Influence of certain climatic factors on some major pepper pests under Egyptian conditions

Abstract

Pepper crop (Capsicum annuum,l) is considered one of the most important vegetable crops, under greenhouse conditions. This work aim to study influence of certain environmental factors (Temperature and relative humidity) on population of pepper pests i.e. aphid (Aphis gosspii), white fly (Bemisia tabaci) and spider mites (Tetranychus urticae), through growing seasons 2012 and 2 013, at two different regions (El-Dokki region, Giza governorate and El-Nobria region, Beheria governorate), Egypt. Population of white fly was the most severity compared with other pests, but population of aphid was moderately severity and population of spider mites was less severity. While, population of tested pests were more severity in El-Nobria region (Beheria governorate) than El_Dokki region (Giza governorate). However, population of tested pepper pests were increased with increasing the temperature through studied seasons. Also, population of tested pests were the most severity during the period from May to June compared with the period from January to March for to growing seasons and two regions. Population of all pepper pests were the most severity during may in El_Nobria region (Beheria governorate) during mayjune in El-Dokki region (Giza governorate) Meanwhile, relative humidity was less effectively on population of tested pepper pest through this study.

Plant Growth, Fruit Yield, and Tomato Leaf Curl Disease of High Tunnel Organic Tomato Affected by Shade Net and Plastic Mulch Color

“…HT air temperature does not explain the differences in insect numbers because, except for thrips, which decreased with increasing HT air temperature, HT air temperature was unrelated to insect numbers among shade treatments. In cucumber, there was a positive interaction between virus-transmitting insect incidence with temperature and relative humidity as influenced by shade nets (Maklad et al 2012).…”

“…Field-grown tomatoes in the southeast United States can be severely impacted by the TYLCV transmitted by sweetpotato whitefly [Bemisia tabaci (Gennadius)] (Glick et al 2009;Marchant et al 2020). However, there is limited information on how HT production may impact the incidence and severity of TYLC in tomatoes grown organically (Maklad et al 2012). Maklad et al (2012) reported that virus-transmitting insect vectors such as aphids (Aphis gossypii Glover), thrips (Thrips spp.…”

“…However, there is limited information on how HT production may impact the incidence and severity of TYLC in tomatoes grown organically (Maklad et al 2012). Maklad et al (2012) reported that virus-transmitting insect vectors such as aphids (Aphis gossypii Glover), thrips (Thrips spp. ), and sweetpotato HORTSCIENCE VOL.…”

Comparison between the infestation rate of certain pests on cucumber and kidney bean and its relation with abiotic factors and anatomical characters.

“…Sharma et al, (2013) found that Aphid and whitefly population was positively correlated with the maximum and minimum temperature and negative with maximum and minimum relative humidity. and Maklad et al, (2014) found that the population density of T. urticae was positively correlated with maximum temperature.…”

“…Many issues on the role of host plant, climatic factors and anatomical characters on the infestation rate of the above mentioned pests has been done previously Aslam and Gebara (1996); Shalaby (1998); Foda (2000); Legrand and Barbosa (2003);Wei Hong et al (2003); Deligeorgidis et al (2005); Tantawy,Maha (2006); Hanafy (2007); Lee et al (2011); Abou-Zaid (2013) and Maklad et al (2014).…”