Biomass and nitrogen accumulation in white oat (Avena sativa L.) under water deficit
Keywords:
export, extraction, irrigation, absorption rate, dry massAbstract
Knowledge on nitrogen absorption rate by crops can indicate important managements, especially the definition of rates of this nutrient and the best time for topdressing application. This study aimed to evaluate and compare the accumulation of biomass and nitrogen in white oat cultivated under severe, moderate and no water deficit. Treatments consisted of levels of irrigation, with four repetitions. The treatments under severe water deficit (L1), moderate deficit (L3) and no deficit (L5) received 11%, 60% and 100% of the water volume evapotranspired by the crop (ETc). For each treatment, six plants were collected in each replicate. After collection, plants were separated into leaves, culm and reproductive structures (panicle + grains). Second and third order regressions were tested to model the behavior of biomass and nitrogen accumulation in white oat leaves, culms, reproductive structures and total over time. The maximum total nitrogen accumulation in white oat plants in the treatments L1, L3 and L5 was 50 kg ha-1, 163 kg ha-1 and 246 kg ha1, respectively. Severe water deficit drastically reduced biomass and nitrogen accumulation in white oat. Severe water deficit causes earlier peak of biomass and nitrogen accumulation, reduces nitrogen accumulation rate and shortens cycle of white oats.
References
Ahmad M, Dar ZA & Habib M (2014) A review on oat (Avena sativa L.) as a dual-purpose crop. Scientific Research and Essays, 09:52-59.
Allen RG, Pereira LS, Raes D & Smith M (1998) Crop evapotranspiration - Guidelines for computing crop water requirements. Roma, FAO. 300 p. (FAO Irrigation and Drainage Paper, 56)
Alvares CA, Stape JL, Sentelhas PC, Moraes G, Leonardo J & Sparovek G (2013) Köppen’s climate classification map for Brazil. Meteorologische Zeitschrift, 22:711-728
Bataglia OC, Furlani AMC, Teixeira JPF, Furlani PR & Gallo JR (1983) Métodos de análise química de plantas. Campinas, Instituto Agronômico. 48p. (Boletim Técnico, 78)
Cantarella H, Raij BV & Camargo CEO (1997) Recomendações técnicas de adubação e calagem para o estado de São Paulo. Campinas, Instituto Agronômico de Campinas. 57p. (Boletim Técnico, 100)
Ceccon G, Grassi Filho H & Bicudo SJ (2004) White oat (Avena sativa L.) grains yield using different plant densities and nitrogen levels. Ciência Rural, 34:1723-1729
Conab - Companhia nacional de abastecimento (2018) Acompanhamento da safra brasileira: grãos. Brasília, Conab. 142p. (Boletim Técnico, 5)
Djaman K, Irmak S, Martin DL, Ferguson RB & Bernards ML (2013) Plant nutrient uptake and soil nutrient dynamics under full and limited irrigation and rainfed maize production. Agronomy Journal, 105:527-538
Embrapa - Empresa Brasileira de Pesquisa Agropecuária (2013) Sistema brasileiro de classificação de solos. 3 ed. Brasília, Embrapa. 353p.
Escosteguy PAV, Fontoura SMV & Carvalho IQ (2014) Fertilidade do solo, calagem e adubação. In: Lângaro NC & Carvalho IQ (Eds.) Indicações técnicas para a cultura da aveia. Passo Fundo, Editora UPF. p.24-43.
Frizzone JA, Teodoro REF, Pereira AS & Botrel TA (1995) Irrigation depths and nitrogen levels for forage oat (Avena sativa L.) production. Scientia Agricola, 52:578-586
Gopalakrishnan S, Watanabe T, Pearse JS, Ito O, Hossain ZAKM & Subbano GV (2009) Biological nitrification inhibition by Brachiaria humidicola roots varies with soil type and inhibits nitrifying bacteria, but not other major soil microorganisms. Soil Science & Plant Nutrition, 55:725-733
Jafari S, Garmdareh SEH & Azadegan B (2019) Effects of drought stress on morphological, physiological, and biochemical characteristics of stock plant (Matthiola incana L.). Scientia Horticulturae, 253:128-133
Jat H, Kaushik MK, Nepalia V & Singh D (2017) Effect of irrigation schedule and nitrogen fertilization on growth, yield and quality of fodder oat (Avena sativa L.). Journal of Pharmacognosy and Phytochemistry, 06:2040-2042
Kolchinski EM & Schuch LOB (2003) Efficiency of nitrogen utilization of white oat cultivars in relation to nitrogen fertilization. Revista Brasileira de Ciência do Solo, 27:1033-1038
Lauer DA (1983) Line-Source Sprinkler Systems for Experimentation with Sprinkler-Applied Nitrogen Fertilizers. Soil Science Society of America Journal, 47:124-128
Lisar SY, Motafakkerazad R, Hossain MM & Rahman IM (2012) Water stress in plants: causes, effects and responses. In: Ismail MD, Mofizur R & Hiroshi H (Eds.) Water stress. Slavka Krautzeka, IntechOpen Rijeka & Croácia. p.1-13.
Montilla-Bascón G, Sánchez-Martín J, Rispail N, Rubiales D, Mur L, Langdon T & Prats E (2013) Genetic diversity and population structure among oat cultivars and landraces. Plant molecular biology reporter, 31:1305-1314.
Rasane P, Jha A, Sabikhi L, Kumar A & Unnikrishnan VS (2015) Nutritional advantages of oats and opportunities for its processing as value added foods-a review. Journal of Food Science and Technology, 52:662-675.
Rosolem CA, Echer FR, Lisboa IP & Barbosa TS (2012) Nitrogen, Phosphorus and Potassium Accumulation in Cotton Grown in Conventional and Narrow Spacing. Revista Brasileira de Ciência do Solo, 36:457-466
Sánchez-Martín J, Rubiales D, Flores F, Emeran AA, Shtaya MJY, Sillero JC & Prats E (2014) Adaptation of oat (Avena sativa) cultivars to autumn sowings in Mediterranean environments. Field Crops Research, 156:111-122.
Silva IR & Mendonça ES (2007) Matéria orgânica do solo. In: Novais RF, Alvarez VH, Barros NF, Fontes RLF, Cantarutti RB & Neves JCL (Eds) Fertilidade do solo. Viçosa, Sociedade Brasileira de Ciência do Solo. p.275-374.
Soratto RP, Fernandes AM, Santos LAD & Job ALG (2013) Nutrient extraction and exportation by common bean cultivars under different fertilization levels: I-macronutrients. Revista Brasileira de Ciência do Solo, 37:1027-1042
USDA - United States Department of Agriculture (2018) World Agricultural Production. Circular Series. Disponível em:< https://apps.fas.usda.gov/psdonline/circulars/production.pdf>. Access: February 20, 2018
Wang JY, Turner NC, Liu YX, Siddique KH & Xiong YC (2017a) Effects of drought stress on morphological, physiological and biochemical characteristics of wheat species differing in ploidy level. Functional Plant Biology, 44:219-234
Wang Y, Magid J, Thorup-Kristensen K & Jensen LS (2017b) Genotypic differences in growth, yield and nutrient accumulation of spring wheat cultivars in response to long-term soil fertility regimes. Agriculturae Scandinavica, Section B—Soil & Plant Science, 67:126-133
