Interactive effect of nitrogen and potassium on dry matter and nutrient partitioning in true potato seed mother plants

Kanzikwera, C. R.; Tenywa, J. S.; Osiru, D.S.O.; Adipala, E.; Bhagsari, A. S.

doi:10.4314/acsj.v9i1.27631

Cited by 9 publications

(5 citation statements)

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“…This is due to the compensation effect of closer spaced plants per hectare than the wider spacing which result in higher yield of tuber per plant. Similarly, report of Kanzikwera et al (2001) supports the present result as growing per unit area the number of tubers is highly dependent on plant density yield of oversize tubers is substantial only at low densities. Hanley et al (1965) also reported that total yield was highest at the highest planting density and fertilizer application rate.…”

Section: Total Tuber Yieldsupporting

confidence: 87%

Yield and yield components of potato (Solanum tuberosum L.) as influenced by planting density and rate of nitrogen application at Holeta, West Oromia region of Ethiopia

Negero¹

2017

Afr. J. Agric. Res.

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Four different nitrogen levels and four plant spacing were studied in 4×4 factorial arrangements in randomized complete block design with three replications. The highest yield, number of tuber, number of tuber and dry weight of tuber were obtained with application of jointly 100 and150 kg/ha nitrogen. Increasing plant density resulted in higher tuber yield, dry weight of tuber and total dry matter yield. Increasing nitrogen fertilizer rate 100 up to 150 kg/ha increased mean tuber weight and total dry matter yield. Since, 100 and 150 kg/ha nitrogen had no significant difference to each other producing the highest tuber yield and number of tuber, so in order to prevent environmental pollutions and excessive costs, utilization of 100 kg/ha nitrogen is recommended and any reduction in the planting density lower than 75×30 cm will lower both total yield and % marketable yield. So, 30 cm planting densities' producing the highest yield makes it suitable for planting. The combined effect of different level of nitrogen and plant spacing revealed that the highest nitrogen dose 150 kg/ha applied at the closest 75 cm × 10 cm gave the highest yield of tuber (10377.78 kg/ha). The narrower spacing of 10 cm produced numerous small-sized potatoes. These small-sized potatoes fell in grades that are not commercially accepted. The treatment combination, 150 kgN/ha applied at 75 cm × 20 cm spacing gave the second highest yield of tuber (9214.81 kg/ha). As the spacing increased to 30 cm, and with increasing nitrogen the tuber size increased with more potatoes falling in the acceptable grades. Yield of tuber per hectare was significantly and positively correlated with plant height, number of stem per plant, fresh weight, number of tuber and weight of tuber per plant. The highest marketable tuber yield of 4144.44 per plot was produced at 30 cm spacing, and the lowest marketable tuber yield was obtained at 75 cm × 10 cm (1111.11).

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Section: Total Tuber Yieldsupporting

confidence: 87%

Yield and yield components of potato (Solanum tuberosum L.) as influenced by planting density and rate of nitrogen application at Holeta, West Oromia region of Ethiopia

Negero¹

2017

Afr. J. Agric. Res.

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“…(), who reported that the phosphorus application did not affect the dry matter contents of the tubers. However, Maier, Dahlenburg, and Williams () and Kanizikwera, Tenywa, Osiru, Adipala, and Bhagsari () found a reduction in dry matter content in high nitrogen applications. This may be attributed to the fact that high rates of nitrogen stimulate vegetative growth more than tuber growth.…”

Section: Resultsmentioning

confidence: 96%

Response of potato to nitrogen and phosphorus fertilizers at Assosa, western Ethiopia

Setu

Mitiku

2020

Agronomy Journal

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Low soil fertility is one of the critical factors limiting the productivity of potatoes (Solanum tuberosum L.) in western Ethiopia. The field experiment was conducted in the 2015 and 2016 cropping seasons to elucidate the response of potato yield, yield components, tuber quality to nitrogen and phosphorus fertilizer, and their economic benefit. The treatment comprised five levels of nitrogen (0, 50, 100, 150, and 200 kg N ha −1 ) and five levels of phosphorus (0, 50, 100, 150, and 200 kg P 2 O 5 ha −1 ). The experiment was laid out as a randomized complete block design in a factorial (5 × 5) arrangement and we replicated the treatments three times. The results revealed that the interaction of nitrogen and phosphorus did not affect growth, yield, and quality parameters of potato. However, nitrogen alone affected plant height, tuber number per plant, number of stems per hill, and marketable and total tuber yield, but not tuber quality parameters. The optimum yields of both marketable (25.5 Mg ha −1 ) and total (28.4 Mg ha −1 ) tuber yields were observed in the application of 150 kg N ha −1 . Phosphorus treatments had no response for most of the yield, yield components, or tuber quality parameters. Applications of 150 kg N ha −1 provided a maximum gross margin ($5138.68 or 141,773.55 Ethiopian Birr [ETB] ha −1 ) with a 79.4% gross profit margin and the highest benefit-cost ratio (4.86).

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“…Increase in photosynthetic activity and translocation of photosynthesis to the sink might have helped in the initiation of more tubers. As reported in Uganda, nitrogen application to potatoes before tuber initiation increases the number of tubers per plant and mean fresh tuber weight (Kanzikwera et al, 2001). Phosphorus is relatively immobile in soil (Tisdale and Nelson, 1995) and because of its importance for early crop growth; banded application of phosphorus at planting is recommended (Rosen and Bierman, 2008).…”

Section: Resultsmentioning

confidence: 96%

Exploring Different Fertilizer Combinations for Potato Growth and Yield in Rawalpindi Region of Pakistan

Malik¹,

Naz²,

Mehdi

et al. 2018

World J. Biol. Biotechnol.

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Potato (Solanum tuberosum L.) is one of the most important tuber crops produced in Pakistan. Due to its nutritive importance, it ranks as fourth after rice, wheat and maize in the world. However, production of the crop is far below the average due to poor crop stand, soil fertility and water management practices. There is a strong need for improvement in the fair yield of potato through managed production techniques and best soil nutrient combinations. To find out the best combination of fertilizer level of NPK on growth, yield and quality of the potato crop, nine field experiments on potato crop were conducted at Rawalpindi division, Punjab Pakistan for three successive Rabi seasons during 2014-2017. Treatments consisted of four levels of N (244, 300, 356 and 412 Kg N ha-1), P (163, 200, 237 and 275 kg P ha-1) and K (136, 167, 198 and 229 Kg K ha-1) laid out in Randomized Complete Block Design (RCBD) with three replications. Results showed that there was no significant difference of location in terms of yield (T ha-1). However, mean data showed that the fertilizer combinations significantly (<0.05) affected yield and yield components of the potato crop. Among the treatments, NPK level (412, 275 and 229 Kg ha-1) gave maximum (100 tuber m-2), potato yield (3.2 Kg m-2), dry matter (1.3 Kg m-2), while the least number of tuber m-2 (63), potato yield m-2 (2.02 Kg), dry matter yield m-2 (0.9 Kg) were recorded where combination NPK (244, 163and 136 Kg ha-1) were applied. From the results, it can be concluded that farming community can obtain the maximum potato yield by adopting NPK (412, 275, 229) levels of fertilizers

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Interactive effect of nitrogen and potassium on dry matter and nutrient partitioning in true potato seed mother plants

Cited by 9 publications

References 0 publications

Yield and yield components of potato (Solanum tuberosum L.) as influenced by planting density and rate of nitrogen application at Holeta, West Oromia region of Ethiopia

Yield and yield components of potato (Solanum tuberosum L.) as influenced by planting density and rate of nitrogen application at Holeta, West Oromia region of Ethiopia

Response of potato to nitrogen and phosphorus fertilizers at Assosa, western Ethiopia

Exploring Different Fertilizer Combinations for Potato Growth and Yield in Rawalpindi Region of Pakistan

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