scholarly journals Response of potato clones to planting dates in Pokhara, Kaski, Nepal

2020 ◽  
Vol 3 (2) ◽  
pp. 175-183
Author(s):  
Saroj Adhikari ◽  
Arvind Kumar Srivastava ◽  
Mohadutta Sharma ◽  
Arjun Kumar Shrestha

A field trial was conducted to optimize the planting date and appropriate clone for ware potato production at Horticulture Research Station, Malepatan, Pokhara from October 2015 to March 2016. The trial was laid out in two factors Factorial Randomized Complete Block Design. There were nine treatments with three replications. The treatments comprised of three dates of planting (30th October, 14th and 29th November) and three potato clones (Janakdev, Lbr 40 and PRP 266264.1). The results showed that the main effects of planting dates and potato clones significantly (P<0.05) affected most growth, yield and yield attributing parameters of the crop. Interaction effect of planting dates and potato clones also significantly influenced the number of above-ground stems per plant, ground cover percentage, number of tubers per plant, number and weight of small size tuber (<25 g), weight of medium or seed size (25-50 g) tuber and large size (>50 g) tuber, number and yield of tubers per plot, and yield t/ha. The highest yield (37.05 t/ha) was obtained from 14th November planting. The clone Lbr 40 produced a higher yield (36.05t/ha). The clone PRP 266264.1 planting on 30th October planting produced significantly a higher yield (41.34t/ha). The clone Lbr 40 produced significantly highest number and weight of large size (>50 g) tuber. Number of small size (<25 g) tuber per plot or unmarketable tuber significantly increased on delayed planting.

2017 ◽  
Vol 4 (03) ◽  
Author(s):  
S. K. YADAV ◽  
S. S. LAL ◽  
T. K. BAG ◽  
A. K. SRIVASTAVA ◽  
S. T. ZODAPE

A field experiment was conducted during the summer season of 2013 at Central Potato Research Station, Shillong, Meghalayato study the effect of sea weed saps on growth and productivity of potato in the North Eastern hill region of India.The trial was laid out in randomized block design, replicated thrice, with 10 treatments. The number of shoot per plant was found to be non-significant and vary from 2.8 to 3.0. The maximum plant at harvest was recorded under application 7.5 Kappaphycus Spray + 100% RDF while lowest under 6.25% + 50% RDF.Maximum small size tuber was found with an application of 10 % Gracilaria spray + RDF which was at par with 2.5 % Kappaphycus spray + RDF and 7.5 % Gracilariaspray + RDF but significantly superior to other treatment. However, the highest medium size tube of potato was noticed under 6.25% Kappaphycus spray along with 50% recommended dose of fertilizer. Highest large size tuber was recorded with an application of 5% Kappaphycusspray + RDF followed by 2.5% Kappaphycus spray along with RDF as well as 7.5 % Gracilaria spray + RDF which was at par, but significantly superior to rest of treatment. Application of 2.5% Kappaphycus spray + 100% RDF recorded the highest productivity of potato (27.1 t/ha) followedby 100% RDF + Kappaphycus spray @ 5.0% (26.6 t/ha) which were at par with each other but significantly superior to the rest of treatments.Based on the economic yield of potato, it may be concluded that the application of 2.5 % Kappaphycus spray + 100% RDF was found to be more profitable under rainfed condition of Meghalaya


2020 ◽  
Vol 5 (1) ◽  
pp. 17-19
Author(s):  
Gaurav Adhikari ◽  
Dabit Bista ◽  
Anish Bhattarai ◽  
Hemanta Paudel

A field experiment was conducted at a private forest at Kalyanpur, Chitwan from March to January of 2018/2019 to evaluate the effect of different tuber size and nutrient source on the yield of yam (Dioscorea spp.). The experiment was laid out in a factorial Randomized Complete Block Design (factorial RCBD) with two factors i.e. tuber size viz small tuber size (<50 gm.) and large tuber size (100-150 gm.) and nutrient source viz farm yard manure, chicken manure and forest soil, replicated four times. The use of large size tubers has a significant effect on the yield of yam, higher yield (3.05 kg.) with large tuber size. Similarly, the interaction between tuber size and nutrient source was also significant on the yield. The highest yield (3.23 kg.) was made from the large size tuber (T1) and farm yard manure (M1) followed by the large size tuber (T1) and chicken manure (M2). The smallest yield (2.25 kg.) was from the interaction of small tuber size (T2) and farm yard manure (M2). Therefore, the use of a large size tuber (100-150 gm.) with farm yard manure as the nutrient source can be recommended to increase the yield of yam.


2021 ◽  
Vol 17 (2) ◽  
pp. 220-227
Author(s):  
K. Lakshmikala ◽  
B. Ramesh Babu ◽  
M. Ravindra Babu ◽  
P. Rama Devi

The present investigation “Influence of liquid and carrier based biofertilizers on growth, yield and quality of tomato (Solanum lycopersicum L.)”was laid out in randomized block design with two factors and three levels comprising of nine treatment combinations in three replications at Horticultural Research Station, Dr. Y.S.R. Horticultural University, Venkataramannagudem, West Godavari during Rabi, 2018. The application of 80 % recommended dose of fertilizers along with liquid biofertilizers resulted in significant higher differences in number of fruits per cluster (4.90), number of fruits per plant (60.0), fruit set % (98.34), fruit length (5.83 cm), fruit width (5.45 cm), average fruit weight (96.96 g), fruit yield per plant (7.27 kg), TSS (4.670 Brix), ascorbic acid content (16.53 mg/100 g), lycopene content (31.72 mg/100g) and titrable acidity (0.53 %) when compared to other treatment combinations.


Author(s):  
Totong Siwanto ◽  
Sugiyanta , ◽  
Maya Melati

ABSTRACT<br />Application of organic fertilizer into the soil is designated as a source of macro, micro nutrients and organic acids; it also acts as soil ameliorant that improve physical, chemical and biological properties of soil. Application of high rates organic fertilizer has a constraint namely the availability and ease of application. Therefore, it is necessary to learn the use of organic fertilizer with low rates to improve the efficiency of chemical fertilizers. This research was aimed to study the effect of organic and inorganic fertilizers on growth and yield of paddy rice, as well as the efficiency of N, P, K inorganic fertilizer. Field experiment was conducted at Sawah Baru Research Station, University Farm IPB, Bogor, West Java from September to December 2013. The experiment used Randomized Block Design consisted of two factors: rates of organic fertilizer (0, 250, 500, 750, and 1,000 kg ha-1), and rates of inorganic fertilizer (0, 100, 200, 300, and 400 kg ha-1). The results suggested that the application of 1,000 kg organic fertilizer ha-1 + 400 kg inorganic fertilizer ha-1 did not show significant interaction. Application of organic fertilizer alone up to 1,000 kg ha-1 resulted in low growth and yield. Increasing rates of  application up to 400 kg inorganic fertilizer ha-1 increased the growth and yield of paddy rice. The highest N efficiency was 89.19% at a rate of 500 kg organic fertilizer ha-1 + 200 kg inorganic fertilizer ha-1, whereas the highest efficiency of P and K, respectively were 69.55% and 92.52% at a rate of 750 kg organic fertilizer ha-1 + 300 kg inorganic fertilizer ha-1.<br />Keywords: NPK, organic fertilizer, paddy rice


2021 ◽  
Vol 904 (1) ◽  
pp. 012066
Author(s):  
Y A Al-Janabi ◽  
N M Abood ◽  
M I Hamdan

Abstract The experiment was carried out according to the randomized complete block design (R.C.B.D) and the arrangement of split-split plot with three replications, at the Field Crops Research Station of the Agricultural Research Department - Abu Ghraib during the spring season for the years 2019 and 2020. With the aim of studying the effect of amino acids, planting dates and their effect on some of the yield characteristics and its components for three varieties of maize in the spring season. Planting dates (March 15, March 25 and April 5) occupied the main plots, while amino acids and the control treatment (proline, arginine, and distilled water) occupied the sub-plot, whereas the varieties (Rabi, Baghdad 3 and Fajr 1) occupied the sub-sub-plot, and the most important results were summarized as follows:The two cultivars, Rabi and Fajr-1, achieved a significant increase in most of the yield characteristics and its components for the seasons. The addition of the amino acid proline also led to a significant increase in most of the studied traits (the number of grains in ear, weight of 500 grains, total grain and biological yield, and harvest index), planting dates also have a significant effect on most of the studied traits. The first date (15/3) recorded increase in the number of grains per ear, the weight of 500 grams, and the grain and biological yield. The plants of the Rabi variety when cultivated on March 15 th and sprayed with the amino acid proline achieved the highest average for the grain yield, which reached 7.48 ton. ha-1 for spring 2019.


2021 ◽  
Author(s):  
Boomiraj Kovilpillai ◽  
Sethupathi Nedumaran ◽  
Sudhakaran Mani ◽  
Jayabalakrishnan Raja Mani ◽  
Sritharan Natarajan ◽  
...  

Abstract An experiment was conducted at woodhouse farm, Horticultural Research Station, Ooty, in the period of October 2017 to March 2018, to quantify the impact of elevated ozone and ozone protectants spray on plant growth, nutrients, biochemical and yield properties of turnip crop in a factorial completely randomized block design replicated thrice. The elevated ozone exposure significantly reduces the plant height, tuber size, tuber weight, Chlorophyll ‘a’, Chlorophyll ‘b’, Total chlorophyll, total nitrogen, total potassium, total Manganese, Iron, Zinc, Copper inturnip. Meanwhile, the elevated ozone exposure significantly increased the total phosphorous, catalase and peroxide activity inturnip. However, ozone protectants played a major role to nullify the tropospheric ozoneeffect on growth, physiology, development and yield of turnip and among them panchagavya performed well followed by neem oil and ascorbicacid.


2019 ◽  
Vol 17 (2) ◽  
pp. 200-205
Author(s):  
Md. Murad Hossan Chowdhury ◽  
Md. Amirul Islam ◽  
Md. Atikuzzamman ◽  
Maria Akter Sathi ◽  
Sharmin Jahan

A field experiment was carried out at the Horticulture Farm, Bangladesh Agricultural University, Mymensingh during the period from November 2011 to February 2012 to study the effect of seed tuber size on the yield and quality of seven accessions of potato. The experiment was laid out in the Randomized Complete Block Design (RCBD) with three replications. This piece of research consisted of two factors namely, size of seed tubers i.e. three different size of seed tuber i.e. small (10-20 g), medium (21-30 g) and large (31-40 g) and seven accessions of potato i.e. AC10064, AC10076, AC10097, AC10109, AC10123, AC10190 and one check variety Cardinal. The size of individual plot was 1.8 m × 1.2 m. Two adjacent unit plots and blocks were separated by 0.5 m and 0.5 m. A spacing of 60 cm × 30 cm was also used in terms of planting. Data on different yield contributing characters and yield were recorded. The tallest plants were produced by the large size of seed tuber accession AC10109 (120.25 cm) which also took minimum time (6.10 days) to germinate and possessed maximum stem diameter (0.95 cm) while small seed tuber of Cardinal required maximum days (10.23 days) along with shortest height (60.22 cm) as well as stem diameter (0.65 cm). The large size seed tuber of accession AC10109 gave maximum number of main stems/hill (6.4) and small size of seed tuber variety Cardinal gave minimum number of main stems/hill (2.96). The large size of seed tuber accession AC10109 produced maximum number of compound leaves/hill (64.80) and the small size of seed tuber Cardinal produced minimum number of compound leaves/hill (35.74). In terms of yield character large size of seed tuber of AC10109 accession exhibited highest results in tuber number 9.60 with the average diameter of tubers (5.86 cm) and yield was 10.42 t/ha. The accessions differed significantly with respect to all the plant characters studied. J. Bangladesh Agril. Univ. 17(2): 200–205, June 2019


Author(s):  
K. V. Anitha ◽  
T. Chikkaramappa ◽  
P. K. Basavaraja ◽  
N. B. Prakash ◽  
K. Murali ◽  
...  

A field experiment was conducted at Agricultural Research Station, Baljigapade, Chikkaballapur taluk and district, which comes under the Eastern Dry Zone of Karnataka during Kharif season 2018. The experimental plot in the field was laid out following a randomized complete block design (RCBD) with fourteen treatments and three replications. The treatments included two levels of N and P2O5 (20 and 30 kg ha-1) and three levels of K2O (10,20 and 30 kg ha-1). Farmyard manure was applied at the rate of 6.25 t ha-1 to all the treatments except absolute control. Results indicated that application of 30 kg N+30 kg P2O5+30 kg K2O ha-1 with Farm Yard Manure (FYM) increased the micronutrient availability in soil N (150.29 kg ha-1), P2O5 (17.60 kg ha-1), K2O (160.84 kg ha-1). Application of FYM @ 6.25 t ha-1+30 kg N+20 kg P2O5 +20 kg K2O ha-1 significantly increased growth, yield, macronutrient content and uptake by brown top millet grain and straw against absolute control. The grain yield of browntop millet was increased by 61.46 percent in T10 and 59.07 percent in T9 as compared to the absolute control.


CORD ◽  
2009 ◽  
Vol 25 (2) ◽  
pp. 11
Author(s):  
Luiz Gonzaga Bione Ferraz ◽  
Ademar Barros da Silva ◽  
José Nunes Filho ◽  
Antonio Raimundo de Sousa ◽  
Venézio Felipe dos Santos

High quantities of mineral fertilizers (MF) are required for good coconut seedling production, whose up dated recommendation is 232 grams per seedling. The objective of this work was to assess the substitution of the MF by organic fertilizer as sugar-cane filter cake (SCFC) on coconut seedlings in polybag. The SCFC is an organic residue from sugar-cane manufacturing composed of various chemical elements, as for instance: nitrogen, phosphorus, potassium, calcium and magnesium. The experiment was carried out at the Itapirema Research Station, Goiana, Pernambuco State, Brazil, in a randomized complete block design, with factorial disposition 52, replicated three times, with six tall coconut seedlings per plot. The treatments were the combinations of five doses of MF (in g seedling-1): 46.25; 92.50; 138.75; 185.00 and control, using urea, simple superphosphate and potassium chloride at the proportion of 1:2:3, respectively, and five doses of SCFC (in kg polybag-1): 0.5; 1.0; 1.5; 2.0 and control. Eight months after young coconut seedlings replacement to the polybags the following parameters were measured: collar girth (CG), leaf area (LA), number of live leaves (NL) and plant height (PH). For leaf nutritional diagnosis and growing media chemical and physical analyses, samples were collected. There was significance for the two factors, individually, to all parameters. The trend analysis revealed linear, quadratic and cubic responses, according to the studied character. The mixture of 0.5 kg of SCFC polybag-1 plus 46.25 g of the MF was sufficient for obtaining seedlings of excellent quality and promoting a fertilizers economy around 80%. According to other results from this research, the number of seedlings per plot and the critical level of nutrients in the leaf of coconut seedlings should be reviewed.


2017 ◽  
Vol 7 (2) ◽  
pp. 1
Author(s):  
Tiara Septirosya ◽  
Roedhy Poerwanto ◽  
Abdul Qadir

Borneo Prima Mandarin (Citrus reticulata cv Borneo Prima) is a new local commodity that grown in lowland but has an interesting orange skin. As a new commodity, Borneo Prima Mandarin has to be developed in order to reduce citrus import. The research was conducted in lowland area (250 m above sea level) IPB research station, Sindang Barang, Bogor from February 2014 to February 2015. The aim of this research was to observe the effect of phosphorus and potassium (PK) fertilizer and pruning on the growth and performance of the plants. This research used Randomize Complete Block Design (RCBD) with two factors. The first factor was aplication of PK fertilizer (15 g P+ 10 g K, 15 g P+ 15 g K, 20 g P+10 g K, 20 g P+15 g K per plant) and the second factor was pruning form (without pruning, open center pruning and hedge pruning). The result showed that the combination of phosporus and potassium fertilizer just gave a significant effect to number of shoot. The highest number of new shoots formed by fertilizing 15 g P+10 g K per tree per application. Pruning treatments had significant effect to plant architecture (i.e reduce plant height, land occupation). Open center pruning and hedge pruning made the crown more open that can increase the light interception so that increase the rate of photosynthesis.


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