Influence of ferti-irrigation of distillery spentwash to banana (Musa paradisiaca L.) growing soils on organic carbon content and soil fertility status1.

摘要

Field experiments were carried out in a loamy soil (pH 8.10, EC 0.30 dS/m and organic carbon 0.57%) to study the effect of distillery spentwash ferti-irrigation under different combinations to banana (Musa paradisiaca L.) cv. Grand naine on the availability of nutrients in soil from 2008 to 2010 at the Shanthi farm of the M/s Gemini Distilleries Pvt. Ltd., Nanjangud, Mysore district located in Southern Dry Zone of Karnataka and situated at 12 degrees 11' North latitude, 76 degrees 69' East longitude with an altitude of 610 m above mean sea level. In general, the application of distillery spentwash ferti-irrigation helped to build up soil nutrient status with respect to OC, available major, secondary and micro nutrients. Available nitrogen, phosphorus and sulphur content of soil varied significantly due to distillery spentwash irrigation. Highest content of all these nutrients in soil was recorded with 25% N through fertilizers plus 75% N through distillery spentwash in five irrigations. Available potassium, exchangeable calcium, magnesium and micronutrients content of soil also varied significantly due to distillery spentwash irrigation. Highest content of all these nutrients in soil was recorded in treatment receiving 100% N through distillery spentwash irrigation followed by 25% N through fertilizers plus 75% N through distillery spentwash irrigation.