TY  - SER
AU  - Seadh,S.E.
AU  - El-Hendi,M.H.
AU  - Abd El-Aal,H.A.
AU  - El-Sayed,Shaimaa O.S.
TI  - Effect of NPK rates and humic acid applications on growth of Egyptian cotton
KW  - Sea Island cotton
KW  - Fertilizers
KW  - Growth
KW  - Humic acid
KW  - Nitrogen fertilizers
KW  - Phosphatic fertilizers
KW  - Potassium fertilizers
N1  - Includes reference
N2  - Two field experiments were carried out at Gemmeiza Agric. Res. Station, El - Gharbia. Governorate during 2010 and 2011 seasons, to study the effect of four NPK fertilizers rates (100 %, 75 %, 50 % and 25 % of recommended rate) and application methods of humic acid on growth of the Egyptian cotton cuttivar "Giza 86". The recommended rate of NPK was 45 kg N +22.50 kg P₂O₅ + 24.0 kg K₂O/ fed.. The solutions of humic acid were applied with the concentration of 5 cm³/litre as a soaking seed for 18 h, 50 cm³/litre as soil application twice, 5 cm³/L as a foliar application at 40, 55 and 70 days from sowing and without humic acid as a control treatment. Leaf area index (LAI), total dry weight/plant, crop growth rate (CGR), plant height and number of fruiting branches/plant were significantly increased by increasing NPK rate from 25 up to 100% of the recommended rate at all sampling dates in both seasons. Alsso, application of 100% NPK recorded the highest net assimilation rate (NAR) at the first period (79-100 days) in the two seasons
UR  - http://nile.enal.sci.eg/EALE/2012/MUJPP/312/8/2287.pdf
ER  -