Effect of Potassium and Crop Residue Levels on Potassium Solubilizers and Crop Yield under Maize-Wheat Rotation

Raghavendra, M. P.; Singh, Y. P.; Gaind, Sunita; Meena, Mahesh Chand; Das, Tapas K.

doi:10.20546/ijcmas.2018.706.048

Cited by 8 publications

(8 citation statements)

References 15 publications

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“…The seed inoculation of liquid bio-fertilizer (KSB) for both maize and wheat crops had brought out significant improvement in biomass accumulation which might be due to the ability of microorganisms in the soil to solubilize unavailable forms of K-bearing minerals by production of protons, organic acids, siderophores, exopolysaccharides, and organic ligands so including KSB might have increased the availability and uptake of K by crops in addition to other macro, micronutrient, organic matter, organic carbon content, microbial growth and improved soil aggregate stability in soil has augmented growth of maize and wheat (Meena et al 2016). The similar result was also reported by Raghavendra et al (2017Raghavendra et al ( , 2018. There were no-significant interactive effects of residue and K-management found for biomass production in both the crops.…”

Section: Crop Growth Parametersupporting

confidence: 91%

“…The interaction between crop residue and K management was significant for only alkaline phosphatase activity in maize 2014 and 2015 at 30 DAS.The increase in all microbial parameters in 50% RDK+KSB might be due to the growth hormone production and release of organic acid by KSB inoculants with seed in soil. This result is also comparable with Basavesha (2013) and Raghavendra et al (2018). K-fertilizer, in addition to optimum supply of N and P nutrients directly improved the root growth and development and root exudates provided the required nutrients for microbes which inturn enhanced microbial growth and affected the composition of microbial communities.…”

Section: Soil Microbial Activitiessupporting

confidence: 81%

“…The significantly higher soil microbial activity such as alkaline phosphates, cellulase, dehydrogenase, FDA and microbial biomass carbon were observed with 6.0 t/ha CR over No CR and 2.0 t/ha CR (Table 2) in maize and wheat at 30 DAS during both the years. The markedly increased microbial activities under residue retained plots due to repeated application of organic residues and subsequent stimulation of microbial biomass, enhanced humus content, accumulation of organic matter, abundance of carbohydrates coupled with improved soil physical and chemical propertieshad a stronger impact on soil microbial activity (Vandana et al 2012).The similar findings were also reported by Raghavendra et al (2018). Among K management, 50% RDK+KSB showed significantly higher soil microbial activity at 30 DAS in maize and wheat during 2014-2016 and it was found non-significant with 100% RDK and 150% RDK.…”

Section: Soil Microbial Activitiessupporting

confidence: 58%

“…Potassium (K) is an essential plant macronutrient and plays an important role in many physiological processes, viz. water uptake, nutrient transport, growth and yield (Raghavendra et al 2018). It is well known that the agricultural lands all over the world suffer from severe soil K deficiencies, especially in Asia (He et al 2015).…”

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confidence: 99%

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Crop residue and potassium management strategies to improve water use and soil microbial activities under zero till maize (Zea mays)-wheat (Triticum aestivum) cropping system

Raghavendra

Singh²,

Meena³

et al. 2021

Indian J Agri Sci

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A field experiment was conducted with maize-wheat system during 2014-15 and 2015-16 at ICAR-IARI, New Delhi to study the soil microbial activities, crop growth, water use and its related parameters of maize and wheat as influenced by crop residue (CR) and potassium (K) management practices under zero till maize (Zea mays L.)-wheat (Triticum aestivum L.) system. The experiment was laid out in split-plot design with four CR levels (0, 2, 4 and 6 t/ ha) and five K levels (0, 50%, 100%, 150% RDK [recommended dose of K] and 50% RDK + potassium solubilizing bacteria, KSB). The results revealed that significantly higher biomass production, water use efficiency (WUE), irrigation water productivity (IWP) and total water productivity (TWP) of maize and wheat were found with 4.0-6.0 t/ha CR as compared to no CR and 2.0 t/ha CR.This was in consonance with improvement in soil microbial activities. Among K management, 50% RDK+KSB, 100% RDK and 150% RDK were found significantly superior over no K and 50% RDK for soil microbial activities, biomass production, WUE, IWP and TWP of maize and wheat. Thus, a combination of 4.0-6.0 t/ha CR retention and 50% RDK along with seed inoculation of KSB microbial strain could be pre-eminent options to improve crop growth, water use efficiency and soil microbial activities in zero till maize-wheat system.

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Section: Crop Growth Parametersupporting

confidence: 91%

Section: Soil Microbial Activitiessupporting

confidence: 81%

Section: Soil Microbial Activitiessupporting

confidence: 58%

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confidence: 99%

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Crop residue and potassium management strategies to improve water use and soil microbial activities under zero till maize (Zea mays)-wheat (Triticum aestivum) cropping system

Raghavendra

Singh²,

Meena³

et al. 2021

Indian J Agri Sci

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“…About 75% of K-uptake by cereals can be retained in CR, making them valuable nutrient sources (Raghavendra et al 2017). Farmers burn CR in open field at Indo-Gangetic Plains (IGP) of India, which leads to emission of harmful gases and air pollutants into atmosphere with loss of plant nutrients (Raghavendra et al 2018). To minimize this problem, recycling of nutrients through CR retention is one of the desirable options in IGP (Prasad 2005).…”

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confidence: 99%

System productivity and economics influenced by residue and potassium management in maize (Zea mays)-wheat (Triticum aestivum) rotation

et al. 2020

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A field experiment was conducted during kharif and rabi 2014-2016 at ICAR-IARI, New Delhi to study the system productivity, economics and energetics of maize (Zea mays L.) and wheat (Triticum aestivum L.) as influenced by crop residue (CR) and potassium (K) management under zero till maize-wheat system. The experiment was laid out in split plot design with four CR levels (0, 2, 4 and 6 t/ha) and five K levels (0, 50%, 100%, 150% RDK [recommended dose of K] and 50% RDK+Potassium solubilizing bacteria, KSB). Results revealed that significantly higher system productivity, output energy, specific energy and highest energy intensiveness, actual change in available K were found with 4.0-6.0 t/ha CR. Maximum B: C ratio in maize-wheat system was observed with No CR followed by 2.0-4.0 t/ha CR. Highest net energy returns, energy use-efficiency, energy productivity and lowest input energy (351- 395%) in both crops were registered with No CR fb 2.0-4.0 t/ha CR. Among K management, 50% RDK+KSB was significantly superior over rest levels. The maximum system net returns, B:C ratio, output energy, net energy returns, energy use-efficiency and energy productivity were found in 50% RDK+KSB and consumed only 0.34-0.35% higher input energy over no K in maize and wheat. Change in available K was more in 150% RDK fb 50% RDK+KSB and 100% RDK. Thus, a combination of 2.0-4.0 t/ha CR retention and 50% RDK along with seed inoculation with KSB improved system productivity, net returns and energetic parameters in zero tillage maize-wheat system, and brought positive change in available K and hence can be recommended for adaptation by the farmers.

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Potassium and Residue Management Options to Enhance Productivity and Soil Quality in Zero Till Maize–Wheat Rotation

Madar

Singh

Meena

et al. 2020

CLEAN Soil Air Water

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Crop residue burning and imbalanced use of chemical fertilizers in intensive cereal–cereal rotations are present ecological threats in any agro‐ecosystem of the world. Therefore, identification of best suitable agricultural practices can be a feasible option. The present experiment was initiated in 2013 and consisted of four residue levels (0, 2, 4, and 6 Mg ha−1) and five potassium (K) levels (0, 50, 100, 150% recommended dose of K and 50%RDK+K solubilizing bacteria, KSB). Crop residue (CR) and K management significantly improve crop and soil quality associated parameters. Among the treatments, maximum increase in crop growth, physiological parameters, grain yield, quality aspects, and water productivity are recorded with the application of 4–6 Mg ha−1 CR. Application of 50%RDK+KSB also significantly increases crop and soil related parameters. Soil quality indicators (bulk density, pH, electrical conductivity, and available micronutrients) do not vary significantly with CR and K management. Change in soil organic carbon status, soil enzymes, and potassium‐solubilizing bacterial count are significantly increased with 4–6 Mg ha−1 CR and application of 50%RDK+KSB, and this is in accordance with correlation study carried out. Therefore, it is concluded that CR retention (4–6 Mg ha−1) and reduction of inorganic K fertilizer by 50% and inoculation of KSB enhance the soil quality indicators and thereby improve crop growth, physiological parameters, grain yield, and quality aspects along with water productivity under zero till maize–wheat rotation.

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Effect of Potassium and Crop Residue Levels on Potassium Solubilizers and Crop Yield under Maize-Wheat Rotation

Cited by 8 publications

References 15 publications

Crop residue and potassium management strategies to improve water use and soil microbial activities under zero till maize (Zea mays)-wheat (Triticum aestivum) cropping system

Crop residue and potassium management strategies to improve water use and soil microbial activities under zero till maize (Zea mays)-wheat (Triticum aestivum) cropping system

System productivity and economics influenced by residue and potassium management in maize (Zea mays)-wheat (Triticum aestivum) rotation

Potassium and Residue Management Options to Enhance Productivity and Soil Quality in Zero Till Maize–Wheat Rotation

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