Oilseed rape crops as a source of cabbage root fly infestations for cruciferous vegetable crops

2020 ◽  
pp. 61-66
Author(s):  
G. Skinner ◽  
S. Finch
Keyword(s):  
Oilseed Rape ◽  
Vegetable Crops ◽  
Cruciferous Vegetable ◽  
Cabbage Root Fly

scholarly journals INSECTICIDAL JOINT ACTION OF TERNARY EXTRACT MIXTURES OF FOUR SPECIES OF TROPICAL PLANTS AGAINST Plutella xylostella AND Crocidolomia pavonana

2021 ◽  
Vol 21 (1) ◽  
pp. 34-42
Author(s):  
Djoko Prijono ◽  
Maya Anggraini ◽  
Sri Riski Maryani ◽  
Eliana Diana Surya
Keyword(s):  
Plutella Xylostella ◽  
Joint Action ◽  
Diamondback Moth ◽  
Ternary Mixtures ◽  
Botanical Insecticides ◽  
Vegetable Crops ◽  
Tropical Plants ◽  
Cruciferous Vegetable ◽  
Tropical Plant ◽  
Concentration Ratios

Insecticidal joint action of ternary extract mixtures of four species of tropical plants against Plutella xylostella andCrocidolomia pavonana. The diamondback moth (DBM), Plutella xylostella, and the cabbage head caterpillar (CHC),Crocidolomia pavonana, were two main pests of cruciferous vegetable crops. Among the viable alternative ingredients thatcould be utilized to control those two pests were eco-friendly botanical insecticides. This study was conducted to evaluatethe joint action of ternary extract mixtures of four tropical plant species, i.e. Piper aduncum (Pa), Piper retrofractum (Pr),Sapindus rarak (Sr), and Tephrosia vogelii (Tv), against DBM and CHC. Results of leaf-residue feeding bioassays showedthat based on co-toxicity ratio at both LC 50 and LC levels, ternary mixtures of Pa extract with Sr and Tv extracts at concentrationratios of 1:5:1, 1:5:2, and 2:5:1 indicated synergistic joint action on DBM larvae. A mixture of Pa, Sr and Tv extracts at a ratio of2:5:1 was also synergistic to CHC at both LC level but antagonistic at the LC 95 50 95 and LC 95 levels. This mixture at the 1:5:1 ratio was synergistic on CHC at the LC level whereas at the 1:5:2 ratio was antagonistic to CHC at both LC levels. Furthermore, ternary mixtures of Pr extract with Sr and Tv extracts at the three concentration ratios were synergistic to CHC. Thus, ternary mixtures of Pa or Pr extract with Sr and Tv extracts at appropriate concentration ratios are potential alternatives for the control of DBM and CHC.

scholarly journals Occurrence of Clubroot in Cruciferous Vegetable Crops and Races of the Pathogen in Korea

2003 ◽  
Vol 19 (1) ◽  
pp. 64-68 ◽  
Author(s):  
Weon-Dae Cho ◽  
Wan gyu Kim ◽  
Kenji Takahashi
Keyword(s):  
Vegetable Crops ◽  
Cruciferous Vegetable

scholarly journals Quality Control Techniques and Related Factors for Hydroponic Leafy Vegetables

HortScience ◽  
2019 ◽  
Vol 54 (8) ◽  
pp. 1330-1337
Author(s):  
Jinghua Guo ◽  
Yan Yan ◽  
Lingdi Dong ◽  
Yonggang Jiao ◽  
Haizheng Xiong ◽  
...  
Keyword(s):  
Oilseed Rape ◽  
Leafy Vegetables ◽  
Soluble Solids ◽  
Vegetable Production ◽  
Vegetable Crops ◽  
Related Factors ◽  
Free Treatment ◽  
Important Field ◽  
Supplementary Lighting ◽  
Bad Weather

Hydroponics has been an increasingly important field of vegetable production. However, a big issue with hydroponics is that certain crops can quickly accumulate high levels of nitrate-N (NO3 ± -N) from the hydroponic system. The objective of this research was to decrease NO3 accumulation and increase the nutritional value and yield of vegetable crops using lettuce and oilseed rape as a model under hydroponic production. In this study, two technologies were applied to leafy vegetable production: 1) using supplementary lighting (blue-violet diode) by manipulating illumination and 2) removing fertilization before harvest for a short term (3 or 5 days), thus providing a practical experiment for improving yield and edible qualities of hydroponic leaf vegetable production. Illumination was applied 4 hours a day (0500–0700 hr and 1700–1900 hr) during good weather, or 12 hours a day during bad weather with insufficient natural light (<2000 lux) during the autumn and winter seasons. Results showed that the lettuce cultivar Ou-Luo and the oilseed rape cultivar Ao-Guan Pakchoi had increased yield (50.0% and 88.3%, respectively), decreased NO3 content (26.3% and 30.8%, respectively), and increased total soluble solids (24.1% and 30.6%, respectively). The 5-day fertilizer-free treatment before harvest resulted in 19.2%, 6.4%, and 16.5% yield increases; and 26.0%, 24.3%, and 47.8% NO3 decreases in oilseed rape cultivar Ao-Guan Pakchoi and lettuce cultivars Da-Su-Sheng and Ou-Luo, respectively.

Cruciferous Vegetable Crops

2021 ◽  
pp. 311-317
Author(s):  
Parvatha P. Reddy
Keyword(s):  
Vegetable Crops ◽  
Cruciferous Vegetable

GLUCOSINOLATE CONTENT OF CRUCIFEROUS VEGETABLE CROPS

1977 ◽  
Vol 57 (4) ◽  
pp. 1227-1230 ◽  
Author(s):  
W. J. MULLIN ◽  
M. R. SAHAS-RABUDHE
Keyword(s):  
Glucosinolate Content ◽  
Cruciferous Vegetables ◽  
Vegetable Crops ◽  
Thiourea Derivative ◽  
Cruciferous Vegetable

A study of the glucosinolate content of seven common cruciferous vegetables showed wide variation between crops and, in some cases, between cultivars. High progoitrin levels were found in rutabaga (Brassica napobrassica Mill.). Glucosinolates that hydrolyze to give ionic thiocyanate were present in all samples analyzed. Rapine broccoli (B. oleracea var. italica Plenck) had the highest content of thiourea derivative.

INSECTICIDAL JOINT ACTION OF TERNARY EXTRACT MIXTURES OF FOUR SPECIES OF TROPICAL PLANTS AGAINST Plutella xylostella AND Crocidolomia pavonana

2021 ◽  
Vol 21 (1) ◽  
pp. 34-42
Author(s):  
Djoko Prijono ◽  
Maya Anggraini ◽  
Sri Riski Maryani ◽  
Elina Diana Surya
Keyword(s):  
Plutella Xylostella ◽  
Joint Action ◽  
Diamondback Moth ◽  
Ternary Mixtures ◽  
Botanical Insecticides ◽  
Vegetable Crops ◽  
Tropical Plants ◽  
Cruciferous Vegetable ◽  
Tropical Plant ◽  
Concentration Ratios

The diamondback moth (DBM), Plutella xylostella, and the cabbage head caterpillar (CHC), Crocidolomia pavonana, were two main pests of cruciferous vegetable crops. Among the viable alternative ingredients that could be utilized to control those two pests were eco-friendly botanical insecticides. This study was conducted to evaluate the joint action of ternary extract mixtures of four tropical plant species, i.e. Piper aduncum (Pa), Piper retrofractum (Pr), Sapindus rarak (Sr), and Tephrosia vogelii (Tv), against DBM and CHC. Results of leaf-residue feeding bioassays showed that based on co-toxicity ratio at both LC50 and LC levels, ternary mixtures of Pa extract with Sr and Tv extracts at concentration ratios of 1:5:1, 1:5:2, and 2:5:1 indicated synergistic joint action on DBM larvae. A mixture of Pa, Sr and Tv extracts at a ratio of 2:5:1 was also synergistic to CHC at both LC level but antagonistic at the LC 95 50 95 and LC 95 levels. This mixture at the 1:5:1 ratio was synergistic on CHC at the LC level whereas at the 1:5:2 ratio was antagonistic to CHC at both LC levels. Furthermore, ternary mixtures of Pr extract with Sr and Tv extracts at the three concentration ratios were synergistic to CHC. Thus, ternary mixtures of Pa or Pr extract with Sr and Tv extracts at appropriate concentration ratios are potential alternatives for the control of DBM and CHC.

The Biology of Canadian Weeds. 140. Hesperis matronalis L.

2009 ◽  
Vol 89 (1) ◽  
pp. 191-206 ◽  
Author(s):  
A. Francis ◽  
P. B. Cavers ◽  
S. I. Warwick
Keyword(s):  
United States ◽  
New England ◽  
The United States ◽  
Vegetable Crops ◽  
Alternate Host ◽  
Conservation Areas ◽  
Cruciferous Vegetable ◽  
Hesperis Matronalis ◽  
Garden Plant ◽  
The 19Th Century

The cruciferous weed Hesperis matronalis, dame's rocket (Brassicaceae), is an introduced Eurasian garden plant that began to escape shortly after its introduction to North America in the 19th century. It has gradually become naturalized across Canada and the United States, and has become invasive. It is not a major weed of crops, but is widespread in natural and conservation areas, particularly in thickets, open woodlands, forest margins and along streambanks, in parts of eastern and southern Ontario and western Quebec in Canada, and in New England and the midwest in the United States. In these habitats it can crowd out native vegetation and subsequently reduce biodiversity. Serving as an alternate host to a number of viruses, the species has the potential to infect cruciferous vegetable crops and garden plants. Despite its invasive potential, it continues to be sold at garden centres in both Canada and the United States. Key words: Hesperis matronalis, dame's-rocket, julienne des dames, weed biology, invasive alien, HEVMA

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