scholarly journals Rendimiento de cultivares de papa (Solanum tuberosum L.) amarillos precoces del grupo Phureja

2018 ◽  
Vol 29 (3) ◽  
pp. 639
Author(s):  
Juan F. Seminario-Cunya ◽  
Roiser Villanueva-Guevara ◽  
Misael H. Valdez-Yopla

The group Phureja (Solanum tuberosum L.) has been little studied in Peru, despite its culinary, nutritional and industrial quality and the risk of erosion to which it is subjected in recent decades. The objective of this research was to evaluate the total and commercial yield of tubers of fifteen potato cultivars (Solanum tuberosum, Phureja group). Traditional, yellow, and early cultivars were evaluated from Cajamarca region, Peru, to identify the most productive cultivars within the study group. The work was carried out on a plot of the Silvoagricultural Service of the Universidad Nacional de Cajamarca: 7 ° 10`LS and 78 ° 30’ LW, 2670 masl, 14.7 °C average annual temperature, 64.5% relative humidity and 651 mm of annual precipitation. Seeding was carried out at 0.90 m and 0.40 m between rows and between plants, respectively; in completely randomized block design, with three repetitions. Plant height, number of stems, number and total weight of tubers, number and weight of tubers according to categories, specific gravity, dry matter of tubers and foliage, and harvest index were evaluated. Significant statistical differences were found between cultivars for a total number of tubers, number of commercial tubers, a weight of commercial tubers, plant height, number of stems, dry matter of the tubers and harvest index. The best cultivars in tuber yield were Blanca amarilla (27.8 t/ha), Limeña huachuma (27.4 t/ha), Llanqueja (25.0 t/ha), Amarilla redonda (23.3 t/ha) and Piña amarilla (21.8 t/ha).

Author(s):  
João A. da Silva ◽  
Sérgio L. R. Donato ◽  
Paulo E. R. Donato ◽  
Evilasio dos S. Souza ◽  
Milton C. Padilha Júnior ◽  
...  

ABSTRACT The objective was to evaluate the effect of different spacings and mineral fertilizations on cactus pear growth and production in a randomized block design, with three replicates, in a 3 x 4 factorial scheme: three spacings, 1.00 x 0.50 m, 2.00 x 0.25 m and 3.00 x 1.00 x 0.25 m, and four fertilizations, 000-000-000, 000-150-000, 200-150-000 and 200-150-100 kg ha-1 of N, P2O5 and K2O, respectively. Plant growth was evaluated between 90 and 390 days and production and growth were evaluated at 620 days after planting. There were significant interactions between spacing and fertilization for plant height, number of cladodes and cladode area index from 90 to 390 days and for production of fresh and dry matter at 620 days after planting. Spacing influenced cladode area index, while fertilization influenced plant height, number of cladodes and cladode area index at 620 days after planting. Plant height showed cubic effect for the days after planting. Number of cladodes and cladode area index were dependent on spacing, fertilization and plant age, and fitted to cubic models. The best results of growth and production of fresh and dry matter are associated with NPK and NP fertilizations and the spacing of 1.00 x 0.50 m.


Agrologia ◽  
2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Reginawanti Hindersah ◽  
Agnia Nabila ◽  
Ani Yuniarti

Potatoes (Solanum tuberosum L.) which are comonly grown  in the highland with Andisols require organic and inorganic fertilizers to maintain soil health  and increase yield. The purpose of field experiment  was to obtain information on the effect of vermicompost with and without NPK fertilizer  on soil acidity,  soil phosphor (P) availability and P uptake in potatoes shoot; as well as yield and quality of tuber. The experimental design was a randomized block design with eight treatments and three replication. The treatment consisted of a combination of vermicompost doses (5 and 10 t/ha)  with NPK fertilizer doses (0; 0.5 t/ha and 1 t/ha). The two control treatments were 1) without fertilizer and 2) the method of fertilizing local farmers included 10 t /ha chicken manure and 1 t/ha NPK fertilizer. This experiment verified  that vermicompost and NPK fertilizer increased plant height as well as soil P availability and acidity compared to those of control. Vermicompost has not yet substitute chicken manure to obtain the same tuber production although the percentage of marketable tuber was quite similar.  Keywords : Andisols, NPK Fertilizer, Phosphorus, Potato, Vermicompost.


SoilREns ◽  
2016 ◽  
Vol 14 (2) ◽  
Author(s):  
Windy Amorita ◽  
Anne Nurbaity ◽  
Diyan Herdiyantoro

The productivity of potatoes in Indonesia is relatively low and unstable caused by unsuitable enviromental and soil conditions and bad cultivation system. This research was conducted to study the effect of NPK fertilizer dosages and soil order to soluble K, K Uptake, and yield of seed potatoes (Solanum tuberosum L.). The experiment design used a factorial randomized block design with two factors and three replication. The first factor was NPK fertilizer dosages with five levels (0, 25, 50, 75, 100% recomendation dosages) and the second factor was soil orders with two levels (Andisols and Inceptisols). The results of experiment showed that the interaction effect between NPK fertilizer dosages and soil orders had significantly effect to soluble K and K Uptake. There were independent effect of NPK dosages to diameter of potatoes tuber and independent effect of soils order to yield of seed potatoes. Andisols with 25% NPK and Inceptisols with 50% NPK were the best combination treatment to increase soluble K while treatment Inceptisols with 25% NPK was the best combination treatment to increase K Uptake. Dosages of 25% NPK was the best treatment to increase diameter of potatoes tuber while Inceptisols was the best treatment to increase yield of seed potatoes.Keywords : NPK Fertilizer Dosages, Andisols, Inceptisols, Potassium, Potatoes


Author(s):  
Eddy Diego Gutiérrez Gonzales ◽  
Octavio Mártir Coria Garcia ◽  
Verónica Elisa Condori Murga

In the Central Altiplano of Bolivia, the production of forage oats is important for the feeding of herbivorous livestock; however, the yields obtained at the producer level register low averages in dry matter. The objective was to evaluate the agronomic performance of three oat varieties, with levels of ground coca leaf as green manure, at the Kallutaca Experimental Center in the department of La Paz. A randomized block design was applied with a divided plot arrangement with four replications. The factors were oat varieties (Aguila, Gaviota and Texas) and levels of ground coca (0, 30 and 60 t ha-1), with variables days to emergence, number of tillers, plant height and dry matter yield. The results at days to emergence show differences in time 60 and 0 t ha-1 with 14 and 11 days. In relation to the number of tillers per plant, in varieties the behavior is similar with an average of 7 tillers; in relation to interaction, the values show significance. In plant height, the means recorded for the Texas variety were 137.10 cm, in the interaction the values were equal. In dry matter, there were significant differences in 60 and 30 t ha-1 with 16 427.27 and 15 281.82 kgDM ha-1, the Gaviota variety with 14 706.06 kgDM ha-1. The treatments influenced the agronomic behavior of the variables studied, the levels of green manure affected oat yield, mainly the number of tillers, which in turn affected the dry matter yield, finally the oat varieties have a differential behavior with the change in the levels of green manure.


2019 ◽  
Vol 6 (03) ◽  
Author(s):  
TS MISHRA ◽  
NK MISHRA ◽  
VK MISHRA ◽  
US MISHRA ◽  
HM SINGH

A field experiment was conducted at Allahabad in order to evaluate the performance of different Potato (Solanum tuberosum L.) varieties under the climatic conditions of Northern Plains of India.The experiment was carried out for two consecutive years i.e., during 2015-16 and 2016-17to assess the morphology, physiological behaviour of these potato varieties/strains under a similar set of agro-climatic conditions. All the potato varieties/strainsviz.E-4486,JI-5857, JI-1804, JI-1808, JG-224, JG-657,JE-808, JF-110, JF-27, JF-547,JG-1134, Fr/B-10, JH-222, EM/H- 1601,JF-4864, JF-5106, JF-4915,JH-49,JH-516,JI-5871,FR-B-4,FR-B-4,FR/B-21,FR.B-105,G-2524,Kufri Sheetman, Kufri Chandramukhi, Kufri Bahar, Kufri Lalima, Kufri Badshah, Kufri Jyoti, Kufri Alankar and Kufri Sinduri were replicated thrice under randomized block design. Important information on different aspects like tuber sprouting, plant growth and development and yield was gathered in all the treatments.Potato variety JH-222 was the best performer followed by JG-224, E-4486, JF-547, Kufri Bahar, FR/B-10, Kufri Badshah, JF-110, Kufri Chandramukhi, EM/H-1601, Kufri Alankar, JF-27, JG-1334 and JE-808.


Author(s):  
R. K. Dubey ◽  
J. K. Kushwaha ◽  
A. K. Pandey ◽  
V. Singh ◽  
A. S. Mailappa ◽  
...  

Present study was carried out to screen the cowpea genotypes and to determine the effect of different level of aluminium on morpho-physiological, growth, yield and quality attributes. Twenty cowpea genotypes with four aluminium levels i.e. 0, 20, 40, 60 ppm in three replications was investigated in factorial complete randomized block design. Individual main effect and their interaction effects were studied for plant height at weekly interval, biomass, number of nodule per plant, root length, shoot length, dry matter of root, shoot, leaf, total dry matter, number of pod per plant, pod weight, yield and seed protein content. Cowpea genotypes exhibited significant differences for all 13 observed traits. Aluminium treatment expressed significant differences for all the attributes under study except biomass per plant. However, interaction effect was found to be significant for all studied characters except plant height at all stages. Among the aluminium treatments; observed traits were performing better at 20 ppm of Al, whereas, pod yield and protein content were best under the control.


Author(s):  
Sidnei R. de Marchi ◽  
Dagoberto Martins ◽  
Neumárcio V. Costa

ABSTRACT This study aimed to evaluate the effect of sequential applications of plant regulators on growth and seedhead emergence of Bahiagrass (Paspalum notatum). The study was carried out on a 15-month-old lawn, in a randomized block design, with four replicates. The treatments consisted of the following plant-growth regulators and dose: trinexapac-ethyl in sequential application of 113 + 113, 226 + 113, 226 + 226, 452 + 113, 452 + 226, 452 + 452 g a.i. ha-1; trinexapac-ethyl in single application of 678 and 904 g a.i. ha-1; and prohexadione-calcium in sequential application of 100 + 100 and 200 + 200 g a.i. ha-1, besides a control, with no application. The effects of treatments were evaluated based on visual injury, plant height, height and number of flower rachises and total dry matter production of clippings. Sequential applications of prohexadione-calcium at 100 + 100 or 200 + 200 g a.i. ha-1 were efficient to reduce plant height, but did not show efficacy to reduce the number and height of seedheads or the total dry matter of clippings of Bahiagrass. However, Bahiagrass lawns can be managed by trinexapac-ethyl sequential applications of 452 + 452 g a.i. ha-1 or single application of 904 g a.i. ha-1, with reduction in the need for mowing for a period of up to 113 days after application, without causing any deleterious effect on the visual aspect of the lawn.


2008 ◽  
Vol 13 (3) ◽  
pp. 217-224
Author(s):  
. Nurmayulis ◽  
. Maryati

A research was conducted to study response of potato (Solanum tuberosum L.) plant to the application of  fermented organic matter (‘porasi’) (0, 7.5, 15.0, and 22.5 t ha-1), without or with inoculation of Azospirillum sp., and N fertilizer (0, 86, 172, and 258 kg ha-1 N) and also to determine optimal rate of application of ‘porasi’ and N fertilizer without or with inoculant Azospirillum sp.  Field experiments were carried out in Cisarua, Lembang West Java, from June 2003 to Nov. 2003.  The experiments were done in a Randomized Block Design of factorial pattern of three factors, were replicated three times.  Results of the experiments showed that: (1) N contents were higher as rates of ‘porasi’ and N fertilizer increased and with inoculation of Azospirillum sp.,  whereas the highest N concentration was obtained due to application of 22.5 t ha-1 ‘porasi’ with inoculation of  Azospirillum sp. and application of N fertilizer of 258 kg ha-1, and (2) the optimum rate of  ‘porasi’ and N fertilizer without inoculation of Azospirillum sp. was 15.287 t ha-1 and 228.519 kg ha-1 N, respectively, to obtain maximum yield of 6.028 kg per plot or 25.117 t ha-1, whereas with inoculation of  Azospirillum sp. the optimum rate of ‘porasi’ and N fertilizer was 16.464 t ha-1 and 190.110 kg ha-1 N,  respectively, with maximum yield of 6.493  kg per plot or 27.054  t ha-1.


Author(s):  
Mahender Pal ◽  
Vijay Kumar ◽  
A. P. Singh ◽  
R. S. Singh ◽  
M. D. Ojha ◽  
...  

The experiment was laid out in Factorial Randomized Block design assigning time of planting (Factor A), planting geometry (Factor B) with four replications to assess the effect of date of planting and planting geometry on growth and yield of Kalmegh cv. CIM Megha. The experiment was conducted at Experimental farm, Nalanda College of Horticulture, Noorsarai, Nalanda (Bihar Agricultural University, Sabour) in the year 2013-14 and 2014-15. Factor A consisted of three time of planting viz., 15th May, 01st June and 15th June and factor B consisted of two levels of spacing S1 (30 x15 cm) and S2 (30 x20 cm). Pooled data on different growth and yield characters revealed 15th June as  best time of planting of Kalmegh and proclaimed highest values for plant height (75.46 cm), Plant girth (7.69 mm), no. of secondary branches, no. of leaves per plant and total dry matter yield (31.75 q/ha) . on the other hand spacing level of  S2 (30x20 cm) also recorded highest values for plant height (68.75 cm), plant girth (7.75 mm), no. of secondary branched/plant, no. of leaves/plant and total dry matter yield (27.38 q/ha). The treatment combination of 15th June as time of planting and plant spacing of 30 x20 cm found best for planting of Kalmegh in the growing conditions of the Nalanda. It was followed by planting time 15th June and plant spacing of 30x 15 cm for higher growth and yield of Kalmegh.


2019 ◽  
Vol 1 (2) ◽  
pp. 44
Author(s):  
Faisal Haryanto Putra ◽  
Erny Ishartati ◽  
Syarief Husain

Potato plants are propagated vegetatively with tubers. The difficulty of getting potato seeds with tubers is an obstacle in the supply of potato seeds, to overcome these obstacles vegetative propagation with cuttings can be a solution for the supply of potato seeds. This research used a factorial Randomized Block Design (RBD). The first factor is the type of Radix Up consisting of 4 levels, namely Z0 (control), Z1 (Radix Up 1), Z2 (Radix Up 2), and Z3 (Radix Up 3), the second factor is the number of segments consisting of 3 levels namely D1 (number of segment 1), D2 (number of segment 2), and D3 (number of segment 3). Observation variables included: when the roots appeared, plant height, number of leaves, and stem diameter. The results showed that there was an interaction between Radix Up types and the number of segments on the growth of potato shoot cuttings when the roots appeared, but there were no interactions on other observational variables. The Z1D3 treatment (Radix Up 1 and segment number 3) gives the fastest average value, which is the average when the root appears 4.33 days.


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