Tropicultura (Jan 2012)
Rendement agronomique du blé et de l'orge dans les parcelles associées des jeunes pacaniers à Sidi Mbarek au nord de la Tunisie
Abstract
Productivity of Wheat and Barley in Plots Associated with Young Pecan in Sidi Mbarek at North of Tunisia. The productivity of two agroforestry associations is studied in the region of Mateur north of Tunisia (bioclimate subhumid). This crop of durum wheat and barley in association with young people aged 8 pecan during unproductive phase (0 to 10 years) to promote the cultivation of this tree to dry fruit in the region, occupy the land and improve incomes of rural populations. The pecans are planted at a density of 5 m x 5 m while wheat and barley are sown on the fly (± 200 plants/m²) in the bands between the rows of pecan (EA), near the pecan (SA) and in field control without trees (TE) with similar soil and climatic characteristics. The results show that the yields of intercropping depend on the location of planting. The yields of durum wheat sown between rows of pecan (8.4 t / ha) and those of the control (8.6 t/ ha) are not statistically significant difference, while yields of corn planted near the pecan (3.5 t/ha) and those of the control (8.6 t/ha) have a very significant difference. The yield of barley sown between rows of pecan (6.2 t/ha), near the pecan (1.9 t/ha) and those of the control (8.6 t/ha) are significantly different. The competition of surface roots of pecan and shading of the branches are pointed in SA as the main cause of declining performance. The pecan coexists easily with winter annual crops because of phenological shift. This system is productive and sustainable when it is practiced beyond 1 m from the pecan.
