REDUCE THE ADVERSE IMPACT OF HIGH TEMPERATURE ON THE GREEN GARLIC PRODUCTION FOR EXPORT

Document Type : Research articles.

Authors

1 Potato and Vegetatively Propagated Vegetables Dep., Hort. Res., Inst., A.R.C., Giza, Egypt

2 Central Laboratory for Agricultural Climate, Agricultural Research Center (CLAC), Giza, Egypt

Abstract

This work was carried out at a private farm in Tokh, Kalubia,
Gov., Egypt during the two successive seasons of 2013/14 and 2014/15,
using randomized complete block design with three replications to study
the effect of pre-soaking seed cloves and foliar spray of silicon (Si),
selenium (Se) concentrations and their combinations on germination,
early seedlings growth, marketable and total green yield as well as
chemical constituents of garlic planted under high temperature
conditions of late summer (End of August). The results of this study
showed that planting garlic under high temperature stress lead to drop in
both rate and speed of germination, which reflected on growth and yield.
However, soaking seed cloves in 4 mg/L silicon and/or 2 mg/L selenium
solutions significantly increased in each of percentage, speed and
coefficient velocity of germination as well as seed vigor index compared
with untreated control. The soaking seed cloves in silicon at 4 mg/L. was
found to produce more increase in germination index and early seedlings
growth compared to selenium at 2 mg/L. The highest values of bulb
characters, marketable and total green yield, as well as chemical
constituents were achieved with application both Si and Se together as
combination in a mixture.

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