The pest thrives well when the conditions are hot and dry, making onions their favourite crop since they grow well in warm and dry conditions.Both the larva and adult thrips
cause damage to onion plants.
The reduction percentage in thrips
population decreased gradually after 96 hrs of spray but remained effective up to one week in all the botanical pesticides.
Feeding potential of spiders Fig.1 shows the feeding potential of four spider species against thrip
. The results indicated that the maximum feeding potential of Thomisus sp.
Highest and lowest eggs count of white fly and thrips
were noted on NIAB non-Bt and MNH-988 accordingly (Supplementary Table I).
Our work reports new records of three thrips
species for mango in Brazil, namely Frankliniella gemina Bagnall, Frankliniella distinguenda Bagnall and Haplotrips gowdeyi (Franklin) (figure 1).
In the vegetative and flowering stages the density of thrips
decreased from the apex to the base of the vines (F = 24.04; df = 1,7; P = 0.0018) (Figs.
A total of 86 plant species belonging to 34 families (Table 1) were sampled for thrips
. Surveys were performed once a month in April, May, June and July 2011; February through August 2012; and February through August 2013.
sjostedti (Salifu, 2001; Alabi et al., 2005; Alabi et al., 2011), however, little has been done on others compounds such as total phenol, tannin, amino acids, reducing sugars and antioxidant activity for all the cowpea reproductive structures (stipules, racemes, floral buds and flowers) in relation to flower bud thrips
resistance since thrips
damage the entire reproductive structures.
After the emergence of maize seedlings, the selected plants were cut close to the ground, placed in plastic bags and taken to the laboratory, where they remained in refrigerator for at least 30 min at a temperature of 6[degrees]C in order to reduce the movement of the thrips
and prevent them to let the plants during the extraction process.
Algunos autores consideran que este dano es solo cosmetico y que no afecta a la planta en su desarrollo fisiologico, ademas consideran que la tasa de renovacion del follaje contrarresta el efecto de los thrips
(Areas-Sevilla & Gonzalez-Lopez, 2008).
Asi et al., (2008) proved that imidacloprid showed better results against cotton thrips
with the mortality of 96.12% at 72 hrs after spray.