California Agriculture最新文献_第8页

Job satisfaction assessments of agricultural workers help employers improve the work environment and reduce turnover 农业工人的工作满意度评估有助于雇主改善工作环境，减少人员流失

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-03-01 DOI: 10.3733/ca.2020a0002

Malcolm B. Hobbs, Emanuelle Klachky, M. Cooper

引用次数: 7

Cover crop and mulch practices reduce agricultural pollutant loads in stormwater runoff from plastic tunnels 覆盖作物和覆盖措施减少了塑料隧道雨水径流中的农业污染物负荷

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-03-01 DOI: 10.3733/ca.2020a0004

O. Daugovish, B. Faber, E. Takele, J. Whiteford, Laosheng Wu

{"title":"Cover crop and mulch practices reduce agricultural pollutant loads in stormwater runoff from plastic tunnels","authors":"O. Daugovish, B. Faber, E. Takele, J. Whiteford, Laosheng Wu","doi":"10.3733/ca.2020a0004","DOIUrl":"https://doi.org/10.3733/ca.2020a0004","url":null,"abstract":"Macrotunnel production systems contribute over $1 billion to California's economy, but despite increased use, guidance to help macrotunnel growers limit agricultural pollutant loads in rainfall-induced runoff is sparse. Using raspberry as a model crop, we evaluated four runoff management practices during two rainy seasons of the normal 3-year raspberry production cycle: barley cover crop seeded at 500 pounds per acre, weed barrier fabric, yard waste mulch spread 2 to 3 inches thick, and polyacrylamide (PAM). Treatments were applied to 300-foot-by-6-foot-wide post rows. Barley cover crop and mulch reduced combined nitrate and nitrite nitrogen in runoff by 21% to 48% at some runoff events and reduced nitrate nitrogen in soil and leachate to groundwater by 52% to 90%. All treatments reduced turbidity and phosphorus levels in runoff and had 75% to 97% less sediment accumulation compared with bare soil. Additionally, all treatments except PAM reduced weed densities by 48% to 87% compared with bare ground, which reduced the costs of weed management. Barley cover crop had the lowest estimated costs (~$60.00 per tunnel period), while PAM and mulch were highest (~$193.00 per tunnel period).","PeriodicalId":9409,"journal":{"name":"California Agriculture","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47243183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Agricultural water use accounting provides path for surface water use solutions 农业用水核算为地表水利用解决方案提供了途径

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-03-01 DOI: 10.3733/ca.2020a0003

G. Mcgourty, David A. Lewis, J. Metz, J. Harper, R. Elkins, J. Christian-Smith, Prahlad D. Papper, L. Schwankl, T. Prichard

{"title":"Agricultural water use accounting provides path for surface water use solutions","authors":"G. Mcgourty, David A. Lewis, J. Metz, J. Harper, R. Elkins, J. Christian-Smith, Prahlad D. Papper, L. Schwankl, T. Prichard","doi":"10.3733/ca.2020a0003","DOIUrl":"https://doi.org/10.3733/ca.2020a0003","url":null,"abstract":"Agricultural water demands can conflict with habitat needs in many North Coast watersheds. Understanding different water use patterns can help reduce conflict over limited supplies. We measured on-farm crop water use and conducted grower interviews to estimate the agricultural water demand in the upper Russian River and Navarro River watersheds. Annual agricultural water demand was less than 11% in the Russian River, and 2% in Navarro River, of the total annual discharge in each watershed. However, because demands are concentrated in the dry season when instream flows are at a minimum, these relatively small amounts can represent a significant constraint to stream habitat conditions. We have shared our study results in broad basin and community water resource planning efforts, including flow management of the Russian and Navarro rivers and implementation of the Sustainable Groundwater Management Act in the Ukiah Basin. Findings and recommendations from this study have influenced on-the-ground solutions to meet water demand in these watersheds, including construction of off-stream wintertime storage capacity to replace summertime stream diversions, and use of a municipal recycled water conveyance system as a replacement for summer diversions.","PeriodicalId":9409,"journal":{"name":"California Agriculture","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46493366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Financial effect of limiting pesticide use near schools for almonds in nine counties depends on soils and weather 九个县限制学校附近杏仁农药使用的财政影响取决于土壤和天气

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-03-01 DOI: 10.3733/ca.2020a0001

R. Goodhue, K. Klonsky, Christopher DeMars, S. Blecker, J. Steggall, Minghua Zhang, R. Steenwyk

{"title":"Financial effect of limiting pesticide use near schools for almonds in nine counties depends on soils and weather","authors":"R. Goodhue, K. Klonsky, Christopher DeMars, S. Blecker, J. Steggall, Minghua Zhang, R. Steenwyk","doi":"10.3733/ca.2020a0001","DOIUrl":"https://doi.org/10.3733/ca.2020a0001","url":null,"abstract":"Effective Jan. 1, 2018, the California Department of Pesticide Regulation enacted a regulation regarding the use of pesticides near public K-12 schools and licensed child day care centers, including a provision that bans specific types of applications, including air-blast and air-assist, during weekday school hours (6 a.m. to 6 p.m.) to provide an additional safety margin for pesticide exposure beyond those provided by other regulations. We considered the financial effect on almond growers in nine counties, accounting for four-fifths of total almond production in 2014, if they had been unable to complete a standard spring disease management program on any buffer zone acreage. Results indicated that total annual losses for those counties if such a regulation had been in effect would have been $8.7 million, with per-acre losses ranging from 22% to over 50% of total operating costs, depending on the county. However, using a methodology that took into account historical weather and soil hydrologic group data, we estimated average annual losses in the nine counties among almond growers would have been under $0.2 million because the regulation would have affected the number of sprays completed for relatively few acres in relatively few years.","PeriodicalId":9409,"journal":{"name":"California Agriculture","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48190820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Hasty responses to foodborne illness outbreaks impact California growers 对食源性疾病爆发的快速反应影响了加州种植者

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-03-01 DOI: 10.3733/ca.2020a0007

B. Latack, Rebecca K. Ozeran

引用次数: 5

Natural history for all Californians 所有加州人的自然历史

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-03-01 DOI: 10.3733/ca.2020a0006

引用次数: 0

Youth in 4-H Latino Initiative programs achieve similar outcomes to youth in 4-H community clubs 参加4-H拉丁裔倡议计划的青少年与参加4-H社区俱乐部的青少年取得了相似的成果

IF 1.3 4区农林科学