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Chaudhary Charan Singh Haryana Agricultural University (2013)

Effect of different soil management practices on moisture conservation in soils under arid fruits

Poonia, Shishpal

Titre : Effect of different soil management practices on moisture conservation in soils under arid fruits

Auteur : Poonia, Shishpal

Université de soutenance : Chaudhary Charan Singh Haryana Agricultural University

Grade : Doctor of Philosophy (PhD) 2013

Résumé présenté dans KrishiPrabha (Indian Agricultural Doctoral Dissertations Repository)

The study included both field as well as laboratory experiment. Field experiment on Effect of Different Soil Management Practices on Moisture Conservation in Soils Under Arid Fruits was conducted at Regional. Research Station (CCS HAU, Hisar) Balsamand and Dryland Research Farm, CCS HAU, Hisar during 2002-03 and 2003-04. The field study consisted of three experiments.

i. Effect of land slope, pond sediment thickness, rainfall intensity and its duration on water runoff/harvesting. The treatments comprised of four slope (0, 3, 4.5 and 6%), three levels of pond silt (100, 200 and 300 t/ha), three rainfall intensity (2.8, 5.4 and 8.4 cm/hr) and three rainfall duration (10, 20 and 30 minutes). The gross plot size was 2m x 6m with three replication.
ii. Effect of different mulches on water conservation in soil under arid fruits with four mulches (control, soil mulch, crop residue and polyethylene. The plot size was 7 m2 in circular shape. Depth of irrigation was 7.5 cm at ID/CPE of 0.75. Pond silt was added @ 200 t/ha.
iii. Effect of different soil surface manipulation on moisture conservation was studied with six treatments absolute control (without tree), control (no manipulation), Polyethylene mulching, outward slope 5%, outward slope and trenching and outward slope with mulching in trench. _iv. Laboratory experiment vertical movement of nitrogen as a function of time consisting of three nitrogen level i.e. 100, 200 and 300 mg/kg soil and 7.5 cm depth of irrigation was conducted in plexi glass column in laboratory of Deptt. of Soil Science, CCS HAU, Hisar.

The results of this investigation indicate that :
Run-off significantly increased as pond silt increases. Similarly, land slope also significantly enhanced the runoff. The effect of pond silt level and slope on runoff generation was found to be significant.
Soil erosion significantly increased as level of pond silt increased from 0 to 300 t/ha. Land slope also increased significantly the soil erosion.
Amendment of pond silt from 0 to 300 t/ha significantly increased the
Reversely from runoff and soil erosion, sediment load of runoff water was decreased with increase in rainfall duration from 20 min to 30 min.
The maximum soil moisture storage was found under polyethylene mulching and followed as crop residue mulch > soil mulch > control.
Maximum yield was obtained from the tree having outward slope + FYM in trench followed by slope + trench, trench only, slope + polyethylene and control.
The rate in advancement of water front decreased from an initial rate of 10 cm/min to 1.3 cm/min.
In general NO3-N concentration increased with increasing depth for all the three doses (viz. 100, 200 and 300 ppm) except near the end of the water front.

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Page publiée le 27 janvier 2015