Effect of Potassium Silicate and NPK Fertilization Levels on Cotton Growth and Productivity under Different Sowing Dates | ||||
| Egyptian Journal of Agronomy | ||||
| Article 12, Volume 40, The15th International Conference on Crop Science, November 2018, Page 115-123 PDF (535.25 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/agro.2019.5681.1128 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
M. A.A. Emara  1; S. A.F. Hamoda1; M. A. Hamada2
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| 1Cotton Research Institute, Agricultural Research Center, Giza, Egypt | ||||
| 2Agronomy Depart, Faculty of Agriculture, Ain Shams University, Cairo, Egypt | ||||
| Abstract | ||||
| A field experiment was carried out in El-Gemmeiza Agric. Res. St., ARC, El-Gharbiya Governorate, during 2016 and 2017 seasons to study the effect of potassium silicate mineral or organic and different NPK fertilizer levels on growth and productivity of Egyptian cotton variety Giza 86 under different sowing dates. The experiment design was a split plot with four replications. The main plots had two sowing dates; (Early at 8th April and Late at 8th May) and the sub plots had nine treatments (1- 100% NPK Control, 2- 100% NPK + potassium silicate mineral, 3- 100% NPK + potassium silicate organic, 4- 125% NPK, 5- 125% NPK + potassium silicate mineral, 6- 125% NPK + potassium silicate organic, 7- 75% NPK, 8- 75% NPK + potassium silicate mineral and 9- 75% NPK + potassium silicate organic). The most important results obtained could be summarized as follows: 1) Sowing date had a significant effect on growth, earliness, seed cotton yield and its components, where, the early sowing date surpassed the late sowing date. 2) The levels of NPK 125% + foliar with potassium silicate organic sprayed three times at squaring, initiation of flowering and two weeks after flowering had significant effect on growth, seed cotton yield/fad and its components. 3) The interaction between sowing dates, NPK fertilizer levels with potassium silicate treatments had only significant effect on plant high and no. of sympodia/plant. 4) All treatments (sowing dates, levels of NPK 125% + foliar with potassium silicate and the interaction) wave exhibited any significant effect on all fiber properties. Generally, from the results obtained revealed that early sowing date in combination with the NPK fertilizer (125%) and foliar with potassium silicate organic sprayed three times at squaring, initiation of flowering and two weeks after flowering for obtaining gave the high productivity of Egyptian cotton variety Giza 86 in clay loam soil. | ||||
| Keywords | ||||
| Cotton; sowing dates; fertilizer; potassium silicate; Growth | ||||
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