Effect of Fall and Spring Applied Nitrogen Fertilizer on Growth and Yield of Sugarbeets

Carter, J.N. (1984) Effect of Fall and Spring Applied Nitrogen Fertilizer on Growth and Yield of Sugarbeets. Journal of the American Society of Sugar Beet Technologists. 22(3&4):252-267.

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Abstract

The time and amount of nitrogen (N) uptake affects both root and extractable sucrose yield of sugarbeets (Beta Vulgaris L.). Either excessive or late N fertilizer applications and subsequent plant N uptake from applied or residual N sources cause an increasing proportion of the photosynthate to be used for top growth at the expense of both root dry matter and sucrose accumulation (6, 7). Adequate but not excessive amounts of soil and fertilizer N available early in the growing season are needed for adequate top and root growth, while maintaining sufficiently high sucrose percentage and purity for profitable sucrose extraction and yield. For maximum N efficiency and economy, N fertilizer should be applied either near the time of planting or sidedressed early in the season. This reduces the time between N application and N uptake which allows less opportunity for N to be leached out of the root zone, denitrified, or incorporated into soil microorganisms and their by-products. Fall bedding and fertilization of fields to be used for sugarbeets is a common practice throughout the intermountain area of the western United States. Although this practice increases the time between N application and N uptake, it has the following advantages: 1) possible earlier planting, 2) improved moisture level in the seedbed at planting, 3) less irrigation water is required for germination, 4) more even distribution of labor requirement during the fall and spring months, and 5) more even distribution of fertilizer demand. The objective of this study was to evaluate several rates and times (fall and spring) of N fertilizer application as it affects the location of NO3-N within the soil profile, N uptake, seasonal growth rates, dry matter production, sucrose concentration and accumulation, and the partitioning of the photosynthate.

Item Type: Article
NWISRL Publication Number: 0561
Subjects: Irrigated crops > Sugarbeet
Soil > Amendments > Fertilizer
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:52
Last Modified: 13 Jan 2017 21:09
Item ID: 444
URI: https://eprints.nwisrl.ars.usda.gov/id/eprint/444

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