Modulating infestation rate of white fly (Bemicia tabaci) on okra (Hibiscus esculentus L.) by nitrogen application

• Autorzy: Athar H.-ur-R. , Bhatti A. R. , Bashir N. , Zafar Z. U. , Abida , Farooq A.
• Języki publikacji: EN

Abstrakty

EN

Pests are major factor affecting the crop yield, quality, and esthetic value. Although pest resistance is genetically controlled, it is mediated through physiological and biochemical processes interrelated with the nutritional status of the plant. Nutrition of plant may determine its resistance or susceptibility to pests. An experiment was conducted to determine whether and up to what extent varying concentrations of N modulate the infesting rate of whitefly on Okra (Hibiscus esculentus). Twenty-one-dayold okra plants were subjected to five concentrations of 4, 8, 12, 16, and 20 mM N for 30 days. Number of eggs, nymph were counted on each plant after every 4 days. Growth and yield of okra plants increased with increasing supply of N but it decreased slightly at the highest level of N (20 mM). Leaf soluble proteins, amino acids, and soluble sugars were determined on fresh weight basis. From these results, it is clear that increasing N level increased the biosynthesis or accumulation of protein, free amino acid, and sugars that might have attracted more whitefly for feeding.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2011
• Tom: 33
• Numer: 3
• Opis fizyczny: p.843-850,fig.,ref.

Twórcy

autor

Athar H.-ur-R.

• Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan 60800, Pakistan

autor

Bhatti A. R.

• Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan 60800, Pakistan
• National Insect Museum, National Agricultural Research Center, Islamabad 45500, Pakistan

autor

Bashir N.

• Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan 60800, Pakistan

autor

Zafar Z. U.

• Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan 60800, Pakistan

autor

Abida

• Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan 60800, Pakistan

autor

Farooq A.

• Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan 60800, Pakistan

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