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Vanlauwe, Bernard; Diels, Jan; Lyasse, Omar; Aihou, K.; Iwuafor, E. N. O.; Sanginga, N.; Merckx, Roel; Deckers, Jozef

doi:10.1023/a:1015531123854

Cited by 33 publications

(8 citation statements)

References 19 publications

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“…These results are in agreement with earlier studies that demonstrated that the use of organics could enhance efficiency of chemical fertilizers [29]. Vanlauwe et al [17] reported that the combination of organic and inorganic nutrient sources results into synergy and improved conservation and synchronization of nutrient release and crop demand, leading to increased fertilizer use efficiency and higher yields.…”

Section: Maize Grain Yieldssupporting

confidence: 92%

“…There is therefore an urgent need to develop and promote alternative appropriate technologies that will replenish soil nutrients to enable farms to be more productive as to meet the ever increasing food demand. One such approach is the use of organic resources in combination with mineral fertilizers which encompasses integrated soil fertility management [17]. This study hypothesized that soil Striga incidence was associated with soil nitrogen availability, and that maize productivity was linked to Striga incidence, soil N availability and their management.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Integrated Use of Calliandra calothyrsus and Maize Stover with Urea on Soil Mineral Nitrogen, Striga Infestation and Maize Yields in Western Kenya

Nyambati

Odhiamboz

Serrem

et al. 2020

JEAI

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This study investigated the effects of applying different combinations of two contrasting plant residues, Calliandra calothyrsus (Calliandra) and maize stover, with urea on Striga infestation and maize yield in western Kenya. A randomized complete block design (RCBD) with 12 treatments replicated four times was used. The following plant residue: urea combinations was used so as to supply a total of 75 kg ha-1 in each treatment combination; 75:0, 60:15, 45:30, 30:45, 15:60, and 0:75 for five seasons (2007-2009). A control treatment where no nutrient inputs were applied was included. Calliandra applied at 45 kg N ha-1 plus urea (30 kg N ha-1) and maize stover applied 15 kg N ha-1 plus urea (60 kg N ha-1) had consistently lower Striga infestation compared other treatments. Negative linear relationship between maize yield and Striga population were observed in the first three seasons i.e. 2007 LR, 2007 SR and 2008 LR. Overall mean maize grain yields over the five seasons were highest (3.0 t ha-1) under maize stover (30 kg N ha-1) combined with urea (45 kg N ha-1) followed by Calliandra (45 kg N ha-1) combined with urea (30 kg N ha-1) with (2.7 t ha-1). Maize stover (30 kg N ha-1) in combination with urea (45 kg N ha-1) increased maize grain yields relative to the control by 275%, 107% and 155% in the first, second and third seasons respectively. Treatments with Calliandra (45 kg N ha-1) in combination with urea (30 kg N ha-1) increased maize grain yields relative to the control by 191%, and 233% in the first and third seasons respectively. The control and sole maize stover (75 kg N ha-1) had the lowest yields across all the seasons. The optimum application rate for stover was 30 kg N ha-1 nitrogen equivalent while that for Calliandra was 45 kg N ha-1.

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Section: Maize Grain Yieldssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effects of Integrated Use of Calliandra calothyrsus and Maize Stover with Urea on Soil Mineral Nitrogen, Striga Infestation and Maize Yields in Western Kenya

Nyambati

Odhiamboz

Serrem

et al. 2020

JEAI

View full text Add to dashboard Cite

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“… Olmo et al (2014) found that grain production was correlated significantly and positively with soil moisture, EC, total N, Olsen P and available K, Cu and Zn, and negatively with soil compaction, consistent with the favorable changes in soil physico-chemical properties brought about by biochar additions. According to Vanlauwe et al (2002) and Lentz et al (2014) , combining biochar with green manure more effectively utilized the two soil amendments, as it eliminates potential plant growth reductions caused by N immobilization after biochar additions and maximized green manure net N mineralization potential.…”

Section: Discussionmentioning

confidence: 99%

Emissions intensity and carbon stocks of a tropical Ultisol after amendment with Tithonia green manure, urea and biochar

Fungo

Lehmann

Kalbitz

et al. 2017

Field Crops Research

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“…In most cases, both organic and mineral fertilizer resources are preferentially allocated to the part of the farm used for growing the main food-security crop, often close to the homestead, while plots further away are neglected. Such management decisions culminate in the creation of gradients of decreasing soil fertility with distance from the homestead (Elias et al 1998;Vanlauwe et al 2002). Even where small quantities of manure and mineral fertilizers are available, farmers still apply them at high rates by concentrating them in small areas.…”

Section: Potassium Balance At the Farm Scalementioning

confidence: 99%

Assessing Potassium Mass Balances in Different Countries and Scales

Majumdar

Norton

Murrell

et al. 2020

Improving Potassium Recommendations for Agricultural Crops

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Estimating nutrient mass balances using information on nutrient additions and removals generates useful, practical information on the nutrient status of a soil or area. A negative input–output balance of nutrients in the soil results when the crop nutrient removal and nutrient losses to other sinks become higher than the nutrient inputs into the system. Potassium (K) input–output balance varies among regions that have different climates, soil types, cropping systems, and cropping intensity. This chapter illustrates the farm-gate K balances in major production areas of the world and their impacts on native K fertility and crop yields. On-farm and on-station research examples show significant negative K balances in South Asia and Sub-Saharan Africa, while China, the USA, Brazil, and countries of the Latin America Southern Cone highlighted continued requirement of location-specific K application to maintain crop yields and soil K fertility status at optimum levels.

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Cited by 33 publications

References 19 publications

Effects of Integrated Use of Calliandra calothyrsus and Maize Stover with Urea on Soil Mineral Nitrogen, Striga Infestation and Maize Yields in Western Kenya

Effects of Integrated Use of Calliandra calothyrsus and Maize Stover with Urea on Soil Mineral Nitrogen, Striga Infestation and Maize Yields in Western Kenya

Emissions intensity and carbon stocks of a tropical Ultisol after amendment with Tithonia green manure, urea and biochar

Assessing Potassium Mass Balances in Different Countries and Scales

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