Walnuts, with shell - yield reached 31,429 hg/ha in 1988 in Yemen, according to . This is 4.76% more than in the previous year.
Historically, Walnuts, with shell - Yield in Yemen reached an all time high of 36,000 hg/ha in 1986 and an all time low of 26,000 hg/ha in 1982.
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