scholarly journals Potato Maximum Yield as Affected by Crop Parameters and Climatic Factors in Brazil

HortScience ◽  
2008 ◽  
Vol 43 (5) ◽  
pp. 1611-1614 ◽  
Author(s):  
André Pereira ◽  
Nilson Villa Nova
Keyword(s):  
Dry Matter ◽  
Climatic Factors ◽  
Maximum Yield ◽  
Crop Productivity ◽  
Matter Content ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Tropical Conditions ◽  
Potato Yields ◽  
Crop Parameters

There is currently a great deal of interest in estimating crop productivity as a function of climatic factors by means of different crop weather models. In this article, an agrometeorological model based on maximum carbon dioxide assimilation rates for C3 plants, fraction of photosynthetically active radiation, air temperature, photoperiod duration, and crop parameters is assessed as to its performance under tropical conditions. Crop parameters include leaf area, harvest index, dry matter content of potato tubers, and crop cycles to estimate potential potato yields. Productivity obtained with the cultivar Itararé, grown with adequate soil water supply conditions at four different sites in the state of São Paulo (Itararé, Piracicaba, Tatuí, and São Manuel), Brazil, was used to test the model. The results revealed excellent performance of the agrometeorological model proposed here with an underestimation of irrigated potato productivity of less than 10%.

scholarly journals Potato potential yield based on climatic elements and cultivar characteristics

Bragantia ◽  
2008 ◽  
Vol 67 (2) ◽  
pp. 327-334 ◽  
Author(s):  
André Belmont Pereira ◽  
Nilson Augusto Villa Nova ◽  
Valdir Josué Ramos ◽  
Antonio Roberto Pereira
Keyword(s):  
Dry Matter ◽  
Crop Productivity ◽  
Matter Content ◽  
C3 Plants ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Potential Yield ◽  
Climate Conditions ◽  
Crop Parameters ◽  
Climatic Elements

There is currently a great deal of interest in estimating crop productivity as a function of climatic elements by means of different crop weather models. An agrometeorological model is presented based on carbon dioxide assimilation maximum rates for C3 plants, fraction of photosynthetically active radiation, air temperature, photoperiod duration, and crop parameters under tropical climate conditions. Such crop parameters include leaf area and harvest indexes, dry matter content of potato tubers, and crop cycles to estimate potato potential yields. Field data from observed productivity obtained with the cultivar Itararé (IAC-5986), grown under adequate soil water supply conditions at four different regions in the State of São Paulo (Itararé, Piracicaba, Tatuí, and São Manuel), Brazil, were used to test the model. The results revealed an excellent performance of the agrometeorological model in study, with an underestimation of irrigated potato productivity less than 10%.

scholarly journals Near-infrared Spectroscopy for Rapid Estimation of Dry Matter Content in Whole Unpeeled Potato Tubers

2012 ◽  
Vol 1 (4) ◽  
pp. 55 ◽  
Author(s):  
Trygve Helgerud ◽  
Vegard H. Segtnan ◽  
Jens P. Wold ◽  
Simon Ballance ◽  
Svein H. Knutsen ◽  
...  
Keyword(s):  
Dry Matter ◽  
Near Infrared ◽  
Reference Method ◽  
Quality Parameters ◽  
Matter Content ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
External Reference ◽  
Explained Variance ◽  
Processed Potatoes

<p>The dry matter is one of the main quality parameters of raw and processed potatoes. In the present study, the potential of utilizing high throughput commercially available NIR interactance systems for dry matter determination in whole unpeeled potato tubers is investigated. The performance of a 2D NIR interactance instrument was compared with that of a 1D NIR interactance instrument and a traditional underwater weight apparatus. A total of 114 tubers were assessed individually with both of the NIR instruments (760-1040 nm), the underwater weight and an external reference method (freeze drying). The 1D interactance instrument obtained better prediction results than what the 2D instrument could achieve (R<sup>2</sup>=0.95, RMSECV=0.91, and R<sup>2</sup>=0.83, RMSECV=1.65, respectively). The underwater weight obtained the highest explained variance (R<sup>2</sup>=0.97), but the estimation was biased by approximately 1.5% (by weight). The poorer prediction performance of the 2D NIR interactance system can be partly explained by the lower penetration depths of the light compared to the 1D NIR interactance systems.</p>

scholarly journals Iodine Biofortification of Potato (Solanum tuberosum L.) Grown in Field

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1916
Author(s):  
Iwona Ledwożyw-Smoleń ◽  
Sylwester Smoleń ◽  
Stanisław Rożek ◽  
Włodzimierz Sady ◽  
Piotr Strzetelski
Keyword(s):  
Dry Matter ◽  
Foliar Application ◽  
Solanum Tuberosum L ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Iodine Content ◽  
Matter Content ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Daily Diet

Despite wide prevention programmes, iodine deficiency remains a substantial problem in various populations around the world. Consumption of crop plants with increased iodine content may help supply additional amounts of that element in a daily diet. The aim of the work was to evaluate the efficiency of iodine biofortification of potato tubers. Soil application of KI and foliar application of KIO3 in doses up to 2.0 kg I ha−1 were tested in a three-year field experiment. Biomass, yield as well as dry matter, iodine, starch, and soluble sugar content in potato tubers were analyzed. No negative effect of tested methods of iodine application on potato yield or dry matter content was observed. Both soil and foliar application of iodine allowed to obtain potato tubers with increased content of that element with no decrease of starch or sugar content. The highest efficiency of iodine biofortification was noted for foliar spraying with KIO3 in a dose of 2.0 kg I ha−1. The obtained level of iodine in 100 g of potatoes could be sufficient to cover up to 25% of Recommended Daily Allowance for that element. The findings of the study indicate that potatoes biofortified with iodine can become an additional source of I in a daily diet.

THE RELATION OF SOIL TEST VALUES TO FERTILIZER RESPONSE BY THE POTATO: III. EXCHANGEABLE POTASSIUM AND POTASSIUM FERTILIZER REQUIREMENTS

1964 ◽  
Vol 44 (3) ◽  
pp. 310-318 ◽  
Author(s):  
D. C. MacKay ◽  
C. R. MacEachern ◽  
R. F. Bishop
Keyword(s):  
Dry Matter ◽  
Maximum Yield ◽  
Matter Content ◽  
Poor Correlation ◽  
Soil Test ◽  
Dry Matter Content ◽  
Exchangeable Potassium ◽  
Potassium Fertilizer ◽  
Fertilizer Response ◽  
Response Equation

In experiments conducted at 46 locations over a 6-year period soil potassium levels ranged from 46 to 361 p.p.m. in exchangeable potassium and from 1.1 to 9.6% K saturation. The average yield of tubers on zero-K plots was 86.2% of the maximum (yield obtained from optimum K fertilization) and the zero-K plots produced less than 75% of the maximum at only two locations.Utilization of Bray's modified Mitscherlich equations indicated high variability in c1 values and poor correlation of relative yields (as percentages of the maxima) with soil test values. Expressing soil K as % K saturation provided only slightly better correlations than exchangeable K.The polynomial response equation relating absolute yields (bu/acre) with rates of applied potassium was highly significant, and near maximum yields of tubers were obtained at 150 lb/acre of K. When soils were grouped according to exchangeable K values into "high" (> 230 p.p.m.), "medium" (230–130 p.p.m.), and "low" (< 130 p.p.m.) classes, similar responses to application of K fertilizers were obtained for each. However, greater yields of tubers resulted on the higher soil test classes throughout the entire range of treatments.A highly significant linear depression in dry matter content resulted from potassium applications, with each 50 lb/acre increment of K depressing dry matter by 0.5%.

Agronomic characterization of sunflower cultivars for animal feeding in tropical conditions

2021 ◽  
Vol 37 ◽  
pp. e37050
Author(s):  
Saulo Almeida Sousa ◽  
Vagner Maximino Leite ◽  
Vanessa de Oliveira Almeida ◽  
Douglas dos Santos Pina ◽  
Luana Marta de Almeida Rufino ◽  
...  
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Agronomic Traits ◽  
Matter Content ◽  
Forage Yield ◽  
Dry Matter Content ◽  
Forage Production ◽  
Tropical Conditions ◽  
Flowering Rate ◽  
Animal Feeding

This study was developed to examine morpho-agronomic traits of 18 sunflower cultivars and identify superior cultivars in terms of grain yield, forage quality, or both, for animal feeding. Twenty-two morpho-agronomic traits related to plant development and architecture; earliness of maturity; grain yield (achenes); dry matter yield; and dry matter content were evaluated. Cultivars Hélio 253, Hélio 358, Embrapa 122, BRS 321, and Hélio 360 showed inflorescence at the final stage. Aguará 4 showed the lowest flowering rate, characterizing it as late-maturing. For grain yield, cultivars Charrua, Olisun 3, BRS 321, Paraíso 103CL, Paraíso 65, Aguará 6, and CF 101 are recommended, as they showed the highest achene yields (average: 1,541.67 to 2,148.81 kg.ha−1, respectively). Cultivars Charrua, Hélio 251, Olisun 3, Hélio 360, Paraíso 55, and Paraíso 103CL exhibited higher dry matter yields (9,550.93 to 11,789.91 kg ha−1) and were thus indicated for forage production. Cultivars Charrua, Olisun 3, BRS 321, Paraíso 103CL, Paraíso 65, Aguará 6, and CF 101 are recommended for grain yield, for the diet of monogastric animals; Charrua, Hélio 251, Olisun 3, Hélio 360, Paraíso 55, and Paraíso 103CL for forage yield, for ruminant feeding; and Charrua, Olisun 3, and Paraíso 103CL for both purposes.

SELECTION OF MEDIUM EARLY AND MID-SEASON VARIETIES OF POTATOES FOR THE STEPPE ZONE OF SOUTHERN URALS

2016 ◽  
Vol 1 (4) ◽  
pp. 18-21
Author(s):  
Аминова ◽  
Evgeniya Aminova ◽  
Мушинский ◽  
Aleksandr Mushinskiy ◽  
Герасимова ◽  
...  
Keyword(s):  
Dry Matter ◽  
Starch Content ◽  
Steppe Zone ◽  
Southern Urals ◽  
Matter Content ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Potato Varieties ◽  
Selection Of

The purpose of research is to identify the most adaptive and productive varieties of potatoes for the steppe zone of Southern Urals. The experience was laid by one-factor circuit in 3-fold repetition. The studies were conducted for middle- and middle-early varieties of potatoes domestic and foreign selection. Determined yield, marketability, starch and dry content in potato tubers. At 4 years of data were allocated potato varieties – Artemis (57.8 t/ha), Aerrow (52.0 t/ha) and Romano (49.5 t/ha). Distinguished highest yield of marketable products varieties: Artemis – 97.9%, Tarasov – 97.7%, and Aerrow Romano – 97.4%. The starch content in tubers was measurable by 10.2% (Ed Scarlett) to 16.0% (Kovalenko Memory), and the dry matter content in tubers ranged from 15.6% (Ed Scarlett) to 23.8% (Memory Kovalenko).

Specific gravity of tubers in relation to productivity of some sweet potato genotypes

1984 ◽  
Vol 103 (2) ◽  
pp. 475-476
Author(s):  
P. K. Ray ◽  
S. Mishra ◽  
S. S. Mishra
Keyword(s):  
Specific Gravity ◽  
Sweet Potato ◽  
Dry Matter ◽  
Germ Plasm ◽  
Matter Content ◽  
Yield Potential ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Recent Past ◽  
College Of Agriculture

In the recent past, specific gravity of tubers has been considered an easy means of estimating yield potential of sweet potato cultivars (Bryant, 1979) and their quality characters like starch value and dry-matter content (Ishikawa & Sakai, 1973). Bryant (1979) separated sweet potato tubers with low and high specific gravity at planting time by determining whether or not they floated in water, and observed that the floaters gave 20% higher yield than the sinkers. As this simple test claimed to hold promise for selecting higher-yielding sweet potato genotypes, it was decided to scan its usefulness at the College of Agriculture, Dholi, where a large collection of sweet potato germ plasm is being maintained for research needs.

scholarly journals The productivity of the potato at using different types of WMD

2021 ◽  
Vol 1 (43) ◽  
pp. 22-22
Author(s):  
Alexander Saakian ◽  
◽  
Keyword(s):  
Dry Matter ◽  
Fractional Composition ◽  
Organic Fertilizer ◽  
Matter Content ◽  
Favorable Effect ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Different Types

The use of organomineral fertilizers in the form of pellets and pellets with the addition of a humic phytobiocomplex, when growing potatoes, has a favorable effect on the fractional composition of tubers. The largest indicator of the mass and number of tubers was obtained on the variant with the introduction of WMD fertilizer in the form of pellets + GFBC, - 910.21 g/plant, with a total of 11.09 pcs. The treatment of GFBC for vegetation on the variant with OMU fertilizer in the form of pellets + GFBC allowed to obtain an increase in the yield of tubers of 4.82 t / ha, relative to the control crop of 31.59 t / ha. This technique contributed to an increase in the dry matter content, which was 19.09% and in the case of fertilizing the soil, 19.80%. Keywords: ORGANIC FERTILIZER, HUMIC VITABIOTICS, FRACTIONAL COMPOSITION OF POTATO TUBERS, YIELD, DRY MATTER

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