Abstract
This experiment was conducted to find out the effects of Trichoderma viride on growth and yield of wheat at Institute of Agriculture and Animal Science, Lamjung Campus, Sundarbazar, Lamjung during December 2016 – April 2017. The experiment consisted of seven treatments; (T1: Control; T2: Soil + NPK; T3: Soil inoculated Trichoderma; T4: Trichoderma + FYM; T5: Trichoderma + ½ NPK; T6: Trichoderma + NPK and T7 = Trichoderma + NPK + FYM) laid out in completely randomized design (CRD) with three replications. The results showed that Trichoderma viride increased the plant height (4.6%), root weight (1.5%), leaf length (0.3%), panicle weight (9.1%), number of grains (3.8%), grain yield (36.5%), biological yield (13.7%), and biomass yield (2.7%) over control; while root length (-17.4%), number of leaves (-8.4%), tiller number (-10.8%), panicle number (-6.7%), panicle length (-8.4%) highlighted the negative impact of T. viride on wheat plant. T. viride displayed antagonism with inorganic fertilizer. When T. viride and NPK were accompanied with farmyard manure, most of the growth and yield parameter showed the highest value. Though Trichoderma viride decreases several growth parameters, it still can be used as biofertilizer which increases the grain yield. Using T. viride with a full dose of NPK during sowing stage may not be efficient and economical in terms of productivity. Introducing farmyard manure to T. viride gives better yield than T. viride alone.
Highlights
Wheat (Triticum aestivum) is the most extensively grown cereal crop in the world
Taking T1 as control, plant height showed the highest increase of 14.5% in T2, but when mixed with Trichoderma as in T6, the height increase was only 4.6% which was seen in T3
Trichoderma shows a slight increase in the plant height, panicle weight, number of grains, grain yield, biological yield, and biomass yield over control; while root length, number of leaves, tiller number, panicle number, panicle length highlight the negative impact of Trichoderma on the wheat plant
Summary
Wheat (Triticum aestivum) is the most extensively grown cereal crop in the world. The optimum temperature for vegetative growth is 16-22 °C and requires about 14-15 °C optimum average temperature at the time of maturity. Temperatures above 25 °C during this period tend to decrease grain weight. Wheat can be grown successfully in those regions where annual rainfall varies from 25 to 150 cm [1]. Wheat is an important non-leguminous crop which requires a high input of chemical fertilizers. The nutrients removal principally NPK by the wheat crop is 227 kg/ha [2]. Nitrogen (N) is the most limiting nutrient for wheat production that affects the speedy plant growth and improves grain yield [3]
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