TY  - BOOK
AU  - Sreelatha A K 
AU  - Pushkala S (Guide)
TI  - Impact of Soil Compaction on the Productivity of Onattukara Soils
U1  - 631.4 
PY  - 2001///
CY  - Vellayani
PB  - Department of Soil Science and Agricultural Chemistry, College of Agriculture
N2  - An investigation was carried out at Rice Research station, Kayamkulam to 
study the effect of soil compaction with organic manure and amendments on soil physical 
properties, nutrient availability, rooting pattern, yield and quality of crops like rice, 
sesamum, green gram and cowpea under rice based cropping system of Onattukara tract 
of Kerala. 
The compaction treatment with four passes of a 400 kg roller significantly 
improved the soil physical properties, nutrient availability and yield of all the crops. The 
available water content, microporosity, available N, P and K, root volume and root 
density significantly increased in compacted treatments for all the crops. Application of 
coirpith and kayaJ silt improved the field moisture content in kharif rice. The hydraulic 
conductivity and infiltration rates decreased in compacted plots. 
The compacted plots recorded less number of days for 50 percent flowering of 
sesamum, green gram and cowpea. The rabi crop of rice, sesamum and cowpea recorded 
the highest grain yields of 2.72 t ha-I, 529.79 kg ha-I and 594.78 kg ha-I in the 
compacted treatment along with coirpith and farm yard manure (@2.5 tha-I) 
combination, where as the kharif crop of rice recorded the highest grain yield of 3.15 t 
ha-1 in the compacted and coir pith treatments along with 5 t ha-1 farm yard manure. 
The seed yield of green gram was highest in compacted and 5 t ha-l farm yard manure 
treated plots with no amendments. 
 
Thus it can be concluded that compaction of coarse textured soils along with the 
application of 2.5 t ha-1 farm yard manure and 5 t ha-l coir pith significantly improved 
the soil physical properties, nutrient availability and inturn the yeild of different crops 
under rice based cropping system of Onattukara. 


UR  - http://krishikosh.egranth.ac.in/handle/1/5810015118
ER  -