Evaluation of poplar (Populus deltoides) for spacing under nursery and field plantation
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Date
2017
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CCSHAU
Abstract
The present investigation entitled “Evaluation of poplar (Populus deltoides) for spacing under
nursery and field plantation” was carried out at Yamunangar district, Haryana during 2015-16 and
2016-17 to study the effect of different spatial arrangements (4.26 × 4.26 m, 3.96 × 3.96 m, 3.65 ×
3.65 m, 4.87 × 2.74 m and 3.65 × 2.13 m spacings) and different clones (WSL-39,WSL-22,WSL-8, G-
48 and G-3) up to 7 years old poplar plantation in farmers fields. The growth attributes (height and
dbh) were significantly influenced in association with all the five spatial arrangements of poplar. Wider
spacing (4.26 × 4.26 m) of poplar was found best for growth characters (height and dbh) of poplar
followed by 3.96 × 3.96 m, 3.65 × 3.65 m, 4.87 × 2.74 m and 3.65 × 2.13 m spacings. However, among
different poplar clones, the height and dbh were recorded significantly higher in poplar clone WSL-39
which was followed by WSL-22, WSL-81, G-48 and G-3 in wider spacing (4.26 × 4.26 m) up to a
seven year. The poplar clone WSL-39 gave maximum volume and weight in all the spacings such as
4.26 × 4.26 m, 3.96 × 3.96 m, 3.65 × 3.65 m, 4.26 × 4.26 m and 3.65 × 2.13 m. Though the weight
and volume of poplar clones WSL-22 and WSL-81 was at par with clone WSL-39 at the spacing of
4.26 × 4.26 m spacing. The cost and income analysis for growing poplar in intercropping with
sugarcane and wheat under different spacings indicated that highest B-C ratio (2.94), internal rate of
return (48.51%) and net present worth ( Rs. 3, 75,584.9 hectare-1) was obtained under 4.87 × 2.74 m
spacing. However, highest B-C ratio (3.89), internal rate of return (51.24 %) and net present worth (Rs.
4,22,749.30 hectare-1) was recorded from Poplar- Sugarcane- Sorghum-wheat crop rotation under 4.87
× 2.74 m spacing. In poplar-Sorghum- berseem crop rotation, highest net present worth (Rs. 3,
47,939.6 hectare-1), B-C ratio (2.65) and internal rate of return (43.64 %) was found in 3.65 × 3.65 m
spacing. In 3.65 × 3.65 m spacing, the highest B-C ratio ((3.12), internal rate of return (48.55 %) and
net present worth (Rs. 2, 76, 283.32 hectare-1) was also recorded from Poplar- Sorghum-wheat crop
rotation. On the other hand, under different spacings of poplar nursery the highest net benefit (Rs. 2,
11,532) was recorded under 60 × 40 cm spacing during the year 2015-16. However, during 2016-17,
the higher net benefit (Rs.1, 82,983) was recorded under 70×35 cm spacing.
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