Horticultura Brasileira最新文献

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Morphological characters contributing to yield increase of potato cultivars in Brazil 巴西马铃薯品种增产的形态特征研究
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-08-25 DOI: 10.1590/s0102-0536-2023-e274810
J. Kawakami, Vlandiney Eschemback, Cinthia K de Matos, P. Melo
{"title":"Morphological characters contributing to yield increase of potato cultivars in Brazil","authors":"J. Kawakami, Vlandiney Eschemback, Cinthia K de Matos, P. Melo","doi":"10.1590/s0102-0536-2023-e274810","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e274810","url":null,"abstract":"ABSTRACT A previous study revealed that modern potato cultivars used in Brazil have higher commercial tuber yield than old cultivars. The objective of the present study was to clarify which morphological characters influence the yield gain of modern cultivars. Two field experiments were performed in Brazil: in Guarapuava-PR and Brasilia-DF. The treatments consisted of six cultivars, classified according to origin and year of release: Bintje (European, 1910), Baronesa (Brazilian, 1955), Monalisa (European, 1982), Agata (European, 1990), Catucha (Brazilian, 1995) and BRS Clara (Brazilian, 2010). These were the main cultivars used in southern Brazil in the last 65 years and represent 100 years of breeding. A randomized complete block design with six treatments and four replications was used. The following plant morphological characters were evaluated at four growth stages (the beginning of plant development, the beginning of tuberization, maximum shoot growth and tuber bulking stages): leaf area index, specific leaf area, number of main stems, initiated and bulked tubers. At 15 days after emergence, modern cultivars have higher leaf area index and bulked tubers compared to older cultivars. Also, a larger number of mainstems and smaller specific leaf area were observed in modern cultivars. A high leaf area index at the beginning of the growing development combined with a large number of bulked tubers contributed to the increase of the yield potential of modern cultivars.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251969","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: 0
Agronomic efficiency of fermented composts in organic fertilization management of butterhead lettuce and green leaf lettuce 发酵堆肥在油头生菜和绿叶生菜有机肥管理中的农艺效益
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-08-25 DOI: 10.1590/s0102-0536-2023-e2609
J. B. D. Souza Júnior, J. G. Guerra, J. M. Goulart, L. A. D. Silva, J. A. Espindola, E. Araújo
{"title":"Agronomic efficiency of fermented composts in organic fertilization management of butterhead lettuce and green leaf lettuce","authors":"J. B. D. Souza Júnior, J. G. Guerra, J. M. Goulart, L. A. D. Silva, J. A. Espindola, E. Araújo","doi":"10.1590/s0102-0536-2023-e2609","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2609","url":null,"abstract":"ABSTRACT This work aimed to evaluate the agronomic efficiency of fermented composts formulated with brewery waste (RC) with castor bean bran (FM) or Gliricidia sepium leaf bran (FG) in the fertilization of butterhead lettuce and green leaf lettuce grown in succession. The experimental design was in randomized blocks in a 2x5 factorial scheme, consisting of two fermented composts and five N doses (0, 50, 100, 200, and 400 kg/ha). The composts were formulated by combining 60 RC+40 FM and 60 RC+40 FG considering the % of dry matter after moisture correction. We verified that the phytotechnical performance of the butterhead lettuce, in relation to fertilization, is influenced by the applied dose; no difference regarding the composts was noticed, though. The doses of 272.2 and 248.71 kg/ha of N enabled the maximum yield of 78.01 and 87.79 t/ha, respectively, 60 RC+40 FM and 60 RC+40 FG. The fermented compost containing FM, in the range of the stipulated doses, showed a residual effect on the main phytotechnical traits of the green leaf lettuce, and the magnitude of the effect is directly proportional to the dose applied in the previous crop.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"45 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251636","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: 0
Flavor and color: ‘IAC 134 AL01’, the Campinas Agronomic Institute’s first orange-colored pulp sweet potato cultivar 味道和颜色:“IAC 134 AL01”,坎皮纳斯农艺研究所的第一个橙色果肉甘薯品种
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-08-25 DOI: 10.1590/s0102-0536-2023-e2622
Valdemir Antonio Peressin, J. C. Feltran, A. B. Rós, L. Bernacci, F. A. Piotto, T. L. Factor, Sebastião de Lima Junior, E. G. Fabri
{"title":"Flavor and color: ‘IAC 134 AL01’, the Campinas Agronomic Institute’s first orange-colored pulp sweet potato cultivar","authors":"Valdemir Antonio Peressin, J. C. Feltran, A. B. Rós, L. Bernacci, F. A. Piotto, T. L. Factor, Sebastião de Lima Junior, E. G. Fabri","doi":"10.1590/s0102-0536-2023-e2622","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2622","url":null,"abstract":"ABSTRACT The sweet potato cultivar ‘IAC 134 AL01’ has tuberous roots with high β-carotene content, with the fresh pulp having an intermediate orange colour (based on international descriptors for the crop), which turns bright orange after cooking, and a mildly sweet taste. These roots have a long-irregular shape, red skin and are of medium size, weighing, on average, 300 g and measuring 14 x 6 cm. The first biofortified sweet potato cultivar of the Campinas Agronomic Institute reaches an average yield of 43.9 t/ha and is recommended for planting in the state of São Paulo to supply the domestic market and for export.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"57 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251830","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: 0
No-till cabbage production in different cover crops and phosphorus sources in the Brazilian Cerrado 巴西塞拉多不同覆盖作物和磷源的免耕卷心菜产量
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-08-11 DOI: 10.1590/s0102-0536-2023-e2550
G. F. Alves, J. Torres, H. C. D. O. Charlo, Valdeci Orioli Júnior, A. Loss, A. C. Barreto
{"title":"No-till cabbage production in different cover crops and phosphorus sources in the Brazilian Cerrado","authors":"G. F. Alves, J. Torres, H. C. D. O. Charlo, Valdeci Orioli Júnior, A. Loss, A. C. Barreto","doi":"10.1590/s0102-0536-2023-e2550","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2550","url":null,"abstract":"ABSTRACT No-till planting and the use of organomineral fertilizers are crop management practices that increase soil organic matter, thereby mitigating leaching and cycling a considerable amount of nutrients, with the potential to improve crop yield. This study aimed to assess the agronomic performance of cabbage grown under a no-till system, using different cover crops and phosphorus sources. A randomized block design was used, with the main plot consisting of eight split plots for different cover crop treatments: 1) Signal grass (SG); 2) Sunn hemp (SH); 3) Pearl millet (PM); 4) SG+SH; 5) SG+PM; 6) SH+PM; 7) SG+SH+PM; 8) conventional tillage (soil preparation with no cover crop), and phosphorus (P) sources in the sub-plots: 1) mineral fertilizer (FM); 2) organomineral fertilizer (OF); 3) no P, with four repetitions. The following characteristics were assessed: cover crop fresh (FW) and dry weight (DW) (t/ha), residue decomposition and nutrient cycling; and cabbage head FW and DW (HFW and HDW) (g/plant) and yield (YLD) (t/ha). The highest FW and DW were recorded in the intercropped cover plant treatments; PM+SH and SG+SH residue exhibited the highest decomposition rate and P cycling into the soil. The highest cabbage HFW and YLD occurred in the SG+SH treatment, regardless of the fertilizer used. The MF used as P source produced a greater cabbage YLD when grown in PM residue. Under conventional tillage, YLD was higher when OF was used as P source.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251123","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: 0
Evaluation of summer carrot cultivars in bed and ridge systems 床型和垄型夏胡萝卜栽培品种评价
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-08-11 DOI: 10.1590/s0102-0536-2023-e2553
Agnaldo DF de Carvalho, G. Silva, Samuel F Guedes, Ester de C Pereira, Guilherme P Martins, C. Magalhães
{"title":"Evaluation of summer carrot cultivars in bed and ridge systems","authors":"Agnaldo DF de Carvalho, G. Silva, Samuel F Guedes, Ester de C Pereira, Guilherme P Martins, C. Magalhães","doi":"10.1590/s0102-0536-2023-e2553","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2553","url":null,"abstract":"ABSTRACT In Brazil, carrots are usually grown in beds 30 cm heigh and 1 to 1.8 width. Although widely used, these beds present problems regarding cultural practices and disease management, especially in spring/summer seeding. The aim of this study was to compare the agronomic performance of carrot cultivars in summer cultivation in bed and ridge. Ten carrot cultivars were evaluated in two experiments in strips (bed and ridge), in a randomized complete block design with three replications. Seeds were sown on November 23, 2021, in Brasília-DF. At 90 days, evaluation of foliar diseases was performed, and at 100 days, evaluation of characteristics related to root yield was carried out. Total production was higher in bed, but there was no difference for commercial production in the two cultivation methods. The ridge favored root development, providing a greater mean root mass. Cultivation in ridge did not reduce the incidence of foliar diseases in carrots, but proved to be an alternative for commercial production of summer carrots.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"307 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251128","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: 0
Application of natural coating improves the conservation of cut carnation flower 天然涂层的应用提高了康乃馨切花的保存性
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-08-11 DOI: 10.1590/s0102-0536-2023-e2563
J. S. Pinzetta Junior, Claudia FM Mattiuz, Thaís A Sillmann, Bene Mauricio Baglioni Junior, Carlos Inestroza-Lizardo, B. Mattiuz
{"title":"Application of natural coating improves the conservation of cut carnation flower","authors":"J. S. Pinzetta Junior, Claudia FM Mattiuz, Thaís A Sillmann, Bene Mauricio Baglioni Junior, Carlos Inestroza-Lizardo, B. Mattiuz","doi":"10.1590/s0102-0536-2023-e2563","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2563","url":null,"abstract":"ABSTRACT Carnation (Dianthus caryophyllus) is one of the most important and popular cut flowers for the ornamental industry. However, it has a short decorative life, being water loss one of the main challenges. Water loss leads the petals to wither with a consequent loss of its commercial value. One of the techniques used in postharvest technology is the use of coatings and films, which interfere in gas exchange and water loss, maintaining the quality of cut flowers. The current study investigated the effects of a natural coating based on hydroxypropyl methylcellulose (HPMC) at 5% and beeswax (BW) in cut carnation flower cv. Delphi stored at 20°C and 70% RH. The application of HPMC + 40% BW treatment in flowers resulted in 30% higher fresh weight, 17% higher relative water content (RWC) and 80% higher flower opening compared to untreated flowers. The shelf life of untreated and HPMC + 40% BW carnations was 7 and 12 days, respectively, allowing a shelf-life extension of up to five days.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251177","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: 0
Management of green manure and organic fertilization with fermented compost fertilizer in agroecological cultivation of American broccoli 美国花椰菜农业生态栽培中绿肥与发酵堆肥有机肥的管理
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-08-11 DOI: 10.1590/s0102-0536-2023-e2599
José Sávio M Vieira Filho, J. G. Guerra, J. M. Goulart, E. Araújo, J. A. Espindola, Janaína RC Rouws
{"title":"Management of green manure and organic fertilization with fermented compost fertilizer in agroecological cultivation of American broccoli","authors":"José Sávio M Vieira Filho, J. G. Guerra, J. M. Goulart, E. Araújo, J. A. Espindola, Janaína RC Rouws","doi":"10.1590/s0102-0536-2023-e2599","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2599","url":null,"abstract":"ABSTRACT This work aimed to evaluate the phytotechnical performance of the succession involving pre-croppings of maize and Mucuna pruriens (velvet bean) or the intercropping of these species in the agroecological cultivation of broccoli in the presence and absence of fermented compost fertilization. The experimental design was in randomized blocks in a factorial scheme 2 (maize monoculture or intercropped with velvet bean) x 2 (absence and presence of fermented compost fertilization) + 1 (velvet bean monoculture and without fertilization). After cutting the maize and velvet bean biomass, the broccoli seedlings were transplanted. In this stage, the design was in randomized blocks in a 3-factorial scheme (maize monoculture; maize intercropped with velvet bean; velvet bean monoculture) x 2 (presence and absence of fermented compost fertilization). The authors concluded that when the velvet bean was introduced into maize cultivation system no negatively interference was noticed concerning to phytotechnical components of baby corn, and it even allows an additional of 3.46 and 7.75 t/ha of fabaceous phytomass, respectively, in the first and second year. In the absence of fertilization, phytomasses of the intercroppings provided broccoli productivity of 12.87 t/ha, which represents an increase of 43.73% when compared to maize monoculture in the second year. An effect of fertilization with the fermented compost on broccoli cultivation under these study conditions was verified, providing a greater accumulation of N in the inflorescences in the first year and maximum productivity of 12.19 and 14.32 t/ha, respectively, first and second years.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251334","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: 0
Allometric model for estimating leaf area of ora-pro-nobis genotypes 估算ora-pro-nobis基因型叶面积的异速生长模型
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-08-11 DOI: 10.1590/s0102-0536-2023-e2601
M. O. Cabral, F. D. Oliveira, G. S. Fialho, Joab LF Pedrosa, A. G. Teixeira, L. Dalvi
{"title":"Allometric model for estimating leaf area of ora-pro-nobis genotypes","authors":"M. O. Cabral, F. D. Oliveira, G. S. Fialho, Joab LF Pedrosa, A. G. Teixeira, L. Dalvi","doi":"10.1590/s0102-0536-2023-e2601","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2601","url":null,"abstract":"ABSTRACT The planting of unconventional vegetables has increased in Brazil. This is mainly due to the demand of nutritionally rich foods grown in sustainable crops. In this scenario, ora-pro-nobis stands out, as, although being part of the meal of large part of the Brazilian population, it has been cultivated despite the lack of scientific knowledge. Thus, this study aimed to adjust a leaf area estimation model for ora-pro-nobis, using the measurements of the leaves. For the model adjustment and validation, 4000 leaves were collected in four different genotypes, being 1000 in each of them. The regression models were adjusted using 2000 independent and random observations, using 500 leaves per genotype. Thus, the observed leaf area was studied as a linear function of the dimensions of the leaf blade: length (L), width (W) and product (LW). The remaining 2000 observations, also 500 per separate genotype, were used only in the statistical validation study. The adjusted allometric model based on the product (LW) proved to be precise and accurate for estimating the leaf area of ora-pro-nobis, being applicable to any of the four genotypes analyzed regardless of the leaf size: L A ^ L W = 0.9294 + 0.6815 x L W.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251390","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: 0
Edible coating with microalgae and modified atmosphere packaging for post-harvest conservation of tomatoes 番茄采后保鲜用微藻可食性包衣及气调包装
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-06-30 DOI: 10.1590/s0102-0536-2023-e2503
L. C. D. Santos, Idelvan José da Silva, Arthur Vinicius D dos Santos, E. P. D. R. Sousa, Agda MF de Oliveira, V. Sousa, Albert EM de M Teodosio, E. A. Onias, Railene Hcr Araújo
{"title":"Edible coating with microalgae and modified atmosphere packaging for post-harvest conservation of tomatoes","authors":"L. C. D. Santos, Idelvan José da Silva, Arthur Vinicius D dos Santos, E. P. D. R. Sousa, Agda MF de Oliveira, V. Sousa, Albert EM de M Teodosio, E. A. Onias, Railene Hcr Araújo","doi":"10.1590/s0102-0536-2023-e2503","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2503","url":null,"abstract":"ABSTRACT Tomato fruits are highly perishable. In this sense, adopting techniques to maintain and extend its shelf life is essential. Recent studies have used microalgae as an edible coating for fruit, as it is a nutrient-rich alternative and reduces fruit mass loss and respiration, delaying senescence. The aim of this study was to evaluate the application of microalgae-based coatings with or without the use of modified atmosphere packaging, polyvinyl chloride (PVC), in post-harvest tomato conservation. The design used was completely randomized, in a 4x2 factorial arrangement, with four coatings (no coating, coating composed of Spirulina platensis sp., Chlorella sp. and Scenedesmus sp.) and two conditions (with and without PVC), totalizing 8 treatments, with four replicates, consisting of one fruit each. Stored for 7 days at 10±2ºC and 55±5% UR and evaluated at harvest and on the last day of storage. The fruits coated with Chlorella sp. without PVC and Scenedesmus sp. associated with PVC, showed the lowest mass losses, representing a reduction of 73.79% and 78.47%, respectively, in relation to the control. In addition to mass loss, the levels of ascorbic acid (18.91 and 16.97 mg/100 g), citric acid (4.02 and 4.01), respectively, and the SS/AT ratio also stood out. The microalgae Chlorella sp. and Scenedesmus sp. can be used in coating ‘Santa Clara’ tomato fruits to maintain their physicochemical characteristics over 7 days of storage. The use of PVC film coating helped maintain these characteristics, reducing the perishability of the fruits.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251296","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: 0
Weed interference periods in lettuce crop 生菜作物杂草干扰期
IF 0.7 4区 农林科学
Horticultura Brasileira Pub Date : 2023-06-30 DOI: 10.1590/s0102-0536-2023-e2566
N. Riva, D. F. Biffe, Daniel Nalin, R. Mendes, L. A. Ferreira, V. Silva, J. Constantin
{"title":"Weed interference periods in lettuce crop","authors":"N. Riva, D. F. Biffe, Daniel Nalin, R. Mendes, L. A. Ferreira, V. Silva, J. Constantin","doi":"10.1590/s0102-0536-2023-e2566","DOIUrl":"https://doi.org/10.1590/s0102-0536-2023-e2566","url":null,"abstract":"ABSTRACT The knowledge of the adequate period for the beginning of weed management in lettuce crop can increase the efficiency of production, reducing the costs with management. The aim of this study was to determine the pre-interference period (PIP), the critical time for weed removal (CTWR) and the critical period of weed control (CPWC) in three lettuce cultivars, Elisa, Lucy Brown and Solaris. Coexistence and the absence of weeds were evaluated for each cultivar. The design was in randomized blocks with seven treatments (0, 7, 14, 21, 28, 35 and 42 days after transplanting - DAT) of coexistence and the same seven periods of weed absence with four replicates in each experiment. The highest infestation densities were with the species Oxalis latifolia, Coronopus didymus and Amaranthus hybridus. The leaf area and number of leaves per plant were reduced by up to 50% and 66%, respectively, in relation to the longest period of coexistence with weeds and yield reduced by 48% (Elisa), 40% (Lucy Brown) and 33% (Solaris). The cultivar Solaris showed greater tolerance to weed interference. Based on yield, PIP was 1, 3 and 3 DAT and CTWR was 37, 37 and 35 DAT, and CPWC was 2 to 37, 3 to 37 and 3 to 35 for the cultivars Elisa, Lucy Brown and Solaris, respectively.","PeriodicalId":56307,"journal":{"name":"Horticultura Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251187","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: 0
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