NPK fertilization on initial growth of physic nut seedlings in Quartzarenic Neossol

Souza, Patrícia Teixeira de; Silva, Enilson de Barros; Grazziotti, Paulo Henrique; Fernandes, Luiz Arnaldo

doi:10.1590/s0100-06832011000200025

Cited by 17 publications

(20 citation statements)

References 11 publications

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“…Dorta-Santos [4] stated that no productivity constraints occurred with the nutrient contents in the young leaves that they obtained. However, the K content obtained in our experiment was below that reported in [4] and [17], but similar to that obtained by [18] and [19]), and may be associated with progressive soil K depletion in wet bulbs (Figure 2), in which no K fertilization was applied. Dorta-Santos [4] found that the soil parameters which mostly influenced seed production were P and K. Given the richness of our soil P, K fertilization is recommended.…”

Section: Resultssupporting

confidence: 89%

Reclaimed Water Use in Biofuel Production

Palacios-Díaz

Mendoza-Grimón

Brito³

et al. 2015

Water

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Jatropha curcas L., a toxic species that does not interfere with the food chain, produces biodiesel of better environmental quality than mineral oils. However, in order to cultivate it sustainably, it is necessary to optimize the limited resources used, mainly water and soil. Therefore, in arid areas, it is necessary to cultivate under intensive conditions, irrigate with reclaimed water and cut production costs. To optimize water consumption, partial root-zone drying (PRD), which keeps a part of the root system dry, was used. This water management strategy, employed successfully in other oil crops, yielded less fruit per bunch, but more fruit bunches per plant. This fact will probably allow to establish higher planting density and, consequently, higher productivity per surface unit. This is one of the few available options for improving profitability as production per tree is stable (1.25 kg seed plant water per L of oil according to our best estimations), to consider it a profitable option.

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Section: Resultssupporting

confidence: 89%

Reclaimed Water Use in Biofuel Production

Palacios-Díaz

Mendoza-Grimón

Brito³

et al. 2015

Water

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“…According to Arruda et al (2004), in acid soils with pH below 4.5, roots of physic nut do not grow. Thus, the acidity correction and soil fertility are critical for success and profitability in this culture (LAVIOLA;DIAS, 2008;SOUZA et al, 2011). This finding becomes even more relevant because the main producing regions of physic nut in Brazil are located in acid soils, characterized by low base saturation and high aluminum (Al 3+ ) levels, sufficient to alter the normal growth of many species of cultivated plants.…”

Section: Introductionmentioning

confidence: 99%

Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

et al. 2012

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Aluminum (Al 3+) toxicity is a major limiting factor to crop productivity in acid soils. The effects of aluminum on root and shoot growth of physic nut (Jatropha curcas L.) young plants and, the uptake and distribution of phosphorus, calcium, magnesium and aluminum in the roots and shoots were investigated in the present study. Plants were grown in 2.5L pots in a greenhouse. After fourteen days of adaptation to nutrient solution, plants were exposed to Al concentrations of 0, 370, 740, 1,100 and 1,480 μmol L -1 , corresponding to an active Al 3+ solution of 13.3, 35.3, 90.0, 153.3 and 220.7 μmol L -1 , respectively. The dry matter partitioning between roots, stems and leaves, and the concentrations of P, Ca, Mg and Al in plant tissue, were measured after 75 days exposure to Al. The increasing level of Al 3+ activity in solution progressively decreased the growth of the shoot and root of physic nut plants, and at the two highest active Al 3+ levels, plants showed morphological abnormalities typical of the toxicity caused by this metal. Higher Al 3+ activity reduced P concentrations in leaves and Ca and Mg in leaves and roots of physic nut, demonstrating the effect of Al on the uptake, transport and use of these nutrients by plants. The Al accumulated preferentially in the roots of physic nut, whereas only a small amount was transported to shoots. Key words: Jatropha curcas, aluminum toxicity, aluminum tolerance Resumo

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“…Freiberg et al (2014) found that the P dose of 57 mg dm -3 promoted adequate conditions for the initial growth of jatropha plants. Dose of 55 mg dm -3 of P pot -1 was the best recommendation of phosphate fertilization for obtaining vigorous plants in a Quartzarenic Neosol with low contents of organic matter, according to Souza et al (2011). With respect to the recommendation of organic fertilization for jatropha, Ghosh et al (2007) recommend the application of 3 t ha -1 of jatropha cake in sandy soils under rainfed conditions.…”

Section: Introductionmentioning

confidence: 99%

Response of jatropha to organic and phosphate fertilization under irrigated conditions

Lima¹,

Silva²,

Azevedo³

et al. 2016

Aust J Crop Sci

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Jatropha (Jatropha curcas L.) is a perennial species that requires expressive amounts of nutrients in order to produce satisfactorily. An experiment was conducted using pots, arranged in a randomized block design, with four replicates and one plant per plot, in order to evaluate different fertilization recommendations (phosphate fertilizer and cattle manure) based on soil analysis. The treatments consisted of a 4 x 4 factorial scheme, which represented 4 recommendations of organic fertilization [absence of organic fertilization (0 t ha -1 ), recommended dose (4 t ha -1 ), 1.5 times the recommended dose (6 t ha -1 ) and 2 times the recommended dose (8 t ha -1 )] and 4 recommendations of phosphate fertilization [absence of phosphate fertilization (0 kg ha -1 ), recommended dose (90 kg ha -1 ), 1.5 times the recommended dose (135 kg ha -1 ) and 2 times the recommended dose (180 kg ha -1 ). One hundred and eighty days after seedlings were transplanted to the pots, growth variables and production components were measured. Plant height, number of branches, stem diameter, leaf area, number of inflorescences, number of fruits, number of bunches, number of fruits per bunch, mass of fruits, number of seeds per fruit, number of seeds per plant and total mass of seeds per plant were influenced by the fertilization recommendations. The recommendation of organic and phosphate fertilization suggested by the laboratory of soil analysis (4 t ha -1 of organic matter and 90 kg ha -1 of phosphorus) was insufficient to obtain productive plants. The isolated use of organic matter in fertilization of jatropha promotes positive effects on growth variables and production components. The application of 1.5 the dose of organic matter recommended by the laboratory of soil analysis, corresponding to 6 t ha -1 of cattle manure, isolated, or associated with 135 kg ha -1 of P, is sufficient to supply the nutritional demand for N and P in the first cultivation cycle. Phosphate fertilization associated with organic fertilization significantly influenced plant height, number of branches, stem diameter, leaf area, number of seeds per plant and total mass of seeds of jatropha plants.Keywords: Jatropha curcas L.; fertilization recommendation; cattle manure Abbreviations: S_Sum of bases; T_Cation exchange capacity; V_Saturation of bases; OM_Organic matter; DAT_Days after transplant ; LA_Leaf area , Σ_sum of leaf area; L_Midrib lenght; W_leaf width; PH_ Plant height , NLB_Number of leaves per plant, NBP_Number of branches per plant , SD_Stem diameter; LA_Leaf area (%); ns_Not significant; DF_Degree of freedom; C.V_Coefficient of variation; NIP_Number of inflorescences per plant; NFP_Number of fruits per plant; NBP_Number of bunches per plant; NFB_Number of fruits per bunch; MMF_Mean mass of fruits; NSF_Number of seeds per fruit: NSP_Number of seeds per plant; MSP_Mass of seeds per plant.

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NPK fertilization on initial growth of physic nut seedlings in Quartzarenic Neossol

Cited by 17 publications

References 11 publications

Reclaimed Water Use in Biofuel Production

Reclaimed Water Use in Biofuel Production

Effects of aluminum on plant growth and nutrient uptake in young physic nut plants

Response of jatropha to organic and phosphate fertilization under irrigated conditions

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