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Conventional methods of plant breeding and
agronomic practices remained a successful tool to maintain the pace of food
production for centuries but due to changing climatic conditions and the
challenges of 21st century like population growth, pollution,
declining biodiversity and food security have shaken the previous policies.
This situation compelled the agriculturist towards the judicious management of
natural resources to combat the poverty, disasters and increased food demands.
The present study was initiated to check wheat varieties in two water provision
conditions. The results revealed that environmental stresses played negative
role by minimizing the yield and yield contributing traits. However the
severity of water stress was depleted by some promising genotypes by showing
minimum hazard effects and by having capability to contribute to conserving biodiversity, ensuring sustainability, combating food
insecurity and increasing economic benefits. The minimum effect of moisture stress on
grain yield was shown by genotypes C-518 (12.97%) while the genotype Shakar, Pari-73
and Uqab-2000 showed maximum decline percentage. The global warming and population explosion will
further induce commodity shortage and law and order situation in the world. The
prevailing International tension can be cooled down by the provision of marshal
aids by the developed countries to the effected or threatened countries.
Due to similar
growth pattern and morphology, monocot weeds offer more severe competition with
wheat. A field experiment was conducted to screen herbicides most suitable for
the control of monocot weeds in wheat. Seven herbicides viz., Puma super 69EW @ 862.5 g a.i. ha-1,
Bristle 69 EW @ 1250 ml, Topik 15WP @ 37.05 g a.i. ha-1,
Safener15WP @ 247g, Certain 80WD @ 395.2 g and Tremor 24EC @ 247 ml/ha were used.
Weedy check where no weed control was practiced was kept as control. All
herbicides were sprayed as post-emergence with second irrigation 38 days after
crop sowing. The best weed control was accomplished by Safener 15WP 247 g ha-1 as significantly lower weed counts per m2 (11.0) and higher percent
weed control (73.4%) were noted after 21 days of its spray. Wheat growth
parameters like plant height, number of tillers per m2, spike length and number
of spikelets per spike remained statistically at par among various treatments.
Significantly higher number of grains per spike (55.67) and 1000 grain weight
(36 g) were noted with Puma Super 69EW @ 1250 ml ha-1 and Certain
80WD 395.2 g ha-1, respectively. Although treatments did not differ
significantly with respect to wheat grain and biological yields, yet the
highest grain yield (3708.3 kg ha-1) and biological yield (10208.3