Exchange equilibria of potassium in soils. II. Effect of farmyard manure on K‐Mg exchange

Poonia, S. R.; Mehta, S. L.; Pal, Raj

doi:10.1002/jpln.19861490208

Cited by 12 publications

(10 citation statements)

References 10 publications

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“…The small Kv values are in accordance with the results reported for soils containing large amounts of organic matter and noncrystalline aluminum silicates (Goulding 1983). The relatively large Kv values at small EK values may also be attributed to the presence of organic matter and noncrystalline aluminum silicate because soil organic matter, in some soils, contributed positively to the K selectivity (Poonia et al 1986;Poonia and Niederbudde 1990) and because some noncrystalline aluminum silicates having high silica contents exhibited a high K-selectivity (Perrott 1981). Since In Kv decreased quite linearly as EK increased in the relatively small EK range of 0 to 0.1, we used the following equation:…”

Section: Resultssupporting

confidence: 90%

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Wada

Odahara

1993

Soil Science and Plant Nutrition

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Section: Resultssupporting

confidence: 90%

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Wada

Odahara

1993

Soil Science and Plant Nutrition

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“…In contrast, the plots under NK + PM and NPK + RS treatments showed the great accumulation of exchangeable K in surface layers, possibly because of the increase in the sorption of K following continuous addition pig manure and rice straw, increase in the proportion of K specific internal exchange sites to K nonspecific external exchange sites, and increase in soil surface charge density (Poonia et al, 1986;Subba et al, 1993;Shi et al, 1994). The application of pig manure and rice straw increased the cation exchange capacity (CEC) of the soil (Liao et al, 2009b), which might have resulted in increased exchangeable K utilization by rice crops .…”

Section: Discussionmentioning

confidence: 88%

Long-term effect of fertilizer application on rice yield, potassium uptake in plants, and potassium balance in double rice cropping system

Liao

Zheng

et al. 2010

Front. Agric. China

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A 27 years field experiment was conducted on a Fe-Accumli Stagnic Anthrosol to evaluate the effects of long-term application of fertilizer, pig manure (PM), and rice straw (RS) on rice yield, uptake, and usage efficiency of potassium, soil K pools, and the nonexchangeable K release under the double rice cropping system in South Central China. Common cropping pattern in the study was early rice-late rice-fallow (winter). The field treatments included CK (no fertilizer applied), NP, NK, NPK, and NK + PM, NP + RS, NPK + RS. The pig manure and rice straw was applied in both the early rice and late rice cropping season. The ranking order of 27 years average annual grain yield were the CK < NK < NP < NK + PM < NP + RS < NPK < NPK + RS treatments. The negative yield change trends were observed in the CK and NP and NK treatments of unbalanced nutrient application in the case of omitted-K and P-omitted. The positive yield change trends were observed in balanced applications of NPK and combined application of fertilizer (NPK) with pig manure (NK + PM) or rice straw (NP + RS and NPK + RS). The application of K fertilizer (NPK) increased grain yield by 56.7 kg$hm -2 $a -1 over that obtained with no K application (NP). The combined application of pig manure with fertilizer (NK + PM) increased by 82.2 kg$hm -2 per year compared with fertilizer application alone (NK). The combined application of rice straw with fertilizer (NP + RS and NPK + RS) increased on the average of 34.4 kg$hm -2 per year compared with fertilizer application alone (NP and NPK). In all fertilizer, pig manure and rice straw combinations, K uptake change trends in rice plants of the early rice was positive except for CK and NP treatments. The results showed that the total removal of K by the rice plants exceeded the amounts of total K applied to the soil in all treatments, which showed a negative K balance. This ranged from 106.3 kg$hm -2 $a -1 in CK treatment to 289.6 kg$hm -2 $a -1 in the NPK + RS treatment. Continuous annual application of 199.2 K kg$hm -2 to rice resulted in an accumulation (58 kg$hm -2 ) of exchangeable K (1 mol NH 4 OAc extractable K) in 0-45 cm soil depth over the study period, despite the higher average annual uptake of K by the system (225.7 kg$hm -2 ). However, nonexchangeable K increased substantially from 1090 kg$hm -2 to 1113 kg$hm -2 and 1140 kg$hm -2 in the 0-45 cm soil layer in NPK + RS and NPK treatments after 27 years of the continuous double rice cropping system, respectively. Thus, long-term rational application of K fertilizer may increase sustainable K fertility of the continuous double rice cropped system.

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“…In contrast, the plots under NPK + FYM treatment showed the maximum accumulation of exchangeable K in surface layers, possibly because of the increased sorption of K following continuous addition of FYM, an increase in the proportion of K specific internal to K nonspecific external exchange sites, and overall increase in soil surface charge density (Poonia et al, 1986;Mehta et al, 1988;Subba Rao et al, 1993). FYM increased the cation exchange capacity (CEC) of the soil (Bhattacharyya et al, unpublished data), which might have resulted in increased exchangeable K utilization by crops (Blake et al, 1999).…”

Section: Transformations Of Soil Kmentioning

confidence: 88%

Potassium balance as influenced by farmyard manure application under continuous soybean–wheat cropping system in a Typic Haplaquept

et al. 2006

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The effect of 30 years of continuous cropping, fertilization and manuring on the potassium (K) balances, the soil K pools and the nonexchangeable K release in a Typic Haplaquept soil from Almora, India under a rainfed soybean-wheat cropping system were investigated. The apparent K balance was measured as the difference between the total K added and that removed by the crops. The results showed that the total removal of K by the crops exceeded the amount of total K applied to the soil in all the treatments showing a net negative K balance. This ranged from 3.7 in the plots under NK to 81.7 kg ha − 1 year − 1 in the N + FYM treated plots. Continuous annual application of recommended doses of NPK + 10 t FYM (NPK + FYM) to soybean resulted in an accumulation (+56 kg K ha − 1 ) of exchangeable K (1 N NH 4 OAc extractable K) in the 0-45 cm soil depth over the study period, despite the highest average annual uptake of K by the system (150.8 kg ha − 1 year −1 ). However, there was a net depletion of exchangeable K (−80 kg K ha − 1 ) in that soil depth under the NPK treated plots. The results also revealed that the content of non-exchangeable K decreased substantially from 3482 kg ha − 1 to 2677 and 2896 kg ha − 1 in the 0-45 cm soil layer after 30 years of cropping in the plots under NPK + FYM and NPK treatments, respectively.There was a significant decline in total soil K with the removal of non-exchangeable soil K in the surface (0-15 cm) soil layer (R 2 = 0.526, P b 0.001, n = 36). Thus, long-term application of non-revised recommended fertilizer rates may threaten sustainability of the rainfed continuous soybean-wheat system.

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Exchange equilibria of potassium in soils. II. Effect of farmyard manure on K‐Mg exchange

Cited by 12 publications

References 10 publications

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Long-term effect of fertilizer application on rice yield, potassium uptake in plants, and potassium balance in double rice cropping system

Potassium balance as influenced by farmyard manure application under continuous soybean–wheat cropping system in a Typic Haplaquept

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