Phosphorus Use Efficiency of Soybean as Affected by Phosphorus Application and Inoculation

2001 ◽  
Vol 1 (1) ◽  
pp. 49-50 ◽  
Author(s):  
Khair Mohammad Kakar ◽  
Muhammad Tariq . ◽  
Fazal Hayat Taj . ◽  
Khalid Nawab .
2019 ◽  
pp. 1-8
Author(s):  
Prosper I. Massawe ◽  
Jerome Mrema

A study was conducted to determine the effects of nitrogen (N) and phosphorus (P) concentrations and P use efficiency from Minjingu phosphate rock (MPR), Minjingu mazao and Triple Super Phosphate (TSP) fertilizers under irrigated rice (Oryza sativa L.) production in Lekitatu village, Meru district, Arusha region, Tanzania. The initial soil pH in the two experimental sites was slightly alkaline while total N and available P was low and medium respectively. Randomized Complete Block Design (RCBD) with three replications was adopted and phosphorus was applied at the rates of 0, 20, 40 and 60 kg P ha-1 as MPR, Minjingu mazao and TSP. Nitrogen was applied uniformly at a rate of 60 kg N ha-1 as urea taking into account the 10% N contained in the Minjingu mazao fertilizer. Phosphorus application increased N and P contents in the rice plants and phosphorus use efficiency (PUE) with the increase of P levels from 0 to 60 kg P ha-1 for all P sources. The site 1 had more PUE than site 2 due to higher moisture content. These effects were due to increased availability and nutrients uptake by plants, particularly P. Based on the results, it is recommended that; Minjingu mazao at the rates of 40 to 60 kg P ha-1, MPR and TSP at a rate of 60 kg P ha-1, respectively have to be adopted for sustainable soil P use in rice production areas of Lekitatu village.


Author(s):  
Everest Lepcha ◽  
Shyamal Kheroar ◽  
Debjani Halder ◽  
Swapan Kumar Barman ◽  
Kausik Mandal ◽  
...  

Background: Phosphorus is the crucial element to enhance yields as well bio-chemical properties namely protein and oil content in groundnut. Buildup of insoluble phosphates and chemical fixation in soil reduces phosphorus consumption ability in plants. Phosphorus use efficiency (PUE) can be increased with higher levels of phosphorus rate. The study was framed to investigate the effect of phosphorus fertilization on yield, nutrient acquisition, use efficiency and bio-chemical compositions of groundnut. Methods: The experiment was conducted in summer seasons of 2016 and 2017, using split plot design with three varieties (‘JL-24’, ‘Gangapuri’, ‘TAG-24’) in main plot and four fertilization levels (0, 40, 60, 80kg P2O5 ha-1) in sub plots. Result: The study revealed that pod yield enhanced significantly by 15.4%, 27.3% and 39.9% with increase in fertilization rates from 40kg to 80kg ha-1 compare to unfertilized plots. Protein and oil content showed a positive response with phosphorus application. Agronomic efficiency, recovery efficiency and utilization efficiency were also increased with phosphorus rates, whereas, partial factor productivity, agro-physiological efficiency and physiological efficiency had decreasing trends. ‘Gangapuri’ gave higher pod yield (1.80t ha-1), protein (24.27%) and oil (45.41%) content than other selected varieties. Enhanced phosphorus rate also increases nutrient uptake in groundnut.


2017 ◽  
Vol 4 (2) ◽  
pp. 55-68 ◽  
Author(s):  
Md Maniruzzaman ◽  
Tanzin Chowdhury ◽  
Md Arifur Rahman ◽  
Md Akhter Hossain Chowdhury

Knowledge of phosphorus (P) uptake and its use efficiency by crop plants is essential for adequate management of the plant nutrients to sustain food production with a minimal environmental impact. To study the effects of P on the growth, leaf biomass production, P content and uptake and to estimate P use efficiency (PUE), minimum P requirement and critical leaf P content of stevia, a pot experiment was conducted in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University following completely randomized design (CRD) with three replications in acid and non-calcareous soils of Bangladesh. The applied treatments was six viz. 0 (P0), 25 (P25), 50 (P50), 75 (P75), 100 (P100) and 150 (P150) kg P ha-1. Plant samples were collected at 15 days interval to obtain different parameters. Collective results indicated that significantly highest values of different parameters were obtained with P @ 100 kg ha-1 and the lowest from P control. Phosphorus application increased leaf dry yield at harvest by 55 to 510% in acid soil and 70 to 488% in non-calcareous soil over control. The rapid growth of the plant was recorded at the later stages (30 to 60 days after planting). Phosphorus content and uptake was directly proportional with the increased levels of P except the treatment P150 in both soils. Maximum PUE and fertilizer P use efficiency (FPUE) was observed at P100 treatment. Critical P content was estimated to be ca 0.19 and 0.30% in the leaves of stevia plants grown in acid and non-calcareous soils, respectively. For maximum leaf biomass production of stevia grown in acid and non-calcareous soils, the minimum requirement of P was also estimated to be ca 109 and 104 kg ha-1, respectively. The information of this finding would contribute to optimize the soil P use and improve fertilizer management for stevia cultivation.Res. Agric., Livest. Fish.4(2): 55-68, August 2017


2020 ◽  
Vol 97 (3) ◽  
pp. 318-324
Author(s):  
Shixin Cui ◽  
Yonglin Qin ◽  
Jing Yu ◽  
Xiaohua Shi ◽  
Liguo Jia ◽  
...  

2021 ◽  
Vol 13 (11) ◽  
pp. 5983
Author(s):  
Khalid Ibrahim ◽  
Qiong Wang ◽  
Le Wang ◽  
Weiwei Zhang ◽  
Chang Peng ◽  
...  

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.


2012 ◽  
Vol 11 (7) ◽  
pp. 1103-1110 ◽  
Author(s):  
Xin-kai ZHU ◽  
Chun-yan LI ◽  
Zong-qing JIANG ◽  
Lian-lian HUANG ◽  
Chao-nian FENG ◽  
...  

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