scholarly journals Lettuce (Lactuca sativa L.) root morpholgy, architecture, growth and development in an autotrophic culture system /

1997 ◽  
Author(s):  
Silvana Nicola
Keyword(s):  
Lactuca Sativa ◽  
Growth And Development ◽  
Culture System ◽  
Lactuca Sativa L ◽  
Autotrophic Culture

scholarly journals PENGARUH VARIASI DOSIS PUPUK ORGANIK LIMBAH CAIR NANAS (LCN) TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN SELADA

BIOLOVA ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 16-25
Author(s):  
Moh Muarif ◽  
Agus Sujarwanta ◽  
Handoko Santoso ◽  
Muhfahroyin Muhfahroyin
Keyword(s):  
Lactuca Sativa ◽  
Growth And Development ◽  
Liquid Waste ◽  
Plant Growth And Development ◽  
Lactuca Sativa L ◽  
Randomized Design ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Biology Learning ◽  
Completely Randomized Design

Abstract: This research is an experimental research, which aims to determine the effect of variation dosage in of organic pineapple liquid waste fertilizer,  on the growth and productivity of red lettuce (Lactuca Sativa L) and its potential as learning resources of biology learning. This research uses a Completely Randomized Design with 1 control and 3 treatment combinations and 5 repetitions. This research was conducted for 30 days. The parameters which is used in this research include plant height and wet weight of lettuce (Lactuca sativa L), with supporting data in the form of number of leaves and stem diameter. The main data is tabulated and analysed using the SPSS 25.0 application which includes Multivariate Analysis of Variance. The results of this research can be concluded that the application of organic fertillizer from pineaplle liquid waste has a significant influence on the growth and product of lettuce (Lactuca sativa L). The results of the research be used as a practical guide on plant growth and development materials.

scholarly journals Effect of Differently Matured Compost Produced from Willow (Salix viminalis L.) on Growth and Development of Lettuce (Lactuca sativa L.)

2021 ◽  
Vol 3 (1) ◽  
pp. 7
Author(s):  
Jakub Bekier ◽  
Elżbieta Jamroz ◽  
Andrea Kałuża-Haładyn ◽  
Józef Sowiński ◽  
Katarzyna Adamczewska-Sowińska
Keyword(s):  
Lactuca Sativa ◽  
Growth And Development ◽  
Salix Viminalis ◽  
Soil Productivity ◽  
Fallow Land ◽  
Chemical Parameters ◽  
Lactuca Sativa L ◽  
Brown Coals ◽  
Germination And Growth ◽  
Test Plants

Soil amendments from peats, brown coals and composts produced from segregated biodegradable waste or biomass from fallow land can increase soil fertility and improve soil productivity. The aim of the study was to determine the possibility of using willow (Salix viminalis L.) biomass composts as a substrate component in horticulture. The objects of the research were composts produced from willow chips (A), willow mixed with hay (B) and willow mixed with hay and mineral nitrogen (Nmin) fertilizer (C). Composting was carried out in a pile under aerobic conditions. In order to determine the properties and fertilizing value of the composts, basic chemical parameters were analyzed (pH; total contents of C, N and P), and a pot experiment was established to analyze germination and growth of lettuce (Lactuca sativa L.). Changes in pH, total nitrogen content (TN), phosphorus (TP) and a decrease in TOC were observed in the investigated samples. The results of the experiment showed that the highest yield was obtained from the pots with the mixture of willow, hay and Nmin. Matured composts significantly stimulated the germination and growth of the test plants. It can be concluded that the addition of hay and Nmin significantly increased the fertilizing value of the investigated composts.

scholarly journals Respon Pertumbuhan dan Hasil Tanaman Selada (Lactuca sativa L.) terhadap Beberapa Dosis Pupuk Kandang Kotoran Itik pada Tanah Rawa Lebak

2011 ◽  
Vol 1 (1) ◽  
pp. 7-11
Author(s):  
Nur Hafizah ◽  
Fikriah Fikriah
Keyword(s):  
Lactuca Sativa ◽  
Growth And Development ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Lactuca Sativa L ◽  
Randomized Design ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Repair Techniques

       Lettuce plants in the process of growth and development require additional nutrients by repair Techniques for cultivation and repair of organic or inorganic fertilizers. Organic fertilizers are also called natural fertilizers because all or most of them come from natural fertilizers. This study aims to (i) find out the effect of giving dung manure to the growth and yield of lettuce on swampy soil, (ii) get the best dose from the administration of duck manure to the growth and yield of lettuce on swampy swamp soil. This research was conducted in Hambuku Tengah Village, Sungai Pandan District from April to June 2010. Using a Completely Randomized Design (CRD). The factors studied were 9 doses of duck manure fertilizer dosage with 9 treatments, there are b0 = 0 t.ha-1; b1 = 2,5 t.ha-1;  b2 = 5,0 t.ha-1;  b3 =  7,5  t.ha-1;  b4 = 10 t.ha-1 ; b5 = 12,5 t.ha-1; b6 = 15,0 t.ha-1; b7 = 17,5 t.ha-1; b8 = 20,0 t.ha-1 with 3 replications, thus there were 27 experimental units. The observed variables were plant height and number of leaves aged 14, 21, 28 and 35 days after planting (DAP) and leaf wet weight at harvest. From the results of the study there was a response of tall mustard plants aged 28 HST and wet weight of mustard plants but there was no response to the height of mustard plants aged 14, 21 and 35 HST on the administration of duck manure, with the best dose was treatment b4 (10 t.ha -1)

UTILIZAÇÃO DE ÁGUAS SALOBRAS NO CULTIVO HIDROPÔNICO DA ALFACE

Irriga ◽  
2010 ◽  
Vol 15 (1) ◽  
pp. 111-118 ◽  
Author(s):  
Rafaelly Suzanye Santos ◽  
Daniel Da Costa Dantas ◽  
Fabiola Pascoal Nogueira ◽  
Nildo Da Silva Dias ◽  
Miguel Ferreira Neto ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Lactuca Sativa ◽  
Growth And Development ◽  
Dry Matter ◽  
Hydroponic System ◽  
Lactuca Sativa L ◽  
Salinity Increase ◽  
Salinity Levels ◽  
Cultivar Variation ◽  
Nutrient Solutions

A salinidade é um problema sério para a agricultura, pois limita o crescimento e o desenvolvimento das plantas sensíveis. A tolerância das culturas à salinidade é influenciada por diversos fatores, incluindo estágio de crescimento, condições ambientais, espécies e cultivares de uma mesma espécie. Foram testados três salinidades da água no preparo da solução nutritiva (0,5; 3,0 e 6,0 dS m-1) em três cultivares de alface (Babá de verão, Verônica e Quatro estações) em sistema hidropônico sob condições protegidas com a finalidade de avaliar a tolerância das cultivares à salinidade. Não foram observados diferenças entre as cultivares estudadas quanto à salinidade da água de irrigação. O aumento da salinidade da água de irrigação provocou redução do número de folhas e da matéria seca da parte aérea.   UNITERMOS: Lactuca sativa L., solução nutritiva, condutividade elétrica.     SANTOS, R. S.; DANTAS, D. C.; NOGUEIRA, F. P.; DIAS, N. S.; FERREIRA NETO, M.; GURGEL. M. T. BRACKISH WATER USE ON HYDROPONIC LETTUCE     2 ABSTRACT   Salinity is a serious problem for agriculture because it can limit the growth and development of salt-sensitive plants. Salt tolerance is affected by several factors, including the growth stage, environmental conditions, species and cultivar variation for each species. In order to compare salt tolerance, three water salinity levels were used to prepare nutrient solutions (0.5; 3.0 and 6.0 dS m-1) and were applied on three different lettuce cultivars in a hydroponic system under greenhouse (cvs. Babá de verão, Verônica and Quatro estações). Differences in salt tolerance of the nutrient solutions were not observed for the studied cultivars. The salinity increase in the nutrient solutions reduced the leaf number and dry matter biomass.   KEYWORDS: Lactuca sativa L., soil solution, electric conductivity.    

Pengaruh Jenis dan Konsentrasi Pupuk Organik Cair terhadap Pertumbuhan dan Produksi Tanaman Selada (Lactuca Sativa l.) secara Hidroponik

2017 ◽  
Vol 2 (01) ◽  
pp. 115-127
Author(s):  
Siti Hilalliyah ◽  
Intan Sari ◽  
Zahlul Ikhsan
Keyword(s):  
Lactuca Sativa ◽  
Lactuca Sativa L

Sistem hidroponik memungkinkan sayuran ditanam di daerah yang kurang subur dan daerah sempit yang padat penduduknya. Alasan penerapan teknik hidroponik yang utama adalah karena terbatasnya lahan pertanian yang produktif untuk memenuhi kebutuhan manusia yang semakin banyak tiap tahunnya, sehingga dibutuhkan suatu terobosan baru untuk memecahkan masalah tersebut. Penelitian ini telah dilaksanakan pada bulan November 2015 sampai bulan Januari 2016 yang bertempat di kampus Fakultas Pertanian Jl. Propinsi Kecamatan Tembilahan Hulu Kabupaten Indragiri Hilir Propinsi Riau.Metode penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) pola faktorial yang terdiri dari 2 faktor. Faktor pertama adalah jenis POC (N) yang terdiri dari 3 taraf perlakuan yaitu POC Jus Bumi, POC Bonggol Pisang danPOC Limbah Sayuran. Faktor kedua adalah konsentrasi larutan (K) yang terdiri dari 3 taraf perlakuan yaitu 150 ppm, 200 ppm dan 250 ppm. Parameter pengamatan adalah Tinggi Tanaman , Jumlah Daun , Luas Daun , Diameter Batang, Panjang akar ,Volume Akar, Kadar Air, dan Bobot Hasil.Hasil pengamatan menunjukkan bahwa perlakuan jenis POC jus bumi dengan konsentrasi larutan 150 ppm memberikan pertumbuhan dan produksi terbaik untuk tanaman selada secara hidroponik sistem wick. Perlakuan jenis POC limbah sayuran dengan konsentrasi 250 ppm memberikan pertumbuhan dan produksi terbaik selain POC jus bumi sehingga dapat dijadikan sumber POC alternatif.

KHẢO SÁT DƯ LƯỢNG NITRAT VÀ KIM LOẠI NẶNG (Cu, Pb, Zn) TRONG CÂY RAU XÀ LÁCH (Lactuca sativa L.) TRỒNG Ở PHƯỜNG HƯƠNG LONG - THÀNH PHỐ HUẾ

2015 ◽  
Vol 100 (1) ◽  
Author(s):  
Nguyễn Minh Trí ◽  
Nguyễn Hạnh Trinh ◽  
Nguyễn Thị Hoàng Phương
Keyword(s):  
Lactuca Sativa ◽  
Viet Nam ◽  
Lactuca Sativa L ◽  
Tu 45

Xà lách (Lactuca sativa L.) là một loại rau ăn lá quan trọng có giá trị dinh dưỡng và kinh tế cao. Cây Xà lách có đặc điểm là loại rau ngắn ngày, có thời gian sinh trưởng ngắn khoảng từ 45 - 55 ngày, có thể phát triển tốt trên nhiều loại đất, là loại rau ăn sống được sử dụng rất phổ biến trong bữa ăn hàng ngày của người dân Việt Nam nên nó được trồng quanh năm, do vậy vấn đề về chất lượng lại càng phải được quan tâm nhiều hơn. Bài báo này giới thiệu kết quả phân tích về dư lượng nitrat và các kim loại nặng (Cu, Pb, Zn) trong rau Xà lách vụ Xuân - Hè 2012 - 2013 ở phường Hương Long - thành phố Huế. Kết quả nghiên cứu cho thấy: đất trồng rau Xà lách tại phường Hương Long – thành phố Huế đạt tiêu chuẩn về hàm lượng kim loại nặng (Pb, Zn) theo QCVN 03:2008/BTNMT, nhưng hàm lượng Cu và nitrat là khá cao. Rau Xà lách thành phẩm có dư lượng nitrat cao hơn 1,21% so với quy định và các kim loại nặng (Pb, Zn, Cu) tồn dư trong rau lại ở mức cao và vượt tiêu chuẩn cho phép nhiều lần sẽ ảnh hưởng đến sức khỏe của người sử dụng.

EFEITO DO LIXIVIADO DE VERMICOMPOSTO EM DIFERENTES DILUIÇÕES, COMO BIOFERTILIZANTE PARA A CULTURA DA ALFACE (LACTUCA SATIVA L.)

2018 ◽  
Author(s):  
Ferreira Gabriel Menezes ◽  
Souza Antonio Tassio de Oliveira ◽  
Souza Alisson Silva de ◽  
Gomes Igor Thiago dos Santos ◽  
Cunha Denise de Andrade
Keyword(s):  
Lactuca Sativa ◽  
Lactuca Sativa L

PROMOCIÓN DEL CRECIMIENTO DE PLANTAS DE LECHUGA (Lactuca sativa L.) CON DOSIS SUBLETALES DE OZONO APLICADAS AL MEDIO DE CULTIVO

2015 ◽  
Vol 38 (4) ◽  
pp. 405
Author(s):  
Jorge A. Vázquez-Ybarra ◽  
Cecilia B. Peña-Valdivia ◽  
Carlos Trejo ◽  
Albino Villegas-Bastida ◽  
Sergio Benedicto-Valdéz ◽  
...  
Keyword(s):  
Lactuca Sativa ◽  
Lactuca Sativa L

Las plantas han desarrollado un conjunto de mecanismos morfológicos, bioquímicos y fisiológicos de respuesta a los cambios ambientales de O3. El objetivo de este estudio fue evaluar el efecto de dosis subletales de O3, aplicadas al medio de cultivo, en el crecimiento de plantas de lechuga (Lactuca sativa L.). Con base en el fenómeno denominado hormesis, la hipótesis fue que existe una dosis umbral de O3 que modifica positivamente el metabolismo de las plantas e incrementan su crecimiento y productividad. En un sistema hidropónico de plantas en flotación se evaluaron nueve dosis entre 0.53 y 59.40 mg L-1, aplicadas semanalmente, y se compararon con un testigo sin O3. Las variables del crecimiento que se cuantificaron fueron: diámetro del tallo, altura del tallo, altura de hoja, número total de hojas, longitud de raíz, peso fresco de raíz, biomasa seca de raíz, peso fresco y biomasa del vástago. Las plantas completaron su ciclo de crecimiento sin algún daño en el crecimiento con concentraciones entre 0.53 y 5.94 mg de O3 L-1, pero 20, 40 y 60 mg L-1 fueron letales en plantas de cinco semanas de edad. Estas dosis causaron oscurecimiento y necrosis acelerados de los tejidos foliares y muerte, los cambios de color de las hojas fueron evidentes desde los 20 min posteriores a la única aplicación de O3. Además, las dosis de 2.66 y 3.96 mg L-1 incrementaron significativamente (P ≤ 0.05) el diámetro del tallo, la biomasa fresca en la raíz y el vástago y la biomasa seca en la raíz y el vástago, en promedio 16, 23, 15, 89 y 11 % con respecto al testigo, después de 10 semanas de crecimiento.

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