The Effect of Chemical Fertilization Time on NPK Pannaes Contents and Yield of New Date Palm Breading for Three Cultivars

• Main Authors: Waleed Fleh Hassan, Adnan Hameed Salman, Iman Kassiem Mohamed, Harth Adnan Moter
• Format: Article
• Language: Arabic
• Published: University of Al-Qadisiya 2018-03-01
• Series: Al-Qadisiyah Journal For Agriculture Sciences
• Online Access: http://qu.edu.iq/jouagr/index.php/QJAS/article/view/5

An experiment was conducted during 2014 growing season at Al –Rabi date palm station/Zafaraniah /Baghdad to study the effect of  chemical  fertilization time on NPK pannaes  contents,offsets number  and yield  of new date  palm breading for Barhee, Zahdee and Kathrawee Mandly cultivars . There are five chemical  fertilization times first time (march and September) second time  (march, April  and September) third time  (march, April ,May  and September) forth time(march, April ,May, June and September) and the last time in September , an experiment was growing under drip irrigation. The results show that  a significant increases in nitrogen and  phousphors pannas contents in September  , it were 1.33 , 0.226 mg.kg-1 dry mater for  nitrogen and  phousphors respectly  ,the highest  value of nitrogen pannas content had record in Zahdee cultivar it was 1.36 mg N.kg-1 dry mater , the highest value of nitrogen pannas content had record in Kathrawee Mandly cultivar fertilized in September it was 0.247 mgP.kg-1 dry mater .There were a significant increases in potassium  pannas content in forth time  , it were 1.262 mgK.kg-1 dry mater  ,the highest  value of potassium  pannas content had record in Zahdee cultivar fertilized in forth time  it was 1.20 mg K.kg-1 dry mater, although results show a significant increase in yield  in second time  , it was 13.78 kg.tree-1  , the highest  value of yield had record in Kathrawee Mandly cultivar it was 13.85 kg.tree-1 , the highest  value of yield  had record in Kathrawee Mandly cultivar fertilized in second time  it was 15.67 kg.tree-1,  although results show a significant increase in off sheet number  in first time , it was 9.56 offsheet.tree-1  , the highest  value of yield had record in Kathrawee Mandly cultivar it was 9.17 offsheet.tree-1 , the highest  value of yield  had record in Kathrawee Mandly cultivar fertilized in first time  it was 14.33 offsheet.tree-1.