictions regarding autotoxic potential of the soil in a given field at a given time are an essential tool for alfalfa growers to make appropriate planting decisions. To address this issue, we are developing a soil bioassay that can be conducted as a mail-in soil test for alfalfa growers through plant diagnostic service laboratories. We hypothesize that we will detect differences in seed germination, emergence, root length, and root morphology between control and autotoxic soils. A preliminary trial testing alfalfa field soils and …
Grazing Management For Alfalfa Persistence And Productivity In Warm-Climate Regions, D. Basigalup
Grazing Management For Alfalfa Persistence And Productivity In Warm-Climate Regions, D. Basigalup
IGC Proceedings (1997-2023)
Alfalfa is the most important cultivated forage crop in Argentina, where about 3 million hectares are grown. Even though the use of direct grazing is coming down during the last 15 years, it is still important for both beef and dairy production. Alfalfa grazing can play an important role in reducing operative costs and decreasing quality loss due to forage conservation (hay or silage). In this paper, the main concepts necessary to implement adequate and practical rotational grazing systems are briefly discussed. Particular attention is given to issues such as grazing frequency, grazing period, pasture use efficiency, and alfalfa quality …
Assessing The Nutrient Status Of Alfalfa Stands In Kentucky, William R. Fleming, Christopher D. Teutsch, Edwin L. Ritchey, John H. Grove
Assessing The Nutrient Status Of Alfalfa Stands In Kentucky, William R. Fleming, Christopher D. Teutsch, Edwin L. Ritchey, John H. Grove
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L.) is a perennial forage legume and is sometimes referred to as the “Queen of Forages” due to its high nutritional value. Alfalfa is commonly produced as hay for use in the dairy and equine industries. Alfalfa yield increased exponentially from the 1950s to the1980s due to new breeding and management innovations. However, during the 1980s yields plateaued at around 7.5 Mg/ha and remain there today. The overarching goal of this study was to determine the role of soil fertility in the observed yield plateau. Fifty alfalfa stands in Kentucky were sampled to gather information about …
Prospects For Improving Alfalfa Yield Using Genomic- And Phenomic-Based Breeding, M. W. Francis, D. Pap, A. Krill-Brown, E. C. Brummer
Prospects For Improving Alfalfa Yield Using Genomic- And Phenomic-Based Breeding, M. W. Francis, D. Pap, A. Krill-Brown, E. C. Brummer
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L.) is a perennial outcrossing legume that is cultivated as an important forage crop in many parts of the world. Yield is the most important trait for profitable alfalfa production, yet over the last 30 years yield improvement in California has stagnated. Current breeding methods focus on recurrent phenotypic selection; however, alternatives incorporating genomic- and phenomic-based information may enhance genetic gain and help to address the lack of yield improvement. Here we attempt to increase the yield potential of alfalfa using genomic selection (GS) in combination with high throughput phenotyping (HTP). A total of 193 families …
Effects Of Fall Dormancy, Cutting Frequency, And K Application Rate On Dry Matter Yield And Nutritive Value Of Alfalfa, Ji Yung Kim, J. S. Choi, M. H. Jo, K. I. Sung
Effects Of Fall Dormancy, Cutting Frequency, And K Application Rate On Dry Matter Yield And Nutritive Value Of Alfalfa, Ji Yung Kim, J. S. Choi, M. H. Jo, K. I. Sung
IGC Proceedings (1997-2023)
[Introduction] This study was conducted to determine the effect of the cutting frequency and K application rate on the dry matter yield (DMY) and nutritive value of new alfalfa varieties in Korea.
[Material and Methods] The sowing date and rate were September 21, 2019, and 20 kg/ha, respectively. The treatment was by the split-split plot design, and the main plot was the Fall dormancy (FD) of 3 (Rugged Rancher), 4 (SW4113), and 9 (SW9720), the sub-plot was excess 40 day (LCF), from 31 to 40 days (MCF), and under 30 day (HCF) times of cutting frequency …
Irrigation Effects On Forage Dry Matter Yield And Nutritive Value Of Alfalfa, Rudra Baral, Doohong Min
Irrigation Effects On Forage Dry Matter Yield And Nutritive Value Of Alfalfa, Rudra Baral, Doohong Min
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L.) is among the top four field crops in United States (U.S.) in terms of acreage harvested and economic value. Several studies have documented that alfalfa requires high amount of water compared to other major field crops. However, more than 65% alfalfa in the U.S. is grown under rainfed condition where severe to moderate drought condition has been pronounced during alfalfa growing season. The magnitude of yield loss due to water-limited conditions is still unknown. In this context, the objective of our study is to evaluate the forage dry matter yield and forage nutritive value of …
Farmer Experiences With Alfalfa In The Southern U.S.A., M. K. Mullenix, L. S. Silva, C. G. Prevatt, J. J. Tucker
Farmer Experiences With Alfalfa In The Southern U.S.A., M. K. Mullenix, L. S. Silva, C. G. Prevatt, J. J. Tucker
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L.) is a forage crop of primary importance in the United States (USA); however, adoption and use in the southern USA region has been limited. The combination of adapted alfalfa cultivars and management strategies which demonstrate extended forage growing season length, improved forage nutritive value, and reduced N fertilizer inputs have renewed interest in forage-livestock farmers to consider planting alfalfa. A series of Extension-based educational strategies have been used in the southern USA to 1) create awareness on the use of alfalfa, 2) educate farmers regarding establishment and management practices, and 3) showcase opportunities and challenges …
Effects Of Insecticide And Tolerant Alfalfa Cultivars On Potato Leafhopper (Empoasca Fabae) Populations And Forage Yields In Quebec (Canada), Philippe Seguin, X. Shi, J. Saguez, Huguette Martel, A. Claessens
Effects Of Insecticide And Tolerant Alfalfa Cultivars On Potato Leafhopper (Empoasca Fabae) Populations And Forage Yields In Quebec (Canada), Philippe Seguin, X. Shi, J. Saguez, Huguette Martel, A. Claessens
IGC Proceedings (1997-2023)
The potato leafhopper [PLH, Empoasca fabae (Harris)], which affects several crops including alfalfa (Medicago sativa L.), is a recurrent problem in several regions of Quebec. The objective was to evaluate alfalfa management tools in order to reduce yield losses caused by this pest. An experiment was conducted at two sites in Quebec over three field seasons to evaluate the impact of insecticide applications and the use of PLHtolerant cultivars on forage yield and PLH populations. Foliar insecticide applications in the seeding year reduced PLH populations but generally failed to impact alfalfa yields compared to untreated alfalfa. However, in one …
Exploring The Role Of Salt-Tolerant Halomonas Inoculant In Altering Plant Gene Expression To Improve Salt Tolerance In Alfalfa., Ashley Kay Miller
Exploring The Role Of Salt-Tolerant Halomonas Inoculant In Altering Plant Gene Expression To Improve Salt Tolerance In Alfalfa., Ashley Kay Miller
Theses and Dissertations
Soil salinity is an increasing problem facing agriculture in many parts of the world. Climate change and irrigation practices have led to decreased yields of large areas of farmland due to increased salt levels in the soil. Irrigation introduces salts to the soil that with time accumulate and threaten crop yield. In arid climates like Utah, the practice of irrigation is especially threatening to salt-sensitive crops including alfalfa (Medicago sativa). Plants that have tolerance to salt are needed to feed livestock and the world's population. One approach to address this problem is to introduce genes encoding salt tolerance into the …
A New Perennial Legume To Combat Dryland Salinity In South-Western Australia, L. W. Bell, M. A. Ewing, M. Ryan, S. J. Bennett, G. A. Moore
A New Perennial Legume To Combat Dryland Salinity In South-Western Australia, L. W. Bell, M. A. Ewing, M. Ryan, S. J. Bennett, G. A. Moore
IGC Proceedings (1997-2023)
Dryland salinity has devastated large tracts of productive land in Australia. This has resulted from the clearing of native perennial vegetation and its replacement with annual crops and pastures. As annual plants are shallow rooted and only use water during their winter-spring growing season, unutilised rainwater leaks into groundwater tables which rise and bring stored salt to the soil surface. The adoption of deep rooted perennial pasture plants that increase the water use can help to manage dryland salinity whilst maintaining productivity. However, new plants are needed as few perennial pasture options currently exist. Preliminary research into the potential of …
Soil Carbon Sequestration Under Three Years Of No-Till Forage Cropping Systems, D. H. Min, J. D. Deyoung, Richard Leep
Soil Carbon Sequestration Under Three Years Of No-Till Forage Cropping Systems, D. H. Min, J. D. Deyoung, Richard Leep
IGC Proceedings (1997-2023)
The effects of reduced tillage on soil organic carbon (SOC) are generally well established (Chan et al., 2002; Cabardella & Elliott, 1992). The effects of different crops are also somewhat understood (Drinkwater et al., 1998). However, many of these studies are done in the laboratory to study the effects of crop residues on SOC. Many forage-based systems have very little crop residue returned to the field. What residue does return is often in the form of manure or compost, which is usually broken down much more rapidly than most crop residues. The objective of this study is to …
Can Alfalfa Nutrient Concentrate Serve As A Feed Ingredient For Feeding Juvenile Yellow Perch (Perca Flavescens)?, William J. Sullivan
Can Alfalfa Nutrient Concentrate Serve As A Feed Ingredient For Feeding Juvenile Yellow Perch (Perca Flavescens)?, William J. Sullivan
Theses and Dissertations
This study evaluated the potential of alfalfa nutrient concentrate (ANC) used in feed for yellow perch. We assessed the quality of ANC based on pellet functionality, digestibility, and growth performance of perch fed with diets including various levels of ANC (0-20 g/100 g diet) to replace fishmeal protein in a control diet based on a 9-week feeding with three replications per diet. Pellet bulk density, durability, water stability, and oil retention capacity increased with fishmeal replacement. Growth rate, feed conversion ratio, satiation feed intake, and protein retention were similar for fish fed different diets (P>0.05). Fish fed ANC-20 had …
Practical Improvements For Pivot And Surface Irrigation, Jonathan A. Holt
Practical Improvements For Pivot And Surface Irrigation, Jonathan A. Holt
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Irrigation is critical to meeting global food and fiber demands. Optimizing agricultural irrigation may help sustain production levels, while reducing its demand for water. This research evaluated precision sprinklers and drip irrigation for pivots, five pivot track mitigation tools, three scientific irrigation scheduling (SIS) methods, sensors for surface irrigation cutoff, and automating surface systems to implement surge irrigation. With pivots and surface irrigation being the most common methods for irrigation in the West, small improvements from these tools could result in significant water savings.
Low energy precision application (LEPA) sprinklers and mobile drip irrigation (MDI) were tested on two pivots. …
Assessing Within-Field Variation In Alfalfa Leaf Area Index Using Uav Visible Vegetation Indices, Keegan Hammond, Ruth Kerry, Ryan R. Jensen, Ross Spackman, April Hulet, Bryan G. Hopkins, Matt A. Yost, Austin P. Hopkins, Neil C. Hansen
Assessing Within-Field Variation In Alfalfa Leaf Area Index Using Uav Visible Vegetation Indices, Keegan Hammond, Ruth Kerry, Ryan R. Jensen, Ross Spackman, April Hulet, Bryan G. Hopkins, Matt A. Yost, Austin P. Hopkins, Neil C. Hansen
Plants, Soils, and Climate Faculty Publications
This study examines the use of leaf area index (LAI) to inform variable-rate irrigation (VRI) for irrigated alfalfa (Medicago sativa). LAI is useful for predicting zone-specific evapotranspiration (ETc). One approach toward estimating LAI is to utilize the relationship between LAI and visible vegetation indices (VVIs) using unmanned aerial vehicle (UAV) imagery. This research has three objectives: (1) to measure and describe the within-field variation in LAI and canopy height for an irrigated alfalfa field, (2) to evaluate the relationships between the alfalfa LAI and various VVIs with and without field average canopy height, and (3) to …
Antioxidative Activities Of Alfalfa And Timothy Varieties, J. K. Lee, H. S. Park, J. G. Kim, B. H. Paek, J. H. Fike
Antioxidative Activities Of Alfalfa And Timothy Varieties, J. K. Lee, H. S. Park, J. G. Kim, B. H. Paek, J. H. Fike
IGC Proceedings (1997-2023)
The term "functional foods" is often used as a generic description for the beneficial effects of ingested foods that go beyond their traditional nutritive value (Bauman et al., 2001). Milk and dairy products are important dietary sources of nutrients, providing energy, high quality protein, and a variety of vitamins and minerals. Recent research has focused on altering the fat and protein content of milk and other dairy products in order to improve their nutrient content to more aptly reflect current dietary recommendations and trends. As a result, additional focus is being given to designing foods that have beneficial effects …
Increased Cuticular Wax Accumulation And Enhanced Drought Tolerance In Transgenic Alfalfa By Overexpression Of A Transcription Factor Gene, Z. -Y. Wang, J. -Y. Zhang, C. Broeckling, E. Blancaflor, M. Sledge, L. Summer
Increased Cuticular Wax Accumulation And Enhanced Drought Tolerance In Transgenic Alfalfa By Overexpression Of A Transcription Factor Gene, Z. -Y. Wang, J. -Y. Zhang, C. Broeckling, E. Blancaflor, M. Sledge, L. Summer
IGC Proceedings (1997-2023)
Plant cuticular waxes play an important role in protecting aerial organs from damage caused by multiple environmental stresses such as drought, cold, UV radiation, pathogen infection and insect attack. The identification of leaf wax genes involved in stress tolerance is expected to have great potential for crop improvement. Cuticular waxes are complex mixtures of very long chain fatty acids, alkanes, primary and/or secondary alcohols, aldehydes, ketones, esters, triterpenes, sterols and flavonoids. Mutant analysis in Arabidopsis has contributed to the identification of the components and genes involved in wax deposition. However, no information is available on the effects of overexpression of …
Development Of Alfalfa (Medicago Sativa L.) Transgenic Plants Expressing A Bacillus Thuringiensis Endotoxin And Their Evaluation Against Alfalfa Caterpillar (Colias Lesbia), F. Ardila, M. C. Gómez, M. J. Diéguez, E. M. Pagano, M. Turica, R. Lecuona, V. Arolfo, D. Basigalup, C. Vázquez Rovere, E. Hopp, P. Franzone, R. D. Rios
Development Of Alfalfa (Medicago Sativa L.) Transgenic Plants Expressing A Bacillus Thuringiensis Endotoxin And Their Evaluation Against Alfalfa Caterpillar (Colias Lesbia), F. Ardila, M. C. Gómez, M. J. Diéguez, E. M. Pagano, M. Turica, R. Lecuona, V. Arolfo, D. Basigalup, C. Vázquez Rovere, E. Hopp, P. Franzone, R. D. Rios
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L.) is the most important forage crop in Argentina, with ca. 6 million cultivated hectares. The production of this crop is limited by the alfalfa caterpillar (Colias lesbia) which causes a loss equivalent to at least 10% of the biomass per year. No natural tolerance against this lepidoptera was found in alfalfa germplasm, hampering the development of tolerant cultivars by conventional breeding. This pest is usually controlled by using chemical insecticides but this has adverse effects on beneficial insects and the environment. Alternatively, low doses of commercial Bt insecticides (40 to 70 g/ha) also …