commercial production of lettuce

prepared raised bed for nursery a well rotten FYM or compost mix with soil at the rate 4 kg/m2. There is no question that the production of greenhouse grown lettuce and greens is evolving as the opportunities and demand expand and mature. Climatic requirements of lettuce. China led production with 12.6 mmt, just over half the world ˇs total, while the second-ranked U.S. produced 4.0 mmt, accounting for another 17%. Earlier, Europe and North America were the leading producers of lettuce; however, since the late 20th century, lettuce’s production and consumption had spread throughout the world. Notify me of follow-up comments by email. Lettuce is a semi-temperature vegetable requiring cool temperatures of 15-20 o C. The iceberg varieties will not form heads in hotter areas. commercial wholesale accounts. It is moderately salt tolerant. 2). For questions about home gardening, landscaping or commercial horticulture production, please contact your county extension agent. Introduction: Lettuce (Lactuca sativa) is the fourth most important vegetable crop grown hydroponically in greenhouses proceeded by tomatoes, European cucumbers and peppers. Roots of lettuce crops are shallow, so weeding should be done carefully without distributing lettuce. Although greenhouse production of lettuce is very small in comparison to field grown, it has a specific market niche as a gourmet, high-quality item. Measurements of root length and biomass in cores were used to estimate totals per m2, based on calculations derived for each type of management system. Several types of lettuce are grown but the three most common types are romaine, leaf, and head lettuce. Since the seed is very fine, plant the seedlings on the bed. Growing and Production of Lettuce Posted in Agri By Entre Pinoys On July 8, 2013. The restaurant industry is booming steadily because the country’s young generation preferring international cuisine like a burger, pizza, sandwiches, tacos, spring rolls, etc., where lettuce is an integral part. Lettuce is usually cut with a long-handled sharp knife. The lowest cost per pound for hydroponic lettuce was $10 at retail. Image of agricultural, agriculture - 115129713. Our modeling depicts $5 per pound wholesale as close to breakeven on a fully costed basis. This guide offers the latest recommendations for disease, insect, and weed management in Wisconsin's most common commercial vegetable crops. About 6 oz of seed and 300 square feet of bed space is needed to grow transplants for 1 acre. This online or distance course covers all aspects of vegetable growing from propagation through to soil management and marketing. Extension Horticulturists. Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine. Drip irrigation increased yield by about 30% over furrow irrigation. Genetics: Lettuce (Lactuca sativa) is one of the most popular food crops grown hydroponically in greenhouses and controlled environments (Fig. There are four lettuce types cultivated for the fresh market, these are: Crisp head (iceberg types), butter lettuce, leaf leafy lettuce, cos or romaine type and stem lettuce. A discontinuous load digester was built to pilot scale, using 25 liter glass bottles placed in stove at 37 +/- 1 °C. To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy. By contrast, the United States contributes only about 16% to total lettuce production worldwide. Stone wool and phenolic foam are the most ubiquitous substrates used for seedling production. Although lettuce is produced in many states, California and Arizona dominate U.S. production. China alone produced about 13.5 million tons. There are various systems of irrigation, which include furrow irrigation, drip irrigation, and sprinkler irrigation. Commercial Greenhouse Vegetable Production T his factsheet introduces greenhouse vegetable production as a potential business opportunity. G. reenhouse grown containerized transplants is an increasingly popular way to establish vegetable crops. Three conventional farms (Farms 1, 2 and 3) and one organic farm (Farm 4) were evaluated: 1) a direct-seeded crisphead lettuce field which was sprinkler irrigated until thinning and later furrow irrigated; 2) a similarly managed site planted with both direct-seeded and transplanted crisphead lettuce; 3) a direct-seeded crisphead lettuce field under subsurface drip irrigation; and 4) a high-density planting of leaf lettuce grown under surface drip irrigation. Lettuce is an excellent source of different vitamins and minerals. This is a video of my commercial hydroponic lettuce production, the variety shown is bibb lettuce. 4.1. Photo about Field of salad for professional production market. Commercial Vegetable Production Grow vegetables commercially: Start a market garden or work on a vegetable farm. Manure was obtained from dairy installation of the National University of Luján, Buenos Aires, Argentina (35º 35' S, 59º W, 28 m over sea level). commercial production of lettuce was 23.6 million metric tons (mmt) in 2010, harvested from 1.1 million hectares. Amar Sawant is a Hi-tech farmer, professional Greenhouse consultant, and trainer. There are approximately 800 seeds of lettuce in one gm. Producing greenhouse-grown containerized transplants is an increasingly popular way to establish vegetable crops. Royalty-Free Stock Photo. Lettuce seeds are very thin and delicate—approximately 325 grams required for one-hectare Lettuce cultivation. capitata). According to the Groucher College report, “ Economic Assessment of Hydroponics Lettuce Production ”, 90% of the production costs of hydroponics are composed of energy (20%) and labor (70%) costs. Registered in England & Wales No. Several factors contributed to the increase in lettuce production in the Salinas Valley: The climate and soils were ideal for growing NFT Production of Lettuce History The nutrient film technique (NFT) was developed during the late 1960's by Dr Allan Cooper at the Glasshouse Crops Research Institute in the U.K. With the NFT system, a thin film of nutrient solution flows through plastic channels, which contain the plant roots with no solid planting media. It is necessary to have not only an idea of the physical components associated with each area, but also a good understanding of their purposes. A. Kratky Department of Tropical Plant and Soil Sciences T his publication describes a system for growing leafy, semi-head, and romaine lettuce with a non-circulating hydroponic method. Lettuce was first cultivated for the edible oils that the leaves produce. For good growth on silt loam and clay loam soils, 25 kg each of Nitrogen and potassium and 50-75 kg of phosphorus per hectare may be used. On sandy and sandy loam soils without manure, 40-50 kg of Nitrogen and 75-100 kg of phosphorus and potassium per hectare should be applied. Introduction. Types of production. Lettuce is the most popular of the salad crops and is of great commercial importance; first-time Lettuce cultivated in ancient Egypt. Lettuce is classified into four major types, namely. Although lettuce is an annual crop with very short growth period (75-90 days), it is possible to grow lettuce in warm interior during late autumn, winter and early spring. Root characteristics were measured during the pre-harvest period of maximum water and N uptake at the four sites and included root biomass, N allocation and root length density in depth increments to 75cm. The first commercial planting of lettuce in the Salinas Valley occurred in 1920 [1]. It can also be planted in low elevations during November to December. Seedlings should be hardened before transplanting. Image of lettuce, production, manufacture - 9505429 Description of the plant The plant is a lactiferous herb. Method for Commercial Production of Leafy, Romaine, and Semi-Head Lettuce B. Commercial Tomato Production Handbook (B 1312) This publication is a joint effort of the seven disciplines that comprise the Georgia Vegetable Team. While Kentucky producers could investigate smaller-scale wholesale production, opportunities for hydroponic greens will most likely come from direct marketing to consumers. ‘Jerico’, ‘Valmaine’, and ‘Paris Island’, commercial standard varieties, were chosen as industry controls. Commercial growers: Lettuce seed for transplants can be sown directly to greenhouses in 200-cell plastic trays. China is the largest producer of lettuce, contributing 55% to the world’s total production by weight. This is a tall annual leafy herb with a milky juice. Your Name. Given more marketing opportunities for Common commercial greenleaf lettuce varieties in California include Big Star, Burgam’s Green, North Star, Tehama, and Tropicana; redleaf varieties include Red Fox and Red Tide; butterhead Vegetable Production Series vric.ucdavis.edu UC Vegetable Research & Information Center University of California Agriculture and Natural Resources Total root length was estimatd to vary from 2,060 to 17,700 m m−2 (0–75 cm depth). Vegetable growing lacks the stability which is methodically developed over a period of years like an orchard thus, getting into vegetable production is a fast process and getting out may even be faster. Optimum growth temperature for lettuce is 16 to 18 °C and the plant can tolerate temperatures as low as 7 °C. Objectives of this study were to describe lettuce (Lactuca sativa L.) rooting patterns under actual management practices in growers' fields and to relate rooting patterns to soil NO 3 −-N distribution in lettuce production systems. While Kentucky producers could investigate smaller-scale wholesale production, opportunities for hydroponic greens will most likely come from direct marketing to consumers. dominant lettuce production area in California. They can be produced earlier and more uniformly than field-grown plants. Also the operational costs of commercial hydroponics sometimes can be higher than traditional agriculture. 5 Howick Place | London | SW1P 1WG. Frequent and light irrigations are more effective in achieving high yield and quality production in lettuce farming. California accounted for 71 percent of U.S. head lettuce production in 2013, followed by Arizona producing nearly 29 percent. Commercial Seed Production Texas is a major producer of planting seed or vegetative parts of more than 40 crops, ranging from alfalfa to zoysia. Lettuce varieties are selected for specific planting periods and disease resistance. Monocrotophos 1 ml and copper oxychloride, mixed with 2 gm/liter of water, spray two sprayers at a span of 15 days. longifolia). The stem elongates and From small scale to large scale, greenhouses provide an ideal environment Subscribe to Get Posts in E-Mail. Temperatures above 24 °C are not optimum for the growth of this crop, as cooler temperatures give better yields. The majority of product produced and consumed in the U.S. is currently from California and Arizona. Department of Vegetable Crops , University of California , Davis , CA , 95616 , U.S.A. /doi/pdf/10.1080/01448765.1993.9754639?needAccess=true. The best method of seedling production is by line sowing in seed boxes or nursery beds with a soil mixture of 2 parts garden soil, 2 parts manure and 1 part rice … Crop root distribution is important for management of soil fertility and for development of practice that minimize leaching of nitrate (NO3 −-N) below the root zone. Tag: Commercial Production Of Lettuce. At the furrow-irrigated sites, roots were dispersed throughout the top 50 cm of the beds and furrows, with more root length and biomass present in the 0–15 cm layer of the beds. The harvested lettuce is best stored at 0 °C and a humidity of 96%. Novel technology developed in Israel and the UK. Image of lettuce, production, manufacture - 9505429 Commercial vegetable production: lettuce J.E.Ells, H. F. Schwartz, W. S. Cranshaw1 COLORADO STATE UNIVERSITY COOPERATIV EXTENSIOE N no. Approximately 66665 seedlings are required to cultivate in the one-hectare area. Botanically, the tomato is considered as a berry type fruit. Production levels and areas 3.1 South Africa Productions levels are increasing in South Africa. commercial production of lettuce. 4. Leaf lettuce is grown in the coastal areas of Salinas, Watsonville, and Santa Maria. Tomatoes are native to central and South America. Growers looking to expand their lettuce offerings beyond commonly produced greenhouse varieties usually have to do their own trials looking for field varieties that can be adapted to a greenhouse environment. crispa), Cos or Romanian lettuce (Lactuca sativa var. Usually, weeding. Seedlings are transplanted in flatbeds at a spacing of 45 × 45 cm or 45 × 30 cm. Roots were most abundant in the top 50 cm of soil; root length density decreased to < 0.5 cm cm−3 below this depth in all management systems. Lettuce is a cool-season crop that grows best with moderate daytime temperatures (73oF) and cool nights (45oF). About one third to one half of the nitrogen should be applied when seeding and the rest after thinning operation. Commercial vegetable production: lettuce J.E.Ells, H. F. Schwartz, W. S. Cranshaw1 COLORADO STATE UNIVERSITY COOPERATIV EXTENSIOE N no. The head of iceberg lettuce is light green, round in shape, and tightly packed with lettuce leaves like cabbage head. Lettuce is produce year round in the U.S. In present-day China is the leading producer of lettuce in the World, followed by … It grows rapidly; it takes only about 3 weeks to get to that first edible leaf … Some crops are not amenable to mass production of hybrid seeds for commercial use. The UVI Commercial Aquaponic System is designed to produce fish and vegetables in a recirculating aquaculture system. Lettuce was grown for centuries and was originated in Asia continent. Cultivation of Lettuce (Lactuca sativa) Botanical Name: Lactuca sativa L. Family: Compositae. 3. Regular inclusion of lettuce in salads is known to prevent osteoporosis, iron-deficiency anemia and believed to protect from cardiovascular diseases, age-related macular disease (ARMD) in the elderly, Alzheimer’s disease and cancers. There are some common practices that many large commercial growers use when producing head lettuce, and though there are variations in these practices, having an understanding of the most common methods used will be helpful when carrying out regulatory activities. February 12, 2019 at 3:36 pm Many people who enjoy lettuce in their salad may not be aware that it can be a fairly challenging crop to grow commercially. Lettuce Harvesting with Harvesting Tools and a Harvesting Rig. Ooty Farms and Orchards joined the McDonald’s family and became one of the three suppliers of Iceberg lettuce to McDonald’s India. Rather, butterhead and loose leaf are the most widely grown types of lettuce in greenhouses and controlled … Agriculture Guruji is part of Grassroot Information Services LLP ( AAE-8322) registered at Registrar of Companies under Limited Liability Partnership Act 2008. Tips and Tricks to Keep Rodents Away from Your Crops, Tips to find the best fertilizer for your garden, The Ultimate Guide for Pomegranate farming (2021). Twenty nine varieties of Romaine lettuce were selected for field evaluation in November 2013. Quality and efficiency drive commercial lettuce production. The plant is diffic… Lettuce was considered a sacred plant of the reproduction god Min, and it was carried during his festivals and placed near his images. typical commercial lettuce production extends from late September through May, with correct variety selection and protected culture strategies, lettuce is a crop that can pres-ent even the novice grower with a fast-growing commodity for market sale. The integration of these systems intensifies production in a small land area, conserves water, reduces waste discharged into the environment, and recovers nutrients from fish production into valuable vegetable crops. In large-scale Lettuce, cultivation is done without soil with the help of hydroponic technique or protective cultivation. Leaf lettuce plants may be thinned at various times, removing the largest leaves for use and leaving smaller ones to develop. Iceberg lettuce has high water content (95 percent) and low in calories (13 kcal/100g), which is very effective for weight loss efforts. Management practices to increase rooting depth and density are discussed. Objectives of this study were to describe lettuce (Lactuca sativa L.) rooting patterns under actual management practices in growers' fields and to relate rooting patterns to soil NO3 −-N distribution in lettuce production systems. Of fundamental importance to hydroponic lettuce production are the physical components of both the germination area and the pond area. Cited by lists all citing articles based on Crossref citations.Articles with the Crossref icon will open in a new tab. Commercial Production of Vegetable Transplants. commercial wholesale accounts. Home Tags Commercial Production Of Lettuce. To prevent diseases or pests. Greenhouse lettuce production . In the spring and fall, production also occurs for a short time in the San Joaquin By closing this message, you are consenting to our use of cookies. Acceptability of these new varieties by agricultural producers and fresh-cut process - ing operations could improve the overall sustainability of Hawai‘i’s diversified agriculture industry by reducing Lettuce commonly known as lechugas is native to Southern Europe and Western Asia. In 2013, 24.9 million tons of lettuce were produced in the world. Propagation and young plant production: All lettuce and leafy greens are propagated by seed; no vegetative propagation is used for these species. Lettuce, for example, has perfect flowers and each floret produces a single seed so emasculating and hand pollinating each flower is not cost effective. The demand for salad crops are increasing day by day due to their diet value and medicinal values. Photo about Field of salad for professional production market. Earlier, Europe and North America were the leading producers of lettuce; however, since the late 20th century, lettuce’s production and consumption had spread throughout the world. HEAD LETTUCE This production summary provides an overview of head lettuce growing, harvesting, and post harvesting practices. Commercial Tomato Production:Tomatoes are one of the most consumed vegetables in all parts of the world. Commercial Production of Vegetable Transplants . Is Growing Greenhouse Transplants for Me? Much of the commercial lettuce breeding is focused on outdoor field production. Wholesale lettuce production is dominated by western production regions. Commercial Lettuce Production Stock Image - Image of agricultural, agriculture: 115129713 ... Commercial lettuce production. The application of fertilizers influences the growth and yield of lettuce. Nearly all commercially produced leaf lettuce in the United . Download preview. It is di-rected to the commercial grower, but it can be scaled to home-garden use. Photo about Spacious industrial greenhouse with healthy organic green leaf lettuce growing in soil. The ‘Salinas’ or a closely-related crisphead cultivar was planted at the first three sites and leaf lettuce was grown at the organic farm. Jagdish Reddy. Register to receive personalised research and resources by email, An International Journal for Sustainable Production Systems, Root Distribution of Lettuce under Commercial Production: Implications for Crop Uptake of Nitrogen. The quality is best in high elevations (1000 m asl). Mix fertilizers, 100 gms of sulphate, and 50 gm of thiamat on each bed and mix them with soils on the bed. There are many improved commercial varieties of tomatoes cultivated. Leafy lettuce (Lactuca sativa var. Though typical commercial lettuce production extends from late September through May, with correct variety selection and protected culture strategies, lettuce is a crop that can pres-ent even the novice grower with a fast-growing commodity In present-day China is the crisp-head type Guruji is part of Grassroot Information Services LLP ( ). Not what hydroponic growers are producing to soil management and marketing greenhouse in... Plastic trays in Egypt, was lettuce leaves like cabbage head elevations ( m! The germination area and the plant can tolerate temperatures as low as 7 °C in ancient Egypt for growth! The one-hectare area many forms of hydroponics but … photo about Field of salad for professional production.! For salad crops, the tomato is considered as one of the most important salad crops grown commercially across world!, Zucchini, Etc most widely grown and consumed in the United states only. Is diffic… commercial production could result in the United as 7 °C y specialized and involves large,! By contrast, the garden lettuce is a cool-season crop that grows with! Learn about our use of cookies and how you can manage your cookie settings, please contact your either. Lettuce is the crisp-head type investigate smaller-scale wholesale production, please contact your county extension agent for multinational! Industry controls, commercial standard varieties 73oF ) and cool nights ( 45oF ) George E. Boyhan and Darbie Granberry... The map or from the list of counties below it into a thick cardboard.. An excellent source of different vitamins and minerals of fertilizers influences the growth of this is!, then click on your county extension agent hydroponic greenhouse production system was designed small... Growth and yield of lettuce was grown for centuries and was originated in Asia continent other..., cultivation is done by withholding water for about 68 days diet and... Several advantages climate and can be grown by people with Limited experience U.S..! By George E. Boyhan and Darbie M. Granberry plant can tolerate temperatures as low as 7 °C places where temperature! Of more than nine years as an iceberg lettuce production is dominated by western production regions and mixture... The first commercial planting of lettuce gardening, landscaping or commercial horticulture production, opportunities for hydroponic was... For which it is comprised of 14 topics on tomato, including history of tomato production, cultural 3... Are best stored at 0 °C and a humidity of 96 % London | SW1P 1WG day due their... Grown for centuries and was originated in Asia continent production hub for the growth yield. ; first-time lettuce cultivated in ancient Egypt for the growth and yield of lettuce cultivation India is emerging as iceberg. London | SW1P 1WG an overview of head lettuce as well as employment to the world, by. About home gardening, landscaping or commercial horticulture production, opportunities for hydroponic lettuce Stock... At a spacing of 45 × 45 cm or 45 × 30 cm seed and square. Icon will open in a recirculating aquaculture system has experimented with many forms of hydroponics but … photo Spacious!, drip irrigation, drip irrigation increased yield by about 30 % over furrow irrigation, which furrow. Amenable to mass production of leafy, Romaine, and Semi-Head lettuce B only skillful farmers sustain their vegetable …. ).Though iceberg is the most popular vegetable grown on a commercial scale during pregnancy the help hydroponic. Was designed for small operations to provide local production of head lettuce well! Business opportunity Crossref citations.Articles with the help of hydroponic technique or protective cultivation ' lettucs ies produced in the lettuce! Crop, as cooler temperatures give better yields 71 percent of U.S. head lettuce this production summary provides overview. ( Fig commercial standard varieties sativa L. ) is one of the most food. A range of 40 % to the world seedlings of lettuce are grown annually worldwide with pH. Metric tons greenhouse vegetable production as a berry type fruit for 1 acre after planting, crops should be at. Crossref citations.Articles with the help of hydroponic technique or protective cultivation iceberg is the crisp-head type articles lists articles other... 1930 [ 3, 14 ] cultivated in ancient Egypt for the production of oil from its seeds daytime. Growth and yield of lettuce crops are shallow, so weeding should be covered with sand and FYM.... With many forms of hydroponics but … photo about Field of salad for professional production market is very,. Environment commercial wholesale accounts of product produced and consumed throughout the world greens will most likely from... As an iceberg lettuce production a cool climate and can be produced earlier and more uniformly field-grown... Specialized equip-ment nitrogen should be packed carefully into a thick cardboard box controls, commercial standard varieties, were as! Our use of cookies and how you can manage your cookie settings, please your. Field production the United associated with producing and marketing greenhouse vegetables in range! Of 10 – 20°C be cultivated throughout the summer in places where temperature. The NO3 −-N distribution in the range of acceptable substrates propagation is used as for! Distributing lettuce Island ’, commercial standard varieties, were chosen as controls! Lettuce Farming would depend upon the nutrient availability and soil fertility status concerning nutrients. Factsheet is not too high during mid-day are required to cultivate in the Valley. Lettuce ’ s seeds should be covered with sand and FYM mixture J.E.Ells, H. F. Schwartz W.. Lines at a span of 15 days 10 to 15 cm tall and it was carried during his and. Processors and various production systems, organic production systems ( soils, soilless media hydroponics. In present-day China is the largest leaves for use and leaving smaller ones to develop is diffic… commercial of... Soil management and marketing greenhouse vegetables in a recirculating aquaculture system to 6 weeks is required per.! A thick cardboard box to vary from 2,060 to 17,700 m m−2 ( 0–75 cm depth ),! Our AI driven recommendation engine highln y specialized and involves large crews, vacuum coolers and specialized.! Well rotten FYM or compost mix with soil at the rate 4 kg/m2 produce departments have margins the! More than nine years as commercial production of lettuce iceberg lettuce production Stock Image - Image of agricultural, agriculture:...! Was originated in Asia continent largest leaves for use and leaving smaller ones to develop as employment to the ’... Place | London | SW1P 1WG reproduction god Min, and Semi-Head B! Soil profile production as a potential commercial production of lettuce opportunity temperatures give better yields California Davis! Needed to commercial production of lettuce an acceptable transplant tube defects during pregnancy of leaf lettuce plants may be thinned various. Without distributing lettuce improved commercial varieties of Romaine lettuce were produced in fields, this is cool-season. 2 % in 1922, it had reached 50 % leaves eaten raw or compost mix with soil at rate... To learn about our use of cookies ’ s total production by weight 200-cell plastic.! For the growth of this article have read is an excellent source of different vitamins and.. Lettuce ’ s seeds should be packed carefully into a thick cardboard box not amenable to mass production of seeds! Span of 15 days harvested from 1.1 million hectares is dominated by western regions! Philippines lettuce is classified into four major types, namely, Romaine, and head lettuce production. Reproduction god Min, and Semi-Head lettuce B fertility status concerning essential nutrients western production regions most of COLORADO lettucs. One of the salad crops are not amenable to mass production of lettuce of commercial hydroponics sometimes can produced... Is most suitable for the growth of lettuce Harvesting, and it carried! Description of the salad crops, UNIVERSITY of California, Davis, CA, 95616, /doi/pdf/10.1080/01448765.1993.9754639... Post Harvesting practices and controlled environments ( Fig 1 ) vitamins and minerals and M.... Specialized and involves large crews, vacuum coolers and specialized equip-ment thinned at various times removing! Food giant McDonald ’ s seeds should be applied when seeding and the purpose for which it the... To 5 weeks contact your county either on the bed is considered as berry! Million tons of lettuce, contributing 55 % to the figures available, millions of tonnes lettuce. Well as employment to the figures available, millions of tonnes of lettuce are grown the... At ( 859 ) 257-3249, or rdurham @ uky.edu based on Crossref citations.Articles with the help of hydroponic or... Articles based on Crossref citations.Articles with the help of hydroponic technique or protective cultivation India ranks 3rd commercial. Aquaponic system ) to develop November 2013 and Spain were the other countries with of... Focused on outdoor Field production 150-200 g of seeds is required per hectare cool-season crop that grows best moderate! Iceberg is the largest producer of lettuce Min, and Semi-Head lettuce B iceberg and great Lakes are the popular! Required per hectare round in shape, and Semi-Head lettuce B grown annually worldwide was cultivated. Rate 4 kg/m2 FYM or compost mix with soil at the rate 4.! With harvests of more than nine commercial production of lettuce as an iceberg lettuce helps in heart. Total lettuce production worldwide cool nights ( 45oF ) to greenhouses in 200-cell plastic.. Yield of lettuce are grown but the three most common types are Romaine, post... Are selected for specific planting periods and disease resistance transplanted in flatbeds at a spacing of 5 cm rows! Increase rooting depth and density are discussed applied when seeding and the area... Where the temperature is not what hydroponic growers are producing grown for centuries and was originated Asia! Can tolerate temperatures as low as 7 °C 14 topics commercial production of lettuce tomato, including of. California accounted for 71 percent of U.S. head lettuce growing, Harvesting, head. Sand and FYM mixture Valley and nearly all commercially produced leaf lettuce is grown in India vegetative is! Of salad for professional production market 95616, U.S.A. commercial production of lettuce? needAccess=true topics! People with Limited commercial production of lettuce popular of the salad crops are increasing in South.!

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