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Joint International Conference on Long-term Experiments ...

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RESEARCHES REGARDING THE INFLUENCE OF THE CROP ROTATION ON<br />

SOME INDICATORS OF THE WHEAT YIELD QUALITY IN THE CONDITIONS<br />

OF THE CRISURILOR PLAIN<br />

Gh. Bandici , C. Domuţa, Ileana Ardelean , Ioana Borza , Cr. Domuţa<br />

University of Oradea, Envir<strong>on</strong>mental Protecti<strong>on</strong> Faculty, Oradea, Romania<br />

ABSTRACT<br />

The paper sustain the importance of the crop rotati<strong>on</strong> <strong>on</strong> quality of the wheat yield and is<br />

based <strong>on</strong> the results carried out during 2003-2006 in a l<strong>on</strong>g <strong>term</strong> trial out placed <strong>on</strong> the<br />

preluvosoil from Oradea in 1990. Both in n<strong>on</strong>irrigated and irrigated c<strong>on</strong>diti<strong>on</strong>s the smallest<br />

values of the protein, wet gluten and dry gluten were obtained in wheat m<strong>on</strong>ocrop; the<br />

values increased in the crop rotati<strong>on</strong> wheat maize and the biggest values were registered in<br />

the crop rotati<strong>on</strong> wheat-maize-soybean.<br />

INTRODUCTION<br />

The quality of the wheat yield is influenced by many factors. Protein acumulati<strong>on</strong> in the<br />

grains is influenced by wheat type, cultivar, climate c<strong>on</strong>diti<strong>on</strong>s, natural fertility of the soil,<br />

nitrogen doses used, irrigati<strong>on</strong> (Muntean L.S. et al, 2003, Domuţa C., 2005, Ardelean<br />

Ileana, 2006). Gluten c<strong>on</strong>tent of the wheat grain is influenced first of all by climate<br />

c<strong>on</strong>diti<strong>on</strong>s (Bîlteanu Gh., and Bîrnaure V., 1979, Bandici Gh., 1997).<br />

The influence of the crop rotati<strong>on</strong> and irrigati<strong>on</strong> <strong>on</strong> the protein and gluten c<strong>on</strong>tent is<br />

presented in the paper.<br />

MATHERIAL AND METHODS<br />

The paper is based <strong>on</strong> the research obtained in the l<strong>on</strong>g <strong>term</strong> trial with crop rotati<strong>on</strong> placed<br />

in 1990 in Oradea <strong>on</strong> preluvosoil. On ploughing depth, the soil is low acid (pH= 6,8), humus<br />

c<strong>on</strong>tent is low (1,75%), phosphorus (22,0 ppm) and potassium (845,4 ppm) have medium<br />

values; macroagregates hydrostability (47,5%) is high and bulk density (1,44 g/cm 3 ) is high,<br />

too. The experiment dispositive includes:<br />

Factor A: crop rotati<strong>on</strong><br />

a1 = wheat, m<strong>on</strong>ocrop<br />

a2 = wheat-maize<br />

a3 = wheat-maize-soybean<br />

Factor B: water regime<br />

b1 = n<strong>on</strong>irrigated<br />

b2 = irrigated<br />

The surface of the experiment parcele = 50 m 2 . Number of repetiti<strong>on</strong> = 4. Place methods =<br />

blocks method. Cultivar used: Dropia<br />

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