TY  - SER
AU  - El-Sadek,A.N.A.
AU  - Ashoub,M.A.
AU  - Abo Shetaia,A.M.
AU  - Hegab,M.T.
TI  - Response of sunflower yield and its attributes to sowing dates, boron foliar application and nitrogen fertilization under El-Wadi El-Gadeed conditions
KW  - Sunflowers
KW  - Fertilizers
KW  - Planting time
KW  - Nitrogen fertilizers
KW  - Boron in agriculture
KW  - Foliar feeding
KW  - Yields
N1  - Includes references
N2  - Two field experiments were carried out in 2001 and 2002 seasons at the experimental farm of Desert Research Center in EI-Kharga Oasis, EI-Wadi EI-Gadeed Governorate to study the response of sunflower (Vidoc variety) to sowing date (April 1st, April 15, and May 1st), boron foliar application (without borox as well as tap water, 0.1 % borax and 0.2% borax) and nitrogen fertilization levels (40, 60, and 80 kg N/fad.). Sowing sunflower early on April 1st  increased plant height, stem and head diameters, No. of seeds/head, 100-seed weight, seed yield, biological yield, crop index, harvest index, oil percentage and oil yield. Yield and its attributes were affected by boron foliar application where 0.2 % borax gave the highest values of head diameters, No. of seeds head, 100-seed weight, seed yield, biological yield, crop index ,harvest index, oil percentage and oil yield in 2001 and 2002 seasons. Plant height, stem diameter and straw yield were not affected by boron foliar application levels. Increasing nitrogen fertilization up to 80kg N/fad. gave the highest values of attributes and oil yield/fad. Where as the highest values of crop index and oil % were obtained by using 40kg N/fad. Harvest index reached to the maximum by using 60kg N/fad
UR  - http://nile.enal.sci.eg/EALE/2004/ZJAR/3104/4A/1257.pdf
ER  -