Journal ArticleDOI
Soil physical behaviour and crop responses to tillage in lowland rice soils of varying clay content.
TLDR
In this article, the influence of various tillage methods on two wetland rice soils in the Philippines was reported, and the clay soil, under field conditions, showed little change in pore size distribution or soil water behaviour with different tilage methods.Abstract:
The influence of various tillage methods on two wetland rice soils in the Philippines is reported. The soils differed principally in clay content, 38% for the clay loam (clayey, mixed isohyperthermic Entic Hapludoll) while 56% for the clay (clayey, mixed noncalcareous, isohyperthermic Andaqueptic Haplaquoll). This had a marked effect on their response to tillage and varying water regime. The clay soil, under field conditions, showed little change in pore size distribution or soil water behaviour with different tillage methods. Crop (Rice, Oryza sativa L., var. IR20) yields were unaffected by tillage.read more
Citations
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Screening the ability of rice roots to overcome the mechanical impedance of wax layers: importance of test conditions and measurement criteria
TL;DR: The development of a wax layer method for screening the ability of rice (Oryza sativa L.) roots to overcome mechanical impedance is described, and the best measure of root penetration in flooded conditions was the number of axes penetrating a 60% wax layer.
Journal ArticleDOI
Reducing bypass flow through a dry, cracked and previously puddled rice soil
TL;DR: In this paper, shallow surface tillage (0-50 mm) in the field reduced bypass flow, and laboratory experiments showed 45-60% water savings as a result of making the cracks discontinuous.
Journal ArticleDOI
Effect of puddling intensity on temporal variation in soil physical conditions and yield of rice (Oryza sativa L.) in a Vertisol of central India
TL;DR: In this article, the influence of varying intensities of puddling on the soil physical condition and rice yield in a Vertisol of central India has been investigated over two cropping seasons during year 2000 and 2001.
Journal ArticleDOI
Effect of puddling intensity on physical properties of a silty clay soil under laboratory and field conditions
Sayed-Farhad Mousavi,S. Yousefi-Moghadam,Behrouz Mostafazadeh-Fard,Abbas Hemmat,M. R. Yazdani +4 more
TL;DR: In this paper, the effects of different puddling intensities on physical properties of a silty clay soil (Typic Haplodalfs) was investigated under laboratory and field conditions.
Journal ArticleDOI
No-tillage effects on grain yield, N use efficiency, and nutrient runoff losses in paddy fields
TL;DR: Seedling cast transplantation, N rate within the range 120–180 kg N ha−1, and employing NT for longer than 3 years should be encouraged to compromise between productivity and environmental effects of NT implementation in rice fields.
References
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Journal ArticleDOI
A Simple Statistical Procedure for Partitioning Soil Test Correlation Data Into Two Classes1
Robert B. Cate,Larry A. Nelson +1 more
TL;DR: In this article, a simple yet statistically sound method for setting the class limits is proposed, which is to split the data into two groups, using successive tentative critical levels to ascertain that particular critical level which will maximize overall predictive ability (R), with the means of the two groups (classes) as the predictor values.
Journal ArticleDOI
Quick Test for Comparing Two Populations with Bivariate Data
TL;DR: A simple nonparametric test is given for testing the equality of two populations when the observations are bivariate and the alternative of interest is that the conditional c.d.f. of Y given X for one population dominates that for the other for every value of X.
Journal ArticleDOI
Root Growth Pressures of Cotton, Peas, and Peanuts1
H. M. Taylor,Larry F. Ratliff +1 more
Journal ArticleDOI
Mechanical Resistance Encountered by Roots Entering Compact Soils
L. H. Stolzy,K. P. Barley +1 more
Journal ArticleDOI
Puddling Influence on Soil, Rice Development, and Yield1
Prashant Sharma,S. K. De Datta +1 more