scholarly journals Fertilizing Drip-irrigated Bell Peppers Grown on Loamy Sand soil

1995 ◽  
Vol 5 (4) ◽  
pp. 291-294 ◽  
Author(s):  
Craig A. Storlie ◽  
Philip E. Neary ◽  
James W. Paterson
Keyword(s):  
New Jersey ◽  
Fruit Quality ◽  
Sandy Loam ◽  
Fertilization Rate ◽  
Fruit Weight ◽  
Loamy Sand ◽  
Loamy Sand Soil ◽  
Bell Peppers ◽  
Loam Soil ◽  
Marketable Fruit

The effects of fertilizer rates and application frequency on drip-irrigated bell peppers (Capsicum annuum L.) were evaluated at two sites in 1992 and one site in 1993 in southern New Jersey. Yield and fruit quality were greatest with 158N-69P-131K lb/acre at the site with a sandy loam soil. Yield and fruit quality responded to additional fertilizer at sites with loamy sand soils. Average marketable fruit weight increased with increasing fertilization rate at one of the two loamy sand sites. The incidence of sun scald decreased with increasing fertilization rate. Increasing the frequency of drip-applied fertilizer from 11 to 22 days did not affect yield or fruit quality in either year when the same amount of fertilizer was applied. These results show that maximizing the yield of bell peppers grown on loamy sand soils in New Jersey may require higher fertilization rates than previously recommended.

scholarly journals Soil Quality Factors Affecting Garlic Production

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 445D-445
Author(s):  
Carl J. Rosen ◽  
David E. Birong
Keyword(s):  
Organic Matter ◽  
Microbial Biomass ◽  
Soil Quality ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Loamy Sand ◽  
Sand Soil ◽  
Loamy Sand Soil ◽  
Biomass N ◽  
Loam Soil

Recent demand for high-quality garlic (Allium sativum L.) has prompted an interest in growing garlic as an alternative crop in the Upper Midwest. The overall objective of this study was to determine the effects of various amendments on garlic growth and selected soil quality indices in two contrasting soils. Garlic (Rocambole type) was planted in the fall of 1995 on a Kandota sandy loam (5% organic matter) and a Spartan loamy sand (1.5% organic matter). Three treatments replicated three times were tested: 1) a nonamended control, 2) manure compost, and 3) fertilizer application based on a soil test. Scapes were removed on half the plants in each plot and allowed to grow until harvest on the other half. Soil microbial biomass nitrogen (N) and carbon (C) were determined before planting and about 4 weeks after emergence. Within each site, the effect of soil amendments on garlic yield depended on scape removal. Garlic yield in nonamended soil was lowest when scapes were not removed. The effect of scape removal tended to diminish when compost or fertilizer was applied. Overall yields were 35% higher in the sandy loam soil compared to the loamy sand soil. Drought stress occurred during bulbing at both locations. Higher yields in the sandy loam soil were likely due to its higher water-holding capacity. Soil amendments did not consistently affect microbial biomass N and C; however, the sandy loam soil had 2 to 6 times higher biomass N and 3 to 4 times higher biomass C than the loamy sand soil and reflected the higher organic matter content of the sandy loam.

Response of lentil to Rhizobium inoculation and N fertilizer

1978 ◽  
Vol 90 (2) ◽  
pp. 325-327 ◽  
Author(s):  
H. S. Sekhon ◽  
J. N. Kaul ◽  
B. S. Dahiya
Keyword(s):  
Grain Yield ◽  
Sandy Loam ◽  
Maximum Yield ◽  
Loamy Sand ◽  
Rhizobium Inoculation ◽  
Loamy Sand Soil ◽  
Field Investigations ◽  
Loam Soil ◽  
Nitrogen Treatments ◽  
Yield Responses

SummaryField investigations were undertaken during the winters of 1971–6 to study the grain yield responses of lentil cultivars to seed inoculation with single and mixtures of Rhizobium strains. An effective symbiosis and consequent increase in the grain yield was associated with the efficacy of the strain. Inoculation with a superior strain produced 23–32 % more grain than no inoculation on loamy-sand soil and 46–90% more on sandy-loam soil.In separate studies comprising inoculation and nitrogen treatments, the seed treated with an effective Rhizobium strain gave on average 43% more yield than no inoculation and the application of 25 kg N/ha alone gave the same yield as inoculation. Rhizobium inoculation plus 20 kg N/ha was the best combination for maximum yield under both loamy-sand and sandy-loam soils.

scholarly journals Influence of organic fertilizers on potato yield and quality in different humidity years

2020 ◽  
Vol 27 (1) ◽  
Author(s):  
Auksė Burakova ◽  
Eugenija Bakšienė ◽  
Almantas Ražukas
Keyword(s):  
Sandy Loam ◽  
Starch Content ◽  
Soil Layer ◽  
Loamy Sand ◽  
Organic Fertilizers ◽  
Research Centre ◽  
Potato Tubers ◽  
Npk Fertilizers ◽  
Loamy Sand Soil ◽  
Loam Soil

The aim of the study was to evaluate the influence of organic fertilizers on the potato tubers yield and nutrient accumulation. Experiments were carried out at the Vokė Branch of the Lithuanian Research Centre for Agriculture and Forestry in 2016–2018. The experiments were performed in stationary concrete cylindrical 24 lysimeters on sandy loam and loamy sand Haplic Luvisol, with a surface area of 1.75 m2 and a test soil layer of 1.35 cm. Fertilization with three randomized replications on each side of lysimeters were the following: 1) control (no fertilizer); 2) NPK organic fertilizers (Provita, phosphorite powder, potassium magnesia); 3) 40 t ha–1 sapropel; 4) 60 t ha–1 manure. The results of the experiments suggest that 40 t ha–1 sapropel and 60 t ha–1 manure fertilizers increase potato tuber yields in both soils (sandy loam soil and loamy sand soil). Inserted NPK fertilizers produced the highest yield (in 2017 and 2019) of a small fraction of potato tubers. The findings suggest that during the drier period, in 2019, the accumulation of all elements increased about 0.7–7 times in both soils. The starch content in the tubers was dependent mostly on the meteorological conditions.

scholarly journals Effect of boron fertilization of apple trees (Malus domestica Borth.) on yield and fruit quality

2013 ◽  
Vol 50 (1-2) ◽  
pp. 111-124 ◽  
Author(s):  
Paweł Wójcik ◽  
Augustyn Mika ◽  
Grzegorz Cieśliński
Keyword(s):  
Fruit Quality ◽  
Boron Concentration ◽  
Sandy Loam ◽  
Fruit Weight ◽  
Boron Deficiency ◽  
Apple Trees ◽  
Weight Losses ◽  
Fruit Maturity ◽  
Loam Soil ◽  
Boron Fertilization

Aim of this work was to examine effect of boron fertilization on yield of apple trees and fruit quality. The experiment was carried out during 1994-1996 in Dąbrowice Experimental Orchard belonging to Research Institute of Pomology and Floriculture in Skiemiewice, on Š a m p i o n cultivar, grafted on M26 rootstock. Trees were planted in the autumn of 1991 at the distance 4 x 2,5 m, on sandy-loam soil. Before starting and during carrying out the study there were not visual symptoms of boron deficiency. In the experiment applied boron fertilization to the soil at the dose 2 g B per tree or three times boron sprays before or after bloom at the dose 0,67 g B per tree. Apple trees without any boron fertilization were served as a control. Results of experiment showed that only boron sprays after bloom increased fruit set and yield. There were no significant differences between treatments in fruit maturity at harvest, fruit weight losses dunng storage, apple number infected by <em>Penicillium, Monilina</em> and <em>Botrytis cinerea</em>. Boron sprays after bloom increased firmness of apples after storage and decreased sensibility to bitter pit, internal breakdown and <em>Gloeosporium</em>-rot. All boron treatments increased boron concentration in apples in comparison with control ones. However, the highest increase of boron concentration in apples was observed when boron sprays were done after bloom and soil boron application. Only boron sprays applied after bloom increased calcium concentration in apples.

scholarly journals Soil types and their relations with radon concentration levels in Middle Governorate of Gaza Strip, Palestine

2020 ◽  
Vol 53 (1) ◽  
pp. 55
Author(s):  
Khalid Fathi Ubeid ◽  
Khaled Ahmed Ramadan
Keyword(s):  
Radon Concentration ◽  
Sandy Loam ◽  
Soil Depth ◽  
Gaza Strip ◽  
Mechanical Analysis ◽  
Soil Samples ◽  
Loamy Sand ◽  
Positive Correlation ◽  
Loamy Sand Soil ◽  
Concentration Levels

<p>Determination of natural radioactivity has been carried out in surface and core agricultural soil samples collected from various sites in the Middle Governorate – Gaza Strip, Palestine. Mechanical and chemical analysis has been done to determine soil characteristics. Radon activity concentration measurements were carried out using solid state nuclear tracks detectors, Cr-39. The mechanical analysis results show that they belong to two classes, sandy loam and loamy sand. The sandy loam soil was observed in the eastern side of the study area, whereas the loamy sand was observed in western and middle parts. The radon concentration levels were higher in core samples and were proportionate to the soil depth. Also they were higher in sandy loam than loamy sand soil samples. The radon concentration levels had a positive correlation with fine grains (clay- to silt-size) of soil sample which translocated from upper to lower horizons of soil during its development. Additionally, there was a positive correlation with pH and water content, whereas a negative correlation was observed with organic matter and potassium contents. The positive correlation referred to a large specific surface of fine grains which were located in lower horizons of soil and were able to adsorb more water and consequently led to high radon concentration levels.</p>

scholarly journals 278 A Ratoon Cropping System for Fall Bell Pepper Production

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 439B-439
Author(s):  
Brian A. Kahn ◽  
Daniel I. Leskovar
Keyword(s):  
Capsicum Annuum ◽  
Cropping System ◽  
Late Summer ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Bell Pepper ◽  
Average Height ◽  
Bell Peppers ◽  
Marketable Fruit

Studies were conducted to examine the effects of pruning treatments applied to spring-transplanted bell peppers (Capsicum annuum L.) on marketable fruit yield in late summer and fall. Control plants were set in the field in early May 1997 (Oklahoma) and Apr. 1998 (Oklahoma and Texas) and were harvested weekly into October (Oklahoma) or periodically into December (Texas). In 1997, there were no differences in total marketable fruit weight among four treatments involving height and method of pruning, but all reduced total marketable fruit weight relative to the control. In Oklahoma in 1998, the control was compared to plants mowed on 27 July at an average height of ≈24 cm. Mowed plants produced less total marketable fruit weight but more U.S. Fancy fruit than control plants. Also, control and mowed plants did not differ in weight of U.S. no. 1 fruit. In Texas in 1998, the control was compared to plants mowed on 4 Sept. at a height of ≈20 cm. Mowed plants produced more than double the weight of U.S. no. 1 fruit and fewer cull fruit than control plants. Nonpruned transplants set in the field in Summer 1998 (Oklahoma and Texas) gave low marketable yields. Maintaining spring-transplanted bell peppers is a viable technique for fall pepper production, and the highest total marketable yields may occur if these plants are not mowed. However, mowing offers an opportunity for increased fall production of premium fruit, and mowed plants would be easier to manage than unpruned plants.

scholarly journals Fertilizer Substitutions in Hydroponically Grown Greenhouse Tomatoes

1999 ◽  
Vol 9 (1) ◽  
pp. 59-65 ◽  
Author(s):  
A.P. Papadopoulos ◽  
S. Pararajasingham ◽  
X. Hao
Keyword(s):  
Fruit Quality ◽  
Total Yield ◽  
Growth Yield ◽  
Fruit Weight ◽  
Crop Growth ◽  
Partial Substitution ◽  
Marketable Yield ◽  
Nutrient Film Technique ◽  
Marketable Fruit ◽  
Crop Growth Stage

Experiments were carried out to evaluate two salts, K2SO4 and NaCl, as materials to supplement the electrical conductivity (EC) of the basic nutrient solution in nutrient film technique (NFT). The effects of these materials on the growth, yield and fruit quality of greenhouse tomato (Lycopersicon esculentum Mill.) grown by NFT were quantified. These effects were tested by increasing the recirculating solution EC from a base value of 1500 μS·cm-1 to that suitable for the crop growth stage with normal feed (macronutrients), 0.38 m (0.53 lb/gal) K2SO4 or 1.14 m (0.55 lb/gal) NaCl, at a common pH of 6.2. In 1995 and 1996, there were no significant effects of the treatments on crop growth. In 1995, the early marketable yield was significantly lower when K2SO4 was used but the yield at the end of the season did not differ among the treatments. Furthermore, with K2SO4, the proportion of grade #1 fruit in early total yield was lower than in the control, while, fruit biomass content was higher than in the NaCl treatment. In 1996, the cumulative marketable fruit weight was unaffected by the treatments. A trend toward high number of large grade fruit occurred with the NaCl treatment. The pH and EC of the fruit homogenate were favorably affected by the NaCl treatment. Adding K2SO4 or NaCl in partial substitution of macronutrients in the recirculating solution may have a role in NFT systems in not only reducing environmental pollution (from nitrates and phosphates) and fertilizer costs, but also in improving fruit quality and, therefore, profit margins.

scholarly journals Pollination service of Nannotrigona testaceicornis stingless bees in strawberry

2020 ◽  
Vol 87 ◽  
Author(s):  
Giuliana Ribeiro da Silva ◽  
Raquel Pérez-Maluf ◽  
Generosa Sousa Ribeiro ◽  
Ana Luiza de Jesus Gusmão
Keyword(s):  
Fruit Quality ◽  
Stingless Bees ◽  
Fertilization Rate ◽  
Fruit Weight ◽  
Added Value ◽  
Pollination Service ◽  
Longitudinal Length ◽  
Randomized Experimental Design ◽  
Natural Pollination ◽  
Nannotrigona Testaceicornis

ABSTRACT Strawberry presents moderate dependence on bee pollination service, and pollination is related to the production and quality of fruits. The aim of this study was to evaluate the pollination service provided by Nannotrigona testaceicornis stingless bees in strawberry. Primary flowers of cultivar San Andreas were used in a completely randomized experimental design, with twelve replicates and five types of pollination: one N. testaceicornis visit (1V); two N. testaceicornis visits (2V); three N. testaceicornis visits (3V); natural pollination (NP); self-pollination (SP). In flowers visited by N. testaceicornis, movements and visit time were observed. The following fruit characteristics were evaluated: fruit biometry, fecundation rate of achenes, postharvest fruit quality, contribution of pollination agents and mechanisms on average fruit weight. In fruit biometry, pollination service contributed only in longitudinal length, which was higher in NP and 3V, compared to SP. In the different types of pollination, the fertilization rate of achenes did not differ and showed no effect on fresh fruit weight. In post-harvest fruit quality, 1V, 3V and NP showed better results regarding degree of deformation and marketability. Nannotrigona testaceicornis stingless bees and natural pollination contributed to the average fresh weight of strawberry fruits. Nannotrigona testaceicornis stingless bees and natural pollination provided improvement in quality and added value of fruits. Nannotrigona testaceicornis stingless bees were effective strawberry pollinators.

scholarly journals YIELDS AND FRUIT PRODUCTION PATTERNS OF ELEVEN EGGPLANT CULTIVARS

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 515C-515
Author(s):  
Brian A. Kahn ◽  
Mark E. Payton
Keyword(s):  
Field Study ◽  
Fruit Quality ◽  
Solanum Melongena ◽  
Fruit Production ◽  
Fruit Weight ◽  
Fruit Number ◽  
Two Factors ◽  
Marketable Fruit ◽  
Black Beauty ◽  
Over Time

Eggplants (Solanum melongena L.) were grown from transplants in a field study at Bixby, Okla., in 2005. Plants were harvested twice a week for 7 weeks. Data were taken from 3 individual plants per plot × 11 cultivars × 3 replications. The open-pollinated `Black Beauty' was inferior to the hybrids for yield and fruit quality. Patterns of cumulative percent marketable fruit number did not differ for 3 of the 4 cultivars producing the numerically highest (not always statistically highest) marketable fruit weights per plant (`Classic', `Nadia', and `Santana'). `Dusky' was the exception; fruit number peaked relatively early, but it still totaled among the highest for marketable fruit weight per plant. This might be considered an efficient fruiting pattern. Apart from `Dusky', a relatively high cumulative percent marketable fruit number throughout the season tended to be associated with an intermediate to low marketable fruit weight per plant. Two factors usually were responsible for this pattern: relatively low average marketable fruit weight, or high cull production. Despite significant differences in individual marketable fruiting patterns and average fruit weights, one relatively simple curvilinear model gave an excellent estimation of total and marketable eggplant fruit production (respectively) over time. The model was pct = 1/(1+exp(-(a+b*day))), where pct = estimated cumulative percent based on number of fruit, a = intercept, and b = slope.

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