California Agriculture最新文献_第6页

Addressing organizational climate can potentially reduce sexual harassment of female agricultural workers in California 解决组织氛围可能会减少加州女性农业工人的性骚扰

IF 1.3 4区农林科学

California Agriculture Pub Date : 2021-01-01 DOI: 10.3733/ca.2021a0014

Malcolm B. Hobbs, Emanuelle Klachky, M. Cooper

引用次数: 1

Growers follow the label: An analysis of bee-toxic pesticide use in almond orchards during bloom 种植者遵循标签:杏树开花期间蜜蜂有毒农药的使用分析

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-12-21 DOI: 10.3733/ca.2020a0030

J. L. Durant, Brittney K. Goodrich, K. T. Chang, Evan Yoshimoto

{"title":"Growers follow the label: An analysis of bee-toxic pesticide use in almond orchards during bloom","authors":"J. L. Durant, Brittney K. Goodrich, K. T. Chang, Evan Yoshimoto","doi":"10.3733/ca.2020a0030","DOIUrl":"https://doi.org/10.3733/ca.2020a0030","url":null,"abstract":"California almond orchards are most U.S. beekeepers' first stop on their pollination and honey production circuit, so the agrochemicals bees are exposed to in almonds can shape the vitality of their colony for the rest of the year. We explored the potential for honey bee exposure to bee-toxic agrochemicals during almond bloom by utilizing the California Department of Pesticide Regulations' Pesticide Use Report database from 1990 to 2016. We found that overall, growers are observing the pesticide labels and reducing their use of labeled bee-toxic pesticides during almond bloom. However, we also found that insect growth regulators, fungicides and organosilicone surfactants — agrochemicals often not labeled as toxic to bees — are commonly applied during almond bloom. These agrochemicals can be sublethally or synergistically toxic to adult honey bees and bee larvae, presenting potential harm to colonies during almond pollination. Our findings demonstrate the need for a shift in the U.S. Environmental Protection Agency's labeling requirements, as well as continued communication between almond growers, pesticide applicators and beekeepers to keep colonies at a low risk of bee-toxic agrochemical exposure.","PeriodicalId":9409,"journal":{"name":"California Agriculture","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43636036","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: 7

Terminated marketing order provided resources to California peach and nectarine growers 终止的营销订单为加州桃和油桃种植者提供了资源

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-10-20 DOI: 10.3733/ca.2020a0023

Zoe T. Plakias, Rachel E Goodhue, Jeffrey C Williams

引用次数: 0

Monterey pine forest made a remarkable recovery from pitch canker 蒙特利松林从沥青溃疡中恢复得很好

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-10-20 DOI: 10.3733/ca.2020a0019

T. Gordon, G. J. Reynolds, S. C. Kirkpatrick, A. Storer, D. Wood, D. M. Fernández, B. McPherson

引用次数: 2

California's agritourism operations expand despite facing regulatory challenges 尽管面临监管挑战，加州的农业业务仍在扩张

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-10-20 DOI: 10.3733/ca.2020a0026

Shermain D. Hardesty, P. Leff

引用次数: 5

Agricultural managed aquifer recharge — water quality factors to consider 农业管理含水层补给——需考虑的水质因素

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-10-20 DOI: 10.3733/ca.2020a0020

Hannah Waterhouse, S. Bachand, D. Mountjoy, J. Choperena, Phillip A. M. Bachand, Halen E Dahlke, W. Horwath

{"title":"Agricultural managed aquifer recharge — water quality factors to consider","authors":"Hannah Waterhouse, S. Bachand, D. Mountjoy, J. Choperena, Phillip A. M. Bachand, Halen E Dahlke, W. Horwath","doi":"10.3733/ca.2020a0020","DOIUrl":"https://doi.org/10.3733/ca.2020a0020","url":null,"abstract":"The resilience and productivity of California's agriculture is threatened by groundwater overdraft, reduction in aquifer water quality, increased land subsidence damage to infrastructure and an irreversible reduction in groundwater storage capacity. Intentionally flooding agricultural fields during winter — a practice referred to as agricultural managed aquifer recharge (AgMAR) — can help counteract overdraft. However, the potential for AgMAR to exacerbate nitrate/salt leaching and contamination of at-risk aquifers remains a critical concern. To quantify the risk of groundwater contamination with AgMAR, we took 30-foot-long soil cores in 12 almond orchards, processing tomato fields and wine grape vineyards on low- and high-permeability soils, measured nitrate and total dissolved solids concentrations and calculated stored nitrate-N. Wine grape vineyards on permeable soils had the least nitrate leaching risk observed. However, almond orchards and tomato fields could be leveraged for AgMAR if dedicated recharge sites were established and clean surface water used for recharge. Historical land use, current nitrogen management and soil permeability class are the main factors to consider before implementing AgMAR.","PeriodicalId":9409,"journal":{"name":"California Agriculture","volume":"74 1","pages":"144-154"},"PeriodicalIF":1.3,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44619458","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: 17

Q-and-A: COVID-19's effects on food systems, youth development programs and nutrition Q和A：新冠肺炎对粮食系统、青年发展计划和营养的影响

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-10-20 DOI: 10.3733/ca.2020a0024

L. Crowder

引用次数: 0

Strawberry growers are unlikely to forgo soil fumigation with disease-resistant cultivars alone 草莓种植者不太可能放弃仅用抗病品种进行土壤熏蒸

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-10-20 DOI: 10.3733/ca.2020a0021

J. Guthman

{"title":"Strawberry growers are unlikely to forgo soil fumigation with disease-resistant cultivars alone","authors":"J. Guthman","doi":"10.3733/ca.2020a0021","DOIUrl":"https://doi.org/10.3733/ca.2020a0021","url":null,"abstract":"A major collaborative project launched in 2017 to accelerate the development of disease-resistant strawberry cultivars is responding urgently to two developments: increasing restrictions on fumigant use and the appearance of two novel pathogens not evidently manageable with allowed fumigants. As part of that project, I sought to understand the factors that guide growers' cultivar choice and assess their willingness to choose a pathogen-resistant cultivar to reduce or potentially replace fumigation. From a survey completed by 33 strawberry growers and in-depth interviews with 20 growers, I found that most growers prioritize yield in choosing cultivars, despite the industrywide problem with low prices. Few growers said they would be willing to substitute disease-resistant cultivars for fumigation without fail-safe disease control methods. Many growers, even those with existing organic programs, would opt for soilless systems in a tighter regulatory environment. This study thus suggests that disease resistance breeding must be coupled with support for other disease management techniques, and the economic situation that makes growers feel that they cannot forgo yield also needs attention.","PeriodicalId":9409,"journal":{"name":"California Agriculture","volume":"74 1","pages":"138-143"},"PeriodicalIF":1.3,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48138502","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: 3

Reply to: Complexity in 4-H youth enrollment: A response to Davy et al. (2020) 回复：4-H青年入学的复杂性：对Davy等人的回应（2020）

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-10-01 DOI: 10.3733/ca.2020a0025

M. Steven, Davy Josh, F. Larry, Caeton Nate

引用次数: 0

Brown spot in table grape Redglobe controlled in study with sulfur dioxide and temperature treatments 二氧化硫和温度处理对红葡萄褐斑病的控制研究

IF 1.3 4区农林科学

California Agriculture Pub Date : 2020-10-01 DOI: 10.3733/ca.2020a0022

Young Cassandra A., Choudhury Robin A., Crisosto Carlos H., Gubler W. Douglas

{"title":"Brown spot in table grape Redglobe controlled in study with sulfur dioxide and temperature treatments","authors":"Young Cassandra A., Choudhury Robin A., Crisosto Carlos H., Gubler W. Douglas","doi":"10.3733/ca.2020a0022","DOIUrl":"https://doi.org/10.3733/ca.2020a0022","url":null,"abstract":"Brown spot is a postharvest disease of grapes caused by Cladosporium species in the San Joaquin Valley of California. It spreads during cold storage and transport, resulting in severe economic losses to late table grape cultivars, which are grown mainly for export to countries such as China and Mexico. We examined the effect of temperature and sulfur dioxide (SO2) treatments on fungal growth and infection of Redglobe berries by three Cladosporium species: Cladosporium ramotenellum, C. cladosporioides and C. limoniforme. Redglobe is especially popular for export. Fungal colonies growing on potato dextrose agar in petri plates stored at −2°C grew slower than those stored at 2°C, and an 400 ppm-h SO2 treatment significantly reduced fungal growth of all three species and at all temperatures tested. Redglobe berries inoculated with the Cladosporium species, treated with SO2 concentrations of 100 ppm-h, 200 ppm-h and 400 ppm-h and incubated in high relative humidity chambers for 28 to 32 days at 2°C, showed little incidence of disease. The development of brown spot on berries was entirely prevented with the treatment of 200 ppm-h SO2 for all Cladosporium species tested.","PeriodicalId":9409,"journal":{"name":"California Agriculture","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44102528","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