Plant density; plant growth retardants: Its direct and residual effects on cotton yield and fiber properties

Zakaria M. Sawan, Raffaele Dello Ioio
2016 Cogent Biology  
Foliar sprays of (PGR's) Cycocel and Alar were applied at concentrations of 250, 500, and 750 ppm after 105 days after plantation (square and boll setting stage) to Egyptian cotton cultivar planted at three plant densities (166.000, 222.000, and 333.000 plant ha −1 ). Number of opened bolls plant −1 , seed-cotton yield plant −1 , and earliness increased as plant density decreased in both years, as did seed-cotton and lint yield ha −1 in the second season. In the first year, the intermediate
more » ... he intermediate plant density gave highest yields. Plant density had no significant effect on lint percentage or fiber properties. Both Cycocel and Alar increased the number of opened bolls plant −1 , boll weight, seed and lint indices, seed-cotton yield plant −1 and both seed-cotton and lint yield ha −1 , but effects were not always significant and response varied for different traits. Neither Cycocel nor Alar affected lint percentage, yield earliness or fiber properties at any plant density. Effect of different rates and application systems of nitrogen fertilization and indole-3-butyric acid on Egyptian cotton growth and yield. Effect of organic fertilizer and micro-nutrient treatments on cotton agronomy and fiber characteristics of Giza 69. Effect of concentration and time of application of the defoliant Harvade on the lint, seed, protein and oil yields, and oil properties of cottonseed. Effect of 1-naphthalene acetic acid and Kinetin on yield and fiber properties, seed, protein, oil, and fatty acids of Egyptian cotton. Plant growth retardants, plant nutrients, and cotton production. Plant density; plant growth retardants: its direct and residual effects on cotton yield and fiber properties. Plant nutrition and plant growth retardants: their effects on cottonseed, protein, oil yields, and oil properties. Direct and Residual affects of Plant Nutrition's and Plant Growth Retardants, on Cottonseed. Studying the nature relationships between climatic factors and cotton production by different applied statistical methods.
doi:10.1080/23312025.2016.1234959 fatcat:wqvwfckiivhitnidmwwekq3cai