Plastic Cover Research Articles

Bagging of bunches and protected production in ‘Niagara Rosada’ vineyard

Vineyards of ‘Niagara Rosada’ have shown great productive potential. However, the grape production has been affected by factors related to climate adversities. Thus, this study aimed to evaluate the effect of plastic cover and bagging of bunches of ‘Niagara Rosada’, in Almirante Tamandaré, PR, Brazil. Plastic cover used was of polyethylene with 250 µm of thickness and bagging of the bunches with white non-woven fabric bags. The treatments were: without plastic cover over the vineyard and without bagging of bunches (control); with plastic cover over the vineyard and without bagging of bunches; with plastic cover over the vineyard and with bagging of bunches; and without plastic cover over the vineyard and with bagging of bunches. To determine the quality of the grapes, we evaluated weight of the bunches and berry, width and length of the bunch, number of berries per bunch, total soluble solids (SS), titratable acidity (TA), pH, and SS/TA ratio. In both crop seasons, treatments with the protected plants or bunches were superior in all evaluated traits. The plastic cover and bagging of bunches delayed maturation and improved the physical and chemical characteristics of bunches and berries of ‘Niagara Rosada’.

Dry needling trigger points around knee and hip joints improves function in patients with mild to moderate knee osteoarthritis

IntroductionDry needling may be an effective method to alleviate pain and improve range of motion. Controversial results have been found in previous studies using dry needling in knee problems. So, the aim of current study is to exert dry needling technique on unilateral muscles around the hip and knee joints and evaluate its effects on knee osteoarthritic patients. MethodFor this double-blind randomized clinical trial, 40 female patients with mild to moderate knee osteoarthritis (aged 45–70 years old) were recruited. They entered the study if they had any trigger points around the hip or knee joints of the examined side and randomized into two groups. Pain, sensitivity of trigger points, balance and function measured by visual analogue scale, algometer, Y-balance test, timed up and go, self-paced walk tests beside KOOS questionnaire respectively before and after intervention. The intervention group received 3 sessions of dry needling on marked trigger points while the sham group received sham treatment consisting of only the plastic cover of a needle. Both groups reexamined 2 weeks after primary evaluation. ResultsComparing results before and after implementing dry needling revealed significant improvements in all measured variables in treatment group whereas, pain and timed up and go increased and peak pain pressure decreased in sham group. Between group comparison revealed significant differences in all variables. ConclusionUsing 3 sessions of dry needling can increase functional activity, sensitivity and balance and decrease pain in patients with knee osteoarthritis in short term.

Drying a Standing Teak Tree using a Solar Kiln Drying Method

Understanding the rate of drying of standing trees dried by using a solar kiln drying method could help in predicting the change of moisture content in the tree over a period of drying time. The purpose of this study was to observe the change of moisture content profile in a standing tree during drying. A standing Tectona grandis tree was selected for the experiment with a diameter at breast height of 29 cm in a mixed-species plantation. The tree was girdled with 20 cm width at 20cm above ground. For the experiment, the tree was wrapped in a transparent plastic sheet and a black plastic sheet was installed at the bottom with an angle of 39 °C facing Southwest to maximize solar radiation, with the method being modified from the solar kiln method, which is known as a greenhouse type, with 2 layers of plastic cover. The black and white sheets were placed on the inner side for insulation and for collecting heat from the sun’s radiation, while the outer layer was transparent, which allowed radiation to propagate unhindered in the black sheet. In this study, a sensor for temperature and relative humidity (DHT22) was attached inside the wrapped plastic and the data recorded every 6 min. The results showed that drying a standing teak tree from an initial average moisture content of 105 % to a constant point of 60 % took 80 days under the maximum of the collected temperature of 46 °C inside the wrapped plastic; this finding confirmed that the predicted model of recharge and discharge curve was likely accurate.

Methane emissions from cattle manure during short-term storage with and without a plastic cover in different seasons

AbstractManure is a primary source of methane (CH4) emissions into the atmosphere. A large proportion of CH4 from manure is emitted during storage, but this varies with storage methods. In this research, we tested whether covering a manure heap with plastic reduces CH4 emission during a short-term composting process. A static chamber method was used to detect the CH4 emission rate and the change of the physicochemical properties of cattle manure which was stored either uncovered (treatment UNCOVERED) or covered with plastic (treatment COVERED) for 30-day periods during the four seasons? The dry matter content of the COVERED treatment was significantly less than the UNCOVERED treatment (P < 0.01), and the C/N ratio of the COVERED treatment significantly greater than the UNCOVERED treatment (P > 0.05) under high temperature. In the UNCOVERED treatment, average daily methane (CH4) emissions were in the order summer > spring > autumn > winter. CH4 emissions were positively correlated with the temperature (R2 = 0.52, P < 0.01). Compared to the UNCOVERED treatment, the daily average CH4 emission rates from COVERED treatment manure were less in the first 19 days of spring, 13 days of summer, 10 days of autumn and 30 days of winter. In summary, covering the manure pile with plastic reduces the evaporation of water during storage; and in winter, long-term covering with plastic film reduces the CH4 emissions during the storage of manure.

MUDAS DA PALMEIRA BURITI TEM BAIXA EXIGÊNCIA HÍDRICA EM VASOS COM SOLO

The swamp palm (Mauritia flexuosa L.f.) is a palm tree that occurs in the Brazilian Amazon, Pantanal and Cerrado biomes and occupies wetlands such as the Cerrado swamps. Because of this association and its high size, swamp palm has been used as an indicator of preserved areas. As it is still explored extractively, little has been investigated about its propagation. Seedlings of 90 days developed from seeds in cylindrical tubes (290 cm3) with substrate (composted pine bark) were prepared. An essay was carried out in a completely randomized design with five treatments, 10 repetitions and one seedling per plot (pot). The maximum water retention capacity (MWRC) of a red dystrophic oxisol, with 20% clay, was estimated in a 12-liter pot. The sifted soil was incubated with lime for 30 days with irrigation for 60% of the MWRC and fertilized with N, P, K, S and B. The treatments were flood, 100%, 75%, 50% and 25% of MWRC. The pots were kept in a greenhouse with plastic cover and irrigated daily to replace the water after weighing. Biometric variables were evaluated after four months: stem diameter, shoot length, fresh and dry mass, shoot root ratio, Dickson quality index and water content. Swamp palms irrigated with 25% of MWRC presented the lowest stem diameter, fresh and dry mass, Dickson quality index and water content. The supply of water with 50% of the MWRC allowed swamp palm seedlings to grow as well as those that received more water: 75, 100% of the MWRC or flood. In conclusion, the swamp palm seedlings (M. flexuosa) developed properly with daily irrigations with 50% of MWRC in 12-liter pot with soil.

Assessment of the Adoption of Organic and Conventional Farming Methods in Kisii Central Sub-County, Western Kenya

This study sought to determine the extent of adoption of various organic and conventional crop and soil management practices in the farms. Ten farms were sampled at an equidistance of one kilometre along a transect laid across each of the eight randomly selected sub-locations in the sub county. A sample size of 80 farms was randomly selected from the Sub-County. The eighty farms were regrouped into two; Organic and conventional farms. A survey of the crop management practises was carried out and the observed methods recorded down. The data collected was analyzed using the Statistical paired t test and descriptive statistics. Use of pesticides recorded the highest percentages (60%) in conventional methods while mulching recorded relatively high percentage (42%) in organic methods. Use of plastic cover recorded the lowest percentage of 4% in conventional methods while vermin-compositing was not embraced in conventional methods. Conventional methods were 3.33 points higher than organic (95% CI [-9.37596, 16.04263]). Conventional and Organic farming methods were strongly and negatively correlated (r = -0.069, p > 0.05). However, there was no statistical significant difference between conventional and organic methods (t5 = 0.674, p > 0.05), [Appendix 1(iii)]. The knowledge obtained will be useful to the farmers and other participants globally to improve crop productivity. The information collected will also enable farmers seek for unconventional ways to alleviate the problem of heavy usage of agrochemicals in order to embrace organic farming for the long run sustainability of the agricultural sector.

Papaya (Carica papaya L.) Phenology under Different Agronomic Conditions in the Subtropics

European consumers have perceived that papaya fruits produced in subtropical areas (the Canary Islands and Mediterranean regions) do not have the desired quality at certain periods of the year. Thus, the development of technical and management strategies to optimize the yield and the quality of the fruit requires crop phenology studies. Meteorological variables (air temperature, relative humidity, and photosynthetically active radiation) and morphological characteristics (plant height, leaf emission rate, and leaf area) were recorded throughout the crop cycle. All the leaves and fruits were labeled in their anthesis week to calculate the source–sink ratio and to study the development and quality of the fruits. Data were collected in three commercial orchards representing two different types of systems, greenhouse and screenhouse, and two different regions: two plastic cover greenhouses located in the south (SP) and in the north (NP) of Tenerife, and one 40-mesh net screenhouse in the north of the island (NN). The selection of these cultivation systems and locations was made deliberately, so that the ambient variables within these crop protection structures were different throughout the cultivation cycle in order to better fit the model construction. The results suggested that in order to maintain good fruit quality, better environmental control is necessary inside the greenhouses and the screenhouse. Monitoring variables such as the growing degree days, the photosynthetically active radiation, and the number of fruits per plant leaf area ratio provided useful information for papaya production management in the Canary Islands and other subtropical areas, allowing farmers to predict harvest and fruit quality.

High-Throughput Synthesis of Liposome Using an Injection-Molded Plastic Micro-Fluidic Device.

For mass production of liposomes, we designed a plastic micro-channel device on the basis of 5 μm of micro-nozzle array forming T-junction with 100 μm depth of micro-channel. A micro-channel unit for synthesizing liposomes consisted of two micro-nozzle arrays for mixing two solutions as well as delivery and recovery channels for supplying solutions and collecting liposome suspension. The number of micro-nozzles was approximately 2400 for a micro-channel unit, and seven units were applied independently on a micro-channel plate. The plastic micro-channel plate was injection-molded for mass production using a micro-channel stamper previously fabricated by UV lithography and nickel electroforming process. A plastic cover plate with seven pairs of inlet and outlet ports was machined by mechanical milling and drilling and was assembled with a micro-channel plate using a holder to form a liposome synthesizing device. Flow and mixing of solutions in the micro-channels were tested using colored water to check the micro-fluidic characteristics of the device. Finally, a L-α-phosphatidylcholine (SOY PC) liposome was synthesized using EtOH solution of SOY PC (95%) and saline (0.85% NaOH solution) to find that the liposomes were around 230 and 260 nm in diameter, depending on the flow rate of the lipid solution.

Optimize of emergence speed and productivity of potato (Solanum tuberosum L.) by using different cover treatments

This study was conducted at Tikrit University, Iraq during the spring season of 2019 to investigate the effect of different cover treatments 1. Plastic cover for 45 days from planting. 2. Plastic cover for 45 days from planting, then cover with saran only 45 days before harvest. 3. Cover with saran only for 45 days before harvesting. 4. Control treatment (without cover) on speed emergence, growth and yield of two potato cultivars (Montreal an Laperla). The obtained data indicated that the highest values for tuber length, tuber weight and tuber hardness were achieved for Laperla. However, Plastic cover gave significantly increment in speed emergence and plant height reach up 37% and 33%, respectively. Whereas, Saran cover showed significantly increment in total yield and percentage of marketable yield reach up 15.57% and 11.60%, respectively. In a view of the interactions between cultivars and the other treatments, saran interacted with Laperla reflected the highest increment in total yield per hectare was 31%, compared to interaction treatment between same cultivar but without cover. In general, results declared that using saran treatment in top side only, during formation of tuber, for Laperla cultivar led to the highest productivity of potato.

Dipping-Press Coating Method for Retaining Transparency and Imparting Hydrophobicity Regardless of Plastic Substrate Type.

Plastics are used in cover substrates for billboards, windows, large LED signboards, lighting devices, and solar panels because they are transparent and can be colored and shaped as desired. However, when plastic cover substrates installed in outdoor environments are constantly exposed to harsh conditions such as snow, rain, dust, and wind, their transparency deteriorates owing to watermarks and dust contamination. Herein, we investigated a simple dipping-press coating method that can impart hydrophobicity while maintaining the transparency, regardless of the plastic substrate type. A highly transparent and hydrophobic coating film was formed on a plastic substrate by a two-step process, as follows: (1) application of a polydimethylsiloxane–octadecylamine coating by a dipping process, and (2) embedding (1H,1H,2H,2H-heptadecafluorodec-1-yl) phosphonic acid–aluminum oxide nanoparticles by a thermal press process. The plastic substrates on which the highly transparent and hydrophobic coating film was formed showed 150° or higher hydrophobicity and 80% or higher visible light transparency. The coating method proposed herein can easily impart hydrophobicity and is compatible with any plastic substrate that must maintain prolonged transparency without contamination when exposed to adverse conditions.

Maintaining active safety performance through appropriate vehicle bumper refinishing: Case study for Korean minor damage repair standards

The Korean government has established “minor damage repair standards” that require repair without replacement when vehicle bumpers can be repaired to reduce plastic bumper waste. However, when blind spot detection and lane change assist systems, active safety systems, are installed, there is a controversy over whether the standards can be applied to restore the minor damage bumper covers because the short-range radar sensor for them is located inside each corner of the rear bumper. Therefore, it is necessary to identify the difference between original and repair conditions to confirm the repair methods that can meet the government’s standards while maintaining the safety performance of the systems. The experiments were designed two sectors, most vehicle bumper cover repair methods were produced as test specimens which are used for static tests to compare with the new vehicle state, and based on the results, specimens needed field confirmation were prepared and dynamic tests were conducted. The microscopic performance difference of the safety systems according to the refinishing was determined by analyzing the dynamic test results using null-hypothesis significance testing and analysis of variance methods. The results of the tests showed that applying a filler to form the bumper surface does not cause performance problems if the radar signal transmission area of 10 m2is avoided. In the case of paintwork on the radar signal area, two or three layers of paint did not show any difference from the manufacturer’s bumper, therefore paint layer scratches can be refinished up to twice. However, if metal-colored paint layers are three as a result of paintwork twice, the maximum detection angle performance is adversely affected. Through this study, new experimental methods were suggested for identifying the safety performance of advanced driver assistance systems when various repair methods are applied to the plastic bumper cover.

Passive distributed temperature sensing (PDTS)-based moisture content estimation in agricultural soils under different vegetative canopies

A semi-empirical Boltzmann model is proposed to describe the relationship between the rate of temperature increase and soil moisture content, which can replace the existing complicated numerical iterative algorithm. The proposed method greatly simplifies the calculation process and improves the applicability of the passive distributed temperature sensing (PDTS) technology. A field test was performed in the Loess Plateau of China to validate the capability of this method. The field site has four typical land cover conditions: bare soil (G1), plastic mulch (G2), plastic mulch cover with potatoes (G3), and plastic much cover with maize (G4). The monitoring results indicate that for G1 and G2, the relationship between soil moisture content and the rate of temperature increase can be quantitatively described by the Boltzmann model with a root-mean-square error of 0.024 m3/m3. For G3, a linear relationship is found. In contrast, the PDTS technology is not applicable for G4 because a constant ground surface heat power from solar radiation and small air temperature fluctuations are preconditions of PDTS. If the coefficient of determination (R2) for fitting rate of temperature increase is larger than 0.9, the ground surface heat power by solar radiation can be considered as a constant.

Wheat Yield in a Tolerant Winter Wheat Line Infested by Hessian Fly (<i>Mayetiola destructor</i>)

The Hessian fly, Mayetiola destructor, is a harmful pest of wheat (Triticum aestivum). Pioneer variety 25R78 is putatively tolerant, meaning that the plant can survive successful Hessian fly infestation with reduced growth effects. To understand if Hessian fly-tolerance in wheat results in reduced yield effects and to analyze the economic feasibility of tolerant wheat as a Hessian fly control method, this study focused on analyzing the effect of infestation on tolerant wheat yield. This study analyzed tolerant Pioneer variety 25R78, resistant Pioneer brand variety 25R32, and susceptible Pioneer brand variety 25R47 through harvest. Treated plants were infested using a plastic cover and allowing 1 - 2 female flies to lay eggs for two hours. We measured head, fertile head number and tiller number. Seeds were analyzed by measuring total seed number and weight, as well as average seed number and weight. Tolerant and resistant plants showed no significant effects on yield in comparison to susceptible wheat. The infested tolerant plants were comparable in yield to infested resistant plants. Therefore, we propose that tolerance incorporated into wheat varieties will lower selection pressure on Hessian fly populations and increase the durability of these wheat lines.

Potential of soil cover with plastic film for the setting of sweet orange orchards

Abstract Soil cover with plastic film is a practice used to optimize the agronomic performance of different crops, but its behavior in the citrus growing conditions of Brazil remains unknown. Five experiments in commercial orchards located in the state of São Paulo, in rainfed or irrigated systems, were carried out to evaluate the effect of soil cover with plastic film (white/black or silver/black color) on the vegetative growth and initial production of sweet orange trees up to 3.5 years after planting. In each location and experiment, completely randomized design was used, with four to ten replicates and five to twelve useful trees per plot. Considering the set of results, soil cover with plastic film increased the average canopy volume by 27% and the average production per tree by 33% compared to control trees without plastic cover. The positive effect of plastic cover was observed until the third year of its application, gradually decreasing with its degradation. In general, greater relative increases were observed in variables evaluated with the use of plastic cover in rainfed experiments than irrigated ones, while the effect of white/black either silver/black films was similar.

White Plastic and Deficit Irrigation Improve Pomegranate Production

ABSTRACT Developing improved water management strategies and on-farm cultural practices are important in reducing pomegranate (Punica granatum L. cv Wonderful) production costs. A pomegranate orchard established in 2010 was irrigated at water replacement rates of 35, 50 and 100% of crop evapotranspiration from 2013 to 2016. A durable white plastic tarp was installed in one half of each water replacement plot to evaluate the added benefits to soil moisture retention, weed control, and plant growth and yield. Edaphic orchard floor conditions such as light reflectance into the lower tree canopy, mid-day soil surface temperature, soil water content, and average daily soil temperatures were moderated or improved by the plastic cover. Phenological changes such as leaf greenness, trunk basal suckering, and trunk diameter were generally enhanced by increased water application rates and plastic use. Marketable and total fruit yields increased by an average of 20 to 29% from 2013 to 2016 with the use of plastic cover compared to bare soil. Total fruit yield increased linearly with increasing water replacement rates. Neither the white plastic nor irrigation rates improved external fruit color. Fruit raw product attributes were little changed by treatments. The research clearly demonstrated the benefit of plastic cover on improving pomegranate production.

An Assessment of Iodine Deficiency in School Age Children in ChikkaballapuraDistrict of Karnataka State – A Cross Sectional Study

Background Iodine deficiency has been one among the nutrition problems in India. The deficiency of this micro-nutrient leads to a wide spectrum of disorders from the intrauterine life extending through childhood and adult life with serious health and social implications. Lack of iodine in the diet leads to visible and invisible spectrum of health consequences collectively called Iodine Deficiency Disorders IDDs. Globally India has the been the country with a very large number of children born vulnerable to iodine-deficiency. In India IDD has been identified as a public health problem with 200 million people at risk. Iodine Deficiency Disorders are among the easiest and least expensive of all nutrient disorders to prevent. The addition of a small constant amount of iodine to the salt that people consume daily is all that is needed. Objectives The study aimed to assess the prevalence of Goiter in children aged 6-12 years to determine the median Urinary Iodine Excretion UIE among these children and the salt iodine levels at consumer level in District of Chikkaballapura.Methodology The school officials were informed to request all the children aged 6-12 years to bring salt samples from their residence 3-4 teaspoon of salt in a plastic cover on the day of survey. On the day of survey 90 children 45 boys and 45 girls aged 6-12 years were selected by disproportionate stratified random sampling class studying as the stratum for clinical examination of goiter by doctors.Results A total of 2774 children from 30 schools were screened for thyroid enlargement. A total 368 urine samples were collected of which only 350 samples were analysed for urinary iodine concentration. A total of 18 samples were discarded due to low quantity sediments or turbidity. Salts from 650 households were titrated for iodine content. The overall prevalence of goiter was 8.1. Among the study participants 315 90.9 had normal UIE gt100 microgL. Iodine deficiency was observed in 2.3 study participants.Conclusion The population in Chikkaballapura at present have iodine levels at par to the recommended but continuous efforts from government and non-government organizations are needed to sustain the availability of iodized salt to keep iodine levels at optimum level.

An Assessment of Iodine Deficiency in School Age Children in Chitradurga District of Karnataka State – A Cross-Sectional Study

Background Iodine deficiency is one of the important nutrition problems in India. The deficiency of this micro-nutrient leads to a wide spectrum of disorders from the intrauterine life extending through childhood and adult life with serious health and social implications. Lack of Iodine in the diet leads to visible and invisible spectrum of health consequences collectively called Iodine Deficiency Disorders IDDs. Globally India has the largest number of children born vulnerable to iodine-deficiency. In India IDD has been identified as a public health problem with 200 million people at risk. Iodine Deficiency Disorders are among the easiest and least expensive of all nutrient disorders to prevent. The addition of a small constant amount of iodine to the salt that people consume daily is all that is needed.Objectives The study aimed to assess the prevalence of Goitre in children aged 6-12 years to determine the median Urinary Iodine Excretion among these children and the salt iodine level at consumer level.Methodology The school authorities were informed to request all the children aged 6-12 years to bring salt samples from their residence 3-4 teaspoon of salt in a plastic cover on the day of survey. On the day of survey 90 children 45 boys and 45 girls aged 6-12 years were selected by disproportionate stratified random sampling class studying as the stratum for clinical examination of goitre by doctors.Results A total of 2900 children from 30 schools were screened for thyroid enlargement. A total 359 Urine samples were collected of which only 296 were analysed for urinary iodine concentration. A total of 63 samples discarded due to low quantity sediments or turbidity. Salts from 650 households were titrated for iodine content.The overall prevalence of goitre was 10.3. 269 90.9 of the study participants had normal UIE gt100 microgL. 27 9.1 study participants had iodine deficiency.Conclusion The population in Chitradurga at present have iodine nutrition at par to the recommended but continuous efforts from governmental and non-governmental organizations are needed to sustain the availability of iodized salt to keep iodine nutrition at optimum level.

Stainless-Core Submersible Permanent Magnet Synchronous Machine

A fully submersible permanent magnet synchronous machine (PMSM) is introduced in this paper. Underwater operation requires that the machine parts have to be resistant to corrosion, and the electrically conducting parts need to be properly insulated from water. The machine under study consists of a rotor-surface permanent magnet rotor, protected by a glass-fiber-reinforced plastic (GFRP) cover, and a fully stainless stator. The novelty of the machine is found in the design and special materials used in the manufacture. The stator core is made of ferritic stainless steel laminations, and the selected winding material is polyvinyl chloride (PVC) insulated copper wire. An extra low-speed, stainless-core submersible PMSM was constructed and tested. To simplify the machine construction, a tooth-coil single-layer winding was adopted. An asymmetric stator design was selected to enhance the machine performance. The performance of the 1.7 kW, 80 r/min machine was analyzed by finite element analysis (FEA) and validated by experimental tests, where despite a very low rotational speed, 74% efficiency was reached at the target load point. The PMSM was found to be fully functional for the application.

Bedwetting

Patient Education| 2021 Bedwetting Connected Content Translation: Orinar o mojar la cama: (Bedwetting) Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation Bedwetting. Pediatric Patient Education 2021; 10.1542/peo_document377 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search nav search search input Search input auto suggest search filter All AAP SitesAll PublicationsPediatric Patient Education Search Advanced Search Subjects: Newborns, Infants, and Toddlers Topics: nocturnal enuresis Bedwetting usually goes away as your child gets older. Talk with the doctor if you or your child are worried about bedwetting. These tips can help in the meantime. Protect the bed. Put a plastic cover under the sheets.Have your child use the toilet just before bedtime.Don't give your child soda pop (especially cola) before bed.Wake your child up to use the toilet 1 or 2 hours after going to sleep. This will help him or her stay dry through the night.Reward your child for dry nights. Try a star chart. (See “Using a Star Chart” on the right.) Do not punish your child for wet nights.Let your child help change wet sheets and covers. But don't force your child to do this. If you do, your child will think he or she is being... © 20082008 American Academy of Pediatrics. All rights reserved. You do not currently have access to this content.

PESO Y CARACTERES CUANTITATIVOS DE LA CALIDAD EN FRUTOS DE PLANTAS M1 DE Physalis peruviana L. PROVENIENTES DE SEMILLAS IRRADIADAS CON 60Co

Physalis peruviana L. es originaria de los Andes y su fruto se consume fresco por su contenido de vitaminas y propiedades medicinales. El crecimiento de las plantas de esta especie es heterogéneo, pues tiene mejoramiento genético limitado porque es una especie silvestre. Los mutágenos físicos y químicos aplicados a semillas u órganos para propagación pueden generar variedades nuevas con cambios en morfología, rendimiento, adaptabilidad y resistencia. El objetivo de la presente investigación fue determinar el efecto de la irradiación de la semilla en los caracteres de la calidad del fruto de las plantas M1 de Physalis peruviana L., y se hipotetiza que al menos una dosis de la irradiación en plantas M1 de uchuva modifica favorablemente los caracteres de calidad de frutos. El estudio se realizó en invernadero con cubierta de plástico UVII-720, de agosto de 2015 a febrero de 2016. Los tratamientos fueron 14 dosis de rayos gamma 60Co (0 a 275 Gy) y el diseño experimental fue completamente al azar con seis repeticiones. La radiación redujo de 3 a 32% el peso del fruto con cáliz y de 3 a 29% el peso sin cáliz. La dulzura de los frutos se redujo con dosis mayores a 100 Gy, con excepción de 200 Gy; en contraste, la firmeza aumentó de 1 a 9% con las dosis de 100 y 75 Gy. El tamaño y vida de anaquel del fruto no se afectaron. La irradiación de semillas con rayos gamma 60Co altera negativamente el peso y algunas variables de la calidad del fruto de las plantas mutantes de P. peruviana.