An evaluation of strategies to use rock phosphates in Agriculture

ISBN-13: 9786202054423 / Angielski / Miękka / 56 str.

Said Taalab; Salah Siam; Ali Abdel-Rahman

Opis

Phosphorus is one of the three most important elements that a plant needs to complete its life cycle. Low bioavailability of phosphorus in soil from the applied phosphate fertilizers due to fixation/precipitation is considered the most critical factor in limiting optimum crop yields. Therefore, obtaining alternative sources of phosphate fertilizer at a low cost has become one of the most important requirements of this stage. Rock phosphate is one of the low-cost sources of phosphorus, but it is not preferred to add it directly to the soil due to its low solubility because of its very poor water solubility (0.1%). From the previous studies on rock phosphate, it was found that the availability of the phosphorus can be increased in several ways, among these ways partial acidification or the addition of biological fertilizers to rock phosphate, which leads to improvement and increased efficiency.Combination with oxalic acid plus ammonium thiosulfate and mixing them with rock phosphate has an effective effect on increasing the yield parameters of crops. The use of oxalic acid and ammonium thiosulfate represents many unique features such as ease of addition and increase in crop yield.

O autorze

Taalab, SaidAhmed Said Taalab, born in new El Wada - Egypt (1957). Received BSc in 1979 and MSc degree in Soil and Water science in 1993, Cairo University, Faculty of Agriculture. Now he is Professor of Plant Nutrition Department, National Research Center, Egypt.