THE STUDY OF THE EFFECT OF POTASSIUM AND PHOSPHORUS LEVELS ON COTTON Gossypium hirsutum L.) YIELD IN TWO SEASONS | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 19, Issue 3, June 2014, Pages 0-0 | ||
| Authors | ||
| T. M. Faraj; N. Sh. Ali; I. S. Salman | ||
| Abstract | ||
| A factorial field experiment using RCBD in three replicates was conducted to study the interactive effect among different levels of potassium and phosphorus on cotton production in calcareous non-saline soil in Kirkuk Governorate –Dakook Township for 2011 and 2012 growing seasons. The experiment included 4 levels of potassium (0,120,160and 200 kg K ha-1) and three levels of phosphorus (0, 60 and 80 kg P ha-1). Results indicated that cotton responded significantly to potassium and phosphorus fertilizers applications. Application of 200 kg K ha-1 gave best result for both years with an increment of 30 % and 28 % for 2011 and 2012 respectively compared to control treatment. Yield of cotton increased with P fertilizer application with 80 kg P ha-1 giving best results .The increment in yield of cotton were 22 and 13% compared to control for 2011 and 2012 season respectively. The best interaction was with 200 kg K ha-1 + 80 kg P ha-1 giving an increment of 63 and 82% than control for 2011 and 2012 respectively. In addition, this trial revealed that interaction between P and K gave better results than applying each nutrient alone. | ||
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