Nitrogen and phosphorus in senescent leaves of field-grown common bean cultivars and their contribution to crop nutrient budget

Araújo, Adelson Paulo; Pin, Bianca Del; Teixeira, Marcelo Grandi

doi:10.1016/j.fcr.2011.11.009

Cited by 11 publications

(3 citation statements)

References 34 publications

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“…In soybean, N assimilation was increased under elevated [CO 2 ] in proportion to the increase in biomass such that C/N was unchanged (Rogers et al, 2006). While senescing leaves can be a source of N for the developing seed, only about half of leaf nitrogen is remobilized during senescence in legumes (Araujo et al, 2012). Although estimates vary widely, a detailed analysis suggests that between 7 and 12 mol CO 2 assimilated are needed to power the fixation of 1 mol N in legumes (Minchin & Witty, 2005).…”

Section: Discussionmentioning

confidence: 99%

Decreasing, not increasing, leaf area will raise crop yields under global atmospheric change

Srinivasan

Kumar

Long

2016

Global Change Biology

126

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Without new innovations, present rates of increase in yields of food crops globally are inadequate to meet the projected rising food demand for 2050 and beyond. A prevailing response of crops to rising [CO 2] is an increase in leaf area. This is especially marked in soybean, the world's fourth largest food crop in terms of seed production, and the most important vegetable protein source. Is this increase in leaf area beneficial, with respect to increasing yield, or is it detrimental? It is shown from theory and experiment using open‐air whole‐season elevation of atmospheric [CO 2] that it is detrimental not only under future conditions of elevated [CO 2] but also under today's [CO 2]. A mechanistic biophysical and biochemical model of canopy carbon exchange and microclimate (MLCan) was parameterized for a modern US Midwest soybean cultivar. Model simulations showed that soybean crops grown under current and elevated (550 [ppm]) [CO 2] overinvest in leaves, and this is predicted to decrease productivity and seed yield 8% and 10%, respectively. This prediction was tested in replicated field trials in which a proportion of emerging leaves was removed prior to expansion, so lowering investment in leaves. The experiment was conducted under open‐air conditions for current and future elevated [CO 2] within the Soybean Free Air Concentration Enrichment facility (SoyFACE) in central Illinois. This treatment resulted in a statistically significant 8% yield increase. This is the first direct proof that a modern crop cultivar produces more leaf than is optimal for yield under today's and future [CO 2] and that reducing leaf area would give higher yields. Breeding or bioengineering for lower leaf area could, therefore, contribute very significantly to meeting future demand for staple food crops given that an 8% yield increase across the USA alone would amount to 6.5 million metric tons annually.

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Section: Discussionmentioning

confidence: 99%

Decreasing, not increasing, leaf area will raise crop yields under global atmospheric change

Srinivasan

Kumar

Long

2016

Global Change Biology

126

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“…If the soybean crop is still in the vegetative phase, then most assimilates formed in photosynthetic process will be translocated to the newly formed organs, and some will be stored as energy reserves (Putra et al 2017). At the time soybean plants began to enter the generative phase, assimilates stored as energy reserves can be reused for the formation of seed and pods (Atkins and Smith 2007;Araújo et al 2012).…”

Section: Figure 2 Relationship Between Leaf Area and The Photosynthementioning

confidence: 99%

Physiological and Yield of Soybean Under Kayu Putih (Melaleuca cajuputi subsp. cumingiana) Stands with N, P, and K Fertilization on Lithic Haplustert

Ismoyojati¹,

Tohari

Suryanto

et al. 2020

Agrotechnology Res J

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Fertilization of N, P, and K on soybean planted under Kayu Putih stands to serve to increase soil nutrients. Lithic Haplustert is a subgroup of Vertisol with a relatively low fertility and organic matter with a heavy clay texture. This research aims to determine the response of soybean to the application of N, P, and K fertilizers on the Lithic Haplustert in physiology and yield. This research was conducted from February to May 2015 in the Srikoyo hamlet, Menggoran village, Playen district, Gunungkidul regency, Yogyakarta. The experimental design is split-split plot with three levels of fertilization of N (0, 25, 50 kg urea ha-1), P (0, 150, 300 kg SP-36 ha-1), and K (0, 75, 150 kg KCl ha-1). The results showed that the application of 50 kg urea ha-1 and 300 kg SP-36 ha-1 can increase the leaf area and photosynthesis rate. Dosage 150 kg KCl ha-1 fertilizer increased the concentration of N, P, and K in the plant tissues significantly.

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“…The resulting decrease in leaf photosynthetic capacity may thus limit yield by shortening the duration of the seed-filling period (Sinclair and Horie, 1989;Munier-Jolain et al, 2008;Bueckert et al, 2015). Nitrogen remobilization not only affects yield, but also N yield since N remobilized from vegetative parts is the major contributor to seed N in most grain crops (Malagoli et al, 2005;Schiltz et al, 2005;Kichey et al, 2007;Araujo et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

High Temperatures During the Seed-Filling Period Decrease Seed Nitrogen Amount in Pea (Pisum sativum L.): Evidence for a Sink Limitation

Larmure

Munier-Jolain

2019

Front. Plant Sci.

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Higher temperatures induced by the ongoing climate change are a major cause of yield reduction in legumes. Pea (Pisum sativum L.) is an important annual legume crop grown in temperate regions for its high seed nitrogen (N) concentration. In addition to yield, seed N amount at harvest is a crucial characteristic because pea seeds are a source of protein in animal and human nutrition. However, there is little knowledge on the impacts of high temperatures on plant N partitioning determining seed N amount. Therefore, this study investigates the response of seed dry matter and N fluxes at the whole-plant level (plant N uptake, partitioning in vegetative organs, remobilization, and accumulation in seeds) to a range of air temperature (from 18.4 to 33.2°C) during the seed-filling-period. As pea is a legume crop, plants relying on two different N nutrition pathways were grown in glasshouse: N 2-fixing plants or NO 3 −-assimilating plants. Labeled nitrate (15 NO 3 −) and intra-plant N budgets were used to quantify N fluxes. High temperatures decreased seed-filling duration (by 0.8 day per°C), seed dry-matter and N accumulation rates (respectively by 0.8 and 0.032 mg seed −1 day −1 per°C), and N remobilization from vegetative organs to seeds (by 0.053 mg seed −1 day −1 per°C). Plant N 2-fixation decreased with temperatures, while plant NO 3 − assimilation increased. However, the additional plant N uptake in NO 3 −-assimilating plants was never allocated to seeds and a significant quantity of N was still available at maturity in vegetative organs, whatever the plant N nutrition pathway. Thus, we concluded that seed N accumulation under high temperatures is sink limited related to a shorter seed-filling duration and a reduced seed dry-matter accumulation rate. Consequently, sustaining seed sink demand and preserving photosynthetic capacity of stressed plants during the seed-filling period should be promising strategies to promote N allocation to seeds from vegetative parts and thus to maintain crop N production under exacerbated abiotic constraints in field due to the ongoing climate change.

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Nitrogen and phosphorus in senescent leaves of field-grown common bean cultivars and their contribution to crop nutrient budget

Cited by 11 publications

References 34 publications

Decreasing, not increasing, leaf area will raise crop yields under global atmospheric change

Decreasing, not increasing, leaf area will raise crop yields under global atmospheric change

Physiological and Yield of Soybean Under Kayu Putih (Melaleuca cajuputi subsp. cumingiana) Stands with N, P, and K Fertilization on Lithic Haplustert

High Temperatures During the Seed-Filling Period Decrease Seed Nitrogen Amount in Pea (Pisum sativum L.): Evidence for a Sink Limitation

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