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Mae The Fertiliser Manual (RB209) wedi disodli seithfed argraffiad o'r Fertiliser Recommendations (2000). Mae'n cynnwys argymhellion parthed sut i ddefnyddio calch a maetholynnau pwysig (N, P, K, S, Mg, Na) ar y rhan fwyaf o gnydau a dyfir mewn caeau, gan gynnwys cnydau âr, tir glas, llysiau a ffrwythau.
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The Fertiliser Manual (RB209) replaces the old Fertiliser Recommendations 7th edition (2000). It provides recommendations for the use of lime and major nutrients (N, P, K, S, Mg, Na) on most field-grown crops including arable, grassland, field vegetables and fruit. Additionally, it provides details of the content and supply of nutrients from a wide range of organic manures, and provides a wide range of background information on nutrient management.
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