INFLUENCE OF IRRIGATION WATER QUANTITY AND BIOFERTILIZER ON CAULIFLOWER PRODUCTIVITY IN SANDY CALCAREOUS SOIL

Document Type : Research articles.

Authors

1 Horticultural Res. Institute, A. R. C., Giza, Egypt.

2 Central Lab. Organic Agric., A. R. C., Giza, Egypt.

3 Soils, Water and Environment Res. Institute, A. R. C., Giza, Egypt.

Abstract

Water stress adversely affects plant productivity. Plant growth and curd
production of cauliflower are limited under water stress. Hence, this research was an
attempt to determine the effect of water regimes on cauliflower yield, enhance the
productivity in the sandy calcareous soils by using active dry yeast extract or
potassium humate and maximize of the water unite production. The cauliflower
plants have shown varying responses against water regimes, which was irrigation
with 80% of Reference Evapotranspiration (ETo) gives the highest values for all
studied parameters. Moreover, soil applications of active dry yeast extract or
potassium humate had the greatest stimulation effect on plant growth characters
under different irrigation regimes (100%, 80% and 60% of ETo) in compared with
control. The results of the interaction revealed that the second irrigation (80% of
ETo) plus adding active dry yeast extract or potassium humate to soil recorded the
largest curd diameter, biggest curd weight, and also the highest total yield of
cauliflower during 2014/2015 and 2015/2016 seasons, respectively.

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