Establishment of Chlorophyll Meter Measurements to Manage Crop Nitrogen Status in Potato Crop

Marouani, A.; Behi, Omar; Salah, Halim Ben Haj; Quilez, Octavio Arquero

doi:10.1080/00103624.2014.997386

Cited by 7 publications

(5 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies with hand-held chlorophyll meters, including the SPAD-502 equipment, reported inconsistent optimum NSI threshold for monitoring potato N status and suggested values ranging from 84 to 94.8% (Coelho et al, 2012;Giletto et al, 2010;Marouani et al, 2015). However, Bohman et al (2019) found a low degree of sensitivity to detect potato N stress (cultivar Russet Burbank) when SPAD-502 sensor was used at a NSI threshold of 95%.…”

Section: Core Ideasmentioning

confidence: 99%

“…The SPAD‐502 sensor accuracy in estimating plant N status is higher when readings are performed at the top leaflet of the fourth uppermost fully expanded leaf (Li et al., 2012). However, factors such as cultivar, growth stage, leaf thickness, reading time, leaf position, other nutrient deficiencies, water stress, and soil type may influence SPAD readings (Gianquinto et al., 2004; Giletto et al., 2010; Li et al., 2012, 2019; Marouani, Behi, Salah, & Quilez, 2015; Milagres et al., 2018; Minotti et al., 1994; Rolando, Ramírez, Yactayo, Monneveux, & Quiroz, 2015; Silva, Coelho, Braun, & Fontes, 2011; Zakeri et al., 2015; Zheng et al., 2015; Zhu, Tremblay, & Liang, 2011). In order to establish a standard recommendation, it is suggested to perform SPAD‐based plant N status monitoring using nitrogen sufficiency indices (NSIs), a value obtained from the ratio of SPAD values measured in plants receiving in‐season adjusted N fertilization and those cultivated in a reference non‐limiting N supply area (Bohman, Rosen, & Mulla, 2019; Gianquinto et al., 2004; Minotti et al., 1994; Zakeri et al., 2015; Zhang et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies with hand‐held chlorophyll meters, including the SPAD‐502 equipment, reported inconsistent optimum NSI threshold for monitoring potato N status and suggested values ranging from 84 to 94.8% (Coelho et al., 2012; Giletto et al., 2010; Marouani et al., 2015). However, Bohman et al.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Chlorophyll meter‐based leaf nitrogen status to manage nitrogen in tropical potato production

et al. 2021

View full text Add to dashboard Cite

Potato (Solanum tuberosum L.) is a N intensive crop, and meeting its requirements with N fertilization is the primary practice to improve N recovery and achieve suitable tuber yield. A 3-site-year (SY) study was conducted to assess soil plant analysis development (SPAD)-502 chlorophyll meter efficacy for providing potato leaf real-time N status to adjust N timing and rate using nitrogen sufficiency index (NSI) thresholds of 90 or 95%. We evaluated effects of in-season SPAD-based N managements, as well as a reference with non-limiting N application, a fixed-timing (planting and hilling) conventional N fertilization, and a zero-N control on crop N uptake, tuber yield, and N-use efficiency of potato cultivar Agata grown in tropical clay soils. Tuber yields were similar in both SPAD-based managements. Under no intensive rainfall events after N applications, SPAD-based managements reduced N applications by 38-63% and resulted in comparable tuber set, bulking, and yield relative to conventional N fertilization. Additionally, SPAD-based management at a NSI threshold of 90% resulted in greater potato N-uptake efficiency and tuber yield per unit of N applied. SPAD-502 sensor was efficient for detecting plant N status when environmental conditions were more conducive for potato production and optimized N management by reducing application rates. However, with less favorable temperature and solar radiation for potato cultivation, and with intensive rainfall events following N application, SPAD readings did not guide to a proper N fertilization and resulted in reduced tuber yield. Therefore, under such conditions, a more accurate method for detecting plant N status should be used.

show abstract

Section: Core Ideasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Chlorophyll meter‐based leaf nitrogen status to manage nitrogen in tropical potato production

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In addition, the weight of dry plant of the plant which was not significantly different might be due to the low N nutrient in the soil. Because N is an element which plants need in large quantities, but its presence in the soil is very mobile so that it is easily lost from the soil through washing or evaporation [18]. Lack of N will result in a decrease in plant weight of dry plant, leaf area, thereby reducing the rate of photosynthesis [19,20].…”

Section: Weight Of Dry Plantmentioning

confidence: 99%

Response of growth and production of potato plants to application of NPK fertilizer

Tulung¹,

Amin²,

Manoppo³

2021

E3S Web Conf.

View full text Add to dashboard Cite

Fertilizer is one of the determining factors for the success of potato cultivation. Various types of fertilizers have been produced, but those that are suitable for regional conditions in North Sulawesi do not yet exist. The decreasing of potato production in North Sulawesi is due to the limited use of quality and certified seeds, as well as inappropriate fertilizer dosages. This research objective was to see the effect of NPK fertilization on the production of Medians potato plants. The research was conducted from August to December 2020, in Rurukan Village, East Tomohon District, Tomohon City, North Sulawesi. The experimental design used was randomized complete block design (RCBD) with seven treatments, namely the NPK fertilizer dosage of 0 kg ha-1 (P0), 150 kg ha-1 (P1), 300 kg ha-1 (P2), 450 kg ha-1 (P3), 600 kg ha-1 (P4), 750 kg ha-1 (P5) and 900 kg ha-1 (P6). Each treatment was repeated three times and resulting in 21 treatment plots. The results showed that application of NPK fertilizer of 450 kg ha-1 resulted the highest yields on the components of weight of fresh plant, tuber diameter, and potato productivity.

show abstract

“…Nitrogen (N) is a vital element for potato growth because of its roles in photosynthetic activities, chlorophyll accumulation, crop growth, potato tuber yield and dry matter accumulation (Goffart et al, 2011;Chlingaryan et al, 2018). It is the most often limiting nutrient for potato growth and the value of the other inputs cannot be fully achived unless the amount of mineral N applied is optimal (El Mokh et al, 2015;Marouani et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Use of GreenSeeker and CM-100 as manual tools for nitrogen management and yield prediction in irrigated potato (Solanum tuberosum) production

Satognon

Lelei

Owido

2021

Arch. Agric. Environ. Sci.

View full text Add to dashboard Cite

This study evaluated the possibility of the use of GreenSeeker sensor and CM-100 chlorophyll content meter for in-season N and yield prediction in order to promote timely split N application in potato production in Kenya. Four N-fertilization rates; N0 (0), N1 (60), N2 (90) and N3 (130 kg N/ha) were led out in a Randomized Complete Block Design (RCBD) in a Greenhouse for two seasons. The results showed that % N leaf content was significantly affected by N rates. The % N leaf content and potato leaf chlorophyll content decreased as the season continued whereas the Normalized Difference Vegetation Index (NDVI) increased as the season continued. CM-100 values were significantly correlated with % N leaf content at vegetative (r=0.86***) and tuber initiation (r=0.74***) growth stages of the crop whereas the NDVI values were only significantly correlated with % N leaf at tuber initiation (r=0.82***). A significant relationship was found between CM-100 values taken at different potato stages (end of vegetative, tuber initiation, bulking and maturation stages) and tuber yield (r=0.90***, 0.82***, 0.47* and 0.41*). The NDVI values at end of vegetative growth, tuber initiation and maturation of potato were also significantly correlated with tuber yield (r=0.81***, 0.43* and 0.54*), except at bulking stage (r=0.33). For efficient in-season N management and yield prediction, CM-100 and GreenSeeker are recommended at an early stage of the crop. Further research in the different potato growing areas in Kenya to establish the different thresholds at different potato growth stages is recommended.

show abstract

Establishment of Chlorophyll Meter Measurements to Manage Crop Nitrogen Status in Potato Crop

Cited by 7 publications

References 31 publications

Chlorophyll meter‐based leaf nitrogen status to manage nitrogen in tropical potato production

Chlorophyll meter‐based leaf nitrogen status to manage nitrogen in tropical potato production

Response of growth and production of potato plants to application of NPK fertilizer

Use of GreenSeeker and CM-100 as manual tools for nitrogen management and yield prediction in irrigated potato (Solanum tuberosum) production

Contact Info

Product

Resources

About