EFFECT OF COMPACTION ON PHYSICAL PROPERTIES OF LOAMY SAND SOIL
Citation :- EFFECT OF COMPACTION ON PHYSICAL PROPERTIES OF LOAMY SAND SOIL.Agricultural Science Digest.2003.(23):95 - 97
A field experiment was conducted in rabi season of the year 2000–2001 with sixteen treatment combinations of four levels of compaction by 0, 2, 4 and 6 passes of a iron roller of 500 kg denoting as C0, C2, C4 and C6 and four levels of irrigation i.e. I4, I5, I6 and I8 denoting number of irrigations. fenugreek (Methi) variety Rmt 1 was taken as test crop. The soil of the experimental field was loamy sand in texture. Compaction decreased the saturated hydraulic. conductivity and total porosity in the sub-surface of 15–30 cm lay rs besides, increase in the bulk density and moisture content of the soil. Soil compaction increased with increase in number of passes of iron roller 2 to 6. This effect was observed upto the harvest of crop but with declining magnitude.
A pot experiment using barley (Hordeum vulgare L.) var. BL-2 was conducted with five levels of saline irrigation water viz., 0, 4, 8, 12 and 16 dSm−1 EC and four levels of presoaking of seed treatment viz., 0, 500, 1000 and 1500 mg. L−1 of cycocel to find out their effect on quality and yield attributes. Quality and yield attributes of barley decreased significantly with increase in salinity of water and markedly above the EC 8 dSm−1. While presoaking of seed in cycocel progressively increased the quality and yield attributes of barley and being maximum at higher concentration i.e. 1500 mg Ll.