scholarly journals The Use of the WOFOST Model to Simulate Water-Limited Yield of Early Potato Cultivars

Agronomy ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 81
Author(s):  
Bogdan Kulig ◽  
Barbara Skowera ◽  
Agnieszka Klimek-Kopyra ◽  
Stanisław Kołodziej ◽  
Wiesław Grygierzec
Keyword(s):  
Tuber Yield ◽  
Food Studies ◽  
Dry Weight ◽  
Potato Cultivars ◽  
Research Centre ◽  
Tuber Weight ◽  
Early Potato ◽  
Water Deficiency ◽  
Potential Yield ◽  
Actual Yield

In this work, an attempt was made to use the WOFOST (WOrld FOod Studies) model to simulate the potential and water-limited yield of early potato cultivars Lord and Denar. Data from cultivar experiments carried out at the Polish Research Centre for Cultivar Testing in 2004–2013 were used in the study. The Lord cultivar yielded 22.4–67.8 t fresh tuber weight per ha and 3.8–11.5 t ha−1 dry tuber weight during the study period. The highest tuber yields (over 10 t ha−1 dry weight) were obtained in 2009, 2011 and 2012, and the lowest in 2005 (3.8 t ha−1) and 2006 (2.65 t ha−1). The water-limited tuber yield simulated by WOFOST ranged from 3.6 to 10.9 t ha−1 dry weight and was about 0.45 t ha−1 higher on average than the actual yield. The planting period each year was between days 104 and 120 of the year, and harvesting took place between days 216 and 232. Water availability was a factor limiting the yield. The yield limited by water deficiency was 38.7% lower (irrespective of the cultivar) than the potential yield. The WOFOST model was sensitive to water deficiency, and the simulated (water-limited) yields were close to the actual yield or showed a clear downward trend indicating evident rainfall shortages in 2005 and 2006.

Analysis of growth and tuber yield in sweet potato (Ipomoea batatas) cultivars

1977 ◽  
Vol 88 (2) ◽  
pp. 421-430 ◽  
Author(s):  
B. A. C. Enyi
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Dry Matter ◽  
Tuber Yield ◽  
Dry Weight ◽  
Tuber Weight ◽  
Crop Growth Rate ◽  
Growing Seasons ◽  
Total Dry Weight ◽  
Bulking Rate

SUMMARYGrowth and tuber yield of local sweet potato cultivars were compared during the 1974 and 1975 growing seasons. Three cultivars significantly outyielded the others. The cultivar effect was associated with differences in individual tuber weight, rate of bulking and percentage of total dry matter diverted into the vine or stem. Mean crop growth rate (C) and percentage of total dry matter diverted into the tubers were greater in the higher yielding cultivars and there was positive and significant correlation between Cand final total dry weight. Leaf area duration (D) was greater in 1975 than in 1974 but the differences between cultivars in D was not consistent. Higher yielding cultivars had significantly greater tuber/leaf ratio than the other cultivars.Bulking rate and tuber weight were positively correlated with tuber yield, while the percentage of total dry matter diverted into the vine was negatively correlated with tuber yield.

scholarly journals Potato cultivar BRS F63 Camila has higher yield at lower plant spacing

2019 ◽  
Vol 37 (1) ◽  
pp. 89-94
Author(s):  
Vlandiney Eschemback ◽  
Jackson Kawakami ◽  
Aline M Genú ◽  
Dioni Stroparo
Keyword(s):  
Tuber Yield ◽  
Potato Crop ◽  
Potato Cultivar ◽  
Dry Weight ◽  
Size Class ◽  
Plant Management ◽  
Tuber Weight ◽  
Plant Spacing ◽  
Marketable Tuber ◽  
Lower Plant

ABSTRACT The plant management used in potato crop is usually similar across the main producing regions in Brazil. Same plant spacing are commonly used, despite the differences in climate and soil of the various potato planting areas. The objective of this work was to evaluate the yield of potato cultivars in response to different plant spacing. Experiments were conducted in the field, and the treatments consisted of three cultivars (Agata, BRS Clara and BRS F63 Camila) and three plant spacing (20, 25 and 30 cm) in randomized blocks with three repetitions in two years. The total, marketable and non-marketable tuber yield, total and marketable number of tubers per area and size class, mean total and marketable tuber weight and percentage of tuber dry weight of the tubers were evaluated. Camila was the cultivar with highest yield when spaced 20 cm due to the greater number of tubers in the marketable class 100-200 g. In the 25 and 30 cm plant spacing, there was no difference in yield among cultivars. Depending on the cultivar and the destination of the harvested tubers, producers can choose the most appropriated plant spacing.

scholarly journals Effect of multi-nutrient complex fertilizers on growth and tuber yield of very early potato (Solanum tuberosum L.) cultivars

2013 ◽  
Vol 66 (3) ◽  
pp. 55-66 ◽  
Author(s):  
Wanda Wadas ◽  
Tomasz Dziugieł
Keyword(s):  
Leaf Area ◽  
Tuber Yield ◽  
Podzolic Soil ◽  
Plant Biomass ◽  
Solanum Tuberosum L ◽  
Weight Ratio ◽  
Potato Cultivars ◽  
Similar Response ◽  
Early Potato ◽  
Area Index

The aim of the study was to compare the effect of multi-nutrient complex fertilizers (HydroComplex, Nitrophoska Blue Special and Viking 13 from the nitrophoska group, and Polimag S from the amophoska group) and single-nutrient fertilizers on the growth and tuber yield of very early potato cultivars (‘Aster’, ‘Fresco’, ‘Gloria’). The field experiment was carried out on podzolic soil in mid-eastern Poland during 2005–2007. The study showed a greater beneficial effect of HydroComplex and Nitrophoska Blue Special on the growth of very early potato cultivars than that of Viking 13 and Polimag S. The application of HydroComplex and Nitrophoska Blue Special resulted in greater above-ground plant biomass and assimilation leaf area compared with single-nutrient fertilizers; the leaf area index (LAI) was higher by 0.28 and 0.32, respectively. The differences were smaller and not statistically confirmed with the use of Polimag S and Viking 13. When the multi-nutrient complex fertilizers were applied, leaf weight ratio (LWR), leaf area ratio (LAR) and specific leaf area (SLA) were similar to the single-nutrient fertilizers. Of the multi-nutrient complex fertilizers, only Nitrophoska Blue Special resulted in higher tuber yield, on average by 2.40 t × ha<sup>-1</sup>, compared with the single-nutrient fertilizers. The studied cultivars showed a similar response to applied fertilizers. LAI for ‘Gloria’ was higher than for ‘Aster’ and ‘Fresco’, with smaller LAR found in ‘Gloria’. LWR for ‘Fresco’ was smaller than for ‘Aster’ and ‘Gloria’, with higher SLA found in ‘Fresco’. The tuber yield of ‘Aster” (24.04 t × ha<sup>-1</sup>) was higher on average by 3 t × ha<sup>-1</sup> than for ‘Fresco’ and ‘Gloria’.

scholarly journals Effects of a Potato Spindle Tuber Viroid Tomato Strain on the Symptoms, Biomass, and Yields of Classical Indicator and Currently Grown Potato and Tomato Cultivars

Plant Disease ◽  
2019 ◽  
Vol 103 (12) ◽  
pp. 3009-3017 ◽  
Author(s):  
Alison E. Mackie ◽  
Martin J. Barbetti ◽  
Brendan Rodoni ◽  
Simon J. McKirdy ◽  
Roger A. C. Jones
Keyword(s):  
Tuber Yield ◽  
Tomato Fruit ◽  
Potato Cultivar ◽  
Dry Weight ◽  
Potato Spindle Tuber Viroid ◽  
Potato Cultivars ◽  
Wild Plants ◽  
Axillary Shoot ◽  
Potato Foliage ◽  
Tomato Cultivars

The Chittering strain of potato spindle tuber viroid (PSTVd) infects solanaceous crops and wild plants in the subtropical Gascoyne Horticultural District of Western Australia. Classical PSTVd indicator hosts tomato cultivar Rutgers (R) and potato cultivar Russet Burbank (RB) and currently widely grown tomato cultivars Petula (P) and Swanson (S) and potato cultivars Nadine (N) and Atlantic (A) were inoculated with this strain to study its pathogenicity, quantify fruit or tuber yield losses, and establish whether tomato strains might threaten potato production. In potato foliage, infection caused spindly stems, an upright growth habit, leaves with ruffled margins and reduced size, and upward rolling and twisting of terminal leaflets (RB, A, and N); axillary shoot proliferation (A); severe plant stunting (N and RB); and necrotic spotting of petioles and stems (RB). Tubers from infected plants were tiny (N) or small and “spindle shaped” with (A) or without (RB) cracking. Potato foliage dry weight biomass was decreased by 30 to 44% in A and RB and 37% in N, whereas tuber yield was diminished by 50 to 89% in A, 69 to 71% in RB, and 90% in N. In tomato foliage, infection caused epinasty and rugosity in apical leaves, leaf chlorosis, and plant stunting (S, P, and N); cupped leaves (S and P); and reduced leaf size, flower abortion, and necrosis of midribs, petioles, and stems (R). Mean tomato fruit size was greatly decreased in all three cultivars. Tomato foliage dry weight biomass was diminished by 40 to 53% (P), 42% (S), and 37 to 51% (R). Tomato fruit yield was decreased by 60 to 76% (P), 52% (S), and 64 to 89% (R), respectively. Thus, the tomato strain studied was highly pathogenic to classical indicator and representative current tomato and potato cultivars, causing major losses in fruit and tuber yields. Tomato PSTVd strains, therefore, pose a threat to tomato and potato industries worldwide.

Sprout and top-shoot cutting for rapid multiplication of potato in Bangladesh

1999 ◽  
Vol 132 (4) ◽  
pp. 437-443 ◽  
Author(s):  
M. J. HOSSAIN ◽  
M. S. NAHAR ◽  
A. U. AHMAD
Keyword(s):  
Conventional Method ◽  
Agricultural Research ◽  
Potato Cultivars ◽  
Combined Effect ◽  
Research Centre ◽  
Tuber Weight ◽  
Agricultural Research Institute ◽  
Rapid Multiplication ◽  
Late Planting ◽  
Tuber Crops

The combined effect of two rapid multiplication techniques (sprout and top-shoot cutting) was assessed using four Dutch potato cultivars during 1991/92–1993/1994 at the Tuber Crops Research Centre (TCRC), Bangladesh Agricultural Research Institute (BARI), Gazipur-1701, Bangladesh. On average, a 70–80 g tuber produced 29 sprout cuttings which were subsequently used for taking top-shoot cuttings. Top-shoot cuttings were taken at a number of dates from 25 November and continued at 10 day intervals, thereafter, until 15 January. The number of top-shoot cuttings produced by 29 sprout cutting-derived plants varied (P<0·01) from 761 to 663 across the cultivars. Cardinal gave the greatest yield. Most of the characters studied varied (P<0·01) between cultivars but not over years while the interaction between cultivars and years was significant (P<0·01).Early planted top-shoot cuttings produced more tubers per plant (4·0) with a greater mean tuber weight (>22 g) than from the late planting (1 tuber and 5·5 g). On average, about 2·8 tubers per plant were produced with a mean tuber weight of 15·8 g. Cardinal and Patrones produced the most tubers per plant (2·9) and Diamant the greatest mean tuber weight (16·8 g). Cardinal gave the greatest yield (P<0·01) of tubers (268) followed by Patrones (241). The 29 sprout cutting plants derived from a 70±5 g tuber produced 160 tubers while the 771 top-shoot plants derived from 29 sprout cutting-derived plants produced 1420 tubers. The rate of multiplication of the combined two RM techniques was 1580[ratio ]1 against 11[ratio ]1 for the conventional method.

scholarly journals Potential yield and efficiency of N and K uptake in tubers of cvs. Capiro and Suprema (Solanum tuberosum Group Andigenum)

2018 ◽  
Vol 36 (2) ◽  
pp. 126-134
Author(s):  
Manuel Iván Gómez ◽  
Stanislav Magnitskiy ◽  
Luis Ernesto Rodríguez
Keyword(s):  
Tuber Yield ◽  
Nutrient Use Efficiency ◽  
Dry Weight ◽  
Low Fertility ◽  
High Fertility ◽  
Environment Interaction ◽  
Potential Yield ◽  
Genotype Environment Interaction ◽  
Nutrient Use ◽  
Null Response

Potato yield depends on the genotype-environment interaction, edaphic nutrient supply, and fertilization rates. The total tuber yield (FWt), dry weight of tubers (DWt), harvest index (HI) and nutrient use efficiency in tubers (NUEt) were evaluated in the Andean region in Colombia at 75, 100, 125, and 150 d after sowing using two cultivars (Capiro, Suprema), three locations with contrasting soils (Subachoque, Facatativa and Choconta) and two levels of fertilization: F0 (unfertilized) and F1 (fertilized). The Humic Dystrudept soils with fertilization (Choconta) presented late tuber filling with increases of 48 and 64% for the DWt in the cvs. Suprema and Capiro, respectively. In Suprema, the highest production potentials were obtained in fertilized soils with low fertility, with increases of 60.9% for the DWt and 75% for the HI. On the other hand, Capiro was better adapted to soils with medium to high fertility, with increases of up to 86.7% for the FWt, as compared to the unfertilized soils. This increase may be related to higher rates of nutrient recovery efficiency (RFt), higher accumulated nutrients per tuber yield (EPt) and a better NUEt because N. Suprema presented a negative EPt and RFt with HI<45% and the lowest NUE of N and K in high fertility soils, which represents a null response to fertilization and possible mechanisms of luxury consumption for the evaluated elements.

scholarly journals Evaluation of Yield and Yield Components of Two Potato Cultivars in Khorasan Razavi Province of Iran

2019 ◽  
Vol 39 (4) ◽  
pp. 343
Author(s):  
Setareh Foroghian ◽  
Mohammad Reza Asgharipour ◽  
Mehdi Ghiafeh Davoodi
Keyword(s):  
Yield Components ◽  
Tuber Yield ◽  
Block Design ◽  
Potato Cultivars ◽  
Tuber Number ◽  
Tuber Weight ◽  
Stem Number ◽  
Randomized Complete Block Design ◽  
Yield And Yield Components ◽  
Split Plot

In order to study the yield and yield components of two potato cultivars, an experiment was conducted as a split plot based on a randomized complete block design with three replicates. The experiment was performed in two locations, Jolgeh-Rokh district, and Fariman city, in professional farmers’ fields in Khoarasan Razavi province. The main plots consisted of two potato cultivars, Agria and Fontane cultivars (medium maturing), which were identified as the main cultivars used in chips production factories in the Province. Our results showed higher potential of Agria cultivar for production of stems per plant compared to Fontana cultivar. Both stem number and tuber number per plant along with tuber weight and tuber yield were higher in Fariman location than in Jolgeh-Rokh.

INFLUENCE DES SYSTÈMES DE CULTURE SUR LA CROISSANCE ET LE RENDEMENT DES POMMES DE TERRE

1980 ◽  
Vol 60 (2) ◽  
pp. 591-598
Author(s):  
R. RIOUX ◽  
J. E. COMEAU
Keyword(s):  
Tuber Yield ◽  
Solanum Tuberosum L ◽  
Soil Conditions ◽  
Flowering Stage ◽  
Potential Yield ◽  
Traditional System ◽  
Yield Level ◽  
Cultural Systems ◽  
Final Yield ◽  
Actual Yield

Three cultural systems for potato (Solanum tuberosum L.) are evaluated on two soil types. A flat seedbed with hilling at the flowering stage promotes earlier plant growth and a higher early tuber yield than the traditional system (ridged seedbed with hilling at emergence) now used in Quebec. It also emphasizes the earliness of cv. Norland. Final yield with the above system is lower than with the traditional system in the presence but not in the absence of weeds. A ridged seedbed with hilling at the 15 to 20-cm stage gives low yields, particularly under wet soil conditions. The linear relationship between the site year and cultural system mean yields confirms these results. Linuron reduces tuber yield when used with the traditional system. Results indicate that potential yield is determined by leaf area but the actual yield level seems to be limited by rainfall during the latter part of the growing season.

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