Effects of an intercrop on the insect pests, yield, and quality of cabbage

G. Kenny, R. Chapman
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引用次数: 14

Abstract

Abstract A field experiment to investigate the effects of crop diversity on the insect pests and yield of cabbage, Brassica oleracea var. capitata, was carried out at Lincoln College, Canterbury. All treatments were based on a standard cabbage plant spacing of 50 cm within rows and 100 cm between rows. Treatment 1 remained untreated; Treatment 2 was sprayed with 1.0 kg/ha Bacillus thuringiensis (Thuricide HP) at fortnightly intervals; Treatment 3 was intercropped with dill (Anethum graveolens); Treatment 4 was cabbage planted between standard rows, i.e., double the density in Treatment 1. Regular monitoring showed fewer white butterfly (Pieris rapae L.) eggs were laid on cabbages planted at the higher density and fewer alate cabbage aphids (Brevicoryne brassicae L.), occurred on plants intercropped with dill. Diamondback moth (Plutella xylostella L.) was not a prevalent pest. Applications of Bacillus thuringiensis resulted in improved cabbage quality but not increased yields. Lowest ‘per plant’ yields occ...
间作对白菜病虫害、产量和品质的影响
摘要在坎特伯雷林肯学院进行了作物多样性对甘蓝(Brassica oleracea var. capitata)病虫害及产量的影响。所有处理均以行内50厘米、行间100厘米的标准白菜植株间距为基础。治疗1仍未治疗;处理2每两周喷施1.0 kg/ha苏云金芽孢杆菌(杀苏云金杆菌HP);处理3间作莳萝(茴香);处理4在标准行之间种植白菜,即密度为处理1的两倍。定期监测结果显示,高密度种植的白菜上产白蝴蝶卵较少,间作莳蕾的白菜上产白蝴蝶蚜较少。小菜蛾(Plutella xylostella L.)是一种不常见的害虫。苏云金芽孢杆菌的施用改善了白菜的品质,但没有提高产量。“每株”产量最低……
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