Impact of nitrogen fertilizer from organic and conventional sources on seed yield of Niger (Guizotia abyssinica Cass.)
Abdel-Sabour MF, AboEl-Seoud MA, Rizk M. 1999. Physiological and chemical response of sunflower to previous organic waste composts application to sandy soils. Egyptian Journal of Soil Science 39, 407-420.
Abou Youssef MF, El-Eweddy EA. 2003. Effect of tillage and nitrogen application regime on yield and nitrogen content of sunflower cultivated under calcareous soil conditions. Zagazig Journal of Agricultural Research 30, 231-244.
Ahmed MKA. 2001. Effect of various fertilizers application on growth and yield of sunflower plants cultivated in sandy soils. Egyptian Journal of Applied Science 16, 92-98.
Anonymous. 2001. The Nitrogen and acidity story. Agronomic acumen Newsletter Nov. 80.
Aracnon NQ, Edward CA, Bierman P, Metzeger GD. 2004. Influences of vermicomposts on field strawberries: Effects on growth and yields. Bioresour Technol 93, 145-153.
Basha HA. 2000. Response of two sunflower cultivars to hill spacing and nitrogen fertilizer levels under sandy soil conditions. Zagazig Journal of Agricultural Research 27, 617-633.
Chapman HD, Pratt PF. 1961. Methods of Analysis for Soils, Plants and Waters. Agric Publ University of California, Riverside.
Cordovil C, Cabral F, Rahn C, Fink M. 2001. Fertilizing value and mineralization of nitrogen from organic fertilizers (pot and incubation experiments). Proceedings of the International Conference on Environmental Problems Associated with Nitrogen Fertilization of Field Grown Vegetable Crops. Potsdam, Germany, 30 August to 1 September 1999. Acta Horticulture 563, 139-145.
Darwish AA, El-Kabbany EAY, Mansour AFA, Dorgham EA. 2002. The influence of organic manure of Jojoba and/or castor bean residues on wheat plant. Egyptian Journal of Applied Science 17, 376-389.
Dutta PC, Helmersson S, Kebedu E, Getine A, Appliqvist L. 1994. Variation in lipid composition of niger seed (Guizotia abyssinica Cass.) samples collected from different regions in Ethiopia. J Am Oil Chem Soc 71, 839–843.
El Awag TL, Hanna AM, El-Naggar LM. 1996. Influence of mineral and organic nitrogen fertilization on wheat production and some soil physical properties. Journal of Agricultural Science (Mansoura University) 21, 1491-1500.
El-Sherbieny AEA, Awad EAM, El-Sawy MMM, Helmy AM. 2003. Wheat response to some agro-industrial wastes and conventional N-fertilizers. Zagazig Journal of Agricultural Research 30, 385-406.
Faiyad MN. 1999. Interaction effect between organic matter, iron and salinity on the growth and mineral content of wheat plants grown on recently reclaimed sandy soil. Zagazig Journal of Agricultural Research 26, 1173-1189.
Gajendra G, Giri G. 2001. Effect of irrigation and nitrogen on performance of Indian mustard (Brassica juncea) and sunflower (Helianthus annuus) under two dates of sowing. Indian Journal of Agronomy 46, 304-308.
Gomez KA, Gomez AA. 1984. Statistical Procedures for Agricultural Research. John Wiley & Sons, Singapore
Ibrahim ME, El-Absawy EA, Selim AH, Gaaffar NA. 2003. Effect of nitrogen and phosphorus fertilization levels on growth, photosynthetic, pigments, yield and yield components of some sunflower varieties (Hilianthus annuus L.). Zagazig Journal of Agricultural Research 30, 1223-1271.
Malik MA, Shah SH, Mahmood S, Cheema MA. 2001. Effect of various planting geometries on the growth, seed yield and oil content of new sunflower hybrid (SF-187). Int J Agric Bio 3, 55-56.
Melo JPL, De-Oliveira AP. 1999. Garlic production as a function of different water levels and bovine manure in soil. Horticultura Grasileira 17, 11-15.
Nasim W, Ahmad A, Bano A, Usman M, Olatinwo R, Hammad HM, Khaliq T, Hussain M. 2012. Effect of N onyield and oil quality of sunflower (Helianthus annuus L.) hybrids under sub humid conditions of Pakistan. Amer JPlant Sci 03, 243-251.
Nasim W, Ahmad A, Wajid A, Akhtar J, Muhammad D. 2011. Nitrogen effects on growth and development of sunflower hybrids uner agro-climatic conditions of Multan. Pak J Bot 43(4), 2083-2092.
Nawar FRR, El-Kafoury AA. 2001. Effect of tillage system, plant spacing, farmyard manure and nitrogen fertilization on sunflower productivity in reclaimed land. Egyptian Journal of Applied Science 16, 79-86.
Nel AA, Loubser HL, Hammes PS. 2000. The yield and processing quality of sunflower as affected by the amount and timing of nitrogen fertilizer. South Africa Journal of Plant and Soil 17, 156-159.
Ramadan MF, Moersel JT. 2002a. Proximate neutral lipid composition of niger (Guizotia abyssinica Cass.) seed. Czech J Food Sci 20, 98–104.
Ramadan MF, Moersel JT. 2002b. Direct isocratic normal-phase assay of fat-soluble vitamins and beta-carotene in oilseeds. Eur Food Res Technol 214, 521–527.
Ramadan MF, Moersel JT. 2004. Oxidative stability of black cumin (Nigella sativa L.), coriander (Coriandrum sativum L.) and niger (Guizotia abyssinica Cass.) upon stripping. Eur J Lipid Sci Technol 106, 35–43.
Ranganatha ARG. 2010. Improved Technology for maximizing production of Niger. Bulletin
Salehi F, Bahrani MJ. 2000. Sunflower summer-planting yield as affected by plant population and nitrogen application rates. Iran Journal of Agricultural Research 19, 63-72.
Tahoun SA, Abdel-Bary EA, Atia NA. 2000. A greenhouse trial in view of organic farming in Egypt. Egyptian Journal of Soil Science 40, 469-479.
Watson DJ. 1952. The physiological basis of variation in yield. Adv Agron 4, 101-145.
Zahoor A, Riaz M, Ahmad S, Ali H, Khan MB, Javed K, Anjum MA, Zia-ul-Haq M, Khan MA. 2010. Ontogeny growth and radiation use efficiency of Helianthus Annuus L., as affected by hybrids, Nous regimes and planting geometry under irrigated arid conditions. Pak J Bot 42, 3197-3207.