Response Of Growth, Yield And Fruit Quality Of Tomato (Solanum Lycopersicum L.) To Different Organic Fertilizer Treatments Under Two Pest Control Programs Against Tuta Absoluta In a New Valley-Egypt

Abstract

A field experiment was conducted at Farm of Faculty of Agriculture, New Valley University during 2016/2017 and 2017/2018 to study the impact of some organic fertilizers (poultry, cattle , sheep manures) and mineral fertilizers under, Traditional pest control (TPC) and Integrated pest management (IPM) on growth, yield and fruit quality of tomato cv. Rawan F1. The results indicated that mineral fertilization significantly surpassed organic manures in all vegetative growth characters, yield and yield components. Organic manure treatments significantly increased fruit contents of N, P, K, Ca, Mg, vitamin C, licobin, total soluble solids and total sugars compared to chemical fertilization in both seasons. TPC followed by IPM treatment exhibited best results for all studied characters compared to control , except number of fruits/plant and unmarketable yield, fruit content of carotenoid, total phenol, total flavonoid, water content and acidity. The differences between TPC and IPM programs were insignificant for yield and its components. Furthermore, interaction between chemical fertilization and traditional program gave highest growth and yield parameters, while interaction between poultry manure and traditional program gave fruits higher chemical content compared to other interactions. Based on results, it could be recommended that fertilized tomato plants with mineral treatment under IPM gave the best yield and the highest reduction percentage of infested leaflets with T. absoluta larvae and of adult moths/trap/day, although TPC gave a slight insignificant increment in tomato yield, while soil application of composted poultry manure before tomato planting by 10.76 ton/fed, under TPC improved the quality of tomato fruits.