Effect of Introducing Nematode-Resistant Sweet Potato Cultivars on Crop Productivity and Nematode Density in Sweet Potato-Radish Double-Cropping Systems

被引：5

作者：

Suzuki, Takayuki ^{[1
,4
]}

Kobayashi, Tooru ^{[1
]}

Adachi, Katsuki ^{[1
,4
]}

Mochida, Hideyuki ^{[2
]}

Iwahori, Hideaki ^{[3
,4
]}

Tateishi, Yasushi ^{[3
]}

Uesugi, Kenta ^{[3
]}

机构：

[1] Natl Agr & Food Res Org NARO, Kyushu Okinawa Agr Res Ctr, Upland Farming Res Div, Miyazaki 8850091, Japan

[2] NARO Tohoku Agr Res Ctr, Lowland Farming Div, Akita 0140102, Japan

[3] NARO Kyushu Okinawa Agr Res Ctr, Agroenvironm Res Div, Kumamoto 8611192, Japan

[4] Kyushu Univ, Collaborat Div, Grad Sch Bioresource & Bioenvironm Sci, Higashi Ku, Fukuoka 8128581, Japan

来源：

PLANT PRODUCTION SCIENCE | 2012年 / 15卷 / 01期

关键词：

Double-cropping system; Nematode-resistant cubivar; Radish; Root-knot nematode; Sweet potato; ROOT-KNOT NEMATODES; MELOIDOGYNE-INCOGNITA; NEMATICIDES; YIELD;

D O I：

10.1626/pps.15.48

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The root-knot nematode (RKN) is a significant pest in upland farming. We studied the effects of introducing nematode-resistant sweet potato cultivars on crop yield, crop quality, and R101 population dynamics in sweet potato-radish double-cropping systems. Three cropping systems with and without nematicide treatment (6 systems in total) were arranged for a 4-yr field experiment from 2003 to 2006. In two nematode-suppressive cropping systems, highly nematoderesistant J-red, (J) or Sunny red (S) and moderately nematode-resistant Kyushu No. 139 (K139) or Murasakimasari (M) sweet potato cultivars were cropped in alternate years beginning with the former and the latter, and in the non-nematode-suppressive cropping system, nematodesusceptible Kokei No. 14 (K14) and M were cropped in alternate years beginning with the former, from 2003 to 2005. In all cropping systems, K14 was cropped in 2006 to estimate the nematodesuppressive effect of the preceding 3-yr cropping. Introduction of J and S to the cropping system decreased the number of RRNs. In 2006, the extent of injury of 1(14 was decreased in nematodesuppressive cropping systems. The RKN population density, however, recovered during the cropping of 1(14 even after cropping of J or S or after nematicide treatment. This suggests that the effects of these measures last for only 1 yr. Nematode injury in radish decreased after nematicide treatment and after cropping of highly nematode-resistant J or S. These results indicate that the introduction of nematode-resistant sweet potato cultivars in cropping systems is effective for reduction of agrochemical use for sustainable agriculture.

引用

页码：48 / 56

页数：9

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