カンジョウ ハクヒ ニヨル アカマツ ノ サシキ ニツイテ ダイ2ホウ α NAA オヨビ ソノタノ ヨウイン ノ コウカ
Experiments of cuttings by ringing "Akamatsu" shoots (pinus densiflora Sieb. Et Zucc.)(II) : Effects of α-NAA and other factors
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The authors set cuttings of current year shoots of ca. eleven years old Akamatu on two sorts of bed, i.e. sand beds and Kibi soil-beds. They were ringbarked three weeks before and treated witlh six sorts of α-Naphthaleneacetic Acid solutions by the planting. Results obtained are as follows ;
1. rooting ratio was higher on a sand bed than on a Kibi soil-bed,
2. they couldn't find a remarkable difference in rooting ratio among cuttings treated by different dilution of α-Naphtaleneacetic Acid,
3. because they found vigorous roots on cuttings taken from certain trees and poor roots on the others. they suppose the rooting abilty were inherent in these trees.
The Shimane Agricultural College