scholarly journals Runoff Loss of Pesticides and Soil: A Comparison between Vegetative Mulch and Plastic Mulch in Vegetable Production Systems

2001 ◽  
Vol 30 (5) ◽  
pp. 1808-1821 ◽  
Author(s):  
Pamela J. Rice ◽  
Laura L. McConnell ◽  
Lynne P. Heighton ◽  
Ali M. Sadeghi ◽  
Allan R. Isensee ◽  
...  
Weed Science ◽  
2017 ◽  
Vol 66 (1) ◽  
pp. 142-148 ◽  
Author(s):  
Thomas V. Reed ◽  
Nathan S. Boyd ◽  
P. Christopher Wilson ◽  
Peter J. Dittmar

Mulches used in plasticulture systems could decrease dissipation of fomesafen, a protoporphyrinogen oxidase inhibitor, and dissuade producers from using the herbicide for fear of crop injury in subsequent growing seasons. Field experiments were conducted in Balm, FL, in 2015 and 2016 to investigate the effect of different plastic mulches on fomesafen dissipation, squash tolerance, and efficacy on purple nutsedge. Squash was injured less than 5% from fomesafen applications. The use of plastic mulches reduced purple nutsedge density at transplant by 60% compared with the no-mulch treatment. At transplant, treatments with low-density polyethylene mulch (LDPE), virtually impermeable film (VIF), and totally impermeable film (TIF) mulch had greater than 2-fold the fomesafen concentrations than treatments with clear or no mulch. At harvest in 2015, LDPE, VIF, and TIF treatments had greater fomesafen concentrations than clear and no-mulch treatments; however, concentrations in 2016 were similar for all treatments. Fomesafen can persist at high concentrations throughout the growing season in Florida plasticulture possibly limiting producer options for crop rotation and the use of cover crops.


Environments ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 36
Author(s):  
Benjamin van Schothorst ◽  
Nicolas Beriot ◽  
Esperanza Huerta Lwanga ◽  
Violette Geissen

Microplastics (MPs) constitute a known, undesirable contaminant of the ecosystems. Land-based pollution is considered to be an important contributor, but microplastics in the terrestrial environment remains largely unquantified. Some agriculture practices, such as plastic mulch and compost application, are suspected to be major sources of microplastics as plastics are exposed to weathering or are present in organic fertilizers. The overall aim of this research is to bridge the terrestrial plastic contamination information gap, focusing on light density microplastics in two vegetable production systems in Southeast Spain and in the Netherlands. The selected farmer in Spain used plastic mulch for more than 12 years whereas the two farmers in the Netherlands annually applied 10 t ha−1 compost for the past 7 and 20 years. Samples from two different depths were collected: 0–10 cm and 10–30 cm. High quality compost samples originating from municipal organic waste and from garden and greenhouse waste were obtained from two Dutch compost plants. All samples from both Spanish (n = 29) and Dutch (n = 40) soils were contaminated by microplastics, containing 2242 ± 984 MPs kg−1 and 888 ± 500 MPs kg−1, respectively. Compost samples from municipal organic waste (n = 9) were more contaminated than the ones from garden and green house wastes (n = 19), with, respectively, 2800 ± 616 MPs kg−1 and 1253 ± 561 MPs kg−1. These results highlight the need for studies focusing on the effects of microplastics in the environment and the need for monitoring campaigns and the implementation of thresholds to regulate the microplastic contamination.


2009 ◽  
Vol 23 (3) ◽  
pp. 444-449 ◽  
Author(s):  
A. Stanley Culpepper ◽  
Timothy L. Grey ◽  
Theodore M. Webster

Few herbicides are available for weed control in vegetable production systems using low-density polyethylene (LDPE) plastic mulch. With the elimination of methyl bromide for pest management and subsequent use of various alternative fumigants, the need for herbicides in vegetable production systems has increased. An experiment was conducted to evaluate tolerance of transplant summer squash and tomato to carfentrazone, flumioxazin, glyphosate, halosulfuron, or paraquat applied to the mulch prior to transplanting. After applying herbicides overtop of the mulch but prior to vegetable transplant, the mulch was either irrigated with 1.0 cm of water or not irrigated. Carfentrazone did not affect either crop regardless of irrigation. Irrigation readily removed glyphosate and paraquat from the mulch, as there was no adverse crop injury in these treatments. In the absence of irrigation, glyphosate and paraquat reduced squash diameter and tomato heights 18 to 34% at 3 wk after transplanting (WAT). Squash and tomato fruit numbers and fruit biomass (yield) were reduced 17 to 37%, and 25 to 33%, respectively. Halosulfuron reduced squash diameter and yield 71 to 74% and tomato heights and yields 16 to 37% when mulch was not irrigated prior to transplanting. After irrigating, halosulfuron had no affect on tomato, but reduced squash growth and yield 40 to 44%. Flumioxazin killed both crops when the mulch was not irrigated; and reduced squash yield 56% when irrigated. With irrigation, flumioxazin did not impact tomato fruit number, but did reduce tomato weight by 25%. These studies demonstrate the safety of carfentrazone, applied on mulch prior to transplanting either squash or tomato, regardless of irrigation, and also demonstrate the safety of glyphosate and paraquat if irrigated prior to transplanting. Conversely, flumioxazin should not be applied over mulch before transplanting either crop, regardless of irrigation. Halosulfuron application over mulch should be avoided before transplanting squash, regardless of irrigation, but can be applied prior to transplanting tomato if irrigated.


10.1897/03-14 ◽  
2004 ◽  
Vol 23 (3) ◽  
pp. 719 ◽  
Author(s):  
Pamela J. Rice ◽  
Jennifer A. Harman-Fetcho ◽  
John R. Teasdale ◽  
Ali M. Sadeghi ◽  
Laura L. McConnell ◽  
...  

2013 ◽  
Vol 30 (2) ◽  
pp. 143-153 ◽  
Author(s):  
Jessica R. Goldberger ◽  
Robert Emmet Jones ◽  
Carol A. Miles ◽  
Russell W. Wallace ◽  
Debra A. Inglis

AbstractCommercial farmers have been using polyethylene plastic mulch since the 1950s. Despite the affordability and effectiveness of polyethylene mulch, the disposal process is financially and environmentally costly. Biodegradable plastic mulches, an ecologically sustainable alternative to polyethylene mulch films, were introduced in the 1980s. Biodegradable plastic mulches can be tilled into the soil or composted at the end of the season, reducing the labor and environmental costs associated with plastic removal and disposal. However, research results are mixed as to the effectiveness, degradability and ease-of-use of biodegradable plastic mulches. In 2008–2012, researchers, funded by a USDA Specialty Crop Research Initiative grant, conducted surveys and focus groups in three different agricultural regions of the USA to better understand the barriers and bridges to the adoption of biodegradable plastic mulches for specialty crop production systems. Data on the experiences and views of specialty crop growers, agricultural extension agents, agricultural input suppliers, mulch manufacturers and other stakeholders showed that the major adoption barriers were insufficient knowledge, high cost and unpredictable breakdown. The major bridges to adoption were reduced waste, environmental benefits and interest in further learning. These findings are discussed with reference to the classic innovation diffusion model, specifically work on the innovation–decision process and the attributes of innovations. The study results can be used to guide the activities of those involved in the design, development and promotion of biodegradable plastic mulches for US specialty crop production systems.


Author(s):  
Greta G. Gramig ◽  
Samantha K. Hogstad ◽  
Patrick M. Carr

Abstract During 2015 and 2016, studies were conducted at Absaraka and Dickinson, North Dakota to evaluate the impacts of hemp (applied at 1156 m3 ha−1) and commercial paper mulch, as well as soil-applied biochar (applied at 11.25 m3 ha−1), on weed suppression and strawberry growth during the establishment year, and on weed suppression and strawberry yield during the production year, in a matted row production (MRP) system. During 2015, biochar influenced dry weed biomass only within the hemp mulch, with slightly more weed biomass associated with biochar application compared to zero biochar (3.1 vs 0.4 g m−2), suggesting that biochar may have increased weed germination and/or emergence from beneath hemp mulch. Biochar application also slightly increased soil pH, from 6.9 in non-amended soil to 7.0 in amended soil. Strawberry runner number during 2015 was greater in association with hemp or paper mulch compared to zero mulch (4.5 and 4.9 vs 2.4 runners plant −1, respectively). This result mirrored a similar differential in per berry mass across sites (7.6 and 7.4 vs 6.2 g berry −1 for hemp mulch, paper mulch and zero mulch, respectively). These results may be related to hemp and paper mulch reducing maximum soil temperatures during summer 2015. During the establishment year, both hemp and paper mulch suppressed weeds well compared to zero mulch, although at Absaraka hemp mulch provided slightly better weed suppression than paper mulch. During the production year, both mulches continued to suppress weeds compared to zero mulch at Dickinson. However, at Absaraka, only hemp mulch provided weed suppression compared to zero mulch, possibly because of faster paper degradation caused by greater numbers of large precipitation events and greater relative humidity at Absaraka compared to Dickinson. Weeds were removed from plots during 2015 to allow separation of weed suppression from other possible mulch impacts; therefore, yield data do not reveal striking differences among mulch treatments. Because previous research has demonstrated the impact of weed management during the establishment of strawberries in a matted row system, we concluded that hemp mulch may provide more durable weed suppression compared to paper mulch, which would increase strawberry yield protection in an MRP system. Material cost may be an issue for implementing hemp mulch, as hemp hurd cost was 25 times paper mulch at the application rates used in this study. However, hemp mulch could still be a beneficial option, especially for organic strawberry growers desiring a renewable and environmentally sound replacement for plastic mulch who are able to find affordable local sources of this material.


2011 ◽  
Vol 12 (2) ◽  
pp. 175 ◽  
Author(s):  
Antonio Martínez R. ◽  
Belem Avendaño R. ◽  
Ana Acosta M.

<p>La producción de hortalizas en la región Noroeste de México es una actividad económica relevante, lo cual se atribuye a factores naturales como el clima, calidad de los suelos y la cercanía al mercado de Estados Unidos de Norteamérica. Es evidente la creación de ventajas competitivas mediante la diferenciación del producto, por su calidad, a través de la aplicación de normas. La adopción de estándares es una práctica generalizada, sin embargo no está cuantificado el rol de las instituciones en estos procesos y su contribución a aumentar o inhibir los niveles de adopción de los mismos. El objetivo de este trabajo es analizar los factores que mas influyen en la implementación de grados y estándares en el sector hortícola en la región noroeste de México. Para la medición de la adopción se utilizó un modelo logit que permite determinar el efecto de las variables del entorno microeconómico que incide en la adopción de estándares. Se concluye que los cambios en los sistemas de producción mediante la aplicación de buenas prácticas agrícolas y las organizaciones de productores con actividades de capacitación, seguimiento y acompañamiento son lo que han contribuido en mayor forma al proceso de adopción de estándares por parte de las empresas productoras de hortalizas.</p><p> </p><p><strong>Determinants of the adoption of standards in the horticulture subsector of Northwestern Mexico.</strong></p><p>Vegetable production in the northwestern region of Mexico is an important economic activity; this is attributed to natural factors such as climate, soil quality, and proximity to the U.S. market. Clearly, the creation of competitive advantages gained by product differentiation, while maintaining quality, is extremely important and can be achieved through the application of standards. The adoption of standards is widespread; however, the role of institutions in these processes and their contribution to enhancing or inhibiting levels of implementation has not yet been quantified. The aim of this paper is to analyze the factors that most influence the execution of grades and standards in the horticultural industry in the northwest region of Mexico. Implementation levels were measured using a logit model that determined the effect of microenvironmental variables on them. The paper concludes that changes in production systems through the application of good agricultural practices and changes in organizations through training, monitoring, and support are what have helped companies that produce vegetables adopt and implement more standards.</p>


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