Abstract
Ethiopia have highly potential to produce field pea, this crops produce in Ethiopia from ancient time still now and the societies use it for different purpose such as to prepare cultural food, in household consumption and as a source of income. It is substantial crop and substitute meat nutritional value, as a source of protein. Field pea production has different constraints such as weed, disease and insect pest problems, and bruchuspisorum is major insect pest which is decline quantity of production in Ethiopia. The experiment was done at Holleta Agriculture Research center in the field condition with four replication in Completed Randomized Block Design. The objective of this study was to distinguish the exact chemical spraying time in the field to control bruchuspisorum. The variety was Adi, Wolemera, Markos and Burkitue, the chemical treatment were spraying during, early flowering, flat and full podded as recommended level, three times in every week. As a result there was significance difference between pre flowering chemical spraying time, flat podded spraying and full podded spraying time, on the number of larvae per pod (F13,18 at 0.005=11.13, p<0.0001). There was least recorded of number of larvae on per pod in full and flat pod spraying time. Even if there was no significance difference among the flat and full podded spraying time, in full podded spraying time, there was no larvae recorded totally. So in order to manage field pea bruchuspisorum in the field condition, the chemical spraying must be started from flat podded and will continued until to full podded.
Highlights
Preservation and effective use of natural resources and the environment in the Republic of Azerbaijan is one of the important components of the State's socio-economic policy
The soil cover has been formed as an important component of the biosphere and as a result of the influence of abiotic, biotic and anthropogenic factors forming the earth as a free nature
Soil ecosystems and their erosion are the main criteria that constitute the basis for biological activity, plant productivity cultivated on the soil, and the environmental assessment of the product obtained by evaluating soil and its forming factors in such interactions
Summary
Preservation and effective use of natural resources and the environment in the Republic of Azerbaijan is one of the important components of the State's socio-economic policy. The soil cover has been formed as an important component of the biosphere and as a result of the influence of abiotic, biotic and anthropogenic factors forming the earth as a free nature Soil ecosystems and their erosion are the main criteria that constitute the basis for biological activity, plant productivity cultivated on the soil, and the environmental assessment of the product obtained by evaluating soil and its forming factors in such interactions. Degradation of soil and its ecological assessment, as well as one of the new areas of soil science, explain the ecological nature of the processes occurring in the soil and its causes, its dynamics and legitimacy on scientific grounds In this regard, the land affected by the natural and anthropogenic impacts, as well as in all natural areas of the Republic, covers a wide range of areas in the Shamakhi region, which covers the southeastern slopes of the Greater Caucasus. A number of scholars have provided extensive information on the occurrence, genetic features, distribution and use of gray-brown soils in Azerbaijan [1,2,3,4]
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