EFFECT OF WATER STRESS AND FERTILIZATION ON COTTON PRODUCTIVITY UNDER CALCAREOUS SOIL CONDITIONS | ||
| Zagazig Journal of Agricultural Research | ||
| Article 1, Volume 46, Issue 2, March and April 2019, Pages 251-264 PDF (609.69 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/zjar.2019.33381 | ||
| Authors | ||
| Mahmaud Gomaa* 1; A. E. Ibrahim1; M. A. Emara2; A. A. Kattosh2 | ||
| 1Plant Prod. Dept., Fac. Agric. (Saba Basha), Alex. Univ., Egypt | ||
| 2Agron. Dept., Cotton Res. Ins., Agric. Res. Cent., Giza, Egypt | ||
| Abstract | ||
| Two field experiments were carried out at the Farm of Nubaria Agricultural Research Station, Agricultural Research Center (ARC), Giza, Egypt, representing the newly reclaimed desert land of North West, Egypt in Nubaria, which located at 46 Km South West of Alexandria city to study the effect of irrigation regimes and NPK fertilization, earliness parameters, seed cotton yield, its components of Egyptian cotton (Gossypium barbadense L.) cultivar Giza 94 was used which represent long staple Egyptian cotton category in the two summer growing seasons of 2017 and 2018. The experimental design was a split-split plot with four replications, where the irrigation regime treatments were allocated to the main plots and the sub-main plots included NPK fertilization, while foliar application treatments were taken place in sub-sub plots, where irrigation regimes were irrigation at 50% depletion of available soil moisture. (I1), irrigation at 70% depletion of available soil moisture (I2) and irrigation at 90% depletion of available soil moisture (I3). While NPK-fertilizer rates were 100% of NPK recommended doses (75 kg N, 31 P2O5 and 48 K2O/fad.), 75% of NPK recommended doses (56.3 kg N, 23.3 P2O5 and 36 K2O/fad.) and 50% of NPK recommended doses (37.5 kg N, 15.5 P2O5 and 24 K2O/fad.). Foliar application treatments were control (water), potassium silicate (two times at the rate of 1 kg/fad., before flowering and two weeks later), extractable mixed of algae, amino acids and micronutrients (two times at the rate of 1 L/fad., before flowering and two weeks later).The results revealed that growth and yield attributes of cotton were affected by water stress under NPK fertilization and foliar application, in this respect the highest value of growth, yield characters were achieved under irrigation regime (50% depletion of available soil moisture) and recommended dose of NPK and foliar application of Algal extracts + amino acids + micronutrient) under Nubaria conditions. | ||
| Keywords | ||
| Egyptian; Cotton; Water stress; NPK; yield; and its components | ||
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