Foliar Fertilization as a Strategy to Increase the Proportion of Mature Pods in Peanut (Arachis hypogaea L.)

Abstract

Foliar application of nutrients is used by growers to remediate crop nutrient deficiencies, but anecdotal reports indicate there may be associated effects of accelerated crop maturity, particularly for irrigated peanut ( Arachis hypogaea L.). Research was conducted to determine whether application of foliar fertilizers during early pod set could increase the proportion of early-maturing pods, and thereby increase the mature proportion of the profile under irrigated conditions. Field experiments were conducted in Florida at Citra in 2016, Jay in 2016 and 2017with a randomized complete block with four foliar fertilizer treatments, applied to GA-06G at R1 and again two wks later at R2. Treatments consisted of no foliar fertilizer (control), 10.0 kg N/ha, 1.0 kg P2O5/ha, and 0.34 kg B/ha at each application and two harvest timings. Harvest treatments were based on the adjusted growing degree d model for peanut and were timed to represent early and optimal crop maturity. Leaf tissue nutrient concentrations were determined from samples collected 24h after each foliar treatment application. Yield and proportion of mature pods were quantified after each digging date. Normalized difference vegetation index data showed no treatment differences. The maturity profile (percentage of mature pods present in the sample) was not consistently different from respective controls during either harvest period. Results indicate foliar fertilizer applied during flowering had little effect on maturity acceleration in peanut, though foliar fertilization may still be effective at alleviating in-season nutrient deficiencies. Within site-year, application of foliar fertilizer did not increase yield. Under sound soil fertility management programs, foliar fertilizers did not increase yield or the maturity profile of peanut.

Study of Enhancing Summer Groundnut (Arachis hypogaea L.) Yield Attributed Characters through Foliar Nutrition

“…The results are in close conformity with the observations recorded by Sarkar et al, (1999) and Sarkar and Pal (2006), who also reported response of groundnut to the applied foliar nutrition. The same finding resemble with Veerabhadrappa and Yeledhalli (2005) and Veeramani et al, (2012); Chandrasekaran et al, (2008); Pierre et al, (2019).…”

Efeitos da aplicação de boro via solo e foliar na qualidade da semente de amendoim

“…Discordando do presente estudo, Pierre et al (2019) testando adubações foliares com N (10 kg ha -1 ), P (1,0 kg ha -1 ) e B (0,34 kg ha -1 ) verificou que a aplicação foliar de B isolada não teve efeito sobre a porcentagem de plântulas normais. Provavelmente, isso se deve ao fato de o B ter uma mobilidade reduzida na planta amendoim (BROWN; SHELP, e2073 SAS, 1(2):e2073, 2020 1997), não ocorrendo redistribuição via floema do B absorvido através das folhas para as raízes e estruturas reprodutivas (MALAVOLTA et al, 1997).…”

“…(DECHEN et al, 1991;RÖMHELD, 2001;SINGH et al, 2007). Estudos mostrando o efeito positivo do B na maturação e de plântulas normais também foram demostrados por Pierre et al (2019); Singh et al (2007); Grichar et al, (2012); Nogueira e Santos (2000).…”

Peanut response to a commercial blend of nitrogen, phosphorus, potassium, and fulvic acid

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The commercial blend of nitrogen, phosphorus, potassium, and fulvic acid, marketed as Peg Power (ammoniacal nitrogen at 1.31% (w/w), nitrate nitrogen at 0.32% (w/w), urea nitrogen at 5.37% (w/w), available phosphate at 4.0% (w/w), soluble potash at 9.0% (w/w), and fulvic acid complex at 12.0%; referred to as a blend of foliar fertilizer and fulvic acid) is promoted in some areas for use in peanut (Arachis hypogaea L) to maximize flowering, pod set, pod fill, and increase yield (Triangle Chemical, 2022). Data in the peer-reviewed literature is limited in terms of peanut yield response to foliarapplied fertilizers that include these elements (Pierre et al, 2019), and no information is published that compares peanut yield response to the blend of foliar fertilizer and fulvic acid to nontreated peanut. Research was conducted in North Carolina to determine if this product increases yield compared with nontreated peanut when applied sequentially at the R1 stage of peanut development (Boote, 1982) followed by a second application at the R3 stage of peanut development 2 wk later.

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