Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2007.959.963Helianthus annuus cv. High Sun 33) After the Harvests of Initial Main Crops of Maize (Zea mays L.), Soybean (Glycine max L.) and Sunflower (Helianthus annuus)]]>Srisa-ardK. 62007106The experiments consisted of two locations, i.e., the
first one was carried out on a growers`s upland area at Saraburi Province,
Central Plane region of Thailand with the use of Chatturat soil series
(Typic Haplustalfs, fine, mixed) and the second experiment was carried
out at Suranaree Technology university Experimental Farm, Suranaree Technology
University Northeast Thailand with the use of Korat soil series (Oxic
Paleustults). The experiments aimed to investigate the effect of residual
effects of applied chemical fertilisers on growth and seed yields of sunflower
(Helianthus annuus) after the harvests of initial main crops of
maize, soybean and sunflower. The experiments consisted of four cultural
methods being practiced by growers in both regions. For Methods 1 and
2, each had four fertiliser treatments; Method 3 consisted of two fertiliser
treatments and Method 4 was used as a control treatment. The results showed
that soil pH, organic matter and nutrients of Korat soil series were most
suited soil conditions for growth of sunflower plants, whilst that of
Chatturat soil series at Saraburi province was an alkaline soil with a
mean value of soil pH of 7.8. Chatturat soil series, in most cases, gave
higher amounts of seed yields (1,943.75 kg ha-1) than Korat
soil series. Residual effects of applied chemical fertilisers to main
crops of soybean gave better growth and seed yields of sunflower plants
and it is considered to be the first choice. The use of sunflower and
maize as main crops gave a second choice for subsequent crop of sunflower.]]>Wald, A. and M.R. Ashley,200235S173S182Wald, A. and M.R. Ashley,200235S173S182Crabtree, R.J. and R.N. Rupp,198072445448Kasikranan, S.,2003Zea mays L.) in Thailand.]]>2003Mernegay, M.R.,1976Mengel, K. and E.A. Kirkby,19874th Edn.,Miller, W.M. and R.L. Donahue,19906th Edn.,Pages: 768Pages: 768MSTAT Development Team,1989pp: 1-152pp: 1-152Pholsen, S.,20032003Ratnapradipa, P.,1996Zea mays L.) grown on Satuk loamy sand.]]>1996Suksri, A., S. Seripong and S. Teerapongtanakorn,1989Helianthus annuus var. Hysun 33) Grown on an Acid Soil.]]>Suksri, A., S. Seripong and S. Teerapongtanaporn,1991Zea mays L.) grown on yasothon soil.]]>718Suksri, A.,1996Suksri, A.,19991st Edn.,Pages: 212Pages: 212Anonymous,19761976Anonymous,20022002