Cotton and Wheat Responded to Boron on High-pH Calcareous Soils in Pakistan

摘要

The earlier workers (Kausar et al. 1979; Sillanpaa, 1982; Rashid, 1995) reported the micronutrients deficiency in soils and plants. The observation of farmers regarding the premature shedding of cotton squares and bolls provided the enough backgroundto initiate the B research to determine its response by two major crops in the region. The high soil pH and presence of CaCO_3 in soil are the main factors influencing the availability of B to plants (Barrow 1989; Lehto 1995; Mezuman and Keren 1981; Goldberg and Forster 1991; Elseewi, 1974; Elseewi and Almalky 1979). Keeping in view the importance of cotton and wheat in Pakistan, this study was initiated to determine the response of these crops to B on high-pH-calcareous soils.