Genetic dissection of root morphological traits as related to potassium use efficiency in rapeseed under two contrasting potassium levels by hydroponics

2019 ◽  
Vol 62 (6) ◽  
pp. 746-757 ◽  
Author(s):  
Xiaoling Dun ◽  
Jiaqin Shi ◽  
Huiping Liu ◽  
Jie Wang ◽  
Xinfa Wang ◽  
...  
Keyword(s):  
Morphological Traits ◽  
Genetic Dissection ◽  
Potassium Use Efficiency ◽  
Use Efficiency

scholarly journals Yield, nutrient uptake and potassium use efficiency in rice fertilized with crushed rocks

2014 ◽  
Vol 9 (4) ◽  
pp. 455-464 ◽  
Author(s):  
Ramos Guelfi Silva Douglas ◽  
Roberto Spehar Carlos ◽  
Marchi Giuliano ◽  
de Arajo Soares Danilo ◽  
Lopes Cancellier Eduardo ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Potassium Use Efficiency ◽  
Use Efficiency

scholarly journals Potassium fertilizer applied by different methods in the zucchini crop

2016 ◽  
Vol 20 (7) ◽  
pp. 643-648
Author(s):  
Carlos N. V. Fernandes ◽  
Benito M. de Azevedo ◽  
Débora C. Camargo ◽  
Chrislene N. Dias ◽  
Mario de O. Rebouças Neto ◽  
...  
Keyword(s):  
Cucurbita Pepo ◽  
Net Present Value ◽  
Statistical Design ◽  
Soluble Solids ◽  
Internal Rate Of Return ◽  
Potassium Fertilizer ◽  
Maximum Value ◽  
Potassium Use Efficiency ◽  
Use Efficiency ◽  
Fruit Mass

ABSTRACT Aiming to evaluate the effect of potassium (K) doses applied by the conventional method and fertigation in zucchini (Cucurbita pepo L.), a field experiment was conducted in Fortaleza, CE, Brazil. The statistical design was a randomized block, with four replicates, in a 4 x 2 factorial scheme, which corresponded to four doses of K (0, 75, 150 and 300 kg K2O ha-1) and two fertilization methods (conventional and fertigation). The analyzed variables were: fruit mass (FM), number of fruits (NF), fruit length (FL), fruit diameter (FD), pulp thickness (PT), soluble solids (SS), yield (Y), water use efficiency (WUE) and potassium use efficiency (KUE), besides an economic analysis using the net present value (NPV), internal rate of return (IRR) and payback period (PP). K doses influenced FM, FD, PT and Y, which increased linearly, with the highest value estimated at 36,828 kg ha-1 for the highest K dose (300 kg K2O ha-1). This dose was also responsible for the largest WUE, 92 kg ha-1 mm-1. KUE showed quadratic behavior and the dose of 174 kg K2O ha-1 led to its maximum value (87.41 kg ha-1 (kg K2O ha-1)-1). All treatments were economically viable, and the most profitable months were May, April, December and November.

Differences in Growth and Potassium-Use Efficiency of Two Cotton Genotypes

2011 ◽  
Vol 42 (2) ◽  
pp. 132-143 ◽  
Author(s):  
Ying Xia ◽  
Cuncang Jiang ◽  
Fang Chen ◽  
Jianwei Lu ◽  
Yunhua Wang
Keyword(s):  
Cotton Genotypes ◽  
Potassium Use Efficiency ◽  
Use Efficiency

scholarly journals Screening of Sunflower Genotypes for Potassium Use Efficiency in Irrigated Soil Condition

2018 ◽  
Vol 3 ◽  
pp. 30-39
Author(s):  
Sobia Baby Jamro ◽  
Naheed Akhtar Talpur ◽  
Mukesh Kumar Sootahar ◽  
Zial Ul Hassan Shah ◽  
Mahendar Kumar Sootahar ◽  
...  
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Soil Condition ◽  
Head Diameter ◽  
Shoot Dry Weight ◽  
K Fertilizer ◽  
Potassium Use Efficiency ◽  
Use Efficiency ◽  
Seed Yields ◽  
And Control

A field experiment was conducted during summer 2016 to screen out sunflower (Helianthus annuusL.) genotypes for their potassium (K) use efficiency ratio. Eight sunflower genotypes were tested; Samsung 20, Mehran 2, Ho-1, Melabour, Samsung 30, Valugur, Chinika and Sputnik in randomised complete block design (RCBD) with the two treatments comprised of potassium at (50 and 0 kg K ha-1) along with source (SOP) recommended dose fertilizer respectively. The results revealed that the treated and control plots (50 and 0 kg K ha-1) produced different values for of seeds (1763.1 and 1588.5 head-1), shoot dry weight (23.0 and 19.11 g), head diameter (17.45 and 15.72 cm), seed yields (2065.8 and 1918.7 kg ha-1), seed K % (0.60 and 0.30%) and diagnostic tissue % (3.54 and 2.65%) respectively. The considerable increase was found in seeds head-1(10.99%), shoot dry weight (20.35%), head diameter (11.01%), seed yields (11.31%) seed K % (100%), and leaf K % (33.58%). Among genotypes, Ho-1 was highly efficient to utilize added K fertilizer more seed (2039.7 head-1), shoot dry weight (25.86 g), plant height (188.66 cm), head diameter (20.20 cm), seed yields (2409.5 kg hat-1). Moreover seed K % and leaf K % was also high in variety Ho_1 (0.65% and (5.05%) respectively. Among all the sunflower tested genotypes Ho-1 showed significant response applied K but the variety Ho-1 and genotype Chinika were more efficient in utilization of K.

scholarly journals Morpho-physiological and Yield Responses of Sweet Potato (Ipomoea batatas (L.) Lam.) Genotypes to Frequency of Irrigation under Greenhouse Condition

2019 ◽  
pp. 1-17
Author(s):  
Amsalu Gobena Roro ◽  
Mihret Tesfaye
Keyword(s):  
Water Use Efficiency ◽  
Sweet Potato ◽  
Water Use ◽  
Morphological Traits ◽  
Ipomoea Batatas ◽  
Irrigation Frequency ◽  
Branch Number ◽  
Stomata Density ◽  
Irrigation Interval ◽  
Use Efficiency

Introduction: The sweet potato (Ipomoea batatas Lam.), is one of the root and tuber crops grown from low land to high land region of Ethiopia. However, its productivity depends on adaptability and tolerance to different environmental stresses and the capacity of the crop to enhance water use efficiency under moisture stress conditions. The objective of this study was to evaluate impact of irrigation interval on morpho-physiological characteristics of sweet potato varieties. Methodology: The trial was a 3 x 2 factorial arrangement in CRD design consisting: three irrigation intervals (daily-control), four days and seven days interval) combined with two sweet potato genotypes (Hawassa-83 and Kulfo) with three replications. Results: The morpho-physiological indicators, morphological traits, water use efficiency (WUE), Relative leaf water content (RLWC), leaf gas exchange, stomata density, and tuber yield were evaluated. The result indicated that morphological traits were significantly (P≤0.05) responded to genotype and irrigation frequencies. As compared to daily irrigation, an extended watering interval to seven days irrigation interval significantly reduced leaf number, vine length, branch number and internode length by 55.42, 19.83 cm, 2.17 and 0.35 cm, respectively. Stomata density was strongly responded to genotypes than effect of irrigation frequency. Genotype Hawassa-83 had approximately 2.0 more stomata per mm2 than genotype Kulfo regardless to irrigation frequency. The interaction effect between genotype and irrigation frequency revealed significant influence on photosynthesis and transpiration rate. The rate of assimilate accumulation was significantly reduced (by 9.97

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