EFFECT OF DIFFERENT BORON SOURCES AND LEVELS ON MACRO AND MICRONUTRIENT UPTAKE AND POST-HARVEST AVAILABILITY IN SALINE SODIC SOIL
The study was conducted to assess the effect of different boron sources and levels of macro and micronutrient uptake andpostharvest availability in saline sodic soil. Four levels of B (0, 0.5, 1.0 and 1.5 mg kg-1) was supplied through three different sources, namely borax, sodium octaborate and magnesium boro humate complex. A total of twelve treatment combinations were laidin factorial CRD design with three replications. Cotton var. LRA5166 was chosen as the test crop. The results revealed that application of 1.5 mg B kg-1 as magnesium boro humaterecorded the highest NPK uptake of 3.05, 0.99 and 2.55 g pot-1, respectively and the highest mean Zn, Fe, Mn and Cu uptake of 8.78, 13.69, 5.93 and 1.84 mg pot-1, respectively.The available NPK and other micronutrient status in post-harvest soil were invariably not influenced by the source and levels of the boron sources.