Improvements in nutrient uptake and nutrient use-efficiency in cotton cultivars released between 1973 and 2006

A field experiment was conducted during Kharif 2017 at Devanahalli village, Bengaluru rural district of Karnataka to evaluate the effect of different approaches of nutrient application on yield, nutrient uptake and use efficiency by carrot (Daucus carota L.). The experiment was laid out in randomized complete block design replicated thrice with eight treatments comprisingT1 (STCR target 20 tha-1 through inorganics), T2 (STCR target 20 tha-1 through integrated), T3 (STCR target 25 tha-1 through inorganics), T4 (STCR target 25 tha-1 through integrated), T5 (RDF (75: 63: 50) N, P2O5, K2O kg ha-1+ FYM), T6 (LMH /STL + FYM), T7 (Farmers practice (92.6:159:0) N, P2O5 kg ha-1 + FYM), T8 (Absolute control).Results revealed that significantly higher root (27.51 t ha-1) and shoot (16.48 t ha-1) yield were recorded in STCR target of 25 t ha-1 through integrated approach. Similarly, higher total uptake of nitrogen, phosphorus and potassium (297.07 kg, 57.48 kg and 253.81 kg ha-1, respectively) by carrot and the higher apparent recovery efficiency (0.35, 0.08 and 0.58 kg kg-1 of N, P2O5 and K2O, respectively) and agronomic nutrient use efficiency (26.10, 12.37 and 48.25 kg kg-1 of N, P2O5 and K2O, respectively) were recorded in the same STCR target of 25 t ha-1 through integrated approach. However, the better profit was recorded (value cost ratio: 43.30) in STCR target of 25 t ha-1 through inorganics. The STCR target of 25 t ha-1 through integrated approach had the most positive effect for the carrot cultivation.

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Estimating Nutrient Uptake Requirements for Melon Based on the QUEFTS Model

Agronomy ◽

10.3390/agronomy12010207 ◽

2022 ◽

Vol 12 (1) ◽

pp. 207

Author(s):

Meijuan Wen ◽

Sicun Yang ◽

Lin Huo ◽

Ping He ◽

Xinpeng Xu ◽

...

Keyword(s):

Nutrient Uptake ◽

Nutrient Use Efficiency ◽

Tropical Soils ◽

Fertilizer Application ◽

Linear Increase ◽

Nutrient Requirements ◽

Potential Yield ◽

Nutrient Use ◽

Fertilizer Recommendations ◽

Use Efficiency

Imbalanced and excessive fertilizer application has resulted in low yields and reduced nutrient use efficiency for melon production in China. Estimating nutrient requirements is crucial for effectively developing site-specific fertilizer recommendations for increasing yield and profit while reducing negative environmental impacts. Relationships between the yield and nutrient uptake requirements of above-ground dry matter were assessed using 1127 on-farm observations (2000–2020) from melon production regions of China. The quantitative evaluation of fertility of tropical soils (QUEFTS) model was used to estimate nutrient requirements. It predicted a linear increase in yield at balanced nutrient uptake levels until the yield reached approximately 60–80% of the potential yield. In order to produce 1000 kg of fruit, 2.9, 0.4 and 3.2 kg/ha of N, P and K (7.2:1.0:7.8), respectively, were required for above-ground parts, while the corresponding nutrient internal efficiencies were 345.3, 2612.6 and 310.0 kg per kg N, P and K, respectively, whereas 1.4, 0.2 and 1.9 kg of N, P and K were required to replace nutrients removed after harvest. The corresponding fruit absorption rates were 47.0%, 59.5% and 58.2%, respectively. Field validation experiments confirmed the consistency between observed and simulated uptake rates, indicating that this model could estimate nutrient requirements. These findings will help develop fertilizer recommendations for improving melon yield and nutrient use efficiency.

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Nutrient Uptake and Loss by Container-grown Deciduous and Evergreen Rhododendron Nursery Plants

HortScience ◽

10.21273/hortsci.46.2.296 ◽

2011 ◽

Vol 46 (2) ◽

pp. 296-305 ◽

Cited By ~ 1

Author(s):

Carolyn F. Scagel ◽

Guihong Bi ◽

Leslie H. Fuchigami ◽

Richard P. Regan

Keyword(s):

Nutrient Uptake ◽

Management Practices ◽

Nutrient Use Efficiency ◽

Absorption Capacity ◽

Uptake Efficiency ◽

Root Absorption ◽

Nutrient Use ◽

Biomass Loss ◽

Use Efficiency ◽

N Management

The influence of nitrogen (N) fertilizer application on plant allocation, uptake, and demand for other essential nutrients was evaluated from May 2005 to Feb. 2006 in evergreen Rhododendron ‘P.J.M. Compact’ (PJM) and ‘English Roseum’ (ER) and deciduous Rhododendron ‘Gibraltar’ (AZ) grown in containers filled with soilless substrate. Net nutrient uptake and losses were calculated using piecewise regression and uptake efficiency, root absorption capacity, aboveground demand, nutrient use efficiency, and uptake ratios between N and other nutrients (N ratios) were calculated using net uptake between harvest dates. Nitrogen application increased uptake rate of all nutrients, enhanced late-season uptake of many nutrients, and increased the rate of nutrient loss during the winter. Nutrient uptake often occurred as late as November in plants grown with N but was usually undetectable after September in plants grown without additional N fertilizer. Nutrient losses during the winter were not always associated with biomass loss and were related to differences in preferential nutrient allocation to different structures and the plant's ability to export nutrients before biomass loss. Plants with a greater potential for rapid growth were more capable of later-season nutrient uptake than plants with slower growth rates. Nitrogen availability altered N ratios indicating that when adding N to container-grown Rhododendron, fertilizers with higher ratios of N/phosphorus (PJM, AZ), N/calcium (PJM, ER), N/boron (PJM AZ), N/copper (PJM, ER), and N/iron (PJM, ER) and lower ratios of N/potassium (PJM, ER, AZ), N/sodium (PJM, ER, AZ), N/calcium (AZ), N/boron (ER), N/manganese (AZ), and N/zinc (ER) may be needed to optimize growth and minimize nutrient inputs. Increasing N availability altered uptake efficiency, root absorption capacity, aboveground demand, and nutrient use efficiency for several nutrients, indicating that changes in N management practices need to consider how altering N application rates may influence the plant's ability to take up and use other nutrients. This information can be used to develop fertilizer formulations to minimize excess application of nutrients and to evaluate the potential effects of altering N management practices on use of production resources. Our results indicate that nutrient management strategies for perennial crops such as Rhododendron need to take into consideration not only the nutrient demand for current growth, but also how to optimize nutrient availability for uptake that contributes to future growth potential and end-product quality.

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Influence of drip fertigation on nutrient uptake and nutrient use efficiency of aerobic paddy

AN ASIAN JOURNAL OF SOIL SCIENCE ◽

10.15740/has/ajss/10.2/266-270 ◽

2015 ◽

Vol 10 (2) ◽

pp. 266-270

Author(s):

R. KRISHNA MURTHY ◽

K. PUSHPA

Keyword(s):

Nutrient Uptake ◽

Nutrient Use Efficiency ◽

Nutrient Use ◽

Use Efficiency ◽

Drip Fertigation

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Effect of Substrate Flow Rate on Nutrient Uptake and Use Efficiency in Hydroponically Grown Swiss Chard (Beta vulgaris L. ssp. cicla ‘Seiyou Shirokuki’)

Agronomy ◽

10.3390/agronomy11102050 ◽

2021 ◽

Vol 11 (10) ◽

pp. 2050

Author(s):

Bateer Baiyin ◽

Kotaro Tagawa ◽

Mina Yamada ◽

Xinyan Wang ◽

Satoshi Yamada ◽

...

Keyword(s):

Plant Growth ◽

Nutrient Uptake ◽

Beta Vulgaris ◽

Flow Rate ◽

Growth Parameters ◽

Nutrient Use Efficiency ◽

Soil Culture ◽

Nutrient Use ◽

Swiss Chard ◽

Use Efficiency

Unlike in soil culture, a substrate (nutrient solution) in a hydroponics system can flow, and this can affect both nutrient uptake and plant growth. In this study, we hydroponically cultivated Swiss chard (Beta vulgaris L. ssp. cicla) under different flow rates to analyze changes in the growth, nutrient uptake, and nutrient use efficiency. When the flow rate was intensified from 2 to 4 L/min, leaf area, the fresh weight, dry weight, and root length increased. However, when the flow rate was increased from 4 to 8 L/min, values of these growth parameters decreased. The nutrient uptake had a similar trend relative to the growth parameters and nutrient use efficiency of macronutrient elements, increased as the flow rate increased. This indicates that the flow rate affects plant growth by influencing the nutrient uptake, and an increase in the flow rate can aid in improving nutrient use efficiency. In hydroponics, regulating the flow rate at a reasonable volume is recommended to increase yield by enhancing nutrient use efficiency, but too intensive a flow rate may cause excessive physical stimulation to plants and inhibit their growth. Therefore, it is important to choose an appropriate substrate flow rate for optimal hydroponics production.

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