EI-Shazly,, W., El-Masri, M. (2002). RESPONSE OF COTTON CUL TIVAR GIZA 89 TO PRE- SOWING SOAKING SEED TREATMENTS. Journal of Plant Production, 27(10), 6543-6556. doi: 10.21608/jpp.2002.256521
W. M. O. EI-Shazly,; M. F. El-Masri. "RESPONSE OF COTTON CUL TIVAR GIZA 89 TO PRE- SOWING SOAKING SEED TREATMENTS". Journal of Plant Production, 27, 10, 2002, 6543-6556. doi: 10.21608/jpp.2002.256521
EI-Shazly,, W., El-Masri, M. (2002). 'RESPONSE OF COTTON CUL TIVAR GIZA 89 TO PRE- SOWING SOAKING SEED TREATMENTS', Journal of Plant Production, 27(10), pp. 6543-6556. doi: 10.21608/jpp.2002.256521
EI-Shazly,, W., El-Masri, M. RESPONSE OF COTTON CUL TIVAR GIZA 89 TO PRE- SOWING SOAKING SEED TREATMENTS. Journal of Plant Production, 2002; 27(10): 6543-6556. doi: 10.21608/jpp.2002.256521
RESPONSE OF COTTON CUL TIVAR GIZA 89 TO PRE- SOWING SOAKING SEED TREATMENTS
1Cotton Research lnstltute, Agricuitural Research Center, Ministry of Agriculture, Giza, Egypt.
2Botany Department, National Research Center, Dokki, Cairo, Egypt.
Abstract
Two field experiments were carried out at Gemmeiza Agricultural Research Station, Gharbia Governorate during 2000 and 2001 seasons to study the effect of pre-sowing soaking cotton seed (cv. Giza 89) for 20 hours in solutions of 100 ppm gibberellic acid (GAJ); 1000 ppm ascorbic acid (AA) and an aqueous filtered solution of 2% calcium superphosphate (SP) in comparison with soaking cotton seed in water as a control on the required time to full germination, germination percentage, leaf chemical composition, growth, earliness, yield and yield components of cotton.
Generally, soaking cotton seed in GAJ or in an aqueous filtered solution of SP significantly reduced the required time to full germination as compared with control. Soaking seed in AA decreased also this period but to a less extent. Also, germination percentaqe was significantly affected by soaking seed treatments. Soaking seed. in GA-J and in AA gave the highest values of germination percentage followed by that soaking in an aqueous filtered solution of SP while soaking seed in water (control) gave the lowest value.
In addition, soaking cotton seed treatments gave insignificant effect on leaf macronutrients (N, P, K, Ca and Mg) and copper concentrations at 120 days old. However, soaking cotton seed· treatments significantly affected leaf Zn and Mn concentrations in favour of soaking seed in an aqueous filtered solution of SP. Leaf Fe concentration was significantly affected by soaking seed treatments but not follow a definite trend.
Soaking seed in an aqueous filtered solution of calcium superphosphate significantly increased the root dry weight! plant, fruiting parts dry weight! plant, total dry weight! plant, leaf area! plant and leaf area index at 120 days old as compared with soaking cotton seed in water (control). In addition, soaking cotton seed in the three experienced solutions (GAJ, AA and SP) significantly increased plant height at harvest and number of main stem internodes as compared with soaking cotton seed in water (control) .
Soaking cotton seed in an aqueous filtered solution of calcium superphosphate produced the highest values of number of open bolls! plant, seed cotton yield! plant as wp.1I as seed cotton yield! fed. in both seasons as compared with other treatments. Whereas, soaking cotton seed in GAJ gave the highest number of plants! feddan at harvest followed by soaking seed in AA or in SP while soaking seed in water (control) gave the lowest number.
The results concluded that pre-sowing soaking of fuzzy cotton seed in an aqueous filtered solution of 2%calcium superphosphate for 20 hours is the best treatment for good growth and high productivity of.cotton (cv. Giza 89).
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