Nitrogen Cycling and Management for Romaine and Crisphead Lettuce Grown on Organic Soils

Figure 1.  Examples of healthy lettuce (left) and N-deficient lettuce (right). Credit: L. SantosLettuce has rapid growth and reaches harvest in 60–70 days in South Florida. This leads to high demands for nitrogen fertilization during the short growing season. A good N fertilization scheme should reduce costs, conserve natural resources, and minimize negative environmental impacts. The keys to using fertilizer efficiently are understanding the crop nutrient requirements to predict fertilizer needs and management as well as knowing the appropriate amounts to apply. Lettuce growers also need to know the nutritional status of the crop through soil and plant tissue testing. This 4-page fact sheet was written by Luis Santos, Alan L. Wright, Yigang Luo, Huangjun Lu, and D. Calvin Odero, and published by the UF Department of Soil and Water Science, September 2013.
http://edis.ifas.ufl.edu/ss588

Nitrogen Cycling and Management for Romaine and Crisphead Lettuce Grown on Organic Soils

Figure 1. Examples of healthy lettuce (left) and N-deficient lettuce (right). Credit: L. SantosLettuce reaches harvest in 60–70 days in South Florida. This short growing season leads to high demands for nitrogen fertilization to maintain adequate plant-available N concentrations in the soil. Growers need to supply the required amounts of N to obtain high yields. Lettuce growers also need to know the nutritional status of the crop through soil and plant tissue testing. This 4-page fact sheet was written by Luis Santos, Alan L. Wright, Yigang Luo, Huangjun Lu, and D. Calvin Odero, and published by the UF Department of Soil and Water Science, September 2013.
http://edis.ifas.ufl.edu/ss588

SL323/SS535 Spring Mix: An Emerging Crop for Florida

SL323, a 3-page illustrated fact sheet by Santiago Rosaro, Alan L. Wright, David D. Sui, Nikol Havranek, and Yigang Luo, describes the components of spring mix, explains the reasons why consumers are looking for these mixes, and why growers in the Everglades Agricultural Area of Florida are producing them. Published by the UF Department of Soil and Water Science, June 2010.
http://edis.ifas.ufl.edu/ss535