Impact of Boron, Zinc and IAA on growth, dry matter accumulation and sink potential of pigeon pea (Cajanus cajan L.)

Field experiments were conducted during Kharif 2002 to 2003 to examine the impact of B, Zn and IAA singly and in different treatments combinations at flowering and pod initiation stages of pigeon pea variety Asha and ICPL81-119. The objectives was study the pattern of growth, dry matter distribution, leaf and pod abscission as well as the assimilate partitioning for sink enhancement. IAA irrespective of concentrations in combination with boron and zinc at flowering and podding stages was found most effective in prevention of flower and premature abscission and acceleration of assimilate translocation as well, while foliar application of the same at flowering or pod initiation, individually, seems to alter the growth parameters or yield contributing traits partially.