Growth and nutrient and nitrate accumulation of lettuce under different regimes of nitrogen fertilization. (27th August 2019)

• Record Type: Journal Article
• Authors: Zandvakili, Omid R.; Barker, Allen V.; Hashemi, Masoud; Etemadi, Fatemeh; Autio, Wesley R.; Weis, Sarah
• Is Part Of: Journal of plant nutrition. Volume 42:Number 14(2019)
• Page Start: 1575
• Page End: 1593
• Publication Date: 2019-08-27
• Subjects: lettuce varieties -- Nutrient concentration -- Organic fertilizer -- Nitrate-N -- Biomass; Plants -- Nutrition -- Periodicals; Plants -- Effect of minerals on -- Periodicals; Deficiency diseases in plants -- Periodicals; 575.76
• DOI: 10.1080/01904167.2019.1617313
• Languages: English
• ISSNs: 0190-4167

Abstract

Abstract: For plant growth and composition, the effects of fertilizers including blood meal (BLO), cottonseed meal (CSM), dehydrated cow manure (COW), and urea (UREA) factored with lettuce ( Lactuca sativa L.) of different morphological phenotypes including iceberg, romaine, loose head, and loose leaf were studied in a greenhouse. Lettuce growth increased with increasing nitrogen (N) applications from 0 to 800 mg N/pot (kg), but the top application of BLO, CSM, or UREA suppressed yields. Lettuce grown with BLO, CSM, or UREA had higher concentrations of N than with COW. Nitrate-N concentration in leaves of all varieties exceeded some standards at high application of organic fertilizer or urea except for COW. In general, increasing N application resulted in higher concentration of NH4 -N in lettuce with increases in applications of fertilizers. Organic fertilizers and urea were equally effective in supporting growth and affecting nutrient accumulation in lettuce if sufficient N was supplied.