Potassium release characteristics, potassium balance, and fingermillet (Eleusine coracana G.) yield sustainability in a 27- year long experiment on an Alfisol in the semi-arid tropical India

Srinivasarao, Ch.; Kundu, Sumanta; Ramachandrappa, B. K.; Reddy, S. Narender; Lal, Rattan; Venkateswarlu, B.; Sahrawat, K. L.; Naik, Ravindranath

doi:10.1007/s11104-013-1877-8

Cited by 35 publications

(10 citation statements)

References 24 publications

(25 reference statements)

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“…Sometimes, negative apparent K balance might correspond to an increase in NH 4 OAc-K, as observed in a longterm experiment (27 years) conducted on a K-deficient Alfisol from southern India under finger-millet mono-cropping (Srinivasarao et al 2014). Irrespective of treatments, which were control (no amendments), FYM, FYM + 50% NPK, FYM + 100% NPK and 100% NPK (no organic source), K removal by crop was more than that added through FYM or fertilizer or their combination.…”

Section: Inceptisolsmentioning

confidence: 92%

“…Despite, NH 4 OAc-K increased by ~ 18% and ~ 39% (over initial content of ~ 59 mg kg −1 ) under FYM + 50% NPK and FYM + 100% NPK, respectively after 27 years of cropping. Over that supplied through external inputs and the exchangeable K, non-exchangeable K pool met the crop K demand (Srinivasarao et al 2014). Li et al (2017a) reported a decline in NH 4 OAc-K after 25 years of wheat-maize cropping with heavy inputs of N and P fertilizers in an alluvial soil of China.…”

Section: Inceptisolsmentioning

confidence: 98%

“…Alfisols are mainly seen in southern and eastern India, supporting upland rice, wheat, groundnut, and finger-millet (Eleusine coracana) based systems ). Among the major crops grown in Alfisols of southern India, finger-millet is one of the high K demanding crops which can remove K as high as 50 kg ha −1 (in low rainfall areas) to 150 kg ha −1 (under optimum rainfall condition) during its life cycle (Srinivasarao et al 2014).…”

Section: Major Crops and Cropping Systems Of India And K Uptakementioning

confidence: 99%

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Ongoing soil potassium depletion under intensive cropping in India and probable mitigation strategies. A review

Das

Sahoo

Raza

et al. 2022

Agron. Sustain. Dev.

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Potassium (K) is essential for plant growth and vital for soil health. However, despite high crop demand, K fertilization continues to be ignored or severely inadequate in Indian agriculture. Over time, this could lead to severe depletion of soil K reserve, irreversibly alter K-bearing minerals, and adversely affect soil fertility and crop productivity. Hence, we should comprehensively assess the alarming situation of soil K mining in India and come up with appropriate solutions. Keeping the above in mind, here we review the soil K pools concerning plant availability, their contents in major soil orders of India, reasons and status of soil K mining under major crops and cropping systems in India, and the impact of long-term K mining on soil K pools and clay minerals. We also address various aspects of sustainable K management in agriculture and suggest future action courses focusing on India. Our main findings are: (i) farmers in India mainly apply nitrogen and phosphorus, but little or no K; consequently, (ii) net K balance continues to be negative for most crops and cropping systems across India (e.g., -3.29 million tonnes [Mt] in 2000-01, -7.2 Mt in 2015-16); (iii) long-term K mining primarily depletes the exchangeable and non-exchangeable K pools in soil, and alters clay minerals to various extents; and (iv) the existing K fertilizer recommendations need an upward revision. We further enlist indigenous non-conventional alternatives of K fertilizers to meet the agricultural K demand. This is the first comprehensive review to simultaneously address the ongoing soil K mining in India, its impact, and its potential mitigation strategies. The points raised here would help reduce soil K mining, plan research work, and make policy decisions on K fertilization and residue management with the ultimate goal to prevent soil health deterioration and ensure sustainable crop production.

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Section: Inceptisolsmentioning

confidence: 92%

Section: Inceptisolsmentioning

confidence: 98%

Section: Major Crops and Cropping Systems Of India And K Uptakementioning

confidence: 99%

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Ongoing soil potassium depletion under intensive cropping in India and probable mitigation strategies. A review

Das

Sahoo

Raza

et al. 2022

Agron. Sustain. Dev.

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“…Uji korelasi menunjukkan parameter yang signifikan berkorelasi positif dengan IKT adalah C-organik (r = 0,728; P-value = 0,007; n = 12), N-total (r = 0,642; P-value = 0,024; n = 12) dan K-tersedia (r = 0,874; P-value = 0,000; n = 12). Nitrogen dan Kalium merupakan unsur makro esensial, dibutuhkan tanaman dalam jumlah yang cukup besar, sehingga ketersediaannya sangat penting dan perlu diperhatikan (Qiu et al, 2014;Srinivasarao et al, 2014). C-organik berhubungan dengan kualitas sifat fisik, kimia dan biologi tanah.…”

Section: Hasil Dan Pembahasanunclassified

Status Kesuburan Tanah sebagai Dasar Strategi Pengelolaan Lahan Sawah di Kabupaten Bantul, Indonesia

Maro’ah

Sunarminto

Utami

2022

AgriHealth:J.Agr-food.Nutr.Pblchealth

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<em>Rice is the main food commodity in Indonesia. The main factor affecting rice productivity is soil fertility. This study aims to determine the soil fertility status of paddy fields in the Bantul Regency. The research was conducted by surveying soil characteristics supported by laboratory analysis. The survey area consists of 4 Land Map Units (LMU) which are made based on the type of soil, where for each LMU 3 soil sampling points are taken. Soil fertility status is represented by Soil Fertility Index (SFI). The results showed that the SFI in Bantul Regency was moderate (0.72). SFI in LMU-1 is moderate (0.70), LMU-2 is moderate (0.71), LMU-3 is high (0.83) and LMU-4 is moderate (0.64). Significant indicators that were positively correlated with SFI were organic C, total N and available K. The management of paddy fields is based on factors related to SFI. The recommended land management for increasing soil fertility is the addition of organic matter in the form of Azolla which can increase the total N and organic C of the soil as well as the application of manure. Proper management of paddy fields can maintain soil fertility and sustainable rice productivity.</em>

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“…Negative K balances subsequent to several crop cycles have been reported globally. Depletion of K stocks in soil resources has been reported due to suboptimal application rates of K fertilizers and manures in India (Srinivasarao et al, 2013(Srinivasarao et al, , 2014 and lack of fertilizer application in Africa (Hanao and Baanante, 1999). Changes in land use systems can also affect the status and form of K (Rezapour and Samadi, 2014).…”

Section: Introductionmentioning

confidence: 99%

Effects of land use changes on kinetics of potassium release in sweetpotato garden soils of the highlands, Papua New Guinea

Rao¹

2014

Preprint

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Abstract. The present study attempts to employ K release parameters to identify soil quality degradation due to changed land use pattern in sweetpotato (Ipomoea batatas (L.) Lam) gardens of Highlands of Papua New Guinea. Soils with widely differing exchangeable and non-exchangeable K contents were successively extracted 569 h in 0.01 M CaCl2 and K release data was fitted to four mathematical models: first order, power, parabolic diffusion and Elovich equations. Results showed two distinct parts in the K release curves and 58–80% of total K were released to solution phase within 76 h (first 5 extractions) with 20–42% K released in the later parts (after 76 h). Soils from older gardens which were subjected to intensive and prolonged land use showed significantly (P < 0.05) lower cumulative K release potential than the gardens which are recently brought to cultivation (new gardens). Among four equations, first order and power equations best described the K release pattern and the constant b, an index of K+ release rates, ranged from 0.005–0.008 mg kg−1h−1 in first order model, and was between 0.14 and 0.83 mg kg−1h−1 in power model for the soils. In the non-volcanic soils, model constant b values were significantly (P < 0.05) higher than the volcanic soils thus indicative of vulnerability of volcanic soils to K deficiency. The food garden soils need management interventions either through improved fallow management or through mineral fertilizers plus animal manures to sustain productivity.

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Potassium release characteristics, potassium balance, and fingermillet (Eleusine coracana G.) yield sustainability in a 27- year long experiment on an Alfisol in the semi-arid tropical India

Cited by 35 publications

References 24 publications

Ongoing soil potassium depletion under intensive cropping in India and probable mitigation strategies. A review

Ongoing soil potassium depletion under intensive cropping in India and probable mitigation strategies. A review

Status Kesuburan Tanah sebagai Dasar Strategi Pengelolaan Lahan Sawah di Kabupaten Bantul, Indonesia

Effects of land use changes on kinetics of potassium release in sweetpotato garden soils of the highlands, Papua New Guinea

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