Publisher: Dobroudja Agricultural Institute, General Toshevo, Bulgaria

Journal: Field Crops Studies

Title: Biological yield formation in different triticale varieties under the conditions of nitrogen deficit

Author(s): Hristofor Kirchev, Zhivko Terziev, Tony K. Tonev, Nadezhda Semkova

Volume, No., Year: Vol. IV, No. 2, 2007

Pages: 293-298

Language: Bulgarian

Recommended citation: Kirchev, H., Zh. Terziev, T.K. Tonev & N. Semkova (2007) Biological yield formation in different triticale varieties under the conditions of nitrogen deficit, Field Crops Studies, IV (2): 293-298.

The data and results were analysed on the base of a field experiment carried out in the experimental field of Agricultural University of Plovdiv on carbonate alluvial-meadow soil under the conditions of nitrogen deficit. The accumulation of biological yield from 5 triticale varieties was studied (AD-7291, Rakita, Rozhen, Zaryad and Sadovets) cultivated without direct applying of nitrogen fertilization after maize for grain predecessor and during three phases of growing – the beginning of shooting up, coming into ear and full ripening. The results indicate that in regard to the biological productivity the state standard AD-7291 yields to the Bulgarian selection of varieties and its main advantage is its ecological plasticity. During the ear formation a high correlation between the total biological yield and the relative share of stems as well as some genotype differences were observed regarding the leaf mass. On the average during the 3 years of experiment the explored varieties with regard to their biological potential and under conditions of Plovdiv region can be classified in a descending line as follows: Rakita > Rozhen > Sadovets > Zaryad > AD-7291, i.e. in favour of rye-type varieties. The advantage of the new Bulgarian varieties is the higher harvest index –an indicator which is going to be a reserve for the future selection of high productivity.

Key words: Triticale – Nitrogen deficit – Biological yield – Biological yield’s components

* * *

REFERENCES

Колев, Т., Р. Иванова. 2004. Изпитване на сортове тритикале при агроекологичните условия на Пловдивски район. Раст. Науки, 41, 6, 509-512.

Тимофеев, В.Б., О.А. Жмакина, А.В. Плотникова, 1986. Об урожайности и качестве зеленой массы кормовых тритикале, Сель.-хоз. биол., № 11: 46-57.

Тонев, Т.К. 1995. Изменение на компонентите на зелената маса от тритикале под влияние на минералното торене, Раст. науки, № 5: 118-121.

Янков Б., Г. Москов, Ж. Терзиев, Х. Янчева, 2002. Растениевъдство. АИ на Аграрен университет – Пловдив.

Brignall, D.M., M.R. Ward & W.J. Whittington, 1988. Yield and quality of triticale cultivars at progressive stages of maturity, J. Agr. Sci., 111, No. 1: 75-84.

FAO - UNESCO. 1990. Revised Legend. Rome, Italy.

Kim, B.Y., A.C. Baier, D.J. Somers, J.P. Gustafson. 2001. Aluminium tolerance in triticale, wheat and rye. Euphytica, 120, 3, 329-337.

Lásztity, B. 1988. A mütrágyázás hatása a triticale szárazanyag – felhalmozására és tátapelemtartalmára, Agrokém. és talaj, No. 36-37: 191-208.

Ozkan, H., I. Genc, T. Yagbasanlar, F. Toklu. 1999. Stress tolerance in hexaploid spring triticale under Mediterranean environment. Plant Breed., 118, 4, 365-367.

Royo, C., M. Abaza, R. Blanco, L.F.G. Delmoral. 2000. Triticale grain growth and morphometry as affected by drought stress, late sowing and simulated drought stress. Aust. J. of Plant Physiol., 27, 11, 1051-1059.