Effect of Crop Geometry, Balanced Fertilisation and Agro-chemicals on the Productivity, Nutrient Uptake and Residual Soil Fertility of Fenugreek (Trigonellafoenum-gruecuml.)

摘要

A field experiment was conducted at Instructional Farm, Rajasthan College of Agriculture, Udaipur, during two consecutive Rabi seasons of 2001-02 and 2002-03, to enhance the productivity of fenugreek through the enjoyment of appropriate crop geometry, balanced fertilisation and agro-chemicals. Soils of the experimental field were clay loam in texture with medium fertility status and were alkaline in reaction. The experiment consisted of 30 combinations of two crop geometries (22.5 cm x 13.3 cm and 30 cm x 10 cm), five levels of fertilization (control, N40, N40 + P17.5, N40 + P17.5 + K20 and N40 + P17.5 + K20 + S30)and three agro-chemicals (no spray, thiourea @ 1000 ppm and TIBA @ 250 ppm). These treatments were evaluated using split plot design with three replications.The results indicated the superiority of crop geometry of 30 cm x 10cm, which brought about improvement in yield attribute, yield and uptake ofN, P, Kand S by the crop and improved soil fertility status after harvest of crop. Application of balanced fertiliser dose of N40 + P17.5 + K20 + S30 significantly increased all the yield attributes, yield and uptake of N, P, K and S by the crop. The available nutrient status of experimental soils assessed after harvest of fenugreek crop was also found higher when compared with the available nutrient status of control plot soils. Further, application of 1000 ppm thiourea through foliar sprays at 50 % flowering and 15 days thereafter significantly increased yield and uptake of N,P, K and S by crop representing 8.09, 6.19, 6.84, 5.83 and 6.05%, respectively, over that observed with no spray.