Rate and timing of nitrogen fertilizer application on potato ‘FL1867’ part II: Marketable yield and tuber quality

Rens, Libby R.; Zotarelli, Lincoln; Cantliffe, Daniel J.; Stoffella, Peter J.; Gergela, Doug; Burhans, Dana

doi:10.1016/j.fcr.2015.08.008

Cited by 28 publications

(18 citation statements)

References 24 publications

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“…Otherwise, upon 130 to 190 kg N ha -1 yields varying from 20 to 25 tons ha -1 potato tubers were harvested (Manorama et al, 2012). Rens et al (2015) found peak potato marketable yields with 112 kg ha -1 applied at emergence time. Kirundo yield around 20 tons ha -1 under the application of 120 kg N ha -1 is within these ranges.…”

Section: Comparative Potato Variety Responses To Nitrogen Fertilizer mentioning

confidence: 98%

Productivity of Irish potato varieties under increasing nitrogen fertilizer application rates in Eastern Rwanda

Karemangingo¹,

Bugenimana²

2018

Afr. J. Agric. Res.

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Irish potatoes are an important crop only promoted in cool and high moist conditions of Rwanda. This study explored the productivity of Irish potatoes varieties under increasing nitrogen fertilizer applications in drier agro-climatic conditions of the eastern Rwanda. Potato seeds mass-selected from locally-grown varieties in the region surrounding Kibungo town (-2.160897°, 30.543591°) were planted under rain-fed conditions, during the March to June agricultural season of 2015, in the three experimental farms of the University of Kibungo at Karenge, Mugesera and Rwamagana, respectively located in Kibungo town, 30 km West and 50 km North of Kibungo town. The most performing three varieties were tested again in 2016A season (October to January, 2016) at Kibungo and Rwamagana. For each season, and at each farm, four nitrogen application rates (0, 60, 120, and 180 kg N ha-1) were tested. Phosphate and potash were supplied in sufficient amounts of 150 kg P 2 O 5 ha-1 and 60 kg K 2 0 ha-1 , respectively. No fertilizers were applied on the control treatment. A split plot design and three replicates were used with varieties in main plots and nitrogen in sub-plots. Plant growth rate, shoot counts, tuber calibration, and total and market potato tuber yields were monitored. Four varieties yielded 10 tons ha-1 or more of total potato tuber yields in 2015B season. Three of them, namely Kirundo, Gasore, and Peko varieties, were re-tested in 2016. Over the two seasons, Kirundo variety stood out with 12.8 and 10.5 tons ha-1 of total and marketable tuber yields, respectively. All the varieties significantly responded to nitrogen fertilizer. However, Kirundo variety, respectively yielded 22 tons and 17 tons ha-1 of total and market potato tuber yields under 120 kg N ha-1 during the 2016A season. Irish potato can therefore be grown and produce substantial yield in eastern Rwanda, provided that appropriate nitrogen fertilization and seed quality are available.

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Section: Comparative Potato Variety Responses To Nitrogen Fertilizer mentioning

confidence: 98%

Productivity of Irish potato varieties under increasing nitrogen fertilizer application rates in Eastern Rwanda

Karemangingo¹,

Bugenimana²

2018

Afr. J. Agric. Res.

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“…The second dose of N was not applied due to the unavailability of chemigation equipment. However, Rens et al (2015) reported that application of N at tuber initiation did not improve marketable potato yield or tuber quality for the FL1867 variety that had received adequate N at preplant. A pesticide (Brigade EC, FMC Corp., Philadelphia, Pa.) was applied in early July to control black blister beetles that infested the outer three plant rows, causing marked defoliation in this buffer area, which was planted to prevent edge effects.…”

Section: Agronomic and Farming Practicesmentioning

confidence: 99%

“…Mean tuber yields were based on marketable tubers, i.e., with a circumference between 4.75 and 10.3 cm (Rens et al, 2015). In 2018, overall mean tuber yields ranged from 32.3 to 42.0 Mg ha -1 by irrigation scheduling method and from 31.3 to 40.7 Mg ha -1 by irrigation level (table 8).…”

Section: Tuber Yields Etc Cwp Iwp and Specific Gravitymentioning

confidence: 99%

Irrigation Management of Potatoes Using Sensor Feedback: Texas High Plains

O’Shaughnessy¹,

Andrade²,

Colaizzi³

et al. 2020

Transactions of the ASABE

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HighlightsPotatoes irrigated at 80% and 100% replenishment of soil water depletion to field capacity resulted in statistically similar tuber yields and irrigation water productivity.In the drier growing season, irrigation scheduling using sensor feedback resulted in fewer irrigations compared with the manual-control method.In the wetter growing season, irrigation scheduling using sensor feedback resulted in similar or better tuber yields compared with the manual-control method.Abstract. Few studies have investigated yield and crop water productivity of plant and soil water sensing feedback systems for site-specific irrigation management of a potato crop. In this two-year study (2018 and 2019), the irrigation scheduling supervisory control and data acquisition (ISSCADA) system developed by scientists at the USDA-ARS Conservation and Production Research Laboratory in Bushland, Texas, was used to manage a potato crop at three irrigation levels. The ISSCADA system used two different irrigation scheduling methods: (1) plant feedback and (2) a hybrid method that combines plant feedback with soil water sensing with a soil water depletion (SWD) threshold initially set at 50% and reduced to 35% in the second year. Tuber yield, crop water productivity (CWP), and irrigation water productivity (IWP) resulting from the two ISSCADA irrigation scheduling methods were compared with a manual-control method based on weekly neutron probe readings. The irrigation levels were 100%, 80%, and 60% (I100, I80, and I60) of full and were accomplished by either replenishment of SWD to field capacity or by the equivalent plant feedback or SWD thresholds of the ISSCADA system. In the second study year, the SWD threshold was reduced to 35%. Cumulative irrigation amounts for the ISSCADA treatment methods were significantly less compared with the manual-control method in the I100 levels for both years. This resulted in significantly smaller tuber yields and CWP in the first year of the study, a hot dry growing season. In the second year of the study, tuber yields and CWP were similar between irrigation scheduling methods, and IWP was significantly greater for the ISSCADA-plant feedback method. Considering the effect of irrigation treatment, the tuber yields, CWP, and IWP between the I100 and I80 levels were similar in both years, resulting in an average savings of 85 mm at the I80 level. Future studies are needed to investigate if the change in the SWD threshold could enable the ISSCADA-hybrid system to adjust to variable climatic conditions and successfully irrigate potatoes in this region. Keywords: Center pivot, Dynamic prescription maps, Plant feedback, Site-specific variable-rate irrigation, Soil water sensing feedback, Wireless sensor networks

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“…China is the largest potato producer in the world-the planting area is 5.6 million hectares and the yield is more than 95 million tons per year [3], which accounts for 25% of the world s total planting area and yield, but the yield per unit area is only 83% of the world average [4]. Increasing demand for potatoes along with economic pressures have forced potato growers to move toward more intense cropping systems with extensive use of synthetic fertilizers and increased frequency of potato in crop rotations, which has raised environmental concerns and costs of production [1,5]. Therefore, alternative field management practices to reduce synthetic fertilizer use and improve yield of potato seem crucial for potato production, which will enhance farmers' profitability by enhancing yield [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

et al. 2019

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In dry environments, potato (Solanum tuberosum L.) is grown under mulching for water conservation and improving tuber yield and nitrogen use efficiency (NUE). A meta-analysis was conducted to determine how mulching improved tuber yield and NUE in potato and how yield and NUE is influenced by fertilization, tillage practices, and growing environment in China. A search of peer-reviewed publications was performed to collect data on the effects of mulching on yield and NUE in potato grown in China. The data included were from field studies with a mulching and a no mulching treatment and data on tuber yield and NUE. A total of 169 publications (17 in English and 152 in Chinese) containing 1802 observations from 105 sites were compiled into the dataset. Mulching significantly increased both tuber yield and NUE by an average of 24% compared to no mulching, respectively. Plastic film mulching was more effective in improving yield and NUE than straw mulching. The yield and NUE increase were highest under plastic film mulching on ridge-furrow plots and straw mulching on flat plots. Mulching was more effective at improving yield and NUE in the Northwest dryland region at a plant density between 55,000 and 70,000 plants ha−1 and with application of synthetic N and P2O5 at rates of 100−200 kg ha−1, K fertilization at 0−100 kg K2O ha−1, and without organic fertilization. Integrated use of organic fertilizer and mulching was found to reduce synthetic N and P fertilizer input by 50% and K fertilizer input by 100% for production without affecting yield and NUE. These results demonstrate that mulching increases yield and NUE in potato in China, but the benefits occur when the growing region, tillage, and fertilization practices are appropriately considered.

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Rate and timing of nitrogen fertilizer application on potato ‘FL1867’ part II: Marketable yield and tuber quality

Cited by 28 publications

References 24 publications

Productivity of Irish potato varieties under increasing nitrogen fertilizer application rates in Eastern Rwanda

Productivity of Irish potato varieties under increasing nitrogen fertilizer application rates in Eastern Rwanda

Irrigation Management of Potatoes Using Sensor Feedback: Texas High Plains

Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

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