Abstract
Field experiments were carried out at the Agricultural Research station, Qualiobeya Governorate during two successive seasons (Summer and Nile Plantation) to investigate the effect of different fertilizers on the squash infestation by different piercing sucking pests and on the resultant yield. Moreover the efficacy of four chemical acaricides (Ortus super, Arrow, Killmite and Vertimec) and two predaceous mites {Phytoseiulus persimilis (Athias–Henriot)and Amblyseius gossypii (El-Badry)against phytophagous mites, Tetranych usurticae Koch,and T. cucurbitacearum (Sayed) atQualiobeya Governorate. Results showed that squash yielded by the Mixture treatment (NPK) fertilizer was higher than other fertilizers in the two seasons and the reduction percentage recorded by using Ortus super and killmite approches that of P. persimilis.
Highlights
Vegetables are very important commodity, most vegetables have a high economical value, and as a source of nutritive food especially vitamins and minerals
Squash is an important source of many nutrients, including vitamin C, potassium, manganese, copper, phosphorous, calcium, iron and other antioxidant compounds
Fertilizer treatments: The tested fertilizers used were: 1- Urea, 46 % N2 is applied at rate 300 kg. /feddan. 2- Calcium super phosphate, 15.5% P2O3 (150 kg/feddan). 3- Potassium sulfate, 47% K2O (100 kg/feddan). 4- A mixture of the 3 previous fertilizers N, P & K at the rate of 300, 150 and 100 kg/feddan, respectively. 5- Micro-elements solved in water as Folifert [Zn 7.06 %; Mn 4.20 %; Fe 2.80 %; Cu 2.0 %; Bo 0.60 % & Mo (Molibidium) 0.05 %]. 6- Mycorrhizal fungi are applied by their mixture with pieces of moisten soil and put on each hill in weight 50.75 gm in the planting date. 7- The Check plots
Summary
Vegetables are very important commodity, most vegetables have a high economical value, and as a source of nutritive food especially vitamins and minerals. Squash is an important source of many nutrients, including vitamin C, potassium, manganese, copper, phosphorous, calcium, iron and other antioxidant compounds. These vitamins and minerals are important antioxidant components in the body, which help to neutralize free radicals throughout the body. Squash contains very high levels of vitamin A, including carotenoid phytonutrients and other important anti-inflammatory and antioxidant compounds. All of this together helps the body to boost its immune response and defend against the foreign substances, Fertilizers are sources of mineral elements which plants required for growth and development. These nutrients, which include nitrogen, phosphorus, potassium, calcium, magnesium and sulfur, are necessary to help plants develop new growth as well as fortifying the structure and defences of the existing plant cells, their deficiencies or excesses result in marked effects on growth and yield crops
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
