EFFECTS OF COVER CROPS ON YIELD AND QUALITY OF ORGANICALLY GROWN GREENHOUSE TOMATOES

2012 ◽  
pp. 307-312 ◽  
Author(s):  
H. Duyar ◽  
Y. Tuzel ◽  
G.B. Oztekin
Keyword(s):  
Cover Crops ◽  
Yield And Quality ◽  
Greenhouse Tomatoes ◽  
Organically Grown

scholarly journals Effects of Furrow Height and Amount of Manure Compost on the Growth, Yield, and Quality of Organically Grown Green Asparagus

2021 ◽  
Vol 4 (2) ◽  
pp. 1056-1066
Author(s):  
Nguyen Hong Hanh ◽  
Nguyen Thi Ai Nghia ◽  
Nguyen Thi Ngoc Dinh ◽  
Do Thi Huong
Keyword(s):  
Block Design ◽  
Growth Yield ◽  
Asparagus Officinalis ◽  
Manure Compost ◽  
Yield And Quality ◽  
Upland Crop ◽  
National University ◽  
Organically Grown ◽  
Green Asparagus

A two-season field trial was carried out in the Upland Crop Experiment Field of the Faculty of Agronomy, Vietnam National University of Agriculture (VNUA) to assess the effects of three furrow heights (20, 35, and 50cm) and three manure compost levels (15, 25, and 35 tons ha-1) on the growth, yield, and quality of green asparagus (Asparagus officinalis L.) grown organically. The experiments were arranged in a randomized completely block design (RCBD) with three replications. The results showed that the harvested yield was highest (11.3 and 25.1 quintals ha-1 in the 2019 autumn and 2020 spring season, respectively) in the treatment with a furrow height of 35cm and compost level of 35 tons ha-1 in both seasons, and explained by the increased spear diameters and number of spears per plant in this treatment when the furrow height and compost level were increased. Additionally, the chlorophyll content, water loss, and dry matter weight of the spears also increased when the furrow height and compost level increased. The obtained quality of the spears under organic management at the furrow height of 35 cm and compost level of 35 tons ha-1 was higher than the other treatments with higher reducing sugars, vitamin C, and Brix values, while the residue nitrate contents of all the treatments were lower than the allowed safety threshold.

scholarly journals WINTER COVER CROPS IN LOW-INPUT VEGETABLE PRODUCTION

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1158a-1158
Author(s):  
Kathryn E. Brunson ◽  
Sharad C. Phatak
Keyword(s):  
Cover Crops ◽  
Subterranean Clover ◽  
Field Trials ◽  
Vegetable Production ◽  
Marketable Yield ◽  
Crimson Clover ◽  
Yield And Quality ◽  
Winter Cover Crops ◽  
And Control

Cantaloupe (Cucumis melo L., cv. Hiline) were planted following over-wintering cover crops. In replicated field trials, stand development for 7 different cover crops and their effects on incidence of weeds, insects, diseases, and nematodes was assessed. Effects of cover crops on yield and quality of cantaloupe were evaluated. Cover crops evaluated were rye, crimson clover, lentils, subterranean clover, `Vantage' vetch, mustard, a polyculture of all cover crops and control-fallow. No insecticides were applied and only two applications of fungicides were made. Fertilizer applications were significantly reduced. No differences among cover crops for any of pest nematodes were observed. Significant differences in populations of beneficial and pest insects were observed. Polyculture had the highest plant vigor rating. The highest marketable yield occurred following crimson clover.

scholarly journals Heating Soil with Hot Air Improves Early Yield and Quality of Greenhouse Tomatoes

1994 ◽  
Vol 4 (3) ◽  
pp. 277-281 ◽  
Author(s):  
Martin P.N. Gent ◽  
Vincent Malerba
Keyword(s):  
Lycopersicon Esculentum ◽  
Weight Fraction ◽  
Simple Method ◽  
Soil Heating ◽  
Air Heater ◽  
Hot Air ◽  
Yield And Quality ◽  
Forced Air ◽  
Greenhouse Tomatoes

The soil within a greenhouse was heated by blowing hot air from a forced-air heater through drainage pipes buried beneath raised beds. This warmed the soil from 50F (10C) to 68F (20C) after 1 week of heating in mid-March. Soil in unheated beds did not warm to this temperature until May. The yield of tomato (Lycopersicon esculentum Mill.) planted in heated beds was higher than in unheated beds by 16% over the season in 1992, and by 14% as of early July 1993. The weight fraction of highest-quality fruit also were 11% greater in 1993. This simple method of soil heating involved negligible additional expense

scholarly journals Influence of crops of the cover crop when forming the ridge surface of landings of potatoes to dynamics of parameters of the soil state

2021 ◽  
Vol 262 ◽  
pp. 01038
Author(s):  
A. A. Ustroyev ◽  
E. A. Murzaev
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Growing Season ◽  
Geometric Parameters ◽  
Yellow Mustard ◽  
Erosion Processes ◽  
Yield And Quality ◽  
Optimal Values ◽  
Main Factors

The main factors limiting the yield and quality of potatoes are the geometric parameters of the ridge, as well as the parameters of the soil state (moisture, hardness and temperature). In this regard, the task of maintaining the optimal values of these parameters during the potato growing season is urgent. For this, it is proposed, after planting potatoes, simultaneously with the formation of ridges, to sow a cover crop (yellow mustard) on them, followed by its destruction. The purpose of this research is to study the effect of sowing cover crops during the formation of the ridge surface of potato plantings on the dynamics of soil state parameters and potato yield. As a result of the studies, it was found that the use of a new technological method ensures a decrease in the effect of erosion processes on the ridge and the preservation of its geometric parameters, which makes it possible to exclude two inter-row cultivation of potatoes, as well as stabilize the daily soil temperature in the ridge by 2-5 ° C and retain moisture by 5 - 10%, which allows to increase the yield of potatoes by 11%.

scholarly journals Effect of Shade on Quality of Greenhouse Tomato

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 759A-759
Author(s):  
Martin P.N. Gent*
Keyword(s):  
Light Transmission ◽  
Total Yield ◽  
Fruit Size ◽  
Marketable Yield ◽  
Greenhouse Tomato ◽  
Yield And Quality ◽  
Shade Cloth ◽  
Marketable Fruit ◽  
Greenhouse Tomatoes

Shading a greenhouse increased the fraction of tomatoes that were marketable, and the marketable yield, in a comparison of greenhouse tomato yields across years, in some of which the greenhouses were shaded. In 2003, the yield and quality of greenhouse tomatoes were compared directly when grown in spring and summer in Connecticut in identical greenhouses that differed only in the degree of shade. Each half of four greenhouses was either unshaded or shaded using reflective aluminized shade cloth rated to reduced light transmission by 15%, 30%, or 50%. Each shade treatment was repeated in two houses. Tomatoes were germinated in February and transplanted in March The houses were shaded when fruit began to ripen in early June. Picking continued through August. The effect of shade on total yield developed gradually. Yields in June were unaffected by shade, but in August yield under no shade was about 30% higher than under 50% shade. In contrast, there was an immediate effect of shade on fruit size. Fruit picked in June from plants under 50% shade was 16% smaller than from plants grown under no shade. This difference declined later in the season, to 6 and 9%, in July and August respectively. The highest yield of marketable fruit in 2003 was picked from houses under no shade, but this was only 10% more than picked from the houses under 50% shade. Shade increased the fraction of marketable fruit, from 54% under no shade to 63% under 50% shade. Certain defects were decreased by shade. For instance the fraction of fruit with cracked skin was decreased from 33% to 25%. In general, effects on fruit quality varied linearly with the degree of applied shade.

scholarly journals SUSTAINABLE NITROGEN ALTERNATIVES FOR SWEETPOTATO PRODUCTION

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 443e-443
Author(s):  
William E. Little ◽  
Jonathan R. Schultheis ◽  
Robert L. Mikkelsen
Keyword(s):  
Block Design ◽  
Market Price ◽  
The United States ◽  
Waste Products ◽  
Nutrient Sources ◽  
Yield And Quality ◽  
Environmentally Responsible ◽  
Fresh Litter ◽  
Organically Grown

North Carolina is a leading poultry producer in the United States. Thus, much waste by-product also is produced and must be handled in an environmentally responsible way. Using poultry and similar waste products as a fertilizer source for vegetables, such as sweetpotatoes, might serve as a viable use option. Our purpose was to determine the effectiveness of animal wastes and sludges as nutrient sources for sweetpotatoes. The effects of municipal solid waste, composted litter, fresh litter, and synthetic fertilizers were compared for their effects on yield and quality of `Regal' and `Beauregard' sweetpotato varieties. The test was planted as a split-plot randomized complete-block design with each treatment replicated four times. Planting was 3 June, and harvest was 27 Sept. 1994. Yields were similar when fertilized with either organic or synthetic nutrient sources. Root quality was excellent, regardless of fertilizer, because few culls resulted, and there were no differences between treatments. Sweetpotatoes can be successfully grown with various organic nutrient sources without affecting quality or yield and might be marketed as “organically grown” produce. This label may command a higher market price than sweetpotatoes grown traditionally with synthetic nutrient sources.

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