potato yield
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Author(s):  
Darlaine M. Ferreira ◽  
Tiyoko N. H. Rebouças ◽  
Risely Ferraz-Almeida ◽  
John S. Porto ◽  
Roberta C. Oliveira ◽  
...  

ABSTRACT Organomineral fertilizer has great potential to replace synthetic fertilizers. The goal of this study was to determine an optimal substitution rate of organomineral fertilizer for mineral fertilizer to increase potato yield and quality. The experimental design was a randomized complete block with four replicates and six treatments, namely four substitution rates of organomineral fertilizer application (25, 50, 75, and 100% of mineral fertilizer demand), one rate of mineral fertilizer application (100% of mineral fertilizer demand), and the control (no fertilizer application). The organomineral application rates were tested as an alternative to substitute 25 to 100% of mineral fertilizer. The potato yield (total and in-class) and quality and plant and soil nutrient contents were monitored. The pH and total soluble solid contents had positive correlations with yield. Potatoes accumulated higher contents of K > N > P in the leaves, stems, and tubers. The organomineral fertilizer application rate of 3.7 t ha-1 (equivalent to 100% of mineral fertilizer demand) was the optimal rate to increase potato yield and quality. Organomineral fertilizer is a viable alternative to increase potato quality and yield and to increase plant and soil nutrient contents.


2022 ◽  
Vol 217 ◽  
pp. 105273
Author(s):  
Xiya Wang ◽  
Yu Duan ◽  
Jun Zhang ◽  
Ignacio A. Ciampitti ◽  
Jiwen Cui ◽  
...  

2021 ◽  
Vol 15 (4) ◽  
pp. 56-64
Author(s):  
V. B. Minin ◽  
A. M. Zakharov

The authors showed that the organic production is an actively growing global business: in 2017, it occupied more than 1.4 percent of all agricultural land on the planet. The authors emphasized the relevance of digitalization with the constant growth of the database, which the farmer needs to process quickly and effi ciently. (Research purpose) To form the structure of the information and communication system for the «smart» crop organic farming and the database necessary for its training and ensuring its functioning. (Materials and methods) The prior research was used, as well as previously created databases and information from the existing literature. Since 2016, a multifactorial experiment with potatoes has been carried out as part of an organic crop rotation to fi ll the information base with experimental data. (Results and discussion) The structure of the information and communication system of the “smart” organic crop production has been formed. It is based on the territory digital map and agricultural crop digital models. In the course of the work of the system, we decided to make daily changes to the digital model of agricultural crops based on the incoming agroecological information, as well as to prepare recommendations on the relevant choice and use of the planned technological operations. It was found out that in a fouryear fi eld experiment, the potato yield in the control variant (without the introduction of compost and pesticides) averaged 21.7 tons per hectare, and when using compost and biofungicide Kartofi n, it increased to 26.7 tons per hectare. The authors calculated multiple linear regression equations describing the dependence of the nitrogen mineral form content in the soil in June on the sum of the active temperatures during this period and the compost dose (the correlation coeffi cient is 0.658); and the dependence of potato yield on the nitrogen mineral form content in the soil in the fi rst ten days of June and the sum of active temperatures in May-June (the correlation coeffi cient is 0.667). (Conclusions) The authors presented the structure of the information and communication system of an organic agricultural enterprise, substantiated the possibility of its full implementation as a tool that helps agricultural producers to carry out environmentally safe, competitive and effi cient organic production at a totally new level.


2021 ◽  
Vol 901 (1) ◽  
pp. 012070
Author(s):  
E P Sevostyanova ◽  
M A Sevostyanov ◽  
A P Glinushkin

Abstract All countries in the world strive not to repeat the potato famine of Ireland. Potatoes infect more than 100 pathogens, one of the most serious is late blight. In the world, the average loss of potato yield from late blight is 10-15% per year. This article briefly discusses various safe, effective and environmentally friendly methods of preventing and controlling late blight of potatoes.


2021 ◽  
Vol 901 (1) ◽  
pp. 012072
Author(s):  
M A Kuznetsova ◽  
A N Rogozhin ◽  
K V Borovsky ◽  
N V Statsyuk

Abstract In Russia, potato is the second economically important crop, which is widely cultivated not only on commercial fields, but also on numerous private plots, which produce a doubled potato yield comparing to agricultural companies. Nevertheless, during the last 30 years, the total potato production in Russia reduced by 40%. In the case of private plots, potato production reduced by even more then 50%. One of the possible reasons is that potato is difficult in cultivation and is susceptible for a number of diseases able to significantly reduce the yield quantity and quality. This paper describes a new approach to the crop protection based on the use of digital technologies to control the early and late blight of potato and to reduce the negative influence of excess fungicides on the human health and environment.


Author(s):  
Mario Coca Morante ◽  
Evelyn Coca Salazar ◽  
Javier Burgos Villegas ◽  
Nelson Tapia Ponce

AbstractIn the Bolivian Andean region, a diversity native potatoes species (Solanum spp) are cultivated. Areas where many types of native potato are grown are known as microcentres of potato genetic diversity. However, yields are low in these places, apparently related to viral infections. The incidence of the potato-affecting viruses Potato Virus X (PVX), Potato Virus Y (PVY), Potato Leaf Roll Virus (PLRV), Andean Potato Latent Virus (APLV) and Andean Potato Mottle Virus (APMoV) was examined by DAS-ELISA in microcentres of two high Andean regions of Bolivia, i.e. an Aymara culture region in the north of La Paz, and a Quechua culture region in the Dept. of Cochabamba. The relationship between viral incidence and potato yield was explored as well. The presence of all five viruses was detected in both regions, except APMoV in the Aymara region. The mean overall incidence of viral infection was greater in the Aymara than in the Quechua region. The most commonly detected viruses were PVX, PVY and APLV. Mix-infections of PVY + PVX and PVY + PLRV were most common in the Aymara region, and PVX + APLV and PVX + APMoV in the Quechua region. Potato yield was less in Aymara than in Quechua region and it was correlated to higher incidence of PVY and PVX in Aymara region. Low yields and high incidence of viral infection seems to be related to the ancestral management by planting native seed potatoes of poor quality. In conclusion, four of the five viruses sought were detected in the Aymara region, and all five in the Quechua region, although the overall incidence of viral infection was greater in the Aymara region, where the yields recorded were also lower.Resumen.En la región andina boliviana se cultivan una diversidad de especies nativas de papa (Solanum spp). Las áreas donde se cultivan muchos tipos de papa nativa se conocen como microcentros de diversidad genética de la papa. Sin embargo, los rendimientos son bajos en estos lugares, aparentemente relacionados con infecciones virales. Se examinó la incidencia de los virus que afectan a la papa, el Virus X de la Papa (PVX), Virus Y de la Papa (PVY), Virus del Rollo de hoja de Papa (PLRV), Virus Latente de la Papa Andina (APLV) y Virus moteado de la Papa Andina(APMoV) por DAS-ELISA en microcentros de dos regiones altoandinas de Bolivia, por ejemplo, una región de cultivo Aymara en el norte de La Paz y una región de cultivo Quechua en el Departamento de Cochabamba. También se exploró la relación entre la incidencia viral y el rendimiento de la papa. Se detectó la presencia de los cinco virus en ambas regiones, excepto APMoV en la región Aymara. La incidencia global media de infección viral fue mayor en la región Aymara que en la región Quechua. Los virus más comúnmente detectados fueron PVX, PVY y APLV. Las infecciones por mezcla de PVY + PVX y PVY + PLRV fueron más comunes en la región Aymara, y PVX + APLV y PVX + APMoV en la región Quechua. El rendimiento de papa fue menor enAaymara que en la región Quechua y se correlacionó con una mayor incidencia de PVY y PVX en la región Aymara. Estamos evidenciando que los bajos rendimientos y la alta incidencia de infección viral parecen estar relacionados con el manejo ancestral mediante la siembra de papas de semilla nativa de mala calidad. En conclusión, cuatro de los cinco virus buscados se detectaron en la región Aymara, y los cinco en la región Quechua, aunque la incidencia general de infección viral fue mayor en la región Aymara, donde los rendimientos registrados también fueron menores.


Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2055
Author(s):  
Chedzer-Clarc Clément ◽  
Athyna N. Cambouris ◽  
Noura Ziadi ◽  
Bernie J. Zebarth ◽  
Antoine Karam

Nitrate leaching is of great environmental concern, particularly with potatoes grown on sandy soils. This 3-year study evaluated the effect of three N rates (100, 150, and 200 kg ha−1) of single applications of polymer-coated urea (PCU) and a 75% PCU + 25% urea mixture, plus a conventional split application of 200 kg N ha−1 of a 50% ammonium sulfate + 50% calcium ammonium nitrate mixture (CONV) on NO3−-N leaching, potato yield, and N uptake under irrigated and non-irrigated conditions on a sandy soil in Quebec (Canada). Fertilizer N application increased growing season NO3−-N leaching only under irrigation. On average, irrigation increased seasonal NO3−-N leaching by 52%. Under irrigated conditions, PCU reduced NO3−-N leaching compared to PCU + urea. However, both PCU and PCU + urea significantly increased NO3−-N leaching compared to the CONV at the equivalent N rate of 200 kg N ha−1. This was attributed to the timing of soil N availability and deep-water percolation. Total (TY) and marketable (MY) yields in the CONV were similar to those in the PCU applied at the equivalent N rate of 200 kg N ha−1. Despite lower plant N uptake, PCU resulted in greater TY and MY compared to PCU + urea. Residual soil inorganic N was greater for PCU and PCU + urea compared to the CONV, providing evidence that PCU products have the potential to increase NO3−-N leaching after the growing season. In this study, PCU was an agronomically and environmentally better choice than PCU + urea. The results also showed that the efficiency of PCU to reduce seasonal NO3−-N leaching may vary according to the timing of precipitation and irrigation.


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