Effects of soil compaction on yield and fertilizer requirement of sugar beet

Abstract

Five experiments (1967-9) on soils formed from calcareous drift examined the effects of soil compaction on seedling emergence and yield of sugar beet, also the interaction between compaction and response to nitrogen fertilizer (N) and phosphate fertilizer (P 2 O 6 ). Some seedbeds were compacted in winter, others in spring and others prepared with the minimum of compaction; each was tested with 0-6, 1-2 and 1-8 cwt/acre N plus 0-8 cwt/acre additional P 2 O 5 . All plots were given a basal dressing of 0-8 cwt/acre P 2 O 6 and enough of other major nutrients.Compaction decreased seedling populations in four experiments but increased it in one year, when the weather was dry while the seeds were germinating. However, in every experiment compaction significantly decreased yield of roots and sugar. It also interacted with the fertilizer treatments, significantly on average, increasing nitrogen requirement and decreasing phosphate requirement. On average, 0-6 cwt/acre N and 1-6 cwt/acre P 2 O 5 gave the greatest yield without compaction and 1-2 cwt/acre N and 0-8 cwt/acre P 2 O 6 with compaction.

Effects of soil density on yield and fertilizer requirement of sugar beet

“…Beet grown on the most compact cultivation treatment responded in terms of increased root and sugar yield to IOO kg ha-l P,O, in 1973 only ( Table 3). This was contrary to the results of Draycott et al (1970) where responses to 200 kg ha-l P,O, were recorded on three of their five sites, the responses being confined to the least compact cultivation treatment.…”

Modification of Cucumber Response to Seed Grading and Nitrogen Source by Soil Compaction1

“…A large proportion of orchard trees is infected with viruses, or other graft-transmissible subcellular agents that incite no surficially discernible response inm ost apple cultivars;however, there are a few cultivars that are sensitive to one or more spe cific agents (1,2,3,4,11,12). Rubbery wood (RW) my co plasm, by reducing lignin in vascular tissues, reduces limb rigidity and strength of Golden Delicious', 'Lord Lambourne', and several other cultivars (9, 12).…”

Growth and phosphorus supply of sugar beet as affected by soil compaction and water tension

“…Compaction is often regarded as a severe problem because sugar beet growth may be impaired and yield diminished (Draycott et al, 1970;Jaggard, 1977). Compaction is often regarded as a severe problem because sugar beet growth may be impaired and yield diminished (Draycott et al, 1970;Jaggard, 1977).…”