Hassan, E., Hassan, M., Dakhly, O., Shehata, M. (2008). EFFECT OF DIFFERENT SOURCES OF NITROGEN ON FLOWERING , YIELD AND FRUIT QUALITY OF SQUASH PLANTS.. Journal of Plant Production, 33(8), 5681-5705. doi: 10.21608/jpp.2008.170374
E. A. Hassan; M. A. Hassan; O. F. Dakhly; Mona N. Shehata. "EFFECT OF DIFFERENT SOURCES OF NITROGEN ON FLOWERING , YIELD AND FRUIT QUALITY OF SQUASH PLANTS.". Journal of Plant Production, 33, 8, 2008, 5681-5705. doi: 10.21608/jpp.2008.170374
Hassan, E., Hassan, M., Dakhly, O., Shehata, M. (2008). 'EFFECT OF DIFFERENT SOURCES OF NITROGEN ON FLOWERING , YIELD AND FRUIT QUALITY OF SQUASH PLANTS.', Journal of Plant Production, 33(8), pp. 5681-5705. doi: 10.21608/jpp.2008.170374
Hassan, E., Hassan, M., Dakhly, O., Shehata, M. EFFECT OF DIFFERENT SOURCES OF NITROGEN ON FLOWERING , YIELD AND FRUIT QUALITY OF SQUASH PLANTS.. Journal of Plant Production, 2008; 33(8): 5681-5705. doi: 10.21608/jpp.2008.170374
EFFECT OF DIFFERENT SOURCES OF NITROGEN ON FLOWERING , YIELD AND FRUIT QUALITY OF SQUASH PLANTS.
1Central Laboratory of Organic Agric., Agric. Res. Center, Giza, Egypt
2Faculty of Agriculture, Minia University, Egypt.
Abstract
Field experiments were carried out at farm of Research Center of Agriculture, Mallawy, EL-Minia Governorate, Egypt, during the two successive Autumn seasons of 2003 and 2004 . Squash Cv. "Eskandrany" was selected to study the influence of chemical N rates . organic manure and biofertilizers on yield of squash. Treatments were arranged in split split - plot design in complete randomized block with four replicates. Chemical N rates ( 0.0, 30, 45 and 60 kg N / fed. ) treatment were arranged at random in the main plots .Three organic manure treatments (untreated, chicken manure and sheep manure) were distributed at random in the sub-plots, while three biofertilizer treatments (untreated, T26, T16 ) were distributed at random in sub-sub-plots. All flowers parameters significant affected by chemical N rates and biofertilizers. All interactions among the studied factors had significant effect on flower characters. All yield parameters were significantly affected by the chemical N rates in both seasons, where 45 Kg. N / fed. was obtained the highest value of early yield (kg) / plant , while there is no different between 60 kg N / fed. and 45 kg N / fed. on number of fruits ,average weight of fruit (g.) and total yield (ton/fed.) . NO3 and NO2 concentrations were significantly affected by the chemical N rates in both seasons. T26 decreased NO3 and NO2 concentrations.
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