Phosphorus-use Efficiency by Pepper (Capsicum frutescens) and Okra (Abelmoschus esculentum) at Different Phosphorus Fertilizer Application Levels on Two Tropical Soils

2005 ◽  
Vol 5 (10) ◽  
pp. 1785-1791 ◽  
Author(s):  
Ezekiel A. Akinrin ◽  
Ismail O. Adigun .
Keyword(s):  
Tropical Soils ◽  
Fertilizer Application ◽  
Capsicum Frutescens ◽  
Phosphorus Use Efficiency ◽  
Phosphorus Fertilizer ◽  
Use Efficiency

scholarly journals Phosphorus fertilization with enhanced efficiency in soybean and corn crops

2020 ◽  
pp. 78-84
Author(s):  
Luiz A. Zanão Jr ◽  
Orivaldo Arf ◽  
Roberto dos A. Reis Jr ◽  
Natalia Pereira
Keyword(s):  
Field Experiments ◽  
Tropical Soils ◽  
Water Soluble ◽  
Phosphorus Fertilization ◽  
Corn Yield ◽  
Phosphorus Use Efficiency ◽  
Phosphorus Fertilizer ◽  
Different Seasons ◽  
Enhanced Efficiency Fertilizer ◽  
High Yields

Due to the low natural availability of phosphorus (P) in tropical soils and the plant’s need for P, the use of phosphorus fertilizers of increased efficiency is an important tool for achieving high yields. The aims of this study were to evaluate plant growth, foliar P content and yield of soybean and corn crops in different seasons and places in response to P rates and sources. The sources of P were monoammonium phosphate (MAP) and Policote coated MAP (Policote+MAP). Field experiments were carried out comparing MAP performance compared to Policote coated MAP (MAP+Policote), an additive based on water soluble polymers. Experiments formed by P sources (MAP including 11% N, 52% P2O5 and MAP+Policote including 10% N, 49% P2O5) and rates were carried out in soybean and corn crops in different dates and sites. In the soybean crop, a (2x4) +1 factorial was used, comprising of two sources such as MAP and MAP+Policote and four rates of P (30, 60, 90 and 120 kg ha-1 of P2O5), besides the control. For corn, a (2x5) factorial was used, including two sources and five rates of P (0, 40, 80, 120 and 160 kg ha-1 of P2O5). The results showed that phosphorus fertilization would increase soybean and corn plant heights and yields in different seasons and places. Soybean and corn yield and agronomic phosphorus use efficiency were higher with Policote coated phosphorus fertilizer than with conventional phosphorus fertilizer. Policote coated phosphorus fertilizer can be used as an enhanced efficiency fertilizer because it increased soybean and corn yields in different seasons and places.

scholarly journals Estimating Nutrient Uptake Requirements for Melon Based on the QUEFTS Model

Agronomy ◽  
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.

scholarly journals Combined Application of Phosphorus Fertilizer with Tithonia Biomass Improves Grain Yield and Agronomic Phosphorus Use Efficiency of Hybrid Maize

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Solomon Endris
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Crop Productivity ◽  
Plant Nutrients ◽  
Available Phosphorus ◽  
Phosphorus Use Efficiency ◽  
Phosphorus Fertilizer ◽  
Significant Treatment ◽  
Agronomic Efficiency ◽  
Use Efficiency

Low soil phosphorous level is among several constraints limiting crop productivity in southwestern Ethiopia. The dominant soil types in the region are acidic nitosols that are low in plant-available phosphorus. Most farmers cultivate maize with minimal external inputs and hence result in suboptimal yield levels. The effect of applying Tithonia biomass and phosphorus fertilizer on the agronomic efficiency of phosphorus and yield of maize was therefore investigated in a randomized complete block design with three replications. Tithonia (Tithonia diversifolia) biomass and Triple Superphosphate (TSP) were used as organic and inorganic sources of phosphorus, respectively. Significant treatment differences (P<0.01) were observed for most of the parameters studied including agronomic efficiency, partial factor productivity (PFP), and grain yield. Agronomic phosphorus use efficiency increased from 26.3 at the sole TSP to 163 at treatment 7, a staggering 520% increment when combined with Tithonia biomass. Similarly, PFP of phosphorus increased from 169.1 to 324.8. At the same time, 53% increment of the grain yield was recorded over the control. Although applying the highest Tithonia biomass alone gave the highest grain yield, application of just 50% of the highest rate of Tithonia biomass and TSP looks more appealing to smallholder maize producers in the region. The result therefore indicated that Tithonia biomass could be utilized in smallholder maize production system as a source of plant nutrients such as phosphorus; it also emphasized the need to allot more resources and attention in exploring locally available and cheap sources of plant nutrients which could augment crop productivity amid the mounting financial challenges faced by farmers in the region.

scholarly journals Determining the Optimum Level of Soil Olsen Phosphorus and Phosphorus Fertilizer Application for High Phosphorus-Use Efficiency in Zea mays L. in Black Soil

2021 ◽  
Vol 13 (11) ◽  
pp. 5983
Author(s):  
Khalid Ibrahim ◽  
Qiong Wang ◽  
Le Wang ◽  
Weiwei Zhang ◽  
Chang Peng ◽  
...  
Keyword(s):  
Crop Production ◽  
Maize Yield ◽  
Fertilizer Application ◽  
Black Soil ◽  
Application Rate ◽  
Optimum Level ◽  
Phosphorus Use Efficiency ◽  
Use Efficiency ◽  
P Application ◽  
Phosphorus Application

Phosphorus is an essential macronutrient, both as a component of several important plant structural compounds and as a catalyst in the conversion of numerous important biochemical reactions in plants. The soil Olsen P (OP) level is an important factor affecting crop production and P-use efficiency (PUE). We tested the effect of six OP levels and P doses on maize yield, where the P doses were 0, 22, 44, 59, 73, and 117 kg P2O5 ha−1, with three replications, from 2017 to 2019. The response of crop yield to the OP level can be divided into two parts, below 28 mg kg−1 and above 28 mg kg−1. The change point between the two parts was determined as the agronomic critical level for maize crops in the study area. The PUE (%) increased with soil OP levels and decreased with P fertilizer application rates. In addition, results for the low P application rate (P2), 22 kg P2O5 ha−1, showed that PUE significantly increased with an increase in the soil OP level compared with PUE at a low OP level (OP1), 0 kg P2O5 ha−1. The PUE value increased by 49.5%, 40.1%, and 32.4% at a high OP level (OP6) in 2017, 2018, and 2019, respectively, compared to that at a low OP level (OP1). At the same OP levels, in all three years, the PUE at a high P application rate (P6) decreased significantly, in the range of 62.8% to 78.7%, compared to that at a low P application rate (P2). Under an average deficit of 100 kg ha−1 P, the OP level of the soil in all three years decreased by 3.9 mg kg−1 in the treatment without P addition (P1) and increased by 2.4–3.5 mg kg−1 in the P treatments for each 100 kg ha−1 P surplus. A phosphorus application rate of 44 kg P2O5 ha−1 and an OP level of 28 mg kg−1 are sufficient to obtain an optimum yield, increase the PUE, and reduce environmental hazards in the study area in northeastern China.

Biochemical Composition and Phosphorus Use Efficiency in Some Mixtures

2016 ◽  
Vol 5 (07) ◽  
pp. 4694 ◽  
Author(s):  
Viliana Vasileva ◽  
Anna Ilieva
Keyword(s):  
Perennial Ryegrass ◽  
Biochemical Composition ◽  
Plant Biomass ◽  
Soluble Sugars ◽  
Subterranean Clover ◽  
Water Soluble ◽  
Birdsfoot Trefoil ◽  
Phosphorus Use Efficiency ◽  
Forage Crops ◽  
Use Efficiency

In pot trial the biochemical composition and phosphorus use efficiency of birdsfoot trefoil, sainfoin and subterranean clover grown pure and in mixtures with perennial ryegrass in the next ratios were studied in the Institute of Forage Crops, Pleven, Bulgaria: birdsfoot trefoil + perennial ryegrass (50:50%); sainfoin + perennial ryegrass (50:50%); subterranean clover + perennial ryegrass (50:50%); birdsfoot trefoil + subterranean clover + perennial ryegrass (33:33:33%); sainfoin + subterranean clover + perennial ryegrass (33:33:33%). The highest crude protein content was found in the aboveground mass of birdsfoot trefoil (19.17%) and sainfoin (19.30%). The water soluble sugars contents in mixtures was found higher compared to the pure grown legumes. Birdsfoot trefoil showed the highest phosphorus use efficiency for plant biomass accumulation and nodules formation. In mixtures the phosphorus use efficiency was found be higher as compared to the same in pure grown legumes.

Molecular control and genetic improvement of phosphorus use efficiency in rice

2019 ◽  
Vol 39 (12) ◽  
Author(s):  
Qiuju He ◽  
Fei Wang ◽  
Yan Wang ◽  
Hong Lu ◽  
Zhili Yang ◽  
...  
Keyword(s):  
Genetic Improvement ◽  
Phosphorus Use Efficiency ◽  
Molecular Control ◽  
Use Efficiency
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