Effect of Four Phenolic Compounds on Yield, Yield Characteristics and Oil Production of Two Peanut (Arachis hypogaea L.) Cultivars1

Abstract

In the recent years phenolics have gained importance as PGR(s) [plant growth regulators]. To study their effect on pod development in peanut, four phenolic compounds (H-acid, 1,2,4-acid, resorcinol, and RD-Brown) were used in a field experiment with two foliar spray applications of 100 and 200 ug/mL at 35 and 50 days after planting. A randomized block design was used separately for two cultivars (C-501 and M-37 with three replications for each treatment. All treatments resulted in increased oil content and yield (kg/ha) of peanut (Arachis hypogaea L.). H -acid at 100 ug/mL was the most effective treatment for enhancing number of pods per plant, shelling percentage, yield (kg/ha) and oil percentage in C-501. While H-acid at 100 ug/mL gave the highest increase in number of pods/plant and oil percentage, resorcinol induced the highest yield per hectare and total oil content in M-37. The effect of phenolic compounds on these peanut parameters was independent of their structural configuration.

Growth, yield and economics of groundnut (Arachis hypogaea) as influenced by intercrops and sulphur application

“…It in turn led to greater transloca-tion of assimilates from source to sink which ultimately increased the yield attributes and yield of groundnut. The results confirm the findings of Singh (1980).…”

Signaling by Glutamate Dehydrogenase in Response to Pesticide Treatment and Nitrogen Fertilization of Peanut (Arachis hypogaea L.)

“…Sevin is a carbamate insecticide, but 1-naphthol, one of its hydrolysis products, is a strong nucleophile. Phenolic compounds, 1-naphthol, are plant growth regulators (Singh et al, 1991). Also, Bravo is an organochlorine fungicide, but its dehalogenated products (Sato and Tanaka, 1987) are stronger nucleophiles.…”

“…For example, peanut seed yield increase of up to 7% was achieved by foliar application of urea (Walker et al, 1984), when it was understood that fertilizer nitrogen application to the soil was ineffective. Also, a yield increase of up to 35% was achieved by treatment of peanuts with phenolic compounds, although the biochemical basis of the effect was not explained (Singh et al, 1991). Tertiary amines also enhance crop yield by increasing the net-carbon assimilation (Keithly et al, 1991), but no enzyme was associated with the bioregulation process.…”