Influence of 2,3,5-Triiodobenzoic Acid and Gibberellin on Growth, Yield and Nutrient Content of Southern Peas1

Abstract

Field experiments were conducted to determine the influence of TIBA and Gibberellin sprays on yield, growth characteristics and chemical composition of ‘California Black eye No. 5’ and ‘Purple Hull Pinkeye’ varieties of southern peas. Yield of peas was slightly increased on both varieties with the application of TIBA. Time of application as well as rate was a critical factor in producing maximum yields. Application of TIBA reduced plant size and concentrated maturity. The application of 50 ppm Gibberellin 5 days after application of 20 g per acre of TIBA further concentrated maturity and increased the desirability of peas for mechanical harvest. Iron concentrations in pea leaves were increased with application of TIBA.

Effect of 2,3,5-Triiodobenzoic Acid on Bitter Pit and Calcium Accumulation in ‘Northern Spy’ Apples1

“…Stahly and co-workers (9, 10) reported 2,3,5-triiodobenzoic acid (TIBA) reduced the Ca content of fruit and increased the amount of bitter pit in 'Golden Delicious' apples. The effect of TIBA on Ca ^Received for publication September 28, 1972. movement and accumulation in other plant tissues has also been reported (3,4).…”

Calcium-related Disorders of Fruits and Vegetables1

“…Bullock (12) reported the reduction of cracking of cherries with sprays of 1-napthaleneacetic acid (NAA), and Hewetson (39)…”

“…Shear and Faust (84) increased the movement of 45Ca into mature leaves of apple seedlings with sprays of kinetin or N-6-benzyladinine. Stahly and Benson (85) reduced Ca concn in fruit of 'Golden Delicious' apples with sprays of TIBA, and Hipp and Cowley (39) decreased Ca concn in pea leaves with sprays of TIBA.…”

Influence of Growth Regulating Substances on Absorption and Translocation of Calcium in Pea and Bean1

“…Studies with radiotracers show that certain plant hormones can influence the movement of organic metabolites and nutrients (12,13,14,17,18,19) but their specific action is not well elucidated. Several other investigations have also revealed an influence of synthetic growth regulators on Ca movement or deposition (5,6,10,20,21). Most of the data, however, are for long-term experiments having widely differing experimental designs and consequently general relationships are not easy to derive.…”