May 2018 Vol. 6 No.5

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Sawan ZM

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Review

Mineral nutrients and plant growth retardants: Its direct and residual effects of on cottonseed yield and seed quality

Zakaria M. Sawan

Cotton Research Institute, Agricultural Research Center, Ministry of Agriculture and Land Reclamation, 9 Gamaa Street, 12619, Giza, Egypt

E-mail: zmsawan@hotmail.com
 
Accepted May 12, 2018

Abstract

Any factor that negatively affects seed vigor and viability during seed development will have adverse consequences on crop production. Seed quality is one of the most important factors for stand establishment in cotton (Gossypium Sp.), and the use of good quality seeds is therefore essential to obtain an optimum plant population. Conditions prevailing during seed formation can affect the quality of seed produced, and hence crop establishment in the next growing season. These conditions can affect the germination of the seeds and the ability of the seedlings to emerge from soil, these being the most critical stages during the life cycle of cotton plant. Field experiments were conducted to investigate the effect of nitrogen (N), phosphorus (P), potassium (K), foliar application of zinc (Zn), the use of plant growth retardants (PGR’s) [e.g., 1, 1-dimethyl piperidinium chloride (MC); 2-chloroethyl trimethyl ammonium chloride (CC); or succinic acid 2, 2-dimethyl hydrazide (SADH)], during square initiation and boll setting stage, on growth, seed yield, seed viability, and seedling vigor of cotton.

Keywords: Cottonseed, Nitrogen, Phosphorus, Plant Growth Retardants, Potassium, Zinc