Krishna Nemali
Purdue University will develop research based and Indiana region-specific information for hydroponic lettuce production in greenhouses and transfer crop production and marketing knowledge to Indiana farmers through effective extension education. Specifically, (i) the proposed research will develop region-specific information by conducting research on the performance of different leaf lettuce varieties for increased productivity, quality…Read more about Greenhouse Hydroponics[Read More]
Read more about Greenhouse Hydroponics
A question many growers are asking is whether vertical farming of hydroponic lettuce production is profitable. Light requirement (daily light integral, DLI) of lettuce can vary from 15-20 mol/m2/day. Lettuce grown under low DLI has slow growth rate (i.e., takes longer to harvest) and appear poor in quality (elongated). Current estimate is that energy costs…Read more about Energy efficient lighting strategies[Read More]
Read more about Energy efficient lighting strategies
Hydroponic lettuce is usually grown by continuously recycling the nutrient solution during production. As nutrients are absorbed by plant roots, stock solution is added to the recycled solution to maintain the electrical conductivity (EC) at a target level. Because plants absorb nutrients from the solution at different rates, the recycled solutions accumulates elements which are…Read more about Nutrient management for hydroponic lettuce using imaging[Read More]
Read more about Nutrient management for hydroponic lettuce using imaging
Hydroponics Workshop II Greenhouse and Indoor based hydroponics for growing green leaf produce is rapidly growing near urban areas in Indiana. To bridge the gap in learning and increase the competitiveness of Indiana and Midwestern growers, Purdue Extension specialists and researchers in the department of Horticulture and Landscape Architecture have developed workshops that provide experiential…Read more about Hydroponic Lettuce Workshop II at Purdue[Read More]
Read more about Hydroponic Lettuce Workshop II at Purdue
Pore space in soilless substrates Do you know that you are mostly paying for ‘pore space’ when buying a bag of soilless substrate? This is because, unlike mineral soils, nearly three-fourth volume of soilless substrates is pore space. I like to refer pore space as the ‘functional’ component of a substrate. By definition, pore space…Read more about Looking through the pores of a soilless substrate[Read More]
Managing plant nutrition based on substrate EC is better than fertilizer solution EC as substrate EC directly measures the amount of nutrients in the root zone. There are both in-house and laboratory based methods of measuring substrate EC. One in-house method that is commonly used is ‘pour-thru’ technique. This technique is rapid, inexpensive and measures…Read more about Pour-Thru Technique of Measuring Electrical Conductivity of the Substrate[Read More]
