Response of Date palm trees Phoenix dactylifera L. Khastawi cultivar to chemical, organic and biological fertilization

This study was carried out in one of the private palm orchards located area village Albu Assaf - Al-Dawwar, which is 10 km west Ramadi city / Anbar Governoaverge, during 2020-2021 season to effect three levels fertilizer combinations F0:0 ,F1: 600 g urea (N 276) + 350 triple superphosphate (P2O5 500 ) 168 potassium sulfate (K2O 240), 1200 (552 N) 700 336) 1000 480) and humic acid H0:0, H1:15, H2:30 ml. L-1 two a combination biofertilizers, Trichoderma(Trichoderma harzianum) Mycorrhizal(Glomus mosseae) B0:0, B1:300 ml Trichoderma 400 Mycorrhizal, with replications for each treatment, increase improve production date trees, Khastawi cultiver, The research as factorial experiment (2 x 3 3) it used design randomized complete block, RCBD, where 54 trees 11 years age were selected that homogeneous terms growth characteristics much possible, Each considered repeater. results showed superiority level F2 chemical fertilization several characteristics, including percentage set fruit, lowest fallen, length weight fruit its size total yield, amounted 52.431 kg, whereas, control treatment gave average traits mentioned earlier. H2 superior 58.148. In contrast, abovementioned traits. also B1 biofertilizers frozen falling, 51.641 kg. rate binary overlap F2H2 highest rates percentage, 59,064 fallen. Also, bilateral H2B1 fall. same B0 appeared outperform 58.915 kg compared lower average., F2B1 weight, well F2H2B1 averages fallen 59.648 response significant type increasing yield components. Keywords: Date palm; fertilization; NPK; bioFertilization; Humic acid; Khastawi.