TEMPORAL VARIABILITY OF LEVELLING INDICES AS INFLUENCED BY DIFFERENT LAND LEVELLING METHODS
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 31
Abstract
Land development is one of the prime components of precision farming. Unevenness of agricultural fields leads to the in-efficient use of irrigation water, which in turn reduces the yield and farm income. Levelling index, which is a dynamic factor, determines the quality and accuracy of land levelling. Therefore, it is imperative to study the temporal variability of levelling indices. A field experiment was conducted at two different duration viz., 2009-2010 and 2012-2013 in the research farms of UAS, Raichur, Karnataka state. The study was taken up during the year 2009-10 as first observation to find levelling index of the fields by different methods viz., the conventional levelling and the tractor operated laser guided land leveller. A comparative evaluation of the laser guided land leveller with the conventional system of levelling revealed that, the percentage reduction in standard deviation of reduced levels at grid points of 10X10 m with-in the field for before and after levelling was 85.7 % for laser levelling, and that of 46.79 % for the conventional method which was 38.91 % lower when compared with the laser levelling. The levelling indices before and after conventional levelling were 0.18 m and 0.10 m and the same for before and after laser levelling were 0.17 m and 0.02 m respectively. During the year 2012-13, the levelling indices of the fields levelled by conventional and laser levelling methods were 0.20 m and 0.07 m respectively. The standard deviation of reduced levels for fields levelled by conventional and laser levelling methods were 0.25 m and 0.08 m respectively. Though the temporal variability with respect to levelling indices was observed in both conventional and laser levelled fields, the lesser variations were found in laser levelled field.
Authors and Affiliations
P. S. KANANNAVAR
Keywords
Related Articles
- EP ID EP170567
- DOI -
- Views 74
- Downloads 0
EFFECT OF PLANTING METHODS ON GROWTH AND AGROMETEOROLOGICAL INDICES OF RICE
A field experimental trail was carried out in the kharif season 2011 year at Regional Research Station (RRS), CCS Haryana Agricultural University, Kaul, India to evaluation the comparative performance of scented/basmati...
EFFECT OF NITROGEN LEVELS ALONE AND IN COMBINATION WITH FARM YARD MANURE, POTASSIUM AND PHOSPHORUS ON GRAIN YIELD
A field study was conducted to study the effect of nitrogen levels alone and in combination with farm yard manure (FYM), phosphorus (P) and potassium (K) on mean grain yield of rice and wheat crop. In this study, seven t...
A RAPID METHOD FOR RICE GENOMIC DNA EXTRACTION WITHOUT LIQUID NITROGEN AND PHENOL
A rapid, safe and inexpensive method for good quality DNA extraction from rice leaves is the basic requirement for molecular breeding in rice. Here we described a faster, safe and inexpensive method for genomic DNA extra...
EFFECT OF STEM CELL FACTOR ON CAPRINE PREANTRAL FOLLICLE CULTURE
The influence of stem cell factor on in-vitro culture of preantral follicles (PFs) isolated from goat ovaries was investigated. Preantral follicles were isolated from the cortex of goat ovaries and individually cultured...
CORRELATION AND PATH COEFFICIENT STUDIES FOR GRAIN YIELD AND OTHER YIELD ATTRIBUTES ON AROMATIC SHORT GRAIN RICE (Oryza sativa L.) GENOTYPES
The present study was carried out on Aromatic short grain rice genotypes tested under Advance Varietal Trial-Two (AVT-2) consisting of total 11 entries along with three checks. The trial was conducted at Thakur Chhedilal...