EFFECT OF GROWTH REGULATOR (GIBBERELLIC ACID) ON SOME BIOCHEMICAL OF GLOBE ARTICHOKE AND ITS RELATION TO POPULATION DENSITY OF SOME ASSOCIATED PESTS.

Abd EI-Wahab, Horya A.

doi:10.21608/jppp.2003.251426

EFFECT OF GROWTH REGULATOR (GIBBERELLIC ACID) ON SOME BIOCHEMICAL OF GLOBE ARTICHOKE AND ITS RELATION TO POPULATION DENSITY OF SOME ASSOCIATED PESTS.

Document Type : Original Article

Author

Horya A. Abd EI-Wahab

Plant Protection Res. Inst. ARC. Dokkl, Egypt.

10.21608/jppp.2003.251426

Abstract

Experiment was conducted at Giza governorate during two successive
seasons 2002 12001 and 2001 12002 to study the effect of Gibberellic acid (GA3) on
earliness, carbohydrates. total nitrogen, soluble solids, total acidity, sugar fractions
and Inulin. The obtained data indicated that treatment with GA3 increased the
population of Aphis gossypii Glover; Myzus persicae Sulzer; Bemisia tabaci Genn.
Paradoxically the population of Acanthiophilus he/ianthi Rossi and Thrips tabaci Lind.
was decreased. GA3 gave a highly significant in earliness of blooming; early and total
yield and carbohydrate fractions in growing shoots in both seasons. Also. reducing
and total sugar percentages were increased.On the other hand. C/N ratio; total nitrogen content in leaf. total solublesolids; acidity; inulin and non reduced sugar were no affected for both early and total
yield.