シートマルチ栽培した台木別ウンシュウミカン'山川早生'の生育および果実品質(栽培管理・作型)  [in Japanese] Effects of Rootstock on Tree Growth, Yield and Fruit Qualities of 'Yamakawa Wase' Satsuma Mandarin (Citrus unshiu Marc.) under a Normal Bare Ground and Sheet - mulching Culture(Crop Production & Cropping Type)  [in Japanese]

樹勢の異なる4種の台木に接木した極早生ウンシュウミカン'山川早生'を裸地およびシートマルチ栽培した場合の生育および果実品質を2000年(12年生)〜2002年に比較調査した.幹周,樹冠容積および収量は裸地区,マルチ区ともにシイクヮシャー台>トロイヤーシトレンジ台>ラスクシトレンジ台=カラタチ台であった.果実品質では,Brixはシイクヮシャー台のみが低くその他の台木間に有意差はなかった.酸含量についても台木間で有意差は認められなかった.以上のことから,カラタチより強勢で品質低下のないトロイヤーシトレンジが極早生ウンシュウミカン'山川早生'の裸地およびマルチ栽培での台木として有望と思われた.

Effects of rootstocks on tree growth, yield and fruit qualities in very early ripening satsuma mandarin (C. unshiu Marc.) 'Yamakawa wase' were compared between a normal bare ground culture and a sheet-mulching culture from 2000 to 2002. The, ground, for the mulching culture, was covered with a moisture permeable sheet from July through October. The order of trunk growth, canopy volume and yield were 'Shiikuwasha' > 'Troyer citrange' > 'Rusk citrange' = 'Trifoliate orange' rootstock. Although fruit quality such as Brix was low in 'Shiikuwasha', there was no difference among the other rootstocks. Furthermore, there was no difference in titratable acidity among the rootstocks. The 'Troyer citrange', vigorous rootstock with minimal fruit quality decrease, was considered to be a suitable rootstock for very early satsuma mandarin 'Yamakawawase' under a normal bare ground and mulching culture.