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University of Nebraska - Lincoln (1990)

Water conservation in wheat rotations under several management and tillage systems in semiarid areas

Bouzza Abderrahmane

Titre : Water conservation in wheat rotations under several management and tillage systems in semiarid areas

Auteur : Bouzza Abderrahmane

Université de soutenance : University of Nebraska - Lincoln

Grade : Doctor of Philosophy (PhD) 1990

Résumé
Water conservation impact on wheat yield was evaluated during four years of study in semi-arid areas of Morocco.^ The absence of any data on water availability to the crop in a continuous cropping system compared to wheat after fallow led to this research. The ability of the soils to store water during fallow and stored water effectiveness on yield was studied.^ No-tillage management yielded more in continuous wheat and wheat after fallow. In a very dry year, grain yield in a no-tillage system was 100% and 72% higher than the conventional management and fall chisel plowing, respectively in continuous and wheat after fallow.^ In areas averaging 240 to 300 mm annual rainfall, wheat after fallow used water as efficiently as continuous wheat. No-till management and no soil disturbance in the dry period after harvest was a requirement for successful fallow

Mots clés : Agronomy, Continuous cropping, No-tillage management, Biological sciences

Présentation

Page publiée le 17 septembre 2010, mise à jour le 8 septembre 2017