Hadi, Muhammad Syamsoel and Swibawa, I Gede (2018) ATTACK INTENSITY AND ITS POPULATION OF MAJOR PESTS IN CASSAVA (Manihot esculenta Crantz) BY APPLICATION OF “ZINCMICRO” FERTILIZER. In: Proceeding International Conference on Cassava (Sustainable Management on Renewable Resources in Tropics), 23-24 November 2017, Hotel Emersia.

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The major pests that attack the cassava plant are mealybug and mite. Mealybug (Phenacoccus) can reduce production by 30-80%, while mite (Tetranychus) can reduce production by more than 50% in cassava plantation. This study aims to (1) investigate the intensity of mealybug infestation and mite on cassava with application of “Zincmicro” fertilizer; (2) investigate the population of mealybug and mite on cassava with application of “Zincmicro” fertilizer. This research was conducted in Sulusuban, Seputih Agung, Lampung Tengah, starting from august 2016 until march 2017. This research use direct observation method by scoring the level of pest attack on cassava plantation. The experiment showed that: 1) Application of 20 kg ha “Zincmicro” was significantly lower than without application “Zincmicro”. Increasing the dosage of “Zincmicro” until 40 kg ha -1 did not differ significantly; 2) Although there was no significant different between with and without application “Zincmicro”, application “Zincmicro” tended to be lower in mite attack intensity than without application “Zincmicro”; 3) The population of mealybug was more abundant in the upper leaves; meanwhile, the mite population was more abundant in the lower leaves. Application of “Zincmicro” tended to deacrease the population of mealybug and mite compared to without application “Zincmicro”. Keywords: cassava, mealybug, mites, “zincmicro” fertilizer

Item Type: Conference or Workshop Item (Paper)
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Agroteknolgi
Date Deposited: 29 Apr 2019 04:22
Last Modified: 06 May 2019 06:53
URI: http://repository.lppm.unila.ac.id/id/eprint/11307

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