scholarly journals Onion Yield, Quality, and Storage Responses to Phosphorus and Potassium on a High-phosphorus, Low-pH Muck Soil: Maybe K, but Hold the P

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 445C-445
Author(s):  
W.B. Evans
Keyword(s):  
Total Yield ◽  
Application Rate ◽  
Low Ph ◽  
Marketable Yield ◽  
Muck Soil ◽  
K Fertilizer ◽  
Yield Quality ◽  
Phosphorus And Potassium ◽  
And Storage ◽  
Storage Characteristics

The influences of preplant, broadcast P and K fertilizer on long-day yellow onion yield, quality, and storage characteristics were evaluated in 1995 and 1996 on a low-pH muck soil in north-central Ohio. Recommendations based on preseason soil tests indicated the crops would benefit from supplemental K, but not P, in 1995 and also in 1996. In both seasons, broadcast P rates were 0, 67, and 138 kg·ha–1 P2O5; K rates were 0, 168 and 336 kg·ha of K2O. The 3 × 3 factorial of P and K treatments was replicated four times. Phosphorus rate did not significantly influence yield or quality in either 1995 or 1996. Total yield, percent marketable yield, and the concentration of K in the bulbs increased linearly with K in 1995, even though the highest K application rate exceeded the rate recommended by soil testing by more than 100 kg·ha–1. Mean bulb size did not differ significantly among K rates. Potassium rate did not affect yield or quality in 1996, a drier year than 1995. After 5 months of commercial storage, onions from all nine treatments harvested in 1995 had similar amounts of rotten or sprouted bulbs, and weight loss. These results support the idea that P applications can be reduced or eliminated on high-P muck soils without reducing yield or quality. Onion response to applied K requires additional study before firm recommendations can be made.

scholarly journals Yield, Quality, and Storage Characteristics of Onion Cultivars in the Columbia Basin of Washington in 2012–14

2016 ◽  
Vol 26 (2) ◽  
pp. 230-243 ◽  
Author(s):  
Carrie H. Wohleb ◽  
Timothy D. Waters
Keyword(s):  
Allium Cepa ◽  
Good Choice ◽  
Cultivar Differences ◽  
Columbia Basin ◽  
Size Category ◽  
High Incidence ◽  
Yield Quality ◽  
Bacterial Rot ◽  
And Storage ◽  
Storage Characteristics

An onion (Allium cepa) cultivar trial is conducted in the Columbia Basin of Washington every year. The trial helps onion growers, packers, processors, and seed companies compare cultivars and identify those most suited to their operations. This report evaluates 54 onion cultivars that were in the trials 2 years or more from 2012 to 2014. Marketable yields of cultivars averaged 764 to 1314 cwt/acre. ‘TTA-747’, ‘Scout’, ‘SV6672NW’, ‘Montero’, ‘XP07716000’, and ‘SV4058NV’ had the highest yields. All cultivars produced more jumbo-sized (3 to 4 inches) bulbs compared with any other size category, but those with the largest percentages of jumbo bulbs were Utrero, Gunnison, and Sedona. ‘Scorpion’, ‘Ruby Ring’, and ‘Purple Haze’ had the largest percentages of medium (2.25 to 3 inches) bulbs, and ‘Montero’ and ‘Ovation’ had the largest combined percentages of jumbo and colossal (>4 inches) bulbs. Cultivar differences were evident in the 2012 and 2014 trials when many of the onions flowered (bolted). Cultivars averaged 0.0 to 15.5 bolted onions per plot when 2012 and 2014 results were combined. ‘Trekker’, ‘Highlander’, ‘Trailblazer’, ‘Ruby Ring’, ‘NUN8003ON’, and ‘Milestone’ had the fewest bolted onions. Cultivar differences were also apparent when several aspects of bulb quality were evaluated after 4 months in storage. ‘Utrero’, ‘Trekker’, ‘NUN7202ON’, and ‘Tamara’ had the most uniformly shaped bulbs. Bulbs of ‘Crockett’, ‘Legend’, and ‘Utrero’ had the most complete skins. ‘Crockett’, ‘Talon’, ‘Utrero’, ‘Legend’, ‘Gunnison’, and ‘Tamara’ had the firmest bulbs. Only 14 of 54 cultivars averaged more than 74% functionally single-centered bulbs. ‘NUN7202ON’, ‘Arcero’, ‘Joaquin’, and ‘Utrero’ had the largest percentages of bulbs with single centers or small multiple centers. There were more rots caused by bacteria (Enterobacter sp.) in bulbs produced in the 2014 trial than in 2012 and 2013, probably due to a high incidence of internal dry scale in 2014. Incidence of bacterial rot in cultivars was not significantly different in 2014, but there were some cultivar differences in 2012 and 2013. Incidence of fungal neck rot (caused by Botrytis sp.) in these trials was low and there were no significant cultivar differences. The results of these trials demonstrate that many new and advanced experimental cultivars have attributes that could make them a good choice for onion growers in the Columbia Basin.

scholarly journals Juneberry Cultivar Evaluation in North Dakota

2015 ◽  
Vol 25 (6) ◽  
pp. 747-751
Author(s):  
Naa Korkoi Ardayfio ◽  
Harlene Hatterman-Valenti
Keyword(s):  
North Dakota ◽  
Fruit Ripening ◽  
Total Yield ◽  
Plant Size ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Marketable Yield ◽  
Yield Quality ◽  
One Year ◽  
Solids Content

A juneberry (Amelanchier alnifolia) cultivar trial was conducted to evaluate fruit yield, quality, and other characteristics for juneberry cultivars and a native biotype. One-year old micropropagated material was transplanted and established in North Dakota in 2004. The native biotype is available as a conservation plant from Towner State Nursery (Towner, ND) and was included as a readily available juneberry for producers. Fruit diameter, soluble solids content, yield (total and marketable), and plant size measurements were taken during the 2010 and 2011 season. ‘Martin’, the native biotype, ‘Parkhill’, ‘Pembina’, ‘Regent’, and ‘Thiessen’ produced the highest total yield in 2010, whereas ‘Parkhill’ had the highest total yield in 2011, followed by ‘Thiessen’ and then ‘Martin’. Cultivars Martin, Parkhill, and Thiessen produced the highest marketable yield over the 2-year study. ‘Martin’ and ‘Thiessen’ fruit were larger and heavier than the rest of the cultivars. The largest plants were ‘Martin’, ‘Parkhill’, ‘Regent’, and ‘Thiessen’. Soluble solids concentrations were similar among all cultivars. Cultivars Martin or Thiessen should be recommended to commercial producers wanting a high yielding cultivar with uniform fruit ripening, whereas Parkhill should be recommended to producers with a you-pick operation wanting a high yielding cultivar with an extended fruit ripening period.

scholarly journals 280 Production of Carrots Suitable for Cut-and-peel Processing in Ontario, Canada

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 439D-439
Author(s):  
M.R. McDonald ◽  
S. Janse ◽  
K. Vaner Kooi
Keyword(s):  
Organic Matter ◽  
Mineral Soil ◽  
Total Yield ◽  
Seeding Rate ◽  
Marketable Yield ◽  
Muck Soil ◽  
Length Width ◽  
Plant Stand ◽  
Growing Conditions ◽  
New Industry

Production of carrots for cut-and-peel processing has increased to >400 ha in the past 5 years in the Holland/Bradford Marsh area (44°5' N, 79°35' W) of Ontario. To provide carrots best suited for the new industry, growers needed information on the best cultivars and production practices. Trials with cultivars from four seed companies were conducted on muck soil (60% organic matter, pH 6.0) for 3 years (1997-1999) and on mineral soil (5% organic matter, pH 7.2) for 2 years (1998-1999). Carrots were seeded on raised beds at three seeding rates—25, 40, and 55 per foot—at two or three seeding dates and were harvested at two or three dates at 15-day intervals. Plant stand was always less than the seeded rate because of hot, dry growing conditions during the years of the trials. Carrots were hand-harvested and assessed for total yield, marketable yield, oversized carrots (>0.75 in diam.), length, width, and uniformity. The seeding rate of 55 seeds/ft and harvest 100 to 110 days after seeding resulted in the highest yield of carrots suited for cut-and-peel processing. Cultivar HM03 consistently had the highest score for quality, but low yields. Other cultivars, such as `Indiana', `Caro Pride', and `Vita Treat', also had high scores for quality. Carrots grown on mineral soil were longer than those grown on muck soil; however, yields were higher for the muck-grown carrots.

Effect of potassium, calcium and magnesium on yield, quality, and storage property of banana

2010 ◽  
Vol 18 (2) ◽  
pp. 290-294
Author(s):  
Bao-Mei YANG ◽  
Jin-Quan LI ◽  
Li-Xian YAO ◽  
Guo-Liang LI ◽  
Zhao-Huan HE ◽  
...  
Keyword(s):  
Yield Quality ◽  
Calcium And Magnesium ◽  
And Storage ◽  
Storage Property

scholarly journals Phytotoxic effects of invasive Ageratina adenophora on two native subtropical shrubs in Nepal

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tej Bahadur Darji ◽  
Barsha Adhikari ◽  
Seeta Pathak ◽  
Shristi Neupane ◽  
Lal B. Thapa ◽  
...  
Keyword(s):  
Low Ph ◽  
Potential Mechanism ◽  
Phytotoxic Effects ◽  
Seedling Length ◽  
Ageratina Adenophora ◽  
Ir Analysis ◽  
Allelopathic Interference ◽  
Phosphorus And Potassium ◽  
Native Shrubs ◽  
Nitrogen Phosphorus

AbstractThe response of native plants to allelopathic interference of invasive species may differ from species to species. In this study, the phytotoxic effects of Ageratina adenophora were tested on two native shrubs (Osbeckia stellata and Elsholtzia blanda) of Nepal. Both the shrubs were grown in pots under treatments of A. adenophora fresh leaves and root leachates, and litter. Then, the seedling length and biomass were compared among the treatments. The results show that A. adenophora litter has stimulatory effects but the leachates from fresh leaves and root are phytotoxic to the growth and development of native shrubs. Infrared Spectroscopy (IR) analysis confirmed the presence of O–H (Hydroxyl), N–H (Amines), C≡C (Alkynes), and C–H stretching (Aromatic) or C–O–C stretching (Ethers) in the leachates representing harmful allelochemicals. The invaded soil by A. adenophora had low pH and a high amount of organic matter, total nitrogen, phosphorus, and potassium than the uninvaded soil. The results indicate that the native O. stellata and E. blanda are harmed by A. adenophora in nature by leaching of allelochemicals and probably by reducing the soil pH. Overall, this study has provided valuable insights regarding the effects of A. adenophora invasion on native shrubs and revealing the potential mechanism of its invasiveness.

LAMB’S-QUARTERS INTERFERENCE WITH DIRECT SEEDED BROCCOLI

1990 ◽  
Vol 70 (4) ◽  
pp. 1215-1221 ◽  
Author(s):  
IRIS BITTERLICH ◽  
MAHESH K. UPADHYAYA
Keyword(s):  
Brassica Oleracea ◽  
Field Experiments ◽  
Chenopodium Album ◽  
Total Yield ◽  
Growth And Yield ◽  
Marketable Yield ◽  
Weed Density ◽  
Weed Interference ◽  
Lamb’S Quarters ◽  
Cole Crop

Field experiments were conducted in 1987 and 1988 to study the effect of lamb’s-quarters (Chenopodium album L.) interference on broccoli (Brassica oleracea L. var. botrytis ’Emperor’) growth and yield. Broccoli growth was initially affected by weed interference at 28–36 d after seeding. Generally, the negative effect of weed interference on broccoli growth increased with increasing weed density and time after seeding. Interference by 15 lamb’s-quarters plants m−2 reduced the biomass of broccoli plants by 71–73% compared to the weed-free control at 57–58 d after seeding. Weed density-crop yield relationship curves showed that one lamb’s-quarters plant m−2 decreased total yield by 18–20% and marketable yield by 22–37%. Lamb’s-quarters reduced the total yield per plot by decreasing the average head weight of broccoli. The number of heads per plot was not affected. Weed interference also reduced the weight of heads classified as marketable (> 10 cm across). However, in 1987 more heads failed to reach a marketable size which resulted in a much smaller marketable yield than in 1988.Key words: Brassica oleracea var. botrytis, broccoli, Chenopodium album L., weed density, weed interference, cole crop

scholarly journals Associations between morphological and agronomic characteristics in garlic crop

2019 ◽  
Vol 37 (2) ◽  
pp. 204-209
Author(s):  
Valter C de Andrade Júnior ◽  
Amanda G Guimarães ◽  
Tiago D Firme ◽  
Aline Aparecida A Costa ◽  
Márcia Regina da Costa ◽  
...  
Keyword(s):  
Path Analysis ◽  
Total Yield ◽  
Marketable Yield ◽  
Breeding Programs ◽  
Phenotypic Correlations ◽  
Genotypic And Phenotypic Correlations ◽  
Number Of Leaves ◽  
Commercial Yield ◽  
Selection Of ◽  
Bulb Yield

ABSTRACT Correlations and path analysis between characteristics can aid the selection of important attributes in breeding programs. Thus, the objective of this work was to perform genotypic, phenotypic correlations and path analysis under commercial yield of garlic bulbs, depending on morphological and agronomic variables. The experiment was carried out in 2017 at the Universidade Federal dos Vales do Jequitinhonha e Mucuri and Universidade Federal de Lavras, using ten garlic genotypes, eight trials and two commercial cultivars, Caçador and Jonas. We evaluated: plant height; number of leaves, total bulb number; total bulb mass, total bulb yield, marketable bulb yield and number of cloves per bulb. The genotypic and phenotypic correlations were positive and significant between marketable yield of bulbs with bulb mass, total yield and number of cloves per bulb, indicating that selection based on these characteristics will help increase the yield of garlic. However, only the number of cloves per bulb had a direct effect and a relevant indirect effect on the marketable yield of garlic.

Effects of potassium and magnesium fertilizers on yield and size distribution of potatoes

1973 ◽  
Vol 80 (3) ◽  
pp. 369-373 ◽  
Author(s):  
K. Simpson ◽  
P. Crooks ◽  
S. McIntosh
Keyword(s):  
Seed Potato ◽  
Field Experiments ◽  
Total Yield ◽  
Tuber Initiation ◽  
Factorial Experiments ◽  
K Fertilizer ◽  
Dry Conditions ◽  
History Of ◽  
Potato Crops ◽  
Low K

SummaryThirteen field experiments were made during 6 years on seed-potato growing farms in south-east Scotland, comparing three rates, 70, 140 and 280 kg K/ha as potassium chloride and four rates of 0–54 kg Mg/ha as kieserite in 3 × 4 factorial experiments.More than 70 kg/ha of potassium increased total yield only at one site, which had a recent history of low K application and very low available K. Yields were decreased by more than 70 kg/ha of potassium at three sites in a season with abnormally dry conditions just after planting. Applied magnesium had little effect on total yield.Extra potassium increased ware yield but decreased seed yield, both consistently, probably because the fertilizer damaged some stolons at or before tuber initiation and fewer tubers developed. The ware/seed ratio was generally increased by extra K, but after the dry spring this ratio was unaltered or reduced. Applied magnesium had little effect on the ratio.Our results suggest that the present rates of K fertilizer, used for commercial seed-potato crops (114–138 kg K/ha) in south-east Scotland are excessive, and a much lower rate of approximately 70 kg K/ha would be adequate except on very low K sites.

Interactive Effect of Phosphorus and Potassium on Growth, Yield, Quality and Seed Production of Chili (Capsicum annuum L.)

2017 ◽  
Vol 04 (01) ◽  
Author(s):  
Mehnaz Akram ◽  
Sayed Hussain ◽  
Abdul Hamid ◽  
Sajid Majeed ◽  
Saeed Ahmed Chaudary ◽  
...  
Keyword(s):  
Capsicum Annuum ◽  
Seed Production ◽  
Interactive Effect ◽  
Growth Yield ◽  
Capsicum Annuum L ◽  
Yield Quality ◽  
Phosphorus And Potassium
Sign in / Sign up

Export Citation Format

Share Document