Ahmad, Sahar T. A.

Interaction between fertilizers and acetamprid used in control whitefly, Bemisia tabaci (GENN.) in tomato plants [electronic resource] التداخل بين الأسمدة و الأسيتامبريد المستخدم فى مكافحة الذبابة البيضاء (Bemisia tabaci GENN.) فى نبات الطماطم - 2023 - 483 - 492 p.

Includes bibliographic reference

Tomato is the most widely grown vegetables in the world and also the most
important item of the vegetables processing sector. Tomato is important vegetable plant in our
agriculture map which used as food in many countries of the world and especially Egypt. It infested
with many pests, among of the most serious pest, whitefly, Bemisia tabaci (Genn.) (Homoptera:
Aleyrodidae). This work was aimed to study effectiveness of acetamprid alone and binary mixtures
with oil and foliar fertilizer against whitefly larvae mortality, egg hatchability (under laboratory
condition) and yield of tomato plants. The results showed that in case of egg hatchability, adding
fertilizer to oil, fertilizer to acetamprid and oil to acetamiprid cause decreased in hatchability
percentage compared with other treatments. Also, the results illustrated that adding of fertilizer to
acetamiprid or oil causing increasing in reduction percentage to B. tabaci larvae. In case of initial
effect when adding fertilizer to acetamiprid cause increasing mean reduction percentage to 92.61%
recording the first superior treatment. The results showed that adding foliar fertilizer to oil or
acetamprid and oil to acetamprid recorded 85.48, 83.12 and 77.95% reduction, respectively. In case of
tomato yield during two summer successive seasons 2016 and 2017, the results reported that the
tomato yield increased when adding oil to acetamprid recorded 609.45 Kg during 2016 season with
increasing value of 40.17% compared with control and other treatments, but control record the lowest
yield (433.09 kg). During 2017 summer season, adding oil to acetamiprid recorded superior yield of
621.53 kg with increasing 35.53% compared with control. Impact of adding oil and fertilizer on
residues of acetamprid on tomato fruits (washed and unwashed): Unwashed fruits in case of
acetamiprid alone recorded residues up to maximum residue limit until 12 days from spray but
addition fertilizer or oil to acetamiprid cause disappearance acetamiprid in 9th day from spray. Wash
using water or acetic acid caused speed disappearance to acetamprid.
Key words: Tomato, Yield, whitefly, acetamprid, oil, fertilizer, residues.


Summary in Arabic


Tomatoes--Yields
Aleyrodidae--Control
Sweetpotato whitefly--Control