Íslenskar landbúnaðarrannsóknir - 01.09.1970, Page 14

Íslenskar landbúnaðarrannsóknir - 01.09.1970, Page 14
12 ÍSLENZKAR LANDBIJNAÐARRANNSÓKNIR 4000g 3000g 2000g 1965 lOOOg / 0 150 250 350 KG N/HA Mynd 4. Áhrif köfnunarefnisáburðar (N) á uppskerumagn í Þykkvabæ 1964—1967. Fig. 4. Influence of increasing nitrogen (N) on yield of potatoes at Þykkvibœr in 1964—1967. 2000g lOOOg 1965 1964 —■ _L 0 150 25Ö 350 KG P205/HA Mynd 5. Áhrif fosfóráburðar (P2O5) á uppskerumagn í Þykkvabæ 1964—1967. Fig. 5. Influence of increasing phosphorus (F-jO-,) on yield of polatoes at Þykkvibœr in 1964— 1967.

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Íslenskar landbúnaðarrannsóknir

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