scholarly journals Yield and Quality of Tomato Fruit under Water-table Management

1997 ◽  
Vol 122 (4) ◽  
pp. 491-498 ◽  
Author(s):  
Georges T. Dodds ◽  
Leif Trenholm ◽  
Ali Rajabipour ◽  
Chandra A. Madramootoo ◽  
Eric R. Norris
Keyword(s):  
Water Table ◽  
Sandy Loam ◽  
Tomato Fruit ◽  
Soil Surface ◽  
New Yorker ◽  
Tomato Production ◽  
Yield And Quality ◽  
Loam Soil ◽  
Water Table Management

In a 2-year study (1993-94), tomato (Lycopersicon esculentum Mill. `New Yorker') plants grown in a sandy loam soil in field lysimeters were subjected to four water table depth (WTD) treatments (0.3, 0.6, 0.8, and 1.0 m from the soil surface). In 1994, precipitation during the flowering stage was far above average and apparently led to waterlogging in the shallowest WTD treatment, while in the drier year (1993), the deepest WTD treatment suffered from drought stress. In general, over the 2 years, the 0.6-m WTD showed the best yields and largest fruit, while the 1.0-m WTD showed the lowest yields and smallest fruit. However, the incidence of catfacing, cracking, and sunscald was generally higher in the 0.6 m WTD treatment and lower in the 1.0-m WTD treatment. Furthermore, fruit firmness was generally greatest for the two deeper WTD than for the shallower WTD. To strike a balance between yield and quality, a WTD of between 0.6- and 0.8-m is recommended for tomato production on sandy loam soils.

scholarly journals Influence of biogass slurry and urea on yield and quality of okra (Abelmoschus esculentus L.) fruits

2015 ◽  
Vol 16 ◽  
pp. 161-169 ◽  
Author(s):  
K Ghimire ◽  
DM Gautam ◽  
K Mishra ◽  
KR Pande ◽  
A GC
Keyword(s):  
Sandy Loam ◽  
Growth Yield ◽  
Biogas Slurry ◽  
F1 Hybrid ◽  
Yield And Quality ◽  
Hybrid Variety ◽  
Loam Soil ◽  
Number Of Leaves ◽  
Inorganic Chemical

The study was conducted on sandy loam soil at IAAS Rampur, Chitwan during May to September, 2012 to evaluate the effect of different combinations of biogas slurry and urea on production of okra, laid out in a two-factor RCBD with three replications. Altogether ten treatments consist of two varieties namely Arka Anamika - open pollinated and Jaikisan-62-F1 hybrid and four different levels of biogas slurry and urea combination (urea75%+biogas slurry25%, urea50%+biogas slurry50%, urea25%+biogas slurry75% and biogas slurry100%) and only inorganic chemical (75:60:50 kg NPK/ha) as control. All treatments were based on fulfillment of required nitrogen for the crop. The results showed that application of urea50%+biogas slurry50% increased plant height, leaf area, number of leaves and number of nodes at final harvesting. Treatment urea50% + biogas slurry50% allow maximum number of pickings/plant (23.2) and number of fruits/plant (23.5) resulting highest yield/plant (376.3 g). Among the varieties, Jaikisan-62 is superior in terms of growth, yield and post harvest character than Arka Anamika. The net return (Rs. 474,136/ha) and mean B/C ratio was highest (2.59) in Jaikisan-62 treated with urea50%+biogas slurry50%. So, for the commercial production hybrid variety is suggested.

scholarly journals Yellow Passion fruit performance in organic crop under mulch

2018 ◽  
Vol 40 (2) ◽  
Author(s):  
Thays Lemos Uchôa ◽  
Sebastião Elviro de Araújo Neto ◽  
Pablo Oliveira Selhorst ◽  
Maria Júlia da Silva Rodrigues ◽  
Robson de Oliveira Galvão
Keyword(s):  
Sandy Loam ◽  
Block Design ◽  
Quadratic Function ◽  
Maximum Point ◽  
Clay Loam ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
Loam Soil ◽  
Yellow Passion Fruit

Abstract The aim of this work was to evaluate the effect of mulch on clay loam and sandy loam soils on the start harvest, number of fruits per plant, yield and quality of yellow passion fruits in organic crop. A complete randomized block design with five treatments and four replicates of five plants each was used. Treatments corresponded to different percentages of mulch of the area occupied by the plant (3 x 3 m), extending from the center of the planting line to the planting row in 0% without mulch (T1); 25% (T2); 50% (T3); 75% (T4) and 100% (T5). Mulch anticipated the harvest in comparison to crop in uncovered soil in both types of soil. The number of fruits per plant and yield increased in a quadratic function with maximum point of 38.6 fruits plant-1 and 5,182.0 kg ha-1 with 75.7% and 78.0% of soil cover, respectively. Mulch on clay loam soil did not provide increase in the average fruit mass and did not change the quality of fruits in relation to control fruits.

Impacts of Water Table Management on N2O and N2 from a Sandy Loam Soil in Southwestern Quebec, Canada

2005 ◽  
Vol 72 (3) ◽  
pp. 229-240 ◽  
Author(s):  
Abdirashid Elmi ◽  
David Burton ◽  
Robert Gordon ◽  
Chandra Madramootoo
Keyword(s):  
Water Table ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Loam Soil ◽  
Water Table Management

scholarly journals Effects of Controlled Water Tables on Yield and Marketability of Field Tomatoes

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 838F-838
Author(s):  
L. Trenholm ◽  
G.T. Dodds ◽  
C.A. Madramootoo ◽  
K. Stewart
Keyword(s):  
Sandy Loam ◽  
Soil Surface ◽  
New Yorker ◽  
Tomato Production ◽  
Tomato Plants ◽  
Plant Yield ◽  
Water Tables ◽  
Field Lysimeters ◽  
Shoot Mass ◽  
Central Composite

In a 2-year study, tomato plants (Lycopersicon esculentum Mill., cv. New Yorker), grown in a sandy loam in field lysimeters, were subjected to controlled water table treatments (CWTT) of 0.3, 0.6, 0.8, and 1.0 m from the soil surface, factorially combined, in a central composite design, with 5 K–Ca fertilization combinations, replicated four times. Final shoot mass, no. fruit/plant (yield), percent marketability, fruit dimensions, and the incidence and severity of catfacing and sunscald were measured. In the first, drier year, the two higher, better-irrigated CWTT (0.3 and 0.6 m) gave higher yields, larger fruit, and higher final shoot mass, whereas in the second, wetter year, the two lower, better-drained CWTT (0.8 and 1.0 m) were best. In the dry year, the best-yielding CWTT showed the poorest marketability, while, in the wet year, the best-yielding CWTT showed the best marketability. Severity of catfacing and sunscald did not show consistent variations with CWTT. Fertilizer effects were generally not significant. Results will be discussed in the context of the use of subirrigation in field tomato production.

scholarly journals Influence of Chelated Micronutrients on Yield and Quality of Potato Tubers

2019 ◽  
Author(s):  
Oksana Starovoitova ◽  
Viktor Starovoitov ◽  
Aleksandra Manokhina
Keyword(s):  
Field Experiment ◽  
Sandy Loam ◽  
Control Group ◽  
Control Groups ◽  
Marketable Yield ◽  
Yield And Quality ◽  
Loam Soil ◽  
Chelate Compounds ◽  
Sulfur Containing

The purpose of this research was the evaluation of the influence of chelate compounds of micronutrients on yield and state tubers of mid-season potato variety Kolobok during storage. The research was conducted on the fields with sod-podzolic sandy loam soil in 2016 and 2017 years. During the research one tuber processing and two foliar processing were done before planting and during vegetation respectively. The experiment had two control groups, the first group was not treated at all and the second group was treated with water. The organization of field experiment, counting and observation were done according to requirements of methods of field experiment and “Methods of investigation of potato varieties”. On average two years groups treated with drugs, which contain chelate compounds of micronutrients, had 4.4 and 4.7 main stems per bush respectively that was more than in control groups. The application of the drugs increased marketable yield by 3.5–3.7 t/ha (13.5–14.2 %). On average two years groups treated with the sulfur-containing drug had the biggest marketable yield that was 9.9 tubers per bush (1.5 tubers per bush or 17 % more than the first control group). The obtained result of the experiment means that these drugs are worth using during potato cultivation.

scholarly journals Effects of Watertable and Fertilizer Management on Susceptibility of Tomato Fruit to Chilling Injury

1996 ◽  
Vol 121 (3) ◽  
pp. 525-530
Author(s):  
Georges T. Dodds ◽  
Leif Trenholm ◽  
Chandra A. Madramootoo
Keyword(s):  
Color Change ◽  
Tomato Fruit ◽  
Chilling Injury ◽  
Soil Surface ◽  
Chilling Tolerance ◽  
Fertilizer Management ◽  
Lesion Area ◽  
New Yorker ◽  
Consistent Manner ◽  
Calcium Fertilization

In a 2-year study (1993-1994), `New Yorker' tomato (Lycopersicon esculentum Mill.) plants grown in field lysimeters were subjected to four watertable depth (WTD) treatments (0.3, 0.6, 0.8, and 1.0 m from the soil surface) factorially combined with 5 potassium/calcium fertilization combinations. Mature-green fruit from four replicates of each treatment were stored at 5C for 21 days, and fruit color was monitored with a tristimulus colorimeter. Fruit were subsequently allowed to ripen at 20C for 10 days, at which time chilling injury was assessed on the basis of delayed ripening and area of lesions. Potassium and calcium applied in the field had no effect on chilling tolerance of the fruit. In the drier year (1993), shallower WTD treatments generally yielded fruit that changed color less during chilling and were more chilling-sensitive based on delayed ripening. In the wetter year, differences in color change and chilling tolerance between WTD, if any, were small. Over both years, lesion area varied with WTD, but not in a consistent manner. Based on these results, we suggest that differences in water availability should be considered when studying tomato fruit chilling.

Examination of the Penetration of Enteric Viruses in Soils under Simulated Conditions in the Laboratory

1985 ◽  
Vol 17 (10) ◽  
pp. 197-199 ◽  
Author(s):  
P. H. Jørgensen
Keyword(s):  
Sewage Sludge ◽  
Unsaturated Soil ◽  
Sandy Loam ◽  
Soil Column ◽  
Enteric Viruses ◽  
Soil Surface ◽  
Coxsackievirus B3 ◽  
Soil Columns ◽  
Sand Column ◽  
Loam Soil

In two different unsaturated soil columns percolated with artificial rainwater under simulated aerated conditions, transport of coxsackievirus B3 and adenovirus 1 below 3.5 cm under the soil surface could not be demonstrated. The viruses were applied to the columns as seeded sewage sludge. Under saturated conditions transport of water-suspended coxsackievirus B3 was faster in a soil column with sandy loam soil than in a diluvial sand column.

Subsurface Application and Shallow Incorporation of Herbicides on Cotton

Weed Science ◽  
1968 ◽  
Vol 16 (4) ◽  
pp. 494-498 ◽  
Author(s):  
A. F. Wiese ◽  
E. B. Hudspeth
Keyword(s):  
Gossypium Hirsutum ◽  
Weed Control ◽  
Sandy Loam ◽  
Soil Surface ◽  
Sandy Loam Soil ◽  
Soil Types ◽  
Loam Soil

In a 3-year study on four soil types, subsurface application just ahead of a planter with a device that removed the top from the bed, applied a band of spray, and covered the band with soil reduced weed control in cotton (Gossypium hirsutum L.) obtained with 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron), 2,4-bis(isopropylamino)-6-methylmercapto-s-triazine (prometryne), 3-(hexahydro-4,7-methanoindan-5-yl)-1,1-dimethylurea (norea), dimethyl-2,3,5,6-tetrachloroterephthalate (DCPA), and 1,1-dimethyl-3(α,α,α,-trifluoro-m-tolyl)urea (fluometuron) compared to applications on the soil surface. This machine improved weed control with α,α,α,-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin). Shallow incorporation, with two helical blades, after planting increased weed control with trifluralin, diuron, and DCPA by 10% or more over the surface applications. This incorporator increased weed control obtained with prometryne and norea 5%. Very shallow incorporation, with metal tines, after planting improved weed control obtained with trifluralin and DCPA 18 and 11%, respectively. Weed control with norea was increased 7%, but metal tines did not appreciably affect weed control obtained with prometryne, diuron, or fluometuron. Compared to surface applications, incorporation increased cotton injury with diuron, norea, prometryne, and fluometuron on sandy loam soil.

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