Chilean Journal of Agricultural Research最新文献_第2页

On-farm soybean response to a field foliar applied humic biostimulant at differing cropping environments of Uruguay 乌拉圭不同种植环境下大豆对施用腐殖质生物刺激素的反应

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-10-01 DOI: 10.4067/s0718-58392023000500577

Juan Izquierdo, Andrés R. Schwember, Osvin Arriagada, Gustavo García-Pintos

{"title":"On-farm soybean response to a field foliar applied humic biostimulant at differing cropping environments of Uruguay","authors":"Juan Izquierdo, Andrés R. Schwember, Osvin Arriagada, Gustavo García-Pintos","doi":"10.4067/s0718-58392023000500577","DOIUrl":"https://doi.org/10.4067/s0718-58392023000500577","url":null,"abstract":"Soybean (Glycine max (L.) Merr.) is an important crop in Uruguay with increasing production destined to exports that has been negatively affected by drought in the last years. Assessing the consistency of a biostimulant efficacy in field conditions involves multiyear replication across locations. The main objective of this study was to evaluate the effects of a single treatment with a humic biostimulant (HB) field foliar-applied at R3-R4 at dose of 4 L ha-1 on soybean crops grown during 8 yr (2014 to 2021) at 156 farm sites with different soil and water conditions on the main country cropping areas. The CONEAT index that measures soil quality and production capacity, and effective rainfall (eR) were assessed for each soybean farm site. The average grain yield varied from 8.83 (2018) to 19.93 g (2017) per untreated plants, and from 10.20 (2018) and 24.01 g (2017) per biostimulant-treated plants. The means for grain yield (g plant-1) by site were poorly related to the CONEAT and the eR indices. Similarly, the yield response to HB treatment ((%) was not related to the environmental indices which indicates a relatively constant and positive effect of the biostimulant independent of the environment, considering soil productivity and rainfall. Yield component analysis at the farm trials attributed the yield boosts by the humic largely to increased pod retention without affecting the grain weight. Overall, data analyses from all the farm trials across the years showed that the treatment significantly increased soybean yield by an average of 16.3% relative to the untreated plants. These results confirm that HB can be incorporated into the normal management plan for soybean production in Uruguay.","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135324799","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

Effect of calcium silicate and moisture content of the substrate on the growth and productivity parameters of cucumber 硅酸钙和基质含水量对黄瓜生长和生产参数的影响

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-06-01 DOI: 10.4067/s0718-58392023000300334

Georgy Faroutine, Ramón Arteaga-Ramírez, Joel Pineda-Pineda, Mario Alberto Vázquez-Peña

{"title":"Effect of calcium silicate and moisture content of the substrate on the growth and productivity parameters of cucumber","authors":"Georgy Faroutine, Ramón Arteaga-Ramírez, Joel Pineda-Pineda, Mario Alberto Vázquez-Peña","doi":"10.4067/s0718-58392023000300334","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300334","url":null,"abstract":"Water deficits can be mitigated by silicon in plants. Two greenhouse experiments were conducted at the Universidad AutÃ³noma Chapingo to determine whether Si affects the growth, nutrient absorption, and fruit production of a âBraga F1â hybrid cucumber (Cucumis sativus L.) under water deficit. A completely randomized design was used with two factors, substrate moisture (55%-65%, 75%-85%, and 90%-100% of container capacity) and Si dose (0, 50, 100 mg L-1 SiO2) applied to the substrate, resulting in nine treatments with four replicates. After transplanting, moisture content was determined on days 30 to 60 (trial I) and 60 to 90 (trial II). Accumulated fruit production (AFP), total soluble solids (TSS), aerial (ADB) and radical dry biomass (RDB), leaf area (LA), and concentrations of N, P, K, and Mg in fruits, leaves, and stems were determined. ANOVA and Tukey tests (P â¤ 0.05) were performed. For AFP and TSS, ADB and LA (trial II), the interaction between Si concentration and moisture in the substrate was nonsignificant in either trial. Individual Si effects increased fruit production without affecting TSS content. ADB, RDB, and LA production increased under water stress as a result of the interaction between Si concentration and moisture content. Application of 50 mg L-1 SiO2 resulted in 36.5% more ADB, 17.3% more LA, and 46.5% more RDB than 100 mg L-1 SiO2 and 38.8%, 29.6% and 48.9% more than Si alone. The concentration of N, P, K, and Mg in fruits, P and K in leaves, and N and K in cucumber stems also improved.","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136169663","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

In vivo elicitation is efficient in increasing essential oil yield with high anti-inflammatory sesquiterpene content in Varronia curassavica Jacq. 在体内提取能有效地提高芫花精油的产量，并具有较高的抗炎倍半萜含量。

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-06-01 DOI: 10.4067/s0718-58392023000300369

Elisa Ramos Melo, Eliane Gomes Fabri, Hélida Mara Magalhães, Pedro Henrique Gorni, Ana Cláudia Pacheco

{"title":"In vivo elicitation is efficient in increasing essential oil yield with high anti-inflammatory sesquiterpene content in Varronia curassavica Jacq.","authors":"Elisa Ramos Melo, Eliane Gomes Fabri, Hélida Mara Magalhães, Pedro Henrique Gorni, Ana Cláudia Pacheco","doi":"10.4067/s0718-58392023000300369","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300369","url":null,"abstract":"Essential oils in plants are produced in very low concentrations and elicitation stands out among the techniques used to increase their productivity. This work evaluated the potential elicitor of salicylic acid (SA) or seaweed extract (SE) on the biomass yield, physiological parameters and essential oil production in Varronia curassavica Jacq. plants. The elicitors were applied through foliar spray in four serial applications (21, 34, 53 and 70 d after transplanting the seedlings to the pots - DAT), in concentrations of 1 mM (SA) and 5 mL L-1 (SE). The control plants were sprayed with water. Biometric measurements of plant height and number of branches were performed after 2, 3 and 4 elicitor applications. Plants were harvested at 91 DAT and biometric, biochemical and phytochemical parameters were evaluated. Application of SA resulted in increases in number of leaves (11.68%) and foliar concentrations of chlorophylls (57.67%), anthocyanins (73.80%), carotenoids (42.58%), total soluble sugars (19.48%) and essential oil (18%). The plants treated with SE had no changes in leaf biomass or essential oil production. The SA treatment increased by twice the amount of Î±-humulene and (E)-caryophyllene present in the essential oil while for SE treatment there was an average increase of 78.6%. It was concluded that the elicitation of V. curassavica plants by SA foliar pulverization is an efficient strategy for promoting the higher productivity of leaves and essential oil. Foliar pulverization of SA or SE modifies essential oil quality, inducing increases in the compounds of greatest interest for the pharmaceutical industry.","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136169899","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

Harvest date estimation of ‘Gala’ apples based on environment temperature using artificial intelligence 收获日期估计’苹果会根据环境温度使用人工智能

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-06-01 DOI: 10.4067/s0718-58392023000300272

Yetzabel González, Álvaro Sepúlveda, José Antonio Yuri

{"title":"Harvest date estimation of &#8216;Gala&#8217; apples based on environment temperature using artificial intelligence","authors":"Yetzabel González, Álvaro Sepúlveda, José Antonio Yuri","doi":"10.4067/s0718-58392023000300272","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300272","url":null,"abstract":"Agroclimatic variables in different time windows were analyzed using Artificial Intelligence techniques to estimate the fruit growing season extension and harvest start date for âGalaâ apples (Malus domestica (Suckow) Borkh.) Meteorology and phenology data were collected from five orchards in Central Chile, between 2004 and 2019. The attributes derived from air temperature during the first days of fruit growing season showed the high relationship with harvest start date: The number of hours below 18 Â°C from full bloom to 35 d after (R = 0.9) and growing degree hours accumulated from full bloom to 45 d (R = -0.84). Different models were developed with these attributes. Simple and multiple linear regression models were the most accurate for explain the length of the total fruit growth period until harvest. The 35 d after full bloom time window was the most effective, with an R2 = 0.82, for estimating harvest start date of âGalaâ apples. These results contribute to the apple growers demand to schedule fruit harvest and processing, especially in a climate change scenario.","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136169908","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

Assessment of germination performance and early seedling growth of Malaysian indica rice genotypes under drought conditions for strategic cropping during water scarcity 干旱条件下战略种植马来西亚籼稻基因型的发芽性能和幼苗早期生长评估

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-06-01 DOI: 10.4067/s0718-58392023000300281

Fatematuz Zuhura Evamoni, Rosimah Nulit, Chee Kong Yap, Mohd Hafiz Ibrahim, Noorhazira Binti Sidek

{"title":"Assessment of germination performance and early seedling growth of Malaysian indica rice genotypes under drought conditions for strategic cropping during water scarcity","authors":"Fatematuz Zuhura Evamoni, Rosimah Nulit, Chee Kong Yap, Mohd Hafiz Ibrahim, Noorhazira Binti Sidek","doi":"10.4067/s0718-58392023000300281","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300281","url":null,"abstract":"Drought is a major abiotic constraint on rice (Oryza sativa L.) production in Malaysia. Malaysian Agricultural Research and Development Institute (MARDI) has released more than 50 indica rice genotypes so far. However, little has been studied about their drought tolerance. The study aimed to evaluate the germination and early seedling growth performances of 15 rice genotypes under polyethylene glycol (PEG) 6000-induced drought stresses. Four osmotic potentials of PEG 6000 (0, -0.3, -0.6, -0.9 MPa) were used in the study denoted as control, low, moderate and severe stresses respectively. Data on seed germination percentage, germination index, germination energy, germination rate, seedling height, seedling vigor I and II, fresh and dry weight of seedlings were measured. Studied parameters varied greatly among genotypes with different osmotic stresses. The findings suggested most of the rice genotypes showed an apparent reduction in germination and growth traits, while MR211 showed less reduction under all of the stresses. The Multivariate clustering grouped genotypes into five different clusters, where cluster V (MR220, MR269, MR253, MR297, MR303 and MR284) incorporated six genotypes showed better germination and growth under different osmotic potentials, followed by cluster IV (MR211 and MR307). Cluster II incorporated one genotype MARDI WARNA98 which had minimal germination and growth attributes. Principal component analysis (PCA) was performed to identify the maximum contributing variables for diversity, revealed maximum variation by first two components (81.8% and 7.7%) respectively. Therefore, PEG 6000 can be used as an efficient tool for discrimination and identification of drought tolerance in rice.","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136170167","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

Light supplementation and growing season affect the quality and antioxidant activity of lettuce 补光量和生长季节影响生菜品质和抗氧化活性

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-06-01 DOI: 10.4067/s0718-58392023000300320

Cristian Hernández-Adasme, Herman Silva, Javier Saavedra-Romero, Vicente Martínez, Víctor Escalona

{"title":"Light supplementation and growing season affect the quality and antioxidant activity of lettuce","authors":"Cristian Hernández-Adasme, Herman Silva, Javier Saavedra-Romero, Vicente Martínez, Víctor Escalona","doi":"10.4067/s0718-58392023000300320","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300320","url":null,"abstract":"The light spectrum plays a major role in regulating plant growth and development, influencing photosynthesis and photo-morphogenesis. The objective was to evaluate the weight and antioxidant activity of âLaviniaâ lettuce (Lactuca sativa L. var. capitata L.) plants under LED lights with different red:blue ratios (R:B) used as a supplement to ambient light in a greenhouse at different seasons. Five LED light supplemented treatments were used, white (W, as control, ratio blue:green:red:far-red (B:G:R:Fr) = 30:45:20:5; 0.7:1.0), blue (B = 50:20:20:10; R:B = 0.4:1.0), white-r (Wr = 25:30:40:5; 1.6:1.0), white-R (WR = 15:15:63:7; 4.2:1.0) and red (R = 10:10:75:5; 7.5:1.0) were applied in early autumn, late autumn and winter. Immediately after transplant into the hydroponic system, lettuces plants with 3-4 true leaves (5-6 cm root length) were treated with light treatments for 14 d and harvested. In early autumn, late autumn, and winter, the PAR range applied in ambient light and supplemental lights was between 361 to 495, 222 to 304, and 297 to 407 Âµmol m-2 s-1, respectively. Lettuce showed the highest fresh leaf mass in early autumn compared to late autumn and winter due to the highest leaf number. In early autumn, only lettuce under the highest R:B (7.5:1.0) had a lower weight among the light treatments. Overall, lettuces supplemented with R:B between 1.6 (Wr) to 4.2 (WR) had significantly higher DM than the control (0.7:1.0). Total phenolic contents (TPC) and antioxidant capacity (AC) were highest in early autumn, followed by winter and late autumn. Light with the highest R:B (7.5:1.0) diminished TPC and AC in all growing season. This study showed that the quality of âLaviniaâ lettuce plants grown in early autumn under R:B between 1.6 and 4.2 improved DM, and higher red component decreased the antioxidant activity.","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136173194","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

Physiological response of ‘Castillo el Tambo’ coffee plants to biochar and chemical fertilization applications Castillo el Tambo’咖啡植物以生物炭和化学肥料施用

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-06-01 DOI: 10.4067/s0718-58392023000300307

Alefsi David Sánchez-Reinoso, Alejandra Colmenares-Jaramillo, Leonardo Lombardini, Hermann Restrepo-Díaz

{"title":"Physiological response of &#8216;Castillo el Tambo&#8217; coffee plants to biochar and chemical fertilization applications","authors":"Alefsi David Sánchez-Reinoso, Alejandra Colmenares-Jaramillo, Leonardo Lombardini, Hermann Restrepo-Díaz","doi":"10.4067/s0718-58392023000300307","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300307","url":null,"abstract":"The fertilizers costs are currently elevated, and it is necessary to evaluate complementary agronomic strategies. Biochar (BC) offers several potential benefits at a relatively low cost. The research aimed was to study the effect of the application of four different doses of biochar (BC) (0, 4, 8, and 16 t ha-1) and four fertilization levels (FL) (0%, 33%, 66% and 100% of the nutritional requirements). We obtained the BC from coffee (Coffea arabica L.) pulp. The selected response variables were: Stomatal conductance (gs), water use efficiency (WUE), root hydraulic conductivity (K), leaf photosynthetic pigments (Chl), and total dry weight (TDW) of coffee âCastillo el Tamboâ. The experiment was conducted under greenhouse conditions. The results showed that plants with 0 t ha-1 and 0% FL registered low values in the physiological parameters evaluated (gs = 60.5 mmol m-2 s-1; WUE = 3.03 g DM L-1 H2O; Chl = 59.4 atLEAF readings; Kr = 9.7Ã10-6 kg s-1 MPa-1; TDW = 9.7 g). On the other hand, we recorded a positive effect when âCastillo el Tamboâ coffee plants received 8 t ha-1 BC (Kr = 11.8Ã10-6 kg s-1 MPa-1), especially at fertilization levels of 66% and 100% (gs = 146.7 and 167.5 mmol m-2 s-1; Chl = 72.8 and 66.6 Chl content; WUE = 4.3 and 5.0 g DM L-1 H2O; TDW = 13.6 and 16.0 g, respectively). In conclusion, the use of BC manufactured with coffee pulp, mainly at a dose of 8 t ha-1, can be an alternative to complement the chemical nutrition of coffee plants.","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136169681","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 Chenopodium quinoa × C. berlandieri recombinant inbred lines (RILs) for heat tolerance 藜麦× C. berlandieri重组自交系耐热性评价

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-06-01 DOI: 10.4067/s0718-58392023000300260

Asmaa Allaoui, Eric N. Jellen, El hadji Thiam, Ouafae Benlhabib

{"title":"Evaluation of Chenopodium quinoa × C. berlandieri recombinant inbred lines (RILs) for heat tolerance","authors":"Asmaa Allaoui, Eric N. Jellen, El hadji Thiam, Ouafae Benlhabib","doi":"10.4067/s0718-58392023000300260","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300260","url":null,"abstract":"There is growing interest in expanding quinoa (Chenopodium quinoa Willd.) cultivation; however, the main limitation is its sensitivity to temperatures above 32-35 Â°C. Chenopodium berlandieri Moq., the wild-weedy North American ancestor of quinoa, was employed as an exotic source of drought, heat, and salinity tolerance to enlarge genetic variation in cultivated quinoa. The present work aims to assess the influence of high temperatures on seed setting rate and production potential of two quinoa recombinant inbred lines (RILs), RIL2-4 and RIL2-5. Thus, trials were carried out in Morocco at Berrechid and Tiflet in 2017-2018 and Bouchane, MeknÃ¨s, and El Kebab in 2018-2019. The field experiment design was a randomized complete block with four replicates. Ten quantitative traits were measured. The ANOVA showed significant variability for all the evaluated parameters. The seed setting rate had widely different degrees of variation among experimental sites, exceeding 120% at Berrechid and Tiflet while approaching 98% at Bouchane. Tiflet expressed the lowest seed setting at 11.26%. Pearsonâs correlation matrix analysis showed a significant positive correlation between plant size at maturity and inflorescence length. An analysis of mixed model interactions (AMMI) revealed the first interaction; principal component axis explained 53.3% of the total variation while the second axis described 46.7%. Four homogeneous groups emerged. The recombinant inbred lines have segregated for tolerance to high temperatures as evidenced by their variable seed setting rates and grain and DM yields.","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136170161","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

Vertical farming: A potential farming practice for lettuce production 垂直种植:一种潜在的生菜种植方式

4区农林科学

Chilean Journal of Agricultural Research Pub Date : 2023-06-01 DOI: 10.4067/s0718-58392023000300248

Suwimon Wicharuck, Nuttapon Khongdee, Tasanee Pripanakul, Niwooti Whangchai, Tipsukhon Pimpimol, Chatchawan Chaichana

{"title":"Vertical farming: A potential farming practice for lettuce production","authors":"Suwimon Wicharuck, Nuttapon Khongdee, Tasanee Pripanakul, Niwooti Whangchai, Tipsukhon Pimpimol, Chatchawan Chaichana","doi":"10.4067/s0718-58392023000300248","DOIUrl":"https://doi.org/10.4067/s0718-58392023000300248","url":null,"abstract":"Land for agriculture is becoming limited in urban areas and the concept of vertical farming could help increase land productivity. Therefore, this study was conducted to investigate the potential of vertical farming on sunlight availability for lettuce (Lactuca sativa L.) production in the greenhouse system. The experimental design was completely randomized design with two different farming systems: Horizontal and vertical farming systems. Ten planting shelves including five horizontal shelves (HS) and five vertical shelves (VS) with three vertical levels as upper (VS_U), middle (VS_M) and lower (VS_L) were constructed. Two lettuce varieties, âGreen Oakâ (L. sativa var. crispa) and âGreen Cosâ (L. sativa var. longifolia), were selected for comparative measurement. Lettuce was planted in both HS and VS systems. Photosynthetically photon flux density (PPFD) was continuously monitored throughout lettuce growing period. Lettuce height and canopy width were measured weekly. Leaf fresh weight (FW) and dry weight (DW) were also evaluated. The averaged PPFD values were 245, 217, 158 and 147 Î¼mol m-2 s-1 for HS, VS_U, VS_M and VS_L, respectively. Higher values of height and canopy width were observed on HS in comparison to VS. Values of FW and DW on HS were significantly higher as compared to VS. In addition, higher plant growth occurred from upper to lower levels on VS while lower FW and DW were observed from top to bottom. Plant densities of VS (24 plant m-2) were 1.5 times higher than HS (16 plant m-2). Light use efficiency was also pointed out that VS (0.46 g mol-1) tended to have better values in comparison to HS (0.28 g mol-1).","PeriodicalId":49091,"journal":{"name":"Chilean Journal of Agricultural Research","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135220302","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