Effect of forest trees on the yield of agricultural crops
Effect of forest trees on the yield of agricultural crops
G. M. Khattak and M. I. Sheikh
ABSTRACT
Intro:To study the effect of forest trees on the yield of agricultural crops grown with them, Dalbergia sissoo (shisham) Euc. citriodora, Populus deltoides 63/51 and Salmalia malabarica (semal) were planted in the Pakistan Forest Institute in January to February 1978 in RCB design with four replications. The size of plot was 444 m2 and trees were planted at 4.3 x 4.3 m spacing with entire plants of poplar and Eucalyptus and root-shoot cuttings of shisham and semal.
On 22-10-1979 the area was irrigated to prepare it for wheat sowing. On 5-11-1979 Pavan variety of wheat was sown in drills 45 cm apart between the lines of trees. The drill next to the line of trees was 80 cm away from it. Seed rate was 135 kg/ha. Urea was applied on 4-12-1979 at the rate of 230 kg/ha. Two irrigations of 10 cm depth each were given to the crop on 4-12-1979 and 14-4-1980. From sowing to harvesting on 2-5-1980, 240 mm rain was received.
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