By Muhammad Akhlaq Mudassir Assistant Research Officer

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Presentation transcript:

EFFECT OF PLOUGHING DEPTH UNDER VARYING IRRIGATION REGIMES ON SPRING PLANTED SUGARCANE By Muhammad Akhlaq Mudassir Assistant Research Officer Sugarcane Research Institute, Faisalabad

Introduction Sugarcane Pakistan ranks The average yield and recovery ? the 2nd important cash crop of Pakistan area of 1.07 million hectares Pakistan ranks 5th in area and sugarcane production 8th in sugar production. The average yield and recovery ? The major reasons of this low yield are less plant population conventional planting techniques poor land preparation planting of unapproved varieties and scarcity of irrigation water etc.

Deep ploughing increases Most of our farmers prepare the land up to the depth of 6ʺ with cultivator Sugarcane is a deep rooted crop which requires land preparation to a depth of 18-24ʺ Deep ploughing increases The penetration of the root into the soil and the root surface area Resultantly saving of water in deep layers of soil improves tolerance against lodging and drought improves the growth of crop by increasing cane length, cane girth and finally the yield of the crop. Keeping this in view, the present study was conducted with the objective to find out the most suitable ploughing depth that combats the ill effects of drought on growth, yield and recovery of sugarcane.

Materials and methods: Site: Farm area, Sugarcane Research Institute, Faisalabad Lay out : RCBD with split plot arrangement Plot size: 8m × 7.2m Seed rate: 50,000 TBS ha-1 Fertilizer rate: 168-112-112 NPK Kg ha-1 Date of planting: 07-03-2011 Test Variety: CPF 246

Treatments: Main Plot: Irrigation Sub Plot: Ploughing Depth I1: 1.0 Coefficient (irrigation after 4 inches of cumulative pan evaporation) I2: 0.8 Coefficient (irrigation after 5 inches of cumulative pan evaporation) I3: 0.6 Coefficient (irrigation after 6.67 inches of cumulative pan evaporation) Sub Plot: Ploughing Depth P.D.1: 6 inches (Cultivator) P.D.2: 12 inches (Chisel plough) P.D.3: 18 inches (Subsoiler) P.D.4: 24 inches (Subsoiler)

Number of irrigations and rain fall I1= 1.0 pan coefficient I2= 0.8 pan coefficient I3= 0.6 pan coefficient Rain fall (mm) No. of irrigations 12 11 09 547

Results Treatments Germination (%) Tillers plant-1 Cane Count (000 ha-1) Cane Yield (t ha-1) Sugar Yield (t ha-1) Irrigation I1= 1.0 Coefficient I2= 0.8 Coefficient I3= 0.6 Coefficient LSD at 0.05   46.01 43.88 44.40 N.S. 0.84 0.91 0.82 78.29 a 73.62 b 67.31 c 2974 70.48 a 63.21 b 61.75 b 3.929 9.93 a 8.80 b 8.69 b 0.554 Ploughing Depths  P.D1= 6″ P.D2= 12″ P.D3= 18″ P.D4= 24″ 48.19 a 45.18 ab 44.18 ab 41.52 b 4.130 0.76 b 0.78 b 0.83 b 1.04 a 0.886 68.38 c 69.41 c 74.27 b 80.24 a 4.734 49.83 d 64.07 c 66.66 b 70.01 a 2.195 8.40 c 9.03 b 9.34 b 9.80 a 0.313

Quantification of results

Conclusion From the present study, it may be concluded that: Preparation of land upto a depth of 24 inches gave 29% higher yield than the farmer’s conventional land preparation upto 6 inches. 12 Irrigations gave 14 & 11% higher cane yield than 9 & 11 irrigations, respectively.

Thanks