scholarly journals DIFFERENTIAL RESPONSE OF SEVERAL ROW COVERS ON YIELD OF WHITE POTATOES IN MISSOURI

HortScience ◽  
1990 ◽  
Vol 25 (8) ◽  
pp. 860e-860
Author(s):  
Mack A. Wilson ◽  
Michael Aide

Four types of row covers were evaluated on 'Norchip' and 'Atlantis' potatoes at Charleston, Missouri on a Lilbourn sandy loam entisol. Row covers used were spun-bonded polyester, insolar slitted, clear slitted and VisPore. The row covers increased the mean afternoon soil temperature above the ambient afternoon air temperature from 3 to 25°F when potato plants were covered. The number of plants which emerged were significantly different among treatment for the cultivar 'Norchip'. Data for plant height was significantly different between the bare soil control and the row cover treatments. Yield (Kg/HA) were higher with the spunbonded polyester and insolar slitted row covers for both number and weight of grade A (47.6-82.6 mm) potatoes, and results were significantly different.

HortScience ◽  
1991 ◽  
Vol 26 (5) ◽  
pp. 487h-488
Author(s):  
Mack A. Wilson ◽  
Michael T. Aide ◽  
Victor A. Khan

Four row covers were evaluated on fall production of `Packman' broccoli and `Gourmet' cabbage at Cape Girardeau, Missouri. Row covers used were spunbonded polyester, insolar and clear slitted polyethylene and VisPore. The mean afternoon soil temperature for row covers were higher than the bare soil control. There were no significant differences among treatments with respect to head size, total numbers and yield of marketable broccoli. The number of broccoli heads per thousand between the bare soil control vs. row cover treatments were significantly different. Data for number of broccoli heads per thousand and marketable yield (Kg/Ha) were significant among row covers. Marketable yield (Kg/Ha) was significant among row covers for `Gourmet' cabbage.


HortScience ◽  
1991 ◽  
Vol 26 (5) ◽  
pp. 494b-494
Author(s):  
Mack A. Wilson ◽  
Michael T. Aide

`Norchip' and `Atlantic' potatoes grown at Blodgett and Dielstadt, Missouri on 2 sandy, well drained entisols were evaluated using four row covers. The row covers were spunbonded polyester, insolar slitted, clear slitted polyethylene and VisPore. Row covers increased the mean afternoon soil temperature from 62° to 108°. The mean plant heights were significantly different among treatments for the cultivar `Norchip' but were not different for `Atlantic'. Data for average and total plant heights were significantly different between the bare soil control and all row covers. The grade a marketable weights and numbers in Kg and nos/Ha of `Norchip' and `Atlantic' potatoes had a significant contrast at the 0.01 level of probability with cultivars.


1969 ◽  
Vol 93 (3-4) ◽  
pp. 149-171
Author(s):  
Jorge L. Lugo-Camacho ◽  
Miguel A. Muñoz ◽  
Juan Pérez-Bolívar ◽  
Gregory R. Brannon

Soil temperature measurements from a climate monitoring network in Puerto Rico were evaluated and the difference between mean summer and mean winter soil temperature, known as isotivity value, was calculated. Air and soil temperature was collected from five weather stations of the USDA-Natural Resources Conservation Service from sea level to 1,019 m above sea level and from different soil moisture regimes. Isotivity values ranged from 1.2 to 3.9° C with an average of 2.6° C. The 750-m elevation was identified as the limit between the isohyperthermic and isothermic soil temperature regimes in the perudic soil moisture regime in Puerto Rico. The greatest differences between mean annual soil temperature and mean annual air temperature were observed at Guánica, Combate and Guilarte (2.1 ° C) stations. The smallest differences were observed at Maricao (0.8° C) and Isabela (1.8° C) stations. The study also indicated that the mean annual soil temperature in Puerto Rico can be estimated by adding 1.8° C to the mean annual air temperature or by the equation y = -0.007x + 28.0° C. The equation indicates that 97 percent of the time the behavior of the mean annual soil temperature is a function of elevation. According to the updated soil temperature regime boundaries, eight soil series were established in the Soil Survey of San Germán Area. In an area under the isothermic soil temperature regime, four soil series were classified as Oxisols (Haploperox), two soil series as Inceptisols (Eutrudepts) and two soil series as Mollisols (Argiudolls). This is the first field recognition of the Haploperox soil great group in the United States and its territories.


1994 ◽  
Vol 19 (1) ◽  
pp. 304-304
Author(s):  
Stanley R. Swier ◽  
John S. Weaver

Abstract The experiment was conducted on a golf course nursery. The experimental design was an RCB, replicated 4 times, with 6 ft × 6 ft plots. Treatments were applied 13 Aug and rated 20 Aug. Liquid treatments were applied with a watering can and granular treatments with a salt shaker applicator. Dylox was watered in with 2 gal/plot. Neem was not watered in. The BCW were predominantly 5th instar. Although neem dried on the foliage, the weather was cool and damp for 3 DAT. Conditions at the time of application were: air temperature, 68.2°F; soil temperature, 65.5°F; thatch depth, 0.75 inch; soil texture, sandy loam. Plots were rated by flushing the plot with a soap solution and counting the emerging BCW. Plots could not be rated for feeding damage due to excessive disease.


2014 ◽  
Vol 955-959 ◽  
pp. 3718-3723
Author(s):  
Hui Zhi Zhang ◽  
Xue Zheng Shi

Temperature affects many soil biochemical and geochemical processes. The growth of plants, seed germination, circulations of carbon and nitrogen are all significantly influenced by soil temperature, thus it is important to estimate the spatial pattern of soil temperature. This paper shows the results of spatial patterns of mean annual soil temperature interpolated from the measurements of 698 meteorological stations in China. Four geostatistical methods, ordinary kriging (OK), regression kriging with mean annual air temperature (RK-1), regression kriging with latitude, longitude and elevation (RK-2) and regression kriging with multi-auxiliary predictors (RK-3), were compared. Ordinary kriging (OK) directly interpolated the mean annual soil temperature data extracted from meteorological stations to obtain the spatial patterns of the mean annual soil temperature. For the three regression kriging methods, intensive auxiliary variables (mean annual air temperature, elevation, latitude and longitude), which were correlated with mean annual soil temperature, were used to increase the accuracy of estimation. The results suggested that RK-3 preformed best, followed by RK-1 and RK-2. The intensive data of auxiliary variables used in the regression kriging significantly improved the accuracy of interpolation results.


Author(s):  
Adhia Azhar Fauzan ◽  
Komariah Komariah ◽  
Sumani Sumani ◽  
Dwi Priyo Ariyanto ◽  
Tuban Wiyoso

Himawari 8 satellite image, which was launched in October 2014 and began the operational in July 2015, serves to identify and track the phenomenon of rapid changes in weather. The purpose of this research was to determine the model of local air and soil temperatures using Himawari 8 satellite image. Local air and soil temperatures information was collected from the Climatology Station of Semarang district, Central Java, Indonesia. Interpretation of the Himawari 8 satellite image was performed, as well as the statistical tests of correlation and regression, according to the sun's pseudo motion. Pair correlation and regression analysis on satellite image with air temperature; and air temperature with soil temperature (bare and grass). The results showed the satellite imagery of Himawari 8 could predict the air and soil temperatures, especially bare soil. In specific, the accuracies were higher on soil temperature at 0 (surface) and 5 cm depth. But each period produced vary accuracy, due to many weather elements had may affect the air and soil temperatures.


2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Ming-jin Zhan ◽  
Lingjun Xia ◽  
Longfei Zhan ◽  
Yuanhao Wang

Trends in soil temperature are important but rarely reported indicators of climate change. Based on daily air and soil temperatures (depth: 0, 20, 80, and 320 cm) recorded at the Nanchang Weather Station (1961–2018), this study investigated the variation trend, abrupt changes, and years of anomalous annual and seasonal mean air and soil temperatures. The differences and relationships between annual air and soil temperatures were also analyzed. The results showed close correlations between air temperature and soil temperature at different depths. Annual and seasonal mean air and soil temperatures mainly displayed significant trends of increase over the past 58 years, although the rise of the mean air temperature and the mean soil temperature was asymmetric. The rates of increase in air temperature and soil temperature (depth: 0, 20, and 80 cm) were most obvious in spring; the most significant increase in soil temperature at the depth of 320 cm was in summer. Mean soil temperature displayed a decreasing trend with increasing soil depth in both spring and summer. Air temperature was lower than the soil temperature at depths of 0 and 20 cm but higher than the soil temperature at depths of 80 and 320 cm in spring and summer. Mean ground temperature had a rising trend with increasing soil depth in autumn and winter. Air temperature was lower than the soil temperature at all depths in autumn and winter. Years with anomalously low air temperature and soil temperature at depths of 0, 20, 80, and 320 cm were relatively consistent in winter. Years with anomalous air and soil temperatures (depths: 0, 20, and 80 cm) were generally consistent; however, the relationship between air temperature and soil temperature at 320 cm depth was less consistent. The findings provide a basis for understanding and assessing climate change impact on terrestrial ecosystems.


MAUSAM ◽  
2021 ◽  
Vol 43 (3) ◽  
pp. 321-324
Author(s):  
Y.A. GOUTSIDOU ◽  
T.J. MAKROGIANNIS ◽  
A.A. FLOCAS ◽  
C.S. SAHSAMANOGLOU

The data. used for this study form the time series of the annual and seasonal fluctuations of bare soil temperature values In Thessaloniki-Greece. The mean arrival value IS 20°C with a standard deviation of 1 .3°C. The winter is the most variable season. The analysis of these time series has shown that there were notable spells of years with values above or below the normal one. Negative trends were observed for the annual and seasonal values with the exception of winters. The well known QBO was found in the annual and spring time series.  


2020 ◽  
Vol 12 (10) ◽  
pp. 225
Author(s):  
Andrés Javier Peña Quiñones ◽  
Christian José Mendoza Castiblanco

For several years, the Colombian sugarcane industry had sugar and ethanol as its primary products. However, during the last years, sugar mills opened a new market based on products before considered waste. This new market offers a new possibility for harvest-waste utilization. However, if the waste becomes an income source, crop management will change. Collecting sugarcane waste for its utilization in making some other products, would mean a new crop management scenario left the soil bare soil during the first stages of planting and ratoon canes. We simulated a bare soil condition using mesocosms, for the three most representative soil textures of the Cauca river valley, and we measured soil temperature at different depths during the most convenient planting season (March-April). Results demonstrated differences in soil temperature patterns, especially in sandy soils, which tend to have higher thermal amplitudes in all layers. The parameters of linear regressions that relate temperature of layers, including air temperature, give information related to the thermal properties of soils, and therefore, it is possible, under Cauca Valley conditions, in the future to infer soil temperature from air temperature.


Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1973
Author(s):  
Alejandro López-Martínez ◽  
Francisco D. Molina-Aiz ◽  
María de los Ángeles Moreno-Teruel ◽  
Araceli Peña-Fernández ◽  
Fátima J. F. Baptista ◽  
...  

The main objective of this work was to analyze the microclimate generated inside a low tunnel (floating row cover) installed in an Almería-type greenhouse. Low tunnels are commonly used in the open field to protect plants against insect attack and to improve the production of muskmelon and strawberry. Floating row covers can also be used inside greenhouses during the first few weeks after the transplantation of muskmelon and watermelon crops in spring-summer cycles. This work was carried out during the first weeks of a watermelon culture (Citrullus lanatus Thunb.) growing with a polyethylene row cover inside an Almería-type greenhouse (2115 m2). Air temperature and humidity, plant temperature and soil temperature and humidity were measured in the greenhouse inside and outside the row covers. During the three days of measurement, all greenhouse vent openings were closed. The use of the low tunnels increased average air temperature around plants from 24.0 ± 9.0 °C to 26.9 ± 9.7 °C. A maximum difference in air temperature of about 5.9 °C was observed at noon. The average daily temperature of the crop was 28.2 ± 11.8 °C inside the row cover and 24.6 ± 8.9 °C without it. Similarly, the absolute humidity of air was clearly higher inside the low tunnel (0.0201 ± 0.0098 g/g) than around the plant rows without floating cover (0.0131 ± 0.0048 g/g). The soil temperature was also higher inside the low tunnel compared to the area without this second plastic cover. The effect of the tunnel decreased with depth, with average temperature differences of 1.2 ± 0.5 °C on the soil surface and 0.6 ± 0.5 °C at 20 cm depth.


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