Effects of Pinching and Lower Branch Pruning on Yield of Spears in Semi-Forcing Green Asparagus (<i>Asparagus officinalis</i> L.) Cultivation

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  • アスパラガスの半促成長期どり栽培の収量に及ぼす摘心と下枝除去の位置の影響
  • アスパラガス ノ ハンソクセイ チョウキドリ サイバイ ノ シュウリョウ ニ オヨボス テキシン ト シタエダ ジョキョ ノ イチ ノ エイキョウ

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Abstract

The objective of this study was to establish the cultivation technique for high yield with high profit in mother fern green asparagus (Asparagus officinalis L.) cultivation. Effects of pinching and lower branch pruning on the yield and size of spears were investigated. The marketable yield, especially large (L) class spear yield with high unit price was the highest in both the summer and subsequent spring seasons, when mother ferns are pinched to a 140 cm height with removal of the lower branches at a 50 cm height. The marketable yield in summer spears showed maximum values when the width between pinching and the lowest branch heights was 80~90 cm. The marketable yield of spears in the subsequent spring increased with increases in both the width of pinching and the lowest branch height to 90 cm.<br>

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