Evaluation of Soil Potassium Test to Improve Fertilizer Recommendations for Corn

Rakkar, Manbir K.; Franzen, David W.; Chatterjee, Amitava

doi:10.4236/ojss.2015.55011

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…The current concentration of potassium in both land uses is good enough for soil fertility. [48] Observed a decrease in potassium concentration as the growing season progresses from summer to autumn. Soil texture controls the presence of nutrients in the soil, its water holding capacity also depends upon it [8].…”

Section: Influence Of Location and Land Use Change On Soilmentioning

confidence: 98%

Mapping of Soil Properties under Different Land Uses in Lesser Karakoram Range, Pakistan

Hussain¹,

Ali²,

Begum³

et al. 2021

Pol. J. Environ. Stud.

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The vulnerability to environmental changes requires appropriate management of mountainous soils to harmonize agriculture productivity and health of agro-ecosystem. Information on spatial analyses in land uses is important for site-specific nutrient management. The current study investigates and maps soil properties in two land use types (agriculture and orchard) through geostatistical analyses of selected parameters using Inverse Distance Weighting (IDW). Geo-referenced soil samples were collected at 0-15 cm depth. Overall, silty loam soils were observed with slightly alkaline pH, normal electrical conductivity and adequate organic carbon in both land use types. Macronutrient results indicated that nitrate-nitrogen was medium while phosphorus and potassium were higher in both land uses. The two-way ANOVA indicated that the EC (p<0.05), NO 3 -N, Av. P and Ex. K (p<0.001) differed significantly across the land use types. Whereas with respect to various study locations the EC and Av. P differed significantly (p<0.01), while pH, SOC, NO 3 -N, Ex. K and saturation did vary. Higher Soil quality index (SQI) in agriculture soil indicating better quality or health than the orchard. The findings provide useful insights for soil fertility management in mountainous agro-ecosystems.

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Section: Influence Of Location and Land Use Change On Soilmentioning

confidence: 98%

Mapping of Soil Properties under Different Land Uses in Lesser Karakoram Range, Pakistan

Hussain¹,

Ali²,

Begum³

et al. 2021

Pol. J. Environ. Stud.

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“…Hasil penelitian telah banyak membuktikan bahwa pemupukan secara signifikan dapat meningkatkan kandungan bahan organik tanah. Akan tetapi, pemberian pupuk harus dilakukan secara terkontrol agar tidak meningkatkan kemasaman tanah (Makinde et al, 2009;Liu et al, 2014;Rakkar et al, 2015). Studi lain juga membuktikan bahwa penambahan bahan organik tanah secara signifikan dapat meningkatkan kapasitas infiltrasi tanah sehingga berpotensi mengurangi erosi (Silva et al, 2011;Arevalo-Gardini et al, 2015;Brar et al, 2015).…”

Section: Hasil Dan Pembahasanunclassified

Kesesuaian lahan untuk pengembangan tanaman kayu putih dan implikasinya terhadap teknik silvikultur

Sadono

Soeprijadi

Wirabuana

2020

JPSL

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Cajuput is a plant that plays an important role for forest industry development. Its leaves contain essential oil and become one of the non-timber forest products. The productivity of cajuput leaves is affected by certain factors, one of them are the level of land suitability. This study investigated the land suitability for cajuput establishment and its inference on silviculture strategy. Study location was situated in Forest Resort Gubugrubuh, Gunungkidul District. Data collection was conducted in 3 site that converted as the priority site of cajuput plantation namely site 75, site 78, and site 80. We used 6 indicator of land attributes including altitude, slope, rainfall, temperature, soil acidity, and soil organic carbon. The assessment of land suitability was determined by qualitative approach using storie and root square method. The result showed the level of land suitability was classified into N1 (currently not suitable) referring to the storie method, meanwhile it was categorized into S3 (marginally suitable) according to the root square method. This study also discovered the distinctive land attributes which became the limiting factors of cajuput growth in each site. The best silviculture strategies for supporting cajuput development in each site were terrace construction, plant distance management, and fertilization.

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“…Cyclic changes (1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016) in soil exchangeable K are attributable to seasonal variations in soil moisture, plant K uptake, and reversion of exchangeable K to nonexchangeable forms (Rakkar, Franzen, & Chatterjee, 2015;Sparks, 1987). Compared to chisel plowing down to 15 cm, conventional tillage down to 20 cm favored deeper incorporation of fertilizer K and straw left on soil after harvest, contributing to greater accumulation of exchangeable K in the 15-to 30-cm layer and lesser accumulation in the 0to 15-cm layer as shown for Mehlich-3 extractable P after 10 yr of experimentation at the same location (Zheng et al, 2001).…”

Section: Dynamics Of Soil Exchangeable and Non-exchangeable Kmentioning

confidence: 99%

Potassium transformation in clay soil with contrasting K budgets in long‐term experiment

et al. 2020

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Canadian Shield clay soils are high in potassium (K) reserves. The differential contribution of soil K fractions to crop nutrition is an important issue for ley farming systems of Eastern Canada where nitrogen (N)-based manure application rate leads to K surplus and redistribution. Our objective was to assess the long-term change in K offtake, K budget, and K forms under a 3-yr-cycle ley farming system (barley [Hordeum vulgare]-mixed forage-mixed forage) initiated in 1989 and ended in 2016. The liquid dairy manure (LDM) supplied higher amounts of K than mineral fertilization (MIN) and led to larger K offtake across crop cycles. The cumulative K budgets averaged −579 kg K ha −1 cycle −1 for MIN and +69 kg K ha −1 cycle −1 for LDM. Despite cyclic variations, topsoil showed a surplus of exchangeable K (>100 kg K ha −1) at the end of experimentation under MIN and LDM compared to the initial state in 1989. Exchangeable and nonexchangeable K fractions increased between 2001 and 2016 in 0-to 30-cm depth even under K deficit (MIN), due to K release from slowly available forms and recycling from lower layers. There were no significant relationships between K budget and exchangeable K down to 90 cm. The approach relating soil exchangeable K and K budgets to support buildup and maintenance of soil fertility proved to be inappropriate in clay soils high in illite-like minerals. Potassium dynamics in clay soils under ley farming highlighted the importance of considering nonexchangeable and subsoil K in K fertilization recommendations.

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Evaluation of Soil Potassium Test to Improve Fertilizer Recommendations for Corn

Cited by 7 publications

References 12 publications

Mapping of Soil Properties under Different Land Uses in Lesser Karakoram Range, Pakistan

Mapping of Soil Properties under Different Land Uses in Lesser Karakoram Range, Pakistan

Kesesuaian lahan untuk pengembangan tanaman kayu putih dan implikasinya terhadap teknik silvikultur

Potassium transformation in clay soil with contrasting K budgets in long‐term experiment

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