Effect of source, time and method of nitrogen application on growth and yield components of potato in Kenya

Gathungu, Geofrey K.; Shibairo, Solomon I.; Githiri, S. M.; Mburu, Mary W. K.; Ojiambo, P. S.; Kidanemariam, H. M.

doi:10.4314/acsj.v8i4.27679

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…The source of N nutrient seems not to have a direct influence on tuber yield. According to Gathungu et al (2000), the use of urea, calcium of ammonium nitrate (CAN), and ammonium sulfate nitrate (ASN) as different sources of N did not show significant direct influence on tuber yields, and any differences observed could have been due to other factors. These factors may include differences in the number of tubers per plant, time of N application, and rates of N losses.…”

Section: Potato Tuber Response To Nitrogen and Potassium Fertilizer Amentioning

confidence: 99%

A review on yield response to nitrogen, potassium and manure applications in potato (Solanum tuberosum L.) production

Otieno

Mageto

2021

Arch. Agric. Environ. Sci.

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Potato productivity has stagnated and remained low due to, among other causes, increasing soil infertility and poor nutrient management strategies. To avert this situation, it is essential to have a better understanding of potato response to nitrogen and potassium nutrients. Like other crops, potatoes require an adequate and balanced supply of nutrients for better growth and tuber yields. To achieve that, it is essential to conduct an extensive soil analyses for the entire farm. However, this process is expensive for most resource-constrained farmers. Moreover, the current recommendations used in the region are generic and focuses more on nitrogen than potassium. Hence, there is a need to focus on readily and freely available information for enhanced decision making. The assumption that the soils in the region are fertile and can supply adequate potassium is no longer valid, and now necessitates more actions such as adopting integrated soil fertility and precise application of nutrients within the 4R principles. All these aspects are well covered in this article. We believe the information presented in this manuscript is valuable and give a better foundation for future research and recommendations in potato production.

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Section: Potato Tuber Response To Nitrogen and Potassium Fertilizer Amentioning

confidence: 99%

A review on yield response to nitrogen, potassium and manure applications in potato (Solanum tuberosum L.) production

Otieno

Mageto

2021

Arch. Agric. Environ. Sci.

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“…Potatoes have a shallow root system which is a main reason of low uptake efficiency of nitrogen, so proper management is necessary [4]. Nitrogen has a significant effect on chlorophyll concentration, photosynthetic rate, leaf expansion, total number of leaves, plant height, dry matter accumulation and higher yields of potato [5] [6] [7]. In case of nitrogen deficient soils, plant shoot growth is reduced and carbohydrates which are typically used for producing leaf are shifted towards tuber initiation, hence leaf growth is limited [8].…”

Section: Introductionmentioning

confidence: 99%

Study of Efficacy of Various Split Applications of Inorganic Nitrogen on Potato Crop

Ayyub¹,

Reman²,

Qadri³

et al. 2018

OALib

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Series of experiments have been conducted to find the optimized dose and efficacy of nitrogen to fulfill the requirements of plant at each level by making split doses. Being most important macro nutrient, afield trial was conducted to study the effect of without applying nitrogen (control) single nitrogen (N) application at planting time on yield and nitrogen uptake of potato in comparison to various split applications. Data were collected about plants vegetative growth, total yield and qualitative factors (TSS, nitrogen, phosphorus, potassium and protein percentage in tuber). Experimental design used was Randomized Complete Block Design (RCBD) having seven treatments with three replications. Data were analyzed by using standard statistical techniques. Overall, qualitative characters of tubers and yield enhanced with split nitrogen application as compared to all nitrogen applied once at planting time whereas, there was no significant difference between tuber nitrogen, potassium, phosphorus and protein contents.

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“…However, to develop appropriate interventions such as a research programme for addressing these constraints like poor soil fertility management, it is important to first understand farmer characteristics and prevailing soil fertility management practices. This is because soil fertility is one of the major factors that affect the yield and quality of the potato because the crop requires high amounts of nitrogen, phosphorus, potassium, magnesium and calcium (Adhikari and Sharma, 2004;Hossain et al, 2003;Gathungu et al, 2000). This is why a baseline survey of similar nature was conducted in Mzimba District, Malawi in 2010 in order to document key baseline information characterising potato production in the study area, with focus on soil fertility management practices.…”

Section: Introductionmentioning

confidence: 99%

Production practices of potato (Solanum tuberosum L.) by farmers in Mzimba District, Northern Malawi

Kateta¹,

Kabambe²,

Lowole³

et al. 2015

Afr. J. Agric. Res.

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Potato (Solanum tuberosum [L.]) is one of the food and cash crops in Malawi. Almost all potato farmers in the country are smallholders with low productivity. In order to develop appropriate interventions to improve productivity, it is important to first understand farmers' characteristics and prevailing production practices. This study was therefore carried out in October 2010 in Champhira Extension Planning Area (EPA) in Mzimba District, Malawi with main objective of documenting key baseline information characterising smallholder potato growers and their production practices in the area. The survey was conducted in five randomly selected villages in Kazingilila Section in the same EPA whereby a total of 50 households (10 household from each village) were interviewed using a pre-tested questionnaire. The questionnaire was designed to gather information on social and demographic characteristics of households, farm size, knowledge and experience with potato production, soil fertility management practices, perceived market for potatoes and challenges. In addition, interviews with government extension officers residing in the area were carried out as key informants for general information about the status of potato production in the study area. Results indicate that total land holding size is between 0.65 and 1.01 ha and farmers allocate on average 0.08 ha to potato production. Results also show that farmers were growing Rosita as the only recognised and released variety in Malawi. Also, 80% of respondents were recycling their own seed with very limited knowledge of proper seed selection. On soil fertility management practices, 98% of farmers were applying chemical fertilisers mainly as 23:21:0 + 4 S and CAN or Urea. Sixty eight percent of farmers were also applying manure as a source of organic fertilizer to their crop. However, the average yield was 6 tons/ha, compare national average of 11.9 t/ha in 2008. Farmers and extension staff mentioned pests and diseases, limited access to improved varieties and clean seed, low soil fertility and limited knowledge of crop management as main constraints that affect potato production in the area. Based on these results technical issues, areas of research interventions and recommendations for improving potato production in the area have been indicated.

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Effect of source, time and method of nitrogen application on growth and yield components of potato in Kenya

Cited by 4 publications

References 6 publications

A review on yield response to nitrogen, potassium and manure applications in potato (Solanum tuberosum L.) production

A review on yield response to nitrogen, potassium and manure applications in potato (Solanum tuberosum L.) production

Study of Efficacy of Various Split Applications of Inorganic Nitrogen on Potato Crop

Production practices of potato (Solanum tuberosum L.) by farmers in Mzimba District, Northern Malawi

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