Soil Organic Carbon and Acid Phosphatase Enzyme Activity Response to Phosphate Rock and Organic Inputs in Acidic Soils of Central Highlands of Kenya in Maize

Ngetich, Felix K.; Kiboi, Milka N.; Mucheru-Muna, M.; Mugendi, Daniel N.

doi:10.9734/ijpss/2019/v30i230169

Cited by 7 publications

(3 citation statements)

References 51 publications

(53 reference statements)

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“…These results are in accord with Sekaran et al (2019) who also found that urease activity was higher where half rate of chemical N (56 kg/ha) was applied. Similarly, Balezentiene andKlimas (2009), andOmenda et al (2019) also established that urease activities increased in soils fertilized with either animal or green manures and decreased where chemical fertilizer was applied. Raju et al (2013) found that combination of chemical fertilizer with organic inputs resulted in 4 to 77% more urease activity in comparison to application of chemical fertilizer alone.…”

Section: Effect Of Soil Fertility Management Practices On the Activities Of Urease Enzymementioning

confidence: 82%

Influence of Soil Fertility Management on Nitrogen Mineralization, Urease Activity and Maize Yield

Kalala¹,

Shitumbanuma²,

Chishala³

et al. 2022

JAS

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For studying the effect of soil fertility management practices on N mineralization, urease activity and maize yield, replicated field trials were established in 2015 at Misamfu and Msekera agricultural research stations (ARS) representing two geo-climatic regions of Zambia. The soil at Msekera ARS is a sandy clay loam (SCL) from a Paleustult, while that at Misamfu is a loamy sand (LS) from a Kandiustult. The field trials had three categories of treatments namely legumes, traditional and conventional. The legumes group consisted of researcher-recommended legume-cereal intercrop systems of maize with Cajanus cajan, Crotalaria juncea and Tephrosia vogelii in combination with compound D (10% N, 20% P2O5, 10% K2O) and urea (46% N) at the recommended rate (200 kg ha-1) and half of the recommended rate (100 kg ha-1). Composted cattle manure and Fundikila, a special plant biomass management technique, were the inputs under the traditional category. The conventional category consisted of a treatment to which only chemical fertilizer was applied. Urease activity was determined in surface soil samples (0-20 cm) collected from the field trials after 3 years. For N mineralization, a laboratory incubation study was conducted over 13 weeks. For the laboratory incubation, an additional treatment to which no input was applied was included as control. Application of organic inputs significantly increased the potentially mineralizable N (No) by 127% to 256% on the LS and by 51% to 131% on the SCL in comparison to the control. Similarly, the cumulative N mineralized (Ncum) was twice or thrice higher where organic inputs had been applied in comparison to the control. The No followed the order traditional > legumes > conventional > control, while the mineralization rate constant (k) followed the order legumes > conventional > traditional > control on both soils. The rate of N mineralization was significantly higher on the LS than the SCL. Higher rates of chemical fertilizer resulted in high Ncum and higher maize yield. Maize yield was significantly and positively correlated to Ncum, but inversely correlated to the amount of applied N that was mineralized (%Nmin). Urease activity was stimulated by application of organic inputs and suppressed by higher rates of chemical fertilizers. The type of organic inputs; the rate of chemical fertilizers; and soil texture are factors influencing N mineralization and maize yield. Urease activity was largely influenced by the rate of chemical fertilizer, but not the type of organic inputs or soil texture.

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Section: Effect Of Soil Fertility Management Practices On the Activities Of Urease Enzymementioning

confidence: 82%

Influence of Soil Fertility Management on Nitrogen Mineralization, Urease Activity and Maize Yield

Kalala¹,

Shitumbanuma²,

Chishala³

et al. 2022

JAS

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“…The use of mineral fertilizers plays a vital role in soil fertility restoration, and better essential nutrients (Zhou et al, 2022). Additionally, organic resources play a crucial role in soil fertility management over inorganic fertilizer in sustainability terms (Omenda et al, 2019). They can improve soil nutrients, physical properties, and water holding capacity contributing to organic matter formation and maintenance (Lazcano et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…They can improve soil nutrients, physical properties, and water holding capacity contributing to organic matter formation and maintenance (Lazcano et al, 2013). The combined use of manure and mineral fertilizer has also been suggested as one of the effective ways of improving soil fertility in farming systems (Omenda et al, 2019). However, the fertilization recommendations found in the Central African Republic and elsewhere in SSA are at best-educated guesses.…”

Section: Introductionmentioning

confidence: 99%

Fertilization options for improved cassava productivity and economic profitability in the Pissa and Damara areas, Central African Republic: Comparative Approach

Gougodo¹,

Kosh-Komba²,

Zaman³

et al. 2023

Afr. J. Agric. Res.

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This study aimed to identify fertilization options for improving cassava productivity and profitability in two contrasting regions of the Central African Republic. The Pissa (guinea forest) and Damara (savannah). The study adopted a randomized complete block design with four treatments replicated four times in a plot size of 7 m by 7 m. The treatments were; T1 (Control), T2 (Peasant practice), T3 (sole NPK), and T4 (Cow manure+NPK). We performed the analysis of variance (ANOVA) using R statistical software version 3.1.2. The yield attributes and growth parameters significantly varied (p=0.05) with application of NPK and NPK plus manure. The use of 3 t ha -1 of cow manure and 90N-30P-180 Kg ha -1 of mineral fertilizer gave the highest yield of 50 and 37 t ha -1 in Pissa and Damara respectively compared to their local controls (no input); This combination also resulted in high profitability with high value-tocost ratios (RVC = 2 in Pissa and 1.3 in Damara). The variability study (48.11%) showed a correlation between growth and production parameters; the effects of fertilizers were much more expressed in the plant's circumference and the number of leaves. The use of organo-mineral fertilizer can give good productivity and profitability. Thus, T4 is a technology that resource-poor households can easily use, although the purchasing power of the peasant farmers in the study area is low.

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Comparing farmers’ soil fertility knowledge systems and scientific assessment in Upper Eastern Kenya

et al. 2021

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Soil Organic Carbon and Acid Phosphatase Enzyme Activity Response to Phosphate Rock and Organic Inputs in Acidic Soils of Central Highlands of Kenya in Maize

Cited by 7 publications

References 51 publications

Influence of Soil Fertility Management on Nitrogen Mineralization, Urease Activity and Maize Yield

Influence of Soil Fertility Management on Nitrogen Mineralization, Urease Activity and Maize Yield

Fertilization options for improved cassava productivity and economic profitability in the Pissa and Damara areas, Central African Republic: Comparative Approach

Comparing farmers’ soil fertility knowledge systems and scientific assessment in Upper Eastern Kenya

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