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ARS Home » Southeast Area » Tifton, Georgia » Crop Genetics and Breeding Research » Research » Publications at this Location » Publication #315151
Title: Nutrient uptake of peanut genotypes under different water regimes

Author
item JUNJITTAKARN, J - Khon Kaen University
item PIMRATCH, S - Khon Kaen University
item JOGLOY, S - Khon Kaen University
item HTOON, W - Khon Kaen University
item SINGKHAM, N - Khon Kaen University
item VORASOOT, N - Khon Kaen University
item TOOMSAN, B - Khon Kaen University
item Holbrook, Carl - Corley
item PATANOTHAI, A - Khon Kaen University

Submitted to: International Journal of Plant Production
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 9/20/2013
Publication Date: 10/15/2013
Citation: Junjittakarn, J., Pimratch, S., Jogloy, S., Htoon, W., Singkham, N., Vorasoot, N., Toomsan, B., Holbrook Jr, C.C., Patanothai, A. 2013. Nutrient uptake of peanut genotypes under different water regimes. International Journal of Plant Production. 7:677-692.

Interpretive Summary: Nutrient uptake of peanut is reduced under drought conditions. The objectives of this study were to investigate nutrient uptake of peanut genotypes in response to drought and to estimate the relationship between nutrient uptake and yield under different water regimes. Pot experiment was conducted in a greenhouse in the dry season 2002/03 and the rainy season 2003. Three soil moisture levels (fully irrigated, 2/3 available soil water, and 1/3 available water) were assigned as factor A and 11 peanut genotypes as factor B. Total nutrient uptake was determined at harvest. The nutrient uptakes of peanut plants grown under full irrigation were higher than those plants grown under water stress treatments. Tifton 8 was the highest genotype for all nutrient uptakes in both dry and rainy seasons, while ICGV 98303 and KK 60-3 had high nutrient uptake under water stress condition. The nutrient uptake of peanut in the rainy season was higher than the dry season. The relationship between nutrient uptake parameters, biomass and pod dry weight were positive and significant in both seasons. This information is important for peanut breeders interested in developing peanut lines with reasonably high nutrient uptake under drought conditions.

Technical Abstract: Drought is a serious environmental stress limiting growth and productivity in peanut and other crops. Nutrient uptake of peanut is reduced under drought conditions, which reduces yield. The objectives of this study were to investigate nutrient uptake of peanut genotypes in response to drought and to estimate the relationship between nutrient uptake and peanut yield under different water regimes. Pot experiment was conducted in a greenhouse in the dry season 2002/03 and the rainy season 2003. Three soil moisture levels [field capacity (FC), 2/3 available soil water (2/3 AW) and 1/3 available water (1/3 AW)] were assigned as factor A and 11 peanut genotypes as factor B. Total nutrient uptake was determined at harvest. Season x water regime interactions and differences in seasons, water regimes and genotypes were significant for N and K uptakes. The nutrient uptakes of peanut plants grown under FC were higher than those plants grown under water stress treatments. Tifton 8 was the highest genotype for all nutrient uptakes in both dry and rainy seasons, while ICGV 98303 and KK 60-3 had high nutrient uptake under water stress condition. The nutrient uptake of peanut in the rainy season was higher than the dry season. The relationship between nutrient uptake parameters, biomass and pod dry weight were positive and significant in both seasons. This information is important for peanut breeders interested in developing peanut lines with reasonably high nutrient uptake under drought conditions.