Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol

Mathew, Jeena; Krishnakumar, Vivek; Srinivasan, V.; Bhat, Ravi; Namboothiri, C. G. N.; Haris, Abdul

doi:10.4067/s0718-95162018005001203

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…Studies in the state of Pará revealed levels of nearly 30 mg kg -1 in leaves of oil palm samples (MATOS et al, 2016) and 15 to 20 mg kg -1 in coconut leaves (SALDANHA et al, 2017) in productive phase. In soils of Kerala, India, the critical variation of B was 7.50 to 13.27 mg kg -1 in the leaves of coconut trees (MATHEW et al, 2018). Under field conditions, in the state of Pará, the leaf contents considered ideal for the açaí tree are empirically based, following the references of other palm trees or based on the leaf contents in high productivity açaí trees (RIBEIRO, 2017).…”

Section: Resultsmentioning

confidence: 99%

Productivity and nutrition of fertigated açaí palms according to boron fertilization

Lindolfo¹,

Matos

Fernandes

2020

Rev. Bras. Frutic.

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Due to the increasing national and international demand, the cultivation of açaí palm trees (Euterpe oleracea Mart.) has expanded to upland areas in Brazil. Most of these areas present low natural soil fertility, in which boron (B) is one of the most limiting nutrients. This study aimed to evaluate the productivity of fresh fruits of fertigated açaí trees submitted to doses of B. The study was carried out in Tomé-Açu, northeastern Pará, Brazil. The experimental design consisted of randomized blocks with four treatments: control and addition of 20, 40 and 60 g of B clump-1. After 17 months, bunches of fresh fruits were collected and the production per hectare was estimated. An economic analysis was carried out considering the costs of fertilization and fruit production. The productivities obtained in the treatments were considered above the average of the municipality of Tomé-Açu. The estimated content of leaf B that provided the highest productivity was 14.9 mg kg-1, for a yield of 5479 kg ha-1 year-1¸ while the critical content corresponded to 13.2 mg kg-1. The highest productivity of fresh açaí fruits was achieved with the dose of 20 g of B clump-1, which provided a net gain of 42%.

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Section: Resultsmentioning

confidence: 99%

Productivity and nutrition of fertigated açaí palms according to boron fertilization

Lindolfo¹,

Matos

Fernandes

2020

Rev. Bras. Frutic.

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“…The larger increase in the number of leaves palm −1 , number of spathes palm −1 , single nut weight −1 and nut yield palm −1 in TNAU coconut root-fed plants than that in control plants may be associated with the presence of macro- and micronutrients like B, Fe, Zn, and N in the TNAU coconut tonic. The decrease in button shedding seen in TNAU coconut tonic root-fed plants may be associated with NAA and salicylic acid, which are present in TNAU coconut tonic [ 58 ].…”

Section: Resultsmentioning

confidence: 99%

Sustaining the Yield of Maize, Blackgram, Greengram, Groundnut, Cotton, Sugarcane, and Coconut through the Application of Nutrients and Plant Growth Regulator Mixture

Alagarswamy,

Karuppasami,

Djanaguiraman

et al. 2024

Plants

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The foliar application of nutrients and plant growth regulators (PGRs) at critical crop growth periods can improve the yield of field crops. Hence, the present study was conducted to quantify the effects of the combined application of nutrients and PGRs (crop-specific formulation) on maize, blackgram, greengram, groundnut, cotton, sugarcane, and coconut yield. In all the crops except coconut, the treatments included (i) a foliar spray of crop-specific nutrients and PGR combinations and (ii) an unsprayed control. In coconut, the treatments included (i) the root feeding of coconut-specific nutrients and PGR combinations and (ii) an untreated control. Crop-specific nutrient and PGR formulations were sprayed, namely, Tamil Nadu Agricultural University (TNAU) maize maxim 1.5% at the tassel initiation and grain-filling stages of maize, TNAU pulse wonder 1.0% at the peak flowering stage of green gram and black gram, TNAU groundnut-rich 1.0% at the flowering and pod-filling stages of groundnut, TNAU cotton plus 1.25% at the flowering and boll development stages of cotton, and TNAU sugarcane booster 0.5% at 45 days after planting (DAP), 0.75% at 60 DAP, and 1.0% at 75 DAP of sugarcane. The results showed that the foliar application of TNAU maize maxim, TNAU pulse wonder, TNAU groundnut-rich, TNAU cotton plus and TNAU sugarcane booster and the root feeding of TNAU coconut tonic increased the yield of maize, pulses, groundnut, cotton, sugarcane, and coconut, resulting in higher economic returns.

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“…Boron toxicity dramatically affects the plant physiology and biochemistry leading to reduced growth, and eventually reduced crop productivity (Tsiantas et al 2019). According to Mathew et al (2018), highest coconut yield was recorded with B applied at the rate of 2.1 kg ha −1 while production was reduced by 35% with the highest dosage of 6 kg B ha −1 . In a recent study, Viscosi et al (2020) concluded that foliar application of B above 2700 ppm level negatively affected snap bean growth due to impaired stomatal conductance and photosynthesis.…”

Section: Resultsmentioning

confidence: 99%

Optimizing Boron Seed Coating Level and Boron-Tolerant Bacteria for Improving Yield and Biofortification of Chickpea

Hussain

Mehboob

Naveed

et al. 2020

J Soil Sci Plant Nutr

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Boron (B) is a vital nutrient equally important for plants and human beings. The native soil fertility of arid and semi-arid regions of Pakistan is very low where chickpea is grown on large scale. In such soils, B deficiency is the leading constraint not only for profitable chickpea production but also lead to low B-enriched chickpea grains. Boron seed coating and inoculation with Btolerant bacteria (BTB) can be effective to improve crop response grown on such soils. Chickpea seeds were coated with different levels of boron (0.0 control; 1.0, 1.5, 2.0, 2.5, and 3.0 g B/kg). Coated and uncoated seeds were divided in two portions and half of these seeds were inoculated with BTB, i.e., Bacillus sp. MN54 while the other half of these seeds were not inoculated with BTB, i.e., Bacillus sp. MN54. Boron seed coating improved seedling growth, nodulation, seed yield, and grain B concentration. Crop response for such characteristics was further augmented with the inoculation of BTB. It was found that seed coating with 1.5 g B kg −1 along with BTB inoculation was the best combination to improve seedling growth, nodulation, and grain yield of chickpea. Higher concentration of B in chickpea seeds was recorded at higher levels of B seed coating (3.0 g B kg −1 soil). Boron seed coating improved grain yield by 9-25% compared with the control treatment. Boron seed coating at lower rates (1.5 g kg −1) along with seed inoculation with BTB Bacillus sp. MN54 seemed a viable option to improve nodulation, growth, yield, and grain B biofortification of chickpea.

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Standardization of critical boron level in soil and leaves of coconut palms grown in a tropical Entisol

Cited by 6 publications

References 11 publications

Productivity and nutrition of fertigated açaí palms according to boron fertilization

Productivity and nutrition of fertigated açaí palms according to boron fertilization

Sustaining the Yield of Maize, Blackgram, Greengram, Groundnut, Cotton, Sugarcane, and Coconut through the Application of Nutrients and Plant Growth Regulator Mixture

Optimizing Boron Seed Coating Level and Boron-Tolerant Bacteria for Improving Yield and Biofortification of Chickpea

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