Abstract
Hordeum vulgare is one of the most important cereal crop plants and severe attacked by aphid. Present study was designed to evaluate the effect of different fertilizers and their combination on aphid infestation in barley. Three different fertilizer i. e. urea, DAP, and urea+DAP were applied to three different barley fields after 25 days of germinations. Data was recorded after every 10 days. Results showed that lowest pest population was recorded in urea+DAP field. DOI : 10.7176/ALST/77-01 Publication date: January 31 st 2020
Highlights
Barley (Hordeum vulgare L.) belongs to the family Gramineae and is one of the most important cereal crop plants in the world
The result started that aphid population from the first week and second treatment aphid population are deferent and normal from first treatment and the minimum number of aphids were recorded in the last observation with mean number 4.03 ± 0.22 in treatment two and peak population of aphids were recorded 25.09 ± 0.22 was recorded in the fourth observation (Fig.2)
The result were appeared from first week of the aphid population and the minimum of aphid were recorded in the last observation with mean number 3.02 ± 0.22 in the treatment three and the peak aphid population were recorded 25.01 ± 0.22 was recorded in the three observation (Fig.3)
Summary
Barley (Hordeum vulgare L.) belongs to the family Gramineae and is one of the most important cereal crop plants in the world. It can be grown in any type of soil with any climatic condition (Akar et al 2004). In many countries the output from barley is not ideal as it was recommended; the main factors of low yield are insect pest infestation and improper usage of fertilizer with wrong time. Insect species infest barley, the most commonly pest species are aphids, cereal leaf beetle thrips and wireworms. Russian wheat aphid is adapted to semi-arid dry-land climates with an average annual rainfall less than 600 mm. keeping the about infestations of Russian wheat aphid in winter growing crops, the present study was designed to observe the effect of three different fertilizers such as Urea, DAP and Urea+DAP on aphid population on barley crop
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