HomePublicationsCSA NewsIssues Careers & Education MentoringSeeking 2020 Golden Opportunity and Greenfield Scholar Mentors! February 2, 2020 How to conduct a literature review January 29, 2020 News & Perspectives NewsCall for 2020 AGI nominations February 29, 2020 Congratulations to our 2019 Photo Contest winners! February 27, 2020 Science policyResearch in the 2021 budget February 27, 2020 PublicationsInside this issue February 2, 2020 Call for nominations: ASA editor-in-chief, The Plant Genome editor February 2, 2020 Women in scienceFinding your voice: The art of advocacy February 2, 2020 MeetingsScience and positive media relations: First workshop held in San Antonio January 27, 2020 March 2020 issueVolume 65, Issue 3Inside this issueArtist's rendition of a Hohokam field by Michael Hampshire (courtesy of Pueblo Grande Museum, City of Phoenix). The Hohokam, prehistoric farmers in the Salt River Valley of Arizona, used a complex irrigation system to farm in a hostile desert environment. Over time, saline irrigation water contributed to soil degradation and the eventual collapse of the Hohokam civilization. See story on page 6. People Member NewsMembership milestones January 29, 2020 Science FeaturesSaline soils and the agricultural failure of a prehistoric population February 27, 2020 Plant blindness: How seeing green creates cultural disengagement with agriculture February 2, 2020 Science briefsWild pigs can impact water quality February 27, 2020 USDA core collection of common bean needs to be updated February 27, 2020 Extreme surface temperatures may threaten crop production February 26, 2020 Conserving water with cover crop in no-till systems February 2, 2020 Nitrogen release from organic fertilizers Is variable but predictable February 2, 2020 Enlightened oversight of genetically engineered crops February 2, 2020 Farms need green and animal manure February 2, 2020 Removal of a common antibiotic from water by clay-coated diatoms February 2, 2020 Organic matter chemistry controls CO2 flush February 2, 2020 Low-density alfalfa improves semiarid grassland without soil water depletion February 2, 2020 Students Spring SASES conference in Iowa February 27, 2020 Graduate student webinar series February 2, 2020 Meet the 2020 SASES national officers February 2, 2020