V.A. Patel1, S.K. Shah2, G.I. Chaudhari*3 and K.V. Chaudhary4
1Department of Agricultural Chemistry and Soil Science, C. P. College of Agriculture,
S. D. Agricultural University, Sardarkrushinagar-385 506 (Gujarat), India
2 (Soil Science), Castor-Mustard Research Station,
S. D. Agricultural University, Sardarkrushinagar-385 506. (Gujarat), India
3Department of Agricultural Chemistry and Soil Science, C. P. College of Agriculture,
S. D. Agricultural University, Sardarkrushinagar-385 506 (Gujarat), India
4Department of Agricultural Chemistry and Soil Science, C. P. College of Agriculture,
S. D. Agricultural University, Sardarkrushinagar-385 506 (Gujarat), India
Received-07.01.2022, Revised-22.01.2022, Accepted-29.01.2022
Abstract: A field experiment was conducted during rabi 2014 at Castor-Mustard Research Station, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar to study the “Effect of coated urea on yield, oil quality and nutrient uptake of Indian mustard [Brassica juncea (L.) Czern & Coss] in loamy sand”. This experiment was conducted with ten treatments comprising of two coated urea viz., T1-No nitrogen (control), T2– 100 % RDN Urea-(Basal + one split), T3-100 % RDN-NCU (Basal + one split), T4-100 % RDN-CCU (Basal + one split), T5-100 % RDN-NCU (Basal), T6-100 % RDN-CCU (Basal), T7-75 % RDN -CCU (Basal + one split), T8-75 % RDN -NCU (Basal + one split), T9-50 % RDN-CCU (Basal + one split) and T10-50 % RDN -NCU (Basal + one split) were evaluated in randomized block design replicating three times. Mustard variety GDM 4 was used as test crop. The results revealed that an application of T7-75 % RDN-CCU (Basal + one split) recorded significantly higher nitrogen and phosphorus content in seed as well as stover of mustard, while potassium content in seed and stover were non significantly influenced by different treatments of coated urea. An application of T7-75 % RDN-CCU (Basal + one split) recorded significantly higher nitrogen, phosphorus and potassium uptake by seed and potassium uptake by stover of mustard. An application of 100 % RDN-CCU (Basal + one split) recorded significantly higher nitrogen and phosphorus uptake by stover of mustard. Higher total P uptake was recorded with treatment of 100 % RDN-CCU (Basal + one split), while higher total N and K uptake of mustard was recorded with treatment of 75 % RDN-CCU (Basal + one split). An application of 100 % RDN- NCU (Basal + one split) recorded significantly higher available nitrogen, organic carbon and higher nitrogen use efficiency (NUE) was recorded with treatment of T7– 75 % RDN- CCU (Basal + one split) over other treatments. The soil pH, EC, available phosphorus and potassium status in soil as affected non significantly by different treatment of coated urea.
Keywords: Coated urea application, Nutrient content and uptake, Soil fertility status, Indian mustard, Loamy sand soil
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