RESPONSE OF PEAS TO ENVIRONMENT: IV. EFFECT OF FIVE SOIL WATER REGIMES ON GROWTH AND DEVELOPMENT OF PEAS

1968 ◽  
Vol 48 (2) ◽  
pp. 129-137 ◽  
Author(s):  
A. R. Maurer ◽  
H. F. Fletcher ◽  
D. P. Ormrod
Keyword(s):  
Water Stress ◽  
Soil Water ◽  
Growth And Development ◽  
Dry Matter ◽  
Fresh Weight ◽  
Water Regimes ◽  
Severe Water Stress ◽  
Water Conditions ◽  
Before And After ◽  
Soil Water Conditions

Pea plants growing in "weighing lysimeters" were subjected to five soil-water regimes to determine their response to varying conditions of soil water imposed at different stages of development. Plants subjected to a minimal water stress developed luxuriantly and continued to grow up to the harvest period. Pea yield and plant height were not reduced, but fresh weight and dry matter were less if irrigation was applied when soil water fell to 60% rather than 88% of that available. A severe water stress after blossom reduced pea yield, irrespective of soil-water conditions prior to blossom. Plants which had been given ample soil water before blossom wilted visibly when a severe stress was imposed in the post-blossom period, yet wilting did not occur in plants subjected to severe water stress both before and after blossom. Severe water stress prior to blossom did not cause a decrease in pea yield if ample soil moisture was made available after blossom.

A CLIMATIC MOISTURE INDEX FOR LAND AND SOIL CLASSIFICATION IN CANADA

1970 ◽  
Vol 50 (3) ◽  
pp. 291-301 ◽  
Author(s):  
W. K. SLY
Keyword(s):  
Water Stress ◽  
Soil Water ◽  
Soil Classification ◽  
Climatic Variables ◽  
Climatic Data ◽  
Moisture Index ◽  
Annual Crops ◽  
Water Conditions ◽  
Soil Water Conditions ◽  
Irrigation Requirements

Recent advances in the application of computer techniques for determining irrigation requirements from climatic data have made possible the development of a climatic moisture index to supplement conventional methods used in land and soil classification. The index approximates the ability of precipitation to provide the water required by annual crops if their production is not limited by water stress. Standardization of the non-climatic variables involved in its determination does not unduly restrict the range of soil textures and spring soil water conditions to which it applies. The values of the index in the various climatic regimes across the country are shown and their use in providing supplemental information for land and soil classification is indicated.

scholarly journals Effects of Irrigation Regimes on Yield and Water Use by Sweetpotato

1990 ◽  
Vol 115 (5) ◽  
pp. 712-714 ◽  
Author(s):  
Doyle A. Smittle ◽  
Melvin R. Hall ◽  
James R. Stansell
Keyword(s):  
Water Stress ◽  
Soil Water ◽  
Water Use ◽  
Ipomoea Batatas ◽  
Regression Equations ◽  
Marketable Yield ◽  
Water Regimes ◽  
Soil Water Tension ◽  
Water Tension ◽  
Storage Root Development

Sweetpotatoes [Ipomoea batatas (L.) Lam cv. Georgia Jet] were grown on two soil types in drainage lysimeters under controlled soil water regimes during 1982 and 1983. Water regimes consisted of irrigating the sweetpotatoes throughout growth when soil water tension at 23 cm exceeded 25, 50, or 100 kPa or by allowing a 100-kPa water stress before root enlargement, during early root enlargement, or throughout root enlargement. Water use and marketable yields were greater when sweetpotatoes were grown on a Tifton loamy sand (fine loamy, siliceous, thermic, Plinthitic Paleudult) than when grown on a Bonifay sand (loamy, siliceous, thermic, Grossarenic, Plinthitic Paleudult). Water use, marketable yield, and yield of U.S. #1 grade roots generally decreased when soil water tensions exceeded 25 kPa before irrigation, although soil water stress of 100 kPa during storage root development did not significantly affect yield. Regression equations are provided to describe the relationships of water use to plant age and to compute daily evapotranspiration: pan evaporation ratios (crop factors) for sweetpotatoes irrigated at 25, 50, and 100 kPa of soil water tension.

scholarly journals ОКРЕМІ ПИТАННЯ АНАЛІЗУ УШКОДЖЕНЬ БУДІВЕЛЬНИХ ОБ’ЄКТІВ ВЕЛИКОЇ ПЛОЩІ

2018 ◽  
pp. 356-364
Author(s):  
Марек Дохойда ◽  
Йоанна Вітковска-Добрев
Keyword(s):  
Soil Water ◽  
Expansion Joints ◽  
Concrete Shrinkage ◽  
Design And Implementation ◽  
Water Conditions ◽  
Complex Engineering ◽  
Soil Water Conditions ◽  
Bottom Slab

У роботі представлений перелік проблем, що супроводжують будівельні об'єкти великої площі, в тому числі й підземні гаражі. Здійснено технічний аналіз окремих проблем, що виникають в таких будівлях під час їх експлуатації. Проектування, а пізніше і будівництво підземних гаражів найчастіше, пов'язане з вирішеням складних інженерних питань. Згідно з ними до найпоширеніших конструкційних недоліків у підземних гаражах віднесні: тріщини нижньої плити, порушення поверхових перекриттів, невластиве кручення бетону, відсутність дилатації або також помилково прийняті ґрунтово-водні умови.The paper concerns complex engineering challenges associated with multi-storey underground car parks. An analysis of selected issues in underground garages during the exploitation was performed. The design and implementation of structures of which function are underground garages is most often associated with serious engineering challenges. For structural reasons frequently occurring faults in garages may include fracture of the bottom slab and intermediate floors resulting from improper design of reinforcement, concrete shrinkage, lack of expansion joints or incorrectly adopted soil-water conditions.

Effects of zinc fertilizer on maize yield and water-use efficiency under different soil water conditions

2020 ◽  
Vol 248 ◽  
pp. 107718 ◽  
Author(s):  
Li Zhang ◽  
Minfei Yan ◽  
Hongbing Li ◽  
Yuanyuan Ren ◽  
Kadambot HM Siddique ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Maize Yield ◽  
Water Conditions ◽  
Zinc Fertilizer ◽  
Use Efficiency ◽  
Soil Water Conditions

scholarly journals Root responses of Siberian larch to different soil water conditions

2011 ◽  
Vol 5 ◽  
pp. 93-97 ◽  
Author(s):  
Mie Miyahara ◽  
Chisato Takenaka ◽  
Rie Tomioka ◽  
Takeshi Ohta
Keyword(s):  
Soil Water ◽  
Siberian Larch ◽  
Water Conditions ◽  
Root Responses ◽  
Soil Water Conditions
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