scholarly journals Agronomic performance of sweet potato genotypes under management of liming and mineral fertilization

2020 ◽  
Vol 15 (1) ◽  
pp. 1-5
Author(s):  
R.B. Santos Junior ◽  
T.A.F. Souza ◽  
D. Santos ◽  
P.V. Ferreira ◽  
J.T. Cavalcante
Keyword(s):  
Sweet Potato ◽  
Agronomic Performance ◽  
Mineral Fertilization

scholarly journals Environmental Effect and Acetylsalicilyc Acid on Agronomic Performance of Three Sweet Potato Genotypes

OALib ◽  
2016 ◽  
Vol 03 (10) ◽  
pp. 1-7
Author(s):  
Sergio Contreras Liza ◽  
Hebert Huaman Saenz ◽  
Oscar Ciprian Torres
Keyword(s):  
Sweet Potato ◽  
Environmental Effect ◽  
Agronomic Performance

scholarly journals Agronomic performance of sweet potato crop in succession to leguminous plants in monocropping and intercropped with corn

2021 ◽  
Vol 39 (2) ◽  
pp. 186-191
Author(s):  
Jhonatan M Goulart ◽  
Adriano A Rocha ◽  
José Antonio A Espindola ◽  
Ednaldo da S Araújo ◽  
José Guilherme M Guerra
Keyword(s):  
Sweet Potato ◽  
Plant Biomass ◽  
Potato Crop ◽  
Biomass Accumulation ◽  
Agronomic Performance ◽  
Sweet Potatoes ◽  
Leguminous Plants ◽  
Jack Bean ◽  
Spontaneous Vegetation ◽  
Second Year

ABSTRACT This study aimed to evaluate sweet potato performance in succession to annual herbaceous leguminous plants, in monocropping or intercropped with corn, under agroecological management, under Baixada Fluminense conditions. The experimental design was randomized blocks, with five treatments and four replicates. The treatments consisted of pre-cropping with the following species: crotalária (Crotalaria juncea) under monocropping system, crotalária intercropped with corn (Zea mays), jack bean (Canavalia ensiformis) under monocropping system, jack bean intercropped with corn and spontaneous vegetation. The results showed that monocropped crotalária reached the greatest dry biomass accumulation during two consecutive years of succession. In the second year, this treatment provided greater accumulated amounts of N, K and Mg in plant biomass. Growing sweet potatoes in succession to the pre-cropping of crotalária is advantageous, as it provided an increase in vegetable productivity in the second year of succession.

scholarly journals Compost and Biochar to Promote Soil Biological Activities under Sweet Potatoes Cultivation in a Subtropical Semiarid Region

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Josabeth Navarro ◽  
Jahdiel Salazar ◽  
James Jihoon Kang ◽  
Jason Parsons ◽  
Chu-Lin Cheng ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Sweet Potato ◽  
Soil Ph ◽  
Aboveground Biomass ◽  
Biological Activities ◽  
Agronomic Performance ◽  
Storage Root ◽  
Root Yield ◽  
Sweet Potatoes ◽  
Bare Fallow

South Texas is located in a subtropical semiarid climate, and due to high temperature and irregular precipitation, farmers opt to leave their fields fallow during the summer months jeopardizing overall soil health. We evaluated whether sweet potato (Ipomoea batatas) cultivation coupled with drip irrigation could restore soil biological activities compared with bare fallow. Additionally, because sweet potatoes have high demand of soil nutrients, especially potassium (K), we evaluated the nutrient supply of locally sourced soil amendments. Sweet potato was cultivated during summer 2018 in McAllen, Texas, under control (no fertilizer), NPK (synthetic fertilizer), RC (yard-waste compost), and AC (compost produced under an enhanced composting process), and biochar (gasified walnut shell at 900°C), each with three replicates. Soil amendments were applied at different amounts to result in a rate of 80 kg K ha−1. Soil biological indicators were microbial biomass phosphorous, phosphatase activity, and the rate of fluorescein diacetate hydrolysis (FDA). Available nitrogen, phosphorus, potassium, and sodium were also quantified. Aboveground biomass and storage root yield estimated sweet potato’s agronomic performance. Cultivation and irrigation stimulated soil enzyme activities and microbial biomass-phosphorous. Sweet potato yields were the highest in NPK treatment but still 2.8 times lower than variety’s potential yield. Storage root yield was inversely related to aboveground biomass, suggesting that growing conditions benefited the production of shoot versus roots. Both biochar and AC treatments stimulated FDA rates and K availability. Soil pH and sodium concentration increased in all treatments over the growing season, possibly due to river-sourced irrigation water. Together, these findings show that crop cultivation promoted soil biological activities and the maintenance of nutrient cycling, compared to bare-fallow conditions. For a better agronomic performance of sweet potato, it would be necessary to identify management practices that minimize increase in soil pH and salinity.

scholarly journals THE ECONOMIC EFFICIENCY OF GROWING SWEET POTATO (IPOMOEA BATATAS L. [LAM.]) IN POLISH SOIL AND CLIMATE CONDITIONS

2020 ◽  
Vol XXII (2) ◽  
pp. 99-110
Author(s):  
Barbara Krochmal-Marczak ◽  
Barbara Sawicka ◽  
Bernadetta Bienia ◽  
Małgorzata Górka ◽  
Olutosin A. Otekunrin
Keyword(s):  
Sweet Potato ◽  
Economic Efficiency ◽  
Ipomoea Batatas ◽  
Plant Protection ◽  
Economic Effect ◽  
Potato Production ◽  
Agricultural Practice ◽  
Mineral Fertilization ◽  
Climate Conditions

The aim of this research was to determine the economic efficiency of sweet potato production in Polish conditions (49°49′ N, 21°50′ E). The study was based on the results of a 3-year (2017–2019) field experiment conducted in slightly acidic brown earth. The experiment used the random subblocks method, in which the main experimental factors were cultivation technologies: A) traditional, with no cover, B) with the use of PP spunbond nonwoven. Secondary factors included 5 cultivars of sweet potato of all earliness classes (Goldstar, Carmen Rubin, Satsumo Imo, Beauregard, White Triumph). Constant organic and mineral fertilization was used, and cultivation was carried out in accordance with normal agricultural practice. The propagating material included rooted cuttings of sweet potato from in vitro propagation, planted with 50 x 75 cm spacing. The economic effect of production was determined by all experimental factors. The profitability of production was increased by the use of PP spunbond nonwoven. The most beneficial economic factors were achieved when growing the Beauregard cultivar, and the least – when growing White Triumph. The largest cost of sweet potato commercial production were sweet potato cuttings, which amounted to 56%, and the smallest – plant protection products – 1% of direct costs per 1 ha of crops. Sweet potato production in Polish soil and climate conditions between 2017–2019 turned out to be cost-effective.

scholarly journals Agronomic performance of maize (Zea mays L.) genotypes under Azospirillum brasilense application and mineral fertilization

2021 ◽  
Vol 53 (1) ◽  
pp. 68-78
Author(s):  
Luiz Eduardo Tilhaqui Bertasello ◽  
Vinicius Augusto Filla ◽  
Anderson Prates Coelho ◽  
Gustavo Vitti Môro
Keyword(s):  
Grain Yield ◽  
Azospirillum Brasilense ◽  
Block Design ◽  
Yield Potential ◽  
Mineral Fertilizers ◽  
Agronomic Performance ◽  
Mineral Fertilization ◽  
Maize Grain Yield ◽  
Maize Genotypes ◽  
Maize Grain

Maize has a high nitrogen demand; as a result, more sustainable alternatives are needed to reduce demand for mineral fertilizers. This study aimed to evaluate and characterize the agronomic performance of maize genotypes submitted to topdressing nitrogen fertilization and inoculation with Azospirillum brasilense. An experiment was conducted in the second season of 2017, in Jaboticabal-SP (Brazil), using 48 maize genotypes in a randomized block design. Treatments consisted of: 1) application of 140 kg ha-1 nitrogen, using urea as mineral fertilizer; 2) A. brasilense inoculation via soil, at a rate of 600 mL ha-1, as biological fertilization. Grain yield and agronomic traits were evaluated. The data were subjected to analysis of variance (F-Test), means were compared by Scott-Knott test at 5% probability, and multivariate statistical analysis was performed by principal component analysis. A. brasilense inoculation via soil has a significant effect on female flowering, on the interaction between genotype versus N supply for Fusarium spp., and increases the maize grain yield; however, the responses of agronomic attributes vary with genotype. Highlights The inoculation with Azospirillum brasilense via soil increases maize grain yield, becoming viable and more sustainable alternative in the supply of nitrogen. The choice of the genotypes is an essential fator for the sucessful use of Azospirillum brasilense application or mineral fertilization, because the responses of agronomic attributes vary with the genotype. The most contrasting genotypes can be recombined in new stages of crossbreeding and selection, aiming at obtaining genotypes with greater yield potential in the use of Azospirillum brasilense inoculation. Further studies are needed to better understand this technology under conditions with different genotypes, soils and production systems.

scholarly journals Agronomic Performances and Nutritional Assessment of Three Sweet Potato Varieties (Ipomoea batatas (L) Lam.) Introduced in an Agro-ecological Zone of Groundnut Basin in Senegal

2020 ◽  
pp. 1-12
Author(s):  
Papa Mamadou Dit Doudou Sylla ◽  
Fatou Ndoye ◽  
Abdou Badiane ◽  
Mame Samba Mbaye ◽  
Laure Tall ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Dry Matter ◽  
Nutritional Assessment ◽  
Block Design ◽  
Morphological Characteristics ◽  
Stem Length ◽  
Ecological Zone ◽  
Mineral Fertilization ◽  
Potato Varieties

Aims: To evaluate the agronomic and nutritional performances of three varieties of sweet potato (Kandee, Caromex and Gandiol1) cultivated for the first time in the agro-ecological zone of the groundnut basin in Senegal. Study Design: The experiment was arranged in Randomized Completely Block Design. Place and Duration of Study: The study was conducted during two growing seasons from April to August 2017 and from October 2018 to February 2019 in Sagna village (Kaffrine, Senegal). Methodology: The planting of the cuttings was done with a density of 0.3 x 1 m or 3333.3 cuttings ha-1. Drip irrigation was used and mineral fertilization with 15-15-15 was applied. In each elementary plot, 5 plants were checked monthly for growth and phytosanitary monitoring. The harvest took place at 145 days after planting. The yields and agro-morphological characteristics of the roots were determined as well as their nutritional value and the incidence of bio-aggressor attacks. Results: The success percentage of cuttings was 90.1, 90.5 and 88% for Kandee, Caromex and Gandiol1, respectively. The length development of sweet potato stems was variable between the 3 varieties. The Gandiol1 variety with stems longer than 1.6 m was very spread out contrary to Caromex whose average stem length did not exceed 0.5 m. The marketable tuber yields obtained were comparable between the varieties and were 21.5, 22.5 and 13.4 t ha-1 respectively for Kandee, Caromex and Gandiol1. The morphology of the tubers was different in shape (diameter and length) but also in flesh color. Kandee had orange flesh, rich in carotenoids (101.1 mg/kg; P<0.001), Caromex a cream color with carotenes of 43.2 mg kg-1 and Gandiol1 a white flesh. Caromex had the best proportion of dry matter (40.6%; P<0.001) compared to the other varieties. This amount of dry matter was correlated with the marketable root yield (r=0.54; P=0.04) and the carbohydrates amount (r = 0.52; P=0.05). Bio-aggressor incidence on tubers was lower for the Kandee variety (10.3%; P=0.01). Conclusion: Sweet potato varieties performed well in the agro-ecological conditions of the groundnut basin and showed comparable agronomic performance. The three varieties can be discriminated on the level of their nutritional quality, particularly on their β-carotene content.

scholarly journals Agronomic performance and drought tolerance level of sweet potato hybrids grown in Kupang, East Nusa Tenggara, Indonesia

2019 ◽  
Vol 20 (8) ◽  
Author(s):  
YOSEP S. MAU ◽  
ANTONIUS S.S. NDIWA ◽  
JENNY E.R. MARKUS ◽  
I G.B. ADWITA ARSA
Keyword(s):  
Drought Tolerance ◽  
Sweet Potato ◽  
Growth And Yield ◽  
F1 Hybrids ◽  
Stressed Condition ◽  
Agronomic Performance ◽  
Irrigation Level ◽  
Performance Variables ◽  
Tolerance Level ◽  
Main Plot

Abstract. Mau YS, Ndiwa ASS, Markus JER, Arsa IGBA. 2019. Agronomic performance and drought tolerance level of sweet potato hybrids grown in Kupang, East Nusa Tenggara, Indonesia. Biodiversitas 20: 2187-2196. This study was conducted to evaluate agronomic performance and to assess drought tolerance level of purple and orange-fleshed F1 sweet potato hybrids in dryland during dry season in Kupang, East Nusa Tenggara. The study was carried out in Integrated Archipelagic Dryland Field Laboratory of Universitas Nusa Cendana, Kupang, from May to October 2018. Two sets of experiment were conducted, the first was for evaluation of agronomic performance, and the second was for evaluation of drought tolerance of the sweet potato genotypes. The first experiment assessed the agronomic performance of 20 sweet potato genotypes in a Randomized Block Design. The second experiment employed a Split Plot Design consisted of irrigation level as the main plot and sweet potato genotypes as subplot treatments. The main plot consisted of no stress (normal) and water-stressed conditions while the sub-plot comprised of 20 genotypes of the sweet potato. The observed agronomic performance variables included growth and yield parameters. Tuber yields in no stress and water-stressed conditions were observed and used for assessment of drought tolerance. The results showed that, in the agronomic performance experiment, the sweet potato genotypes differed significantly in all the observed agronomic performance variables including growth, yield contributing, and yield variables. UNC2016.Cil/JPV.01 and UNC2016.Cil/JPV.05 were short maturing genotypes with only about 90 days to harvesting while the rest of the genotypes were harvested in 120 to 150 days. The genotypes were also significantly varied in tuber yield; the highest was observed in UNC2016.JPV/KDL.11 (43.38 t ha-1). In the drought tolerance evaluation experiment, tuber yields in no stress and stressed condition were, respectively, 23.42 t ha-1 and 7.08 t ha-1. Six F1 hybrids were classified and selected as drought-tolerant genotypes with high yielding performance in both no stress and water-stressed conditions.

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