• Shashi Kanta

Mulberry is a hardy plant control by agro climatic conditions. it is also sensitive responding extremely well to optimum agricultural inputs but showing practically no growth when plant nutrients and moisture begin to operate as limiting factors. This is evidence from the fact that under the poor rainfall conditions prevailing in India, the current leaf yield is of the order of only 3,000-3,500 kgs per hectare whereas under assured irrigation and appropriate fertilizer application, it can be stepped up to 30,000 kgs. After monsoon water is the limiting factor and adversely affects the growth and leaf of mulberry and consequently the raw silk production particularly during the dry period, December to May Spacing recorded 15.58% increase over wider spacing possibly due to increase plant population. As such; it is suggested to use micro-sprinkler system. A field experiment was carried out during December to May for two years at the Central Serucultural Research &Training Institute, Sujanpur for two years. S type cultivation of mulberry with two different spacing methods viz.60x60cm and 45x15 cm in a spilt-plot design having three replications. Four systems of irrigation viz. drip, micro-sprinkler, subsurface and alternate furrow were used each with two levels of irrigation based on I W/CPE (irrigation water/cumulative pan evaporation) ratios of 0.4 and 0.6 the plants were maintained following the recommended package of practices for irrigated mulberry .The result was 3,500 kg per hectare whereas under assured irrigation and appropriate fertilizer application, it can be stepped up to 30,000 kg or so, or nearly ten times. Monsoon water becomes the limiting factor and adversely affects the growth and leaf of mulberry and consequently the raw silk production particularly during the dry to 5.0 ha cm of water in mulberry garden by furrow method at 10 days intervals for sandy loam soil and at 15 days intervals for clayey loam soil during December to April in south India while in Punjab indicated that plants height, number of branches and level per plant and leaf yield due to irrigation at 0.4 and 0.6 IW/CPE ratios being at per the lower level of irrigation is preferable thereby saving 33%of irrigation water vis-à-vis the earlier recommendation of 4.5 ha cm at fortnightly intervals. As regards the system of irrigation, micro –sprinkler irrigation recorded significantly taller plants ,higher number of branches and leaves ( plant and leaf yield ) over drip, subsurface and alternate furrow systems of irrigation, the first three systems recording 23.45%,11.34% gain over alternate furrow method ,the drip and subsurface system being at per. Wider plant spacing (60 x 60 cm) recorded significantly taller plants (114.95 cm),higher number of branches (9.37) and leaves (189.48)/plants vis-à-vis closer spacing (45x15 cm).on the other hand .leaf yield due to close irrigation at 0.4 IW/CPE ratio

Micro- sprinkler, drip, subsurface, alternate furrow irrigation, IW/CPE ratio, mulberry, spacing, growth, leaf yield.

"EFFECT OF IRRIGATION SYSTEMS ON GROWTH OF VARIOUS PARTS OF MULBERRY PLANT BY SPACING METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.72-74, July-2018, Available :http://www.jetir.org/papers/JETIR1807A09.pdf

"EFFECT OF IRRIGATION SYSTEMS ON GROWTH OF VARIOUS PARTS OF MULBERRY PLANT BY SPACING METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp72-74, July-2018, Available at : http://www.jetir.org/papers/JETIR1807A09.pdf