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- W123397003 abstract "In glasshouse trials to study the effects of lime on soil P availability, Pangola grass, grown in surface and subsoils that had large amounts of residual P of low availability, responded markedly to applied P. particularly in the subsoils. The amounts of applied P necessary for maximum yields were calculated to be 290 ppm for the limed and 348 ppm for the unlimed soils. In the untreated surface soils, forage growth improved with time as the grass developed more extensive root systems, but it remained extremely poor in the subsoil where P was omitted. Applied P enhanced root growth and remained available to plants for 1 year after application. Forage P concentrations were low (0.03 to 0.12%), even at high rates of applied P. The recovery of applied P in the forage ranged from 3.4 to 14% and depended on lime and P rates. Forage yields decreased with increase in lime rates, regardless of the rate of P applied. Lime had an unfavourable effect on root growth. Forage Mn concentrations were markedly reduced in the limed soils but this did not appear to be the cause of depressed plant growth. Lime injury may have been partly overcome by replacing 50% of the CaCO3 by MgCO3" @default.
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- W123397003 date "1973-01-01" @default.
- W123397003 modified "2023-09-27" @default.
- W123397003 title "Effects of lime and phosphorus on selected alluvial entisols from eastern Costa Rica. 2. Forage plant responses" @default.
- W123397003 hasPublicationYear "1973" @default.
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