Nitrogen and potassium nutrition affect yield, dry weight partitioning, and nutrient-use efficiency of sweet potato

Marti, Hector Ruben; Mills, Harry A.

doi:10.1081/css-120002394

Cited by 22 publications

(25 citation statements)

References 7 publications

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“…The efficiency of ZnSO 4 in combination with lime + FYM + NPK toward K recovery was 65.2 percent, closely followed by lime + FYM + NPK + MgSO 4 (64.7 percent). These results are in agreement with the findings of Martí and Mills (2002).…”

Section: Notesupporting

confidence: 93%

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Long-Term Effect of Lime, Mycorrhiza, and Inorganic and Organic Sources on Soil Fertility, Yield, and Proximate Composition of Sweet Potato in Alfisols of Eastern India

Laxminarayana

John

Mukherjee

et al. 2015

Communications in Soil Science and Plant Analysis

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A field experiment was conducted for five kharif seasons (2006)(2007)(2008)(2009)(2010)(2011) in an Alfisol to study the effect of integrated use of lime, mycorrhiza, and inorganic and organics on soil fertility, yield, and proximate composition of sweet potato. Application of graded doses of nitrogen, phosphorus, and potassium (NPK) significantly increased the mean tuber yield of sweet potato by 44, 106, and 130 percent over control. Green manuring along with 1 / 2 NPK showed greater yield response over that of 1 / 2 NPK. The greatest mean tuber yield was recorded due to integrated application of lime, farmyard manure (FYM), NPK, and MgSO 4 (13.69 t ha −1 ) over the other treatments. Inoculation of mycorrhiza combined with lime, FYM, and NPK showed a significant yield response of 10 percent over FYM + NPK. Conjunctive use of lime, inorganics, and organics not only produces sustainable crop yields but also improve soil fertility, nutrient-use efficiency, and apparent nutrient recovery in comparison to NPK and organic manures.

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Section: Notesupporting

confidence: 93%

“…These results are in agrement with the findings of Martí and Mills (2002). Among the organic sources, integrated application of lime + green manure + 1 / 2 NPK recorded the greatest N recovery (57.2 percent) followed by lime + neem cake + 1 / 2 NPK (43.9 percent) and lime + FYM + 1 / 2 NPK (42.8 percent).…”

Section: Notesupporting

confidence: 86%

Long-Term Effect of Lime, Mycorrhiza, and Inorganic and Organic Sources on Soil Fertility, Yield, and Proximate Composition of Sweet Potato in Alfisols of Eastern India

Laxminarayana

John

Mukherjee

et al. 2015

Communications in Soil Science and Plant Analysis

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“…They modeled soil NO 3 -N sampled at a depth of 15 cm to relative yield at 29 DAT and reported a minimum of 74 kgÁha -1 was required by those cultivars for adequate N nutrition. 'Centennial' had a positive yield response to N rates as high as 112 kgÁha -1 but only when ample K was provided (up to 112 kgÁha -1 ) (Marti and Mills, 2002). Similar observations were made by Marti and Mills (2002) and Purcell et al (1982) who reported a yield increase with an increase in K rate for 'Centennial', but not 'Jewel'.…”

Section: Resultssupporting

confidence: 71%

“…Nitrogen management is important to optimize yields of sweetpotato. N deficiencies early in the season may delay foliar development, thus delaying root carbohydrate acquisition (Villagarcia et al, 1998), whereas excess N is subject to leaching and can reduce yield at the expense of additional foliar growth (Hammett et al, 1984;Marti and Mills, 2002;Villagarcia et al, 1998). Nitrogen demands vary greatly among cultivars, and yield response to fertilizer N uptake is closely associated with climactic factors, making prediction difficult (Mascianica et al, 1985;Phillips et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

Nutrient Management with Cover Crops and Compost Affects Development and Yield in Organically Managed Sweetpotato Systems

Treadwell¹,

Creamer²,

Hoyt³

et al. 2008

horts

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A 3-year field experiment was initiated in 2001 to evaluate different organic sweetpotato production systems that varied in cover crop management and tillage. Three organic systems: 1) compost and no cover crop with tillage (Org-NCC); 2) compost and a cover crop mixture of hairy vetch and rye incorporated before transplanting (Org-CCI); and 3) compost and the same cover crop mixture with reduced tillage (Org-RT) were compared with a conventionally managed system (Conv) with tillage and chemical controls. Yield of No. 1 sweetpotato roots and total yield were similar among management systems each year, except for a reduction in yield in Org-RT in 2002. The percentage of No. 1 grade roots was at least 17% and 23% higher in Org-CCI and Org-NCC than Org-RT in 2001 and 2002, respectively, and similar to Conv in 2001 and 2004. Organic and conventional N sources contributed to soil inorganic N reserves differently the 2 years this component was measured. In 2002, soil inorganic N reserves at 30 DAT were in the order: Org-CCI (90 kg·ha−1) > Org-NCC (67 kg·ha−1) > Org-RT (45 kg·ha−1), and Conv (55 kg·ha−1). No differences in soil inorganic N reserves were observed among systems in 2004. Sweetpotato N, P, and K tissue concentrations were different among systems only in 2004. That year, at 60 days after transplanting, tissue N, P, and K were greatest in Org-CCI. In 2001 and 2004, N (4.09% to 4.56%) and K (3.79% to 4.34%) were higher than sufficiency ranges for N (3.2% to 4.0%) and K (2.5% to 3.5%) defined by North Carolina Department of Agriculture and Consumer Services recommendations for all treatments. No tissue macronutrient or micronutrient concentrations were limiting during this experiment. Reduced rainfall during the 2002 sweetpotato growing season may have contributed to the low microbially mediated plant-available N from the organic fertilizer sources. Despite differences in the nutrient content of organic and conventional fertility amendments, organically managed systems receiving compost with or without incorporated hairy vetch and rye produced yields equal to the conventionally managed system.

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“…Por outro lado, o K é importante para a translocação de carboidratos, para o uso eficiente da água e pode favorecer a qualidade do produto a ser comercializado, entre outras funções (MARSCHNER, 1995). Além disso, há o fato de a batata-doce ser expressivamente responsiva à adubação potássica (MONTEIRO; PERESSIN, 1997;MARTI;MILLS, 2002;FILGUEIRA, 2003;ECHER et al, 2009b;BRITO et al, 2006). Portanto, evidencia-se que, mais importante do que as adubações isoladas de N e K na batata-doce, são as interações entre ambas.…”

Section: Fonte: Elaboração Dos Autoresunclassified

Adubação de cobertura na batata-doce com doses combinadas de nitrogênio e potássio

Foloni

Corte

et al. 2013

Sem. Ci. Agr.

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Nitrogen and potassium nutrition affect yield, dry weight partitioning, and nutrient-use efficiency of sweet potato

Cited by 22 publications

References 7 publications

Long-Term Effect of Lime, Mycorrhiza, and Inorganic and Organic Sources on Soil Fertility, Yield, and Proximate Composition of Sweet Potato in Alfisols of Eastern India

Long-Term Effect of Lime, Mycorrhiza, and Inorganic and Organic Sources on Soil Fertility, Yield, and Proximate Composition of Sweet Potato in Alfisols of Eastern India

Nutrient Management with Cover Crops and Compost Affects Development and Yield in Organically Managed Sweetpotato Systems

Adubação de cobertura na batata-doce com doses combinadas de nitrogênio e potássio

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