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Effect of certain defoliant materials on mulberry trees and silkworm Bombyx mori L. productivity in Jordan [electronic resource].

By:

Al-ghabeish, I

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Language: English Summary language: Arabic Description: p.793-798Other title:

تأثير بعض المواد المسقطة للأوراق على أشجار التوت وإنتاجية ديدان حرير القز [Added title page title]

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Journal of the advances in agricultural researches, 2003 v. 8 (4) [electronic resource].

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In: Journal of the Advances in Agricultural Researches 2003.v.8(4)Summary: In order to harvest mulberry leaves easily from the big and huge trees, formerly cultivated in developing countries, two different materials Ethephone and Naphthalene acetic acid (NAA) were tested in certain concentrations. Results showed that Ethephone at 3000 and 4000 ppm and NAA at 10, 30 and 40 ppm have no effect as defoliants. Ethephone at 6000 ppm proved to be the safe foliar spray, which can be used, since the quality and percentage of dropped leaves was the best. The fed larvae of Bombyx mori L. on the dropped leaves were not different than those raised on untreated leaves in all measured biological and technological parameters under study.

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In order to harvest mulberry leaves easily from the big and huge trees, formerly cultivated in developing countries, two different materials Ethephone and Naphthalene acetic acid (NAA) were tested in certain concentrations. Results showed that Ethephone at 3000 and 4000 ppm and NAA at 10, 30 and 40 ppm have no effect as defoliants. Ethephone at 6000 ppm proved to be the safe foliar spray, which can be used, since the quality and percentage of dropped leaves was the best. The fed larvae of Bombyx mori L. on the dropped leaves were not different than those raised on untreated leaves in all measured biological and technological parameters under study.

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